Perreaux Switch SXV1 User Manual

Silhouette  
SXV1  
Phono Preamplifier Module  
Owners Manual  
 
i
Introducing the  
Perreaux Silhouette Series  
The Perreaux “Silhouette” series represents exceptional  
engineering at an affordable price.  
The series incorporates some of the highest levels of audio  
engineering available today.  
Key Features  
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Highly flexible for any cartridge  
Full Class A operation  
Low noise, sensitive input stage  
Highest quality internal power supply featuring a custom  
designed, fully shielded toroidal transformer and 17600µF  
of smoothing capacitance  
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Optimal internal layout incorporating total separation  
between channels  
Enhanced audio design featuring highest quality PCB and  
minimal internal wiring  
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Moving Magnet & Moving Cartridge compatible  
High rated output  
Compact  
Stylish  
The Perreaux “Silhouette” series takes you even closer to the  
elusive goal of “The Perfect Re-Creation of a Musical  
Event”.  
From all of us at Perreaux Industries Limited, thank you for  
choosing the Perreaux Silhouette Series SXV1 Phono  
Preamplifier.  
3
 
ii  
Important Safety Instructions  
Note:  
Please read all instructions carefully before attempting to  
operate your Perreaux Silhouette” SXV1 Phono  
Preamplifier.  
ALWAYS switch off power to your system before attempting to  
connect or disconnect cables.  
ALWAYS disconnect your system from the mains before  
attempting to clean your unit.  
ALWAYS keep electrical equipment out of reach of children.  
ALWAYS unplug sensitive electronic equipment during  
electrical storms.  
NEVER disconnect the mains earth from the system.  
NEVER operate the SXV1 with the cover removed.  
NEVER use any liquid inside the SXV1.  
NEVER bypass any fuse.  
NEVER attempt to repair the SXV1. In the event of a problem,  
please contact your Perreaux dealer.  
NEVER expose the SXV1 to extremely high or low  
temperatures.  
NEVER operate this product in an explosive atmosphere.  
4
 
iii  
Table of Contents  
i
Introducing the Perreaux Silhouette Series...................................3  
Important Safety Instructions ..........................................................4  
Table of Contents...............................................................................5  
Unpacking and Placement ...............................................................6  
Instant Install......................................................................................7  
Rear Panel Functions.........................................................................9  
Customising Your SXV1...................................................................11  
ii  
iii  
1
2
3
4
Impedance Loading Table ............................................................................... 12  
Capacitance Loading Table ............................................................................. 13  
Gain Setting Table ............................................................................................... 13  
Configuration Example ......................................................................................... 14  
5
Special Design Philosophies...........................................................15  
Special Design Features..................................................................17  
Care and Maintenance....................................................................19  
Warranty Information.....................................................................20  
Extended Warranty Registration Form ........................................21  
Troubleshooting Guide...................................................................22  
Specifications....................................................................................25  
Contact Details.................................................................................28  
6
7
8
9
10  
11  
12  
5
 
1
Unpacking and Placement  
Unpacking  
Procedure  
The SXV1 is packaged for maximum protection. To open, sit the  
box upright and cut the reinforced tape at the top of the box. The  
product can now be removed.  
Pull the white polystyrene protectors off either side of the unit  
and remove the black material covering.  
The SXV1 Phono amplifier is now unpacked and ready for  
further installation.  
Note:  
Please retain all packaging material for future transport.  
Box  
Contents  
1 x SXV1 Phono Preamplifier  
1 x Product manual  
1 x Detachable AC power cord  
Placing Your  
SXV1  
The SXV1 should generally be placed close to your source  
equipment, thus keeping the interconnect cabling between the  
tone arm and phono stage as short as practical. This will reduce  
the systems susceptibility to radio frequency interference and the  
negative effects associated with long cables.  
Ventilation  
Requirements  
The SXV1 is a low power preamplifier. Ventilation requirements  
are not considered to be an important factor in product  
placement.  
In the event that the SXV1 is to be incorporated into custom  
cabinetry, please refer to the dimensional information provided in  
the Specifications section of the manual (Chapter 11).  
6
 
