Perreaux SXV2 User Manual

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Silhouette SXV2

Phono Preamplifier

Owners Manual

Perreaux Industries Limited makes no warranty for the use of its products, other than those expressly contained in the warranty detailed herein. The Company assumes no responsibility for any errors which may appear in this document, reserves the right to change products or specifications detailed herein at any time without notice, and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property of Perreaux are granted by the Company in connection with the sale of Perreaux products, expressly or by implication.

mboob^ru® is a registered trademark of Perreaux Industries Ltd.

Terms and product names in this document may be trademarks of others.

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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

 

Highly flexible for any cartridge

 

Separate low noise input stages for Moving Magnet and

 

 

Moving Coil cartridges

 

Externally adjustable load impedance and capacitance

 

 

Multiple gain settings

 

Normal RIAA and IEC RIAA equalisation curves

 

Highest quality internal power supply featuring a custom

 

 

designed, fully shielded toroidal transformer and 220000F

 

 

of smoothing and filtering capacitance

 

Extensive EMI and RFI filtering

 

 

Optimal internal layout incorporating total separation

 

 

between channels

 

Enhanced audio design featuring highest quality PCB and

 

 

minimal internal wiring

 

Moving Magnet & Moving Coil compatible

 

 

High rated output

 

 

Compact

 

 

Stylish

The Perreaux “Silhouette” series takes you even closer to the elusive goal of “The Perfect Re-Creationof a Musical Event”.

From all of us at Perreaux Industries Limited, thank you for choosing the Perreaux Silhouette Series SXV2 Phono Preamplifier.

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ii Important Safety Instructions

Note: Please read all instructions carefully before attempting to operate your Perreaux “Silhouette” SXV2 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 SXV2 with the cover removed.

NEVER use any liquid inside the SXV2.

NEVER bypass any fuse.

NEVER attempt to repair the SXV2. In the event of a problem, please contact your Perreaux dealer.

NEVER expose the SXV2 to extremely high or low temperatures.

NEVER operate this product in an explosive atmosphere.

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iii

Table of Contents

i

Introducing the Perreaux Silhouette Series

....................................3

ii

Important Safety Instructions.............................................................

4

iii

Table of Contents ..................................................................................

5

1

Unpacking and Placement..................................................................

6

2

Instant Install..........................................................................................

7

3

Front Panel Functions ..........................................................................

9

4

Rear Panel Functions..........................................................................

10

5

Customising Your SXV2......................................................................

12

 

Impedance Loading Table...........................................................................

12

 

Capacitance Loading Table.........................................................................

13

 

Gain Setting Table..........................................................................................

13

 

RIAA Equalisation Curve ..............................................................................

14

 

ConfigurationExample....................................................................................

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6

Special Design Philosophies..............................................................

16

7

Special Design Features.....................................................................

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8

Care and Maintenance.......................................................................

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9

Warranty Information........................................................................

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10

Extended Warranty Registration Form..........................................

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11

Troubleshooting Guide......................................................................

23

12

Specifications........................................................................................

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13

Contact Details.....................................................................................

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5

1Unpacking and Placement

Unpacking The SXV2 is packaged for maximum protection. To open, sit theProcedure box upright and cut the reinforced tape at the top of the box. The

product can now be removed.

Pull the grey foam end caps off either side of the unit and remove the black material covering.

The SXV2 Phono amplifier is now unpacked and ready for further installation.

Note: Please retain all packaging material for future transport.

Box 1 x SXV2 Phono PreamplifierContents 1 x Product manual

1 x Detachable AC power cord

3 x Performance analysis charts

Placing Your The SXV2 should generally be placed close to your sourceSXV2 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 (RFI), electromagnetic interference (EMI) and the negative effects

associated with long cables.

Ventilation The SXV2 is a low power preamplifier. Ventilation requirementsRequirements are not considered to be an important factor in product

placement.

In the event that the SXV2 is to be incorporated into custom cabinetry, please refer to the dimensional information provided in the Specifications section of the manual (Chapter 12).

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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 SXV2. 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 SXV2 manual thoroughly as it incorporates many features, which will enhance its operation.

Configure SXV2 cartridge settings

Set the DIP switches on the SXV2 to correspond with the manufacturers specifications of your particular cartridge. Refer to Chapter 5 for DIP switch setup information.

Placement

The SXV2 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 SXV2 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 SXV2 into the system.

Connect turntable to SXV2

Connect the audio output from the turntable to the inputs at the rear of the SXV2. Also, connect the turntable earth terminal to the earth post on the SXV2. Refer to Chapter 4 for Rear Panel information.

Connect SXV2 to preamplifier

Connect the line level output of the SXV2 to one of your preamplifier inputs. Refer to Chapter 4 for Rear Panel information.

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Switch on SXV2

Insert the power cord supplied into the rear of the SXV2 and into the wall. Switch on the socket at the wall and turn on the power of the SXV2 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 preamplifier/amplifier

Set the volume to the minimum level and select the input that the SXV2 is connected to.

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 glass of wine. You’ll find the whole experience much more pleasurable whilst listening to music.

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3

Front Panel Functions

Power LED

This blue LED indicates the power status of your SXV2 Phono

Preamplifier.

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4

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 5.

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 12.

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 12.

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 5.

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 11.

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AC Mains Input

An IEC-standardmains 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 SXV2.

Caution! Never switch the SXV2 power ON or OFF with your amplifier turned ON or the respective input selected.

Serial Number/Voltage Label

The serial number is unique to your SXV2. 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.

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5

Customising Your SXV2

The Perreaux SXV2 gives you complete access to all cartridgeloading parameters for each channel via the 12-wayrear 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 and 11.

RIAA curve is selected using switch 12.

Caution! NEVER change the DIP switch settings of your SXV2 whilst it is turned on.

Note: Each DIP switch should be set to be a mirror image of the other channel.

Impedance Use this table to match the impedance loading characteristics ofLoading your SXV2 to that recommended by your cartridge manufacturer,Table 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

 

 

 

 

 

(Ω)

1

2

3

4

5

 

47000

UP

UP

UP

UP

UP

 

24000

DOWN

UP

UP

UP

UP

 

10000

UP

DOWN

UP

UP

UP

 

1000

UP

UP

DOWN

UP

UP

 

100

UP

UP

UP

DOWN

UP

 

10

UP

UP

UP

UP

DOWN

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Capacitance

Loading

Table

Note:

Gain Setting

Table

Note:

Note:

Use this table to match the capacitance loading characteristics of your SXV2 to that recommended by your cartridge manufacturer. Consult your cartridge documentation for the correct capacitance figure.

If no capacitance value is recommended, use the lowest setting.

C Load

 

Dip Switch Setting

 

(pF)

6

7

8

9

27

UP

UP

UP

UP

74

DOWN

UP

UP

UP

127

UP

DOWN

UP

UP

297

UP

UP

DOWN

UP

417

UP

UP

UP

DOWN

Remember to factor in tonearm and interconnect capacitance of your turntable; consult your turntable documentation for these values. See example following for explanation.

Use this table to