2
Instant Install  
If you are like us, the first thing you will want to do is to play  
your favourite piece of music through your new SXV1. The  
following instructions are written to enable you to achieve this as  
quickly as possible. These are not comprehensive instructions,  
but are designed to enable you to play music now!  
Note:  
Please take the time to read the SXV1 manual thoroughly  
as it incorporates many features, which will enhance its  
operation.  
Placement  
The SXV1 is a highly sensitive preamplifier and best results will  
be achieved when placed away from potential interference from  
other components and electrical devices, for example AC mains  
cords/outlets, transformers, high power amplifiers, computers,  
etc.  
Place the SXV1 close or near the turntable in order to make as  
short a connection as possible between the tone arm and  
preamplifier.  
Turn off associated components  
This minimises the potential to damage any other components  
when connecting your SXV1 into the system.  
Connect turntable to SXV1  
Connect the audio output from the turntable to the inputs at the  
rear of the SXV1. Also, connect the turntable earth terminal to  
the earth post on the SXV1. Refer to Chapter 3 for Rear Panel  
information.  
Connect SXV1 to preamplifier  
Connect the line level output of the SXV1 to one of your  
preamplifier inputs. Refer to Chapter 3 for Rear Panel  
information.  
Configure SXV1 cartridge settings  
Set the DIP switches on the SXV1 to correspond with the  
manufacturers specifications of your particular cartridge. Refer  
to Chapter 4 for setup information.  
7
 
Switch on preamplifier/amplifier  
Set the volume to the minimum level and select the input that the  
SXV1 is connected to.  
Switch on SXV1  
Insert the power cord supplied into the rear of the SXV1 and into  
the wall. Switch on the socket at the wall and turn on the power  
of the SXV1 by setting the power switch down.  
Caution!  
Prior to connecting the AC mains, please check the voltage  
label on the rear panel to ensure that your unit conforms to  
the power supply in your area. Never attempt to connect  
the unit to the incorrect voltage.  
Switch on turntable  
Power up your turntable and start the player with your favourite  
record. Slowly increase the amplifier volume to achieve a  
comfortable listening level.  
CONGRATULATIONS!  
Now that you have achieved your first objective, sit back, relax  
and please read the rest of the manual at your own pace in your  
favourite armchair whilst sipping a hot cup of coffee. You’ll find  
the whole experience much more pleasurable whilst listening to  
music.  
8
 
3
Rear Panel Functions  
Right Channel Cartridge Load Setting DIP Switch  
Set these switches to correspond with the cartridge  
manufacturers recommended load figure. For an in depth  
discussion on this, please refer to Chapter 4.  
Right and Left Phono Inputs  
Input from turntable, accepts a standard unbalanced input (RCA).  
The left channel connection is on the right when looking from  
the rear, indicated by white inner ring. For more information on  
input specifications, please refer to Chapter 11.  
Right and Left Line Level Outputs  
Output to preamplifier, accepts a standard unbalanced input  
(RCA). The left channel connection is on the right when looking  
from the rear, indicated by white inner ring. For more  
information on output specifications, please refer to Chapter 11.  
Left Channel Cartridge Load Setting DIP Switch  
Set these switches to correspond with the cartridge  
manufacturers recommended load figure. For an in depth  
discussion on this, please refer to Chapter 4.  
Phono Earth  
Terminal for the earth connector from your turntable. If  
grounding your turntable does not alleviate hum problems,  
please consult the Troubleshooting Guide in Chapter 10.  
9
 
AC Mains Input  
An IEC-standard mains input is provided at the rear of the unit.  
The AC cord set is removable, allowing it to be upgraded at your  
will.  
On/Off Switch  
When operating the switch down, power is applied to the SXV1.  
Serial Number/Voltage Label  
The serial number is unique to your SXV1. Please record this  
number and store it in a safe place. For any service related  
enquiry, please be prepared to quote the product serial number to  
Perreaux personnel or their service representative.  
The voltage displayed in this area is the ONLY voltage that can  
be accepted by the unit.  
Caution!  
Never attempt to connect the unit to the incorrect voltage.  
10  
 
4
Customising Your SXV1  
The Perreaux SXV1 gives you complete access to all cartridge-  
loading parameters for each channel via the 12-way rear mounted  
DIP switches.  
Two DIP switches are required, as Perreaux engineers have  
meticulously laid the internal circuitry out on the internal PCB  
maintaining maximum isolation between channels. Each DIP  
switch should be set to be a mirror of the other.  
Cartridge load settings should be set up to directly correspond to  
the cartridge manufacturers recommended loading figure. If you  
don’t know the recommended loading of your cartridge, please  
contact the cartridge manufacturer or your dealer for this  
information.  
It is recommended that you make adjustments to the settings  
using a pen or other similar pointed object.  
Impedance loading values are set using switches 1 through 5.  
Capacitive loading values are set using switches 6 through 9.  
Gain values are set using switches 10 through 12.  
Caution!  
Note:  
NEVER change the DIP switch settings of your SXV1 whilst  
it is turned on.  
Each DIP switch should be set to be a mirror image of the  
other channel.  
11  
 
Impedance  
Loading  
Table  
Use this table to match the impedance loading characteristics of  
your SXV1 to that recommended by your cartridge manufacturer,  
where switch in UP position is OFF and switch in DOWN  
position is ON. Consult your cartridge documentation for the  
correct impedance figure.  
R Load  
Dip Switch Setting  
1
2
3
4
5
(W)  
47000  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
23500 DOWN  
8246 UP  
7015 DOWN  
979 UP  
959 DOWN  
892 UP  
875 DOWN  
99.8 UP  
99.6 DOWN  
98.8 UP  
98.6 DOWN  
90.7 UP  
90.6 DOWN  
89.9 UP  
89.7 DOWN  
10.0 UP  
10.0 DOWN  
10.0 UP  
10.0 DOWN  
9.90 UP  
9.90 DOWN  
9.89 UP  
9.89 DOWN  
9.09 UP  
9.09 DOWN  
9.08 UP  
9.08 DOWN  
9.01 UP  
9.01 DOWN  
9.00 UP  
9.00 DOWN  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
DOWN  
DOWN  
UP  
UP  
DOWN  
DOWN  
UP  
UP  
DOWN  
DOWN  
UP  
UP  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
DOWN  
DOWN  
UP  
UP  
DOWN  
DOWN  
12  
 
Capacitance  
Loading  
Table  
Use this table to match the capacitance loading characteristics of  
your SXV1 to that recommended by your cartridge manufacturer,  
where switch in UP position is OFF and switch in DOWN  
position is ON. Consult your cartridge documentation for the  
correct capacitance figure.  
C Load  
Dip Switch Setting  
(pF)  
6
7
8
9
27  
UP  
UP  
UP  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
DOWN  
54 DOWN  
74 UP  
101 DOWN  
297 UP  
324 DOWN  
344 UP  
371 DOWN  
417 UP  
444 DOWN  
464 UP  
491 DOWN  
687 UP  
714 DOWN  
734 UP  
761 DOWN  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
UP  
UP  
UP  
DOWN  
DOWN  
DOWN  
DOWN  
UP  
DOWN  
DOWN  
UP  
UP  
DOWN  
DOWN  
UP  
UP  
DOWN  
DOWN  
Gain Setting  
Table  
Use this table to configure the gain characteristics of your SXV1  
to suit the output voltage of the cartridge you are using, where  
switch in UP position is OFF and switch in DOWN position is  
ON.  
Consult your cartridge documentation for it’s rated output  
voltage. Set the gain configuration where the “Sensitivity” of  
your SXV1 is within ±25% of your cartridge output voltage. If  
no configuration falls into this bracket, use the setting with the  
sensitivity higher than your cartridge output voltage.  
Gain  
(dB)  
Sensitivity S/N Ratio THD+N  
(mV) (dB) (%)  
7.57 81.9 0.010  
Dip Switch Setting  
10  
11  
12  
40  
50  
59  
61  
70  
71  
72  
73  
UP  
UP  
UP  
DOWN  
UP  
UP  
UP  
2.36  
0.81  
0.66  
0.23  
0.22  
0.18  
0.17  
74.6  
64.0  
62.6  
55.4  
55.1  
54.6  
53.4  
0.022 DOWN  
0.058 UP  
0.067 DOWN DOWN  
0.122  
0.188 DOWN  
0.199 UP  
0.203 DOWN DOWN DOWN  
UP  
UP  
UP  
DOWN  
UP  
DOWN  
DOWN DOWN  
13  
 
Note:  
Note:  
If more than one setting falls within ±25% of your cartridge  
output voltage, the lower sensitivity configuration will  
result in greater dynamic range, the higher will be less  
susceptible to clipping.  
Rated output is 0.75VRMS  
.
Sensitivity value measured at rated output.  
Gain measured at 1kHz.  
Configuration  
Example  
Please use the following example of the popular Ortofon  
Kontrapunkt b (Moving Coil) cartridge as a guideline.  
Ortofon Kontrapunkt b specifications  
Recommended load resistance:  
Recommended load capacitance: not stated  
50W-200W  
Rated output voltage:  
SXV1 configuration  
470µV  
Resistance loading:  
Capacitance loading:  
89.7W  
27pF  
(if no capacitance loading is recommended, use the lowest value)  
Gain:  
61dB  
(based on Sensitivity bracket of 470ìV±25% Þ 352.5µV-587.5µV)  
DIP Switch Setting (left channel)  
1
2
3
4
5
6
7
8
9
10 11 12  
D
D
D
D
U
U
U
U
U
D
D
U
Note: D = switch in DOWN position, U = switch in UP position  
Note:  
The right and left DIP switches are a mirror image of each  
other.  
14  
 
5
Special Design Philosophies  
Perreaux has been designing and manufacturing only the highest  
quality audio componentry for more than a quarter of a century.  
Technology has continued to evolve rapidly over that time and  
our knowledge and application of design, materials and  
manufacturing techniques has advanced in tandem with this.  
Today’s Perreaux range comes closer to fulfilling our shared  
vision than at any other time in the past.  
The SXV1 has been developed to meet customer demands for  
compact higher quality products. Careful attention has been  
taken throughout the development phase, not to make  
compromises that would degrade the high quality of reproduction  
that the unit is capable of delivering.  
To follow is a discussion on some of Perreaux design  
philosophies that have been incorporated into the entire range.  
Minimalist  
Design  
Leading British architect, John Pawson, writes:  
The Minimum can be defined as the perfection  
that an object achieves when it is no longer  
possible to improve it by subtraction. This is the  
quality that an object has when every component,  
every detail, and every junction has been reduced  
or condensed to the essentials. It is the result of  
the omission of the inessentials”.  
Perreaux has historically embraced the minimalist ethic from an  
audio design perspective only. The concept of “less equating to  
more” has been at the heart of all Perreaux audio designs for  
more than a quarter of a century. Our current product offering  
takes the minimalist ethic to new levels by totally embracing the  
concept.  
Minimalist Electronics  
We wish to maximise the quality of your listening pleasure by  
keeping the componentry and signal path as uncluttered, short  
and clean possible. All components in the signal path, even those  
of the highest quality have an effect on the signal, thereby  
altering the quality of the reproduction in some way. Our aim is  
to recreate in its entirety, the original performance by not adding  
or subtracting anything, irrespective of the source.  
15  
 
Minimalist Aesthetics  
Our products appeal to those who seek the ultimate in audio  
exclusivity, namely the perfect blend of “form and function”.  
“Form and function” are both tough masters. We make no  
excuses for producing some of the most distinctive high-end  
audio products on the planet. We let “form and function” blend  
together in perfect harmony. This surely is the essence of true  
minimalist utilisation.  
Minimalism in a Wider Context  
John Pawson writes:  
Clearly simplicity has dimensions to it that go  
beyond the purely aesthetic: it can be seen as the  
reflection of some innate, inner quality, or the  
pursuit of philosophical or literary insight into the  
nature of harmony, reason, and truth”.  
16  
 
6
Special Design Features  
Construction  
The beautifully styled curving front panel is milled from solid  
6.0mm (0.2”) thick aluminium extrusion and finished in a special  
“Perreaux only” formulation of durable high quality black  
powder coat. The front panel also features the PERREAUX®  
logo carved into the solid aluminium. The chassis and cover are  
both manufactured from heavy gauge metal. No cover fixing  
screws are visible. The “Silhouette” SXV1 is stylish yet  
functional and exhibits typical hallmarks of the Perreaux brand.  
Circuit  
Topology  
The Power  
Supply  
The SXV1 has an internal power supply. These designs are  
invariably more sophisticated than those featuring external plug  
in power packs. Special attention must be paid to shielding,  
supply transformer design, capacitance and earthing.  
Perreaux has specially developed a 6x oversized (10VA) fully  
shielded internal toroidal power supply for the phono supply. A  
total of 17600µF of smoothing capacitance and low pass RC  
filters are employed to provide a “rock-solid”, super low ripple,  
linear regulated, DC supply.  
R & C  
Loading  
With 21 values of Resistance loading and 16 values of  
Capacitance loading, Perreaux engineers have designed the  
ultimate flexibility to enable the user to match any cartridge.  
17  
 
Gain  
With a gain range of +40dB to +73dB, the SXV1 is incredibly  
sensitive. Working in combination with the wide selection of R  
and C loading the user has no need for messy MM/MC jumpers  
as any type of cartridge can be matched via the external  
selectable DIP switch settings.  
Single  
Channel  
Block  
Diagram  
RIAA  
Equalisation  
The RIAA uses robust equalization architecture with high  
precision, low noise resistors and highly linear metalised  
polyester capacitors for optimum signal transfer.  
RIAA  
deviation is ±0.5dB, 20Hz-20kHz, and from 100Hz-20kHz  
deviation is a mere ±0.2dB.  
Input Stage  
PCB Layout  
Perreaux have utilised the CA3046 transistor array package. The  
main advantage of this device is that it features highly accurate  
gain matching on account of the reason that the transistors all  
share the same silicon substrate. The CA3046 device provides a  
low noise but highly sensitive interface between cartridge and the  
RIAA EQ section. Coupled with accurate current mirroring  
circuitry and stable current sources, the circuit topology works in  
combination to make for sonic transparency.  
Special attention has been lavished on the PCB layout. The unit  
is symmetrical in design (note the DIP switch numbers, they are  
a mirror of each other, and the input/output RCA configuration),  
with each channel being isolated from the other. The super clean  
custom designed power supply is physically segregated from the  
rest of the sensitive electronics.  
Earth  
Isolation  
Special attention has been paid to ground planes to maintain  
sonic purity. All signal grounding is isolated from mains earth.  
18  
 
7
Care and Maintenance  
Note:  
Please switch the unit off and remove the cord set from the  
rear of the Phono Amplifier before attempting to clean  
your SXV1 in the manner described below.  
Never apply liquid directly to the SXV1.  
Never use abrasives.  
Never rub in a circular motion.  
The front panel and cover feature a durable high quality powder  
coat finish.  
To remove finger marks and dirt, lightly rub the surface with a  
soft cloth.  
If the dirt is not removed, dip your cloth in a mild solution of  
soap and water, squeeze excess moisture from it and then gently  
reapply to the surface.  
Stubborn dirt may be removed by the application of a small  
quantity of isopropyl alcohol, applied directly to the cleaning  
cloth only, and reworking the effected area.  
The Perreaux SXV1 has been designed to provide many years of  
trouble free enjoyment.  
19  
 
8
Warranty Information  
1 Year  
Limited  
Warranty  
The Perreaux SXV1 is warranted free from defects in material  
and workmanship under normal use for a period of 1-year (365  
days) from the date of purchase.  
To extend the warranty of the Perreaux SXV1 to three (3) years  
from date of purchase, please return a fully completed warranty  
registration form along with a copy of the original receipt of  
purchase to:  
Perreaux Industries Ltd  
PO Box 47413  
Ponsonby  
Auckland  
New Zealand  
For the Extended Warranty Registration Form, please refer to  
Chapter 9.  
3 Year  
Extended  
Warranty  
The extended warranty for the Perreaux SXV1 is three (3) years  
from the date of purchase. If during the warranty period the  
SXV1 exhibits defects in materials and/or workmanship, it will  
be repaired or replaced, at our option, without charge for either  
parts or labour, at our factory in Auckland, New Zealand. The  
warranty does not apply to any unit that has been misused,  
abused or altered.  
Any unit that is not performing satisfactorily may be returned to  
the factory in Auckland, New Zealand for evaluation. Return  
authorisation must first be obtained by either calling or writing to  
Perreaux prior to shipping the unit. Perreaux Industries Ltd and  
it’s authorised distributors and dealers shall not be held liable for  
any freight or insurance charges. Freight and insurance charges  
to and from the Perreaux factory will be the sole responsibility of  
the owner of the unit.  
There is no other express warranty on the SXV1. Neither this  
warranty nor any other warranty, express or implied, including  
any implied warranties of merchantability of fitness, shall extend  
beyond the warranty period. No responsibility is assumed for  
any incidental or consequential damages.  
Obtaining  
Service  
In the event that you are experiencing difficulty with your SXV1,  
please as a first step consult the troubleshooting guide in Chapter  
10. For further assistance, please contact your Perreaux dealer.  
20  
 
9
Extended Warranty  
Registration Form  
Please complete this form and either fax, mail or e-mail it, along  
with a copy of the original receipt, to Perreaux Industries Ltd.  
Fax:  
+64 9 815 5981  
Mail:  
Perreaux Industries Ltd  
PO Box 47 413  
Ponsonby  
Auckland  
New Zealand  
Alternatively, complete the online Warranty Registration Form  
#
3 Year Extended  
Warranty Form  
Name:  
Address:  
Suburb:  
City:  
Country:  
Telephone:  
E-mail:  
Website:  
Product:  
S I L H O U E T T E S X V 1  
Serial No:  
Dealer:  
Purchase Date:  
/
/
d
d
m m  
y
y
y
y
21  
 
10  
Troubleshooting Guide  
Please use this guide if you are experiencing any problems with  
the SXV1 in your system. It will provide possible solutions for  
some given symptoms.  
There is a Output signal is clipping  
crackling  
noise  
coming from  
my speakers  
The SXV1 gain setting is too high. Confirm that the gain is  
configured correctly for your cartridge. If you are unsure,  
decrease the gain setting step by step until the crackling noise  
goes away.  
Note:  
Ensure you switch the unit off before adjusting the DIP  
switches.  
Dust on needle and/or record  
Make sure that your needle and record are free from dust and  
debris.  
I turn up the Output level is too low  
volume but  
it isn’t very  
loud  
The SXV1 gain setting is too low. Confirm that the gain is  
configured correctly for your cartridge. If you are unsure,  
increase the gain setting step by step until the volume level is  
suitable.  
Note:  
Ensure you switch the unit off before adjusting the DIP  
switches.  
Incorrect cartridge loading  
The resistive and capacitive cartridge loading configurations are  
not set correctly.  
Check that these settings match the  
requirements of your cartridge.  
There is no SXV1 not turned on  
output from  
my system  
Make sure the SXV1 power switch is in the DOWN position.  
AC cord not plugged in  
Check that the AC cord is plugged into the IEC socket on the rear  
of the SXV1.  
Mains power not turned on  
Check if the power is turn on at the mains socket on the wall.  
22  
 
Interconnect cables not connected  
Make sure that the input and output interconnect cables are  
plugged in and are connected to the respective RCA sockets on  
the rear of the SXV1.  
Cartridge not connected  
Confirm that the cartridge is correctly connected and fitted to the  
tone arm.  
Turntable not turned on  
Check that your turntable is plugged into the mains and the  
power is turned on.  
Tone arm is not lowered onto record  
Make sure that the tone arm is moved from it’s stationary  
position and lowered onto the record.  
Other components not turned on  
Check that your preamplifier and/or amplifier are plugged into  
the mains and the power is turned on.  
No volume setting  
Make sure that the volume on your preamplifier or amplifier is  
set to a suitable level. Check that it is not muted or attenuated.  
Preamplifier/amplifier set to incorrect input  
Confirm that the source input on your preamplifier/amplifier is  
set to the appropriate input.  
Speakers not connected  
Check that your speaker cables are firmly connected at both the  
binding posts of your amplifier and the speaker terminals.  
I can hear a Phono earth not connected  
hum coming  
through my  
speakers  
Confirm that the earth terminal from your turntable is solidly  
connected to the phono earth binding post on the rear of the  
SXV1.  
Phono earth binding post and/or earth terminal corroded  
Check that the phono earth binding post on the rear of the SXV1  
and the earth terminal from your turntable is free from corrosion.  
23  
 
Interconnect cables damaged  
Make sure that the integrity of your interconnect cables is sound  
and they are firmly connected to your turntable and the SXV1.  
SXV1 is close to external interference  
Check the proximity of your SXV1 to any possible source of  
EMI and/or RF interference, for example computers, televisions,  
amplifiers, speakers, etc. Ideally the SXV1 should be placed as  
close as possible to your turntable.  
Earth loop in system  
If your preamplifier and/or amplifier have an earth/ground lift  
switch, toggle it and check which setting sounds better. The  
signal ground of the SXV1 is isolated from earth by default, this  
means that there needs to be a connection to earth elsewhere in  
your system to alleviate hum.  
My speaker Tone arm set up incorrectly  
cones are  
moving  
excessively  
at low  
Check that your tone arm is set up correctly and it is properly  
weighted and balanced.  
Turntable susceptible to vibration  
frequencies  
Make sure that your turntable is solidly mounted on a surface that  
not prone to vibration.  
24  
 
11  
Specifications  
The correlation between published specifications and sonic  
quality can be unreliable. A list of numbers reveals virtually  
nothing. All technical measurements must be subject to  
qualitative as well as quantitative interpretation. Measurements  
of the SXV1 reveal excellent results by any standards. Tested at  
115V and 230V after a 10 minute warm up period.  
Sensitivity......................................................0.17mV to 7.6mV*  
Specifications  
in Brief  
Gain..................................................................... 40dB to 73dB*  
*
Input Impedance (R) ...............................................9W to 47kW  
Input Capacitance (C).......................................... 27pF to 760pF*  
THD+N .......................................0.01%, 1kHZ @ rated output**  
Signal to Noise Ratio  
Unweighted .................................................................>80dB**  
‘A’ weighted................................................................>85dB**  
Input Overload Margin........................................................18dB  
RIAA Accuracy ........................................ ±0.5dB, 20Hz–20kHz  
Output Impedance................................................................47W  
Rated Output................................................................ 0.75VRMS  
Maximum Output...........................................6.0VRMS (17.0Vp-p)  
Wideband Frequency Response...............................5kHz–40kHz  
Operating Class...............................................................Class A  
Power Consumption ........................................................... 1.6W  
Note:  
* User selectable  
** Measurements taken with lowest gain setting  
Audio Connections  
Inputs................................................... 1 pair unbalanced (RCA)  
Outputs................................................ 1 pair unbalanced (RCA)  
Other Connections  
IEC AC mains input receptacle  
Earth ground terminal  
Mains Input Voltage  
115V or 230V AC at 50Hz/60Hz  
(Set within the SXV1 at time of manufacture)  
Internal Mains Fuse Rating  
1 x 2SB 500mA fast blow  
(NOT user serviceable)  
25  
 
Overall Dimensions  
Width....................................................................215mm (8.5”)  
Depth....................................................................168mm (6.6”)  
Height.....................................................................57mm (2.2”)  
Weight  
Gross ...................................................................... 2.0kg (4.4lb)  
Net..........................................................................1.4kg (3.1lb)  
Specifications Sensitivity.................................................................0.17mV to 7.6mV  
Explained  
The Sensitivity figure indicates the input voltage required to  
achieve “rated” output (0.75VRMS). This can be adjusted to suit  
your cartridge by configuring the Gain setting of your SXV1.  
Gain .................................................................................. 40dB to 73dB  
The amount of amplification the preamplifier is asserting on the  
input signal. Gain can be calculated by dividing the rated output  
by the input sensitivity. User configurable via the DIP switches  
provided.  
Input Impedance..............................................................9W to 47kW  
The resistance “load” that is presented to the source component  
that is driving it. The Input Impedance can be set using the DIP  
switches to meet the requirements of your cartridge.  
Input Capacitance..................................................... 27pF to 830pF  
The capacitive “load” that is presented to the source component  
that is driving it. The Input Capacitance can be set using the DIP  
switches to meet the requirements of your cartridge.  
THD+N............................................... 0.01%, 1kHZ @ rated output  
Total Harmonic Distortion + Noise is the percentage of output  
signal which is made up of frequencies added due to harmonics  
of the fundamental frequency and noise. By using low-noise  
input circuitry and Class A amplification stages, Perreaux  
engineers have kept this figure to a minimum.  
Signal to Noise Ratio ......................................>80dB, Unweighted  
The ratio of desired signal to noise signals in the output. Phono  
reproduction is inherently susceptible to noise because of the  
extremely low output voltage of the cartridge (100’s of µV in the  
case of Moving Coil). This is why Perreaux engineers have  
designed the SXV1 to maintain a low noise floor.  
26  
 
Input Overload Margin ...............................................................18dB  
The amount of headroom available over and above the Rated  
Output.  
RIAA Accuracy................................................±0.5dB, 20Hz–20kHz  
This figure indicates how accurately the RIAA Equalisation  
circuitry follows the RIAA specification across the frequency  
range 20Hz to 20kHz. From 100Hz to 20kHz, the RIAA  
accuracy of the SXV1 is as low as ±0.2dB.  
Output Impedance.........................................................................47W  
Output Impedance indicates the ability of the unit to drive the  
Line Level Output. The low impedance of the SXV1 means that  
it will drive any combination of cable configuration (length,  
capacitance, etc.) and component impedance with ease whilst  
maintaining signal integrity.  
Rated Output........................................................................... 0.75VRMS  
This is the optimum operating level of the unit, offering the best  
performance whilst allowing  
a
large enough buffer to  
accommodate the unpredictable nature of music. It is the  
reference output level to which other specifications, such as  
sensitivity and gain, are referred. The Rated Output does not  
indicate the full capability of the SXV1.  
Maximum Output ................................................ 6.0VRMS (17.0Vp-p)  
The maximum output level possible before the onset of clipping.  
This figure indicates the extent of the dynamic range available  
from the SXV1.  
Wideband Frequency Response......................... 5Hz to 100kHz  
Describes the frequency range at which the output signal remains  
audible.  
Operating Class.......................................................................... Class A  
The driver circuitry and amplification stages all operate in Class  
A, providing the best possible THD+N and Signal to Noise Ratio  
specifications.  
27  
 
12  
Contact Details  
For more information please contact your Perreaux dealer, or  
contact:  
Perreaux Industries Ltd  
PO Box 47 413  
Ponsonby  
Auckland  
New Zealand  
Ph:  
Fax:  
+64 9 815 5452  
+64 9 815 5981  
28  
 

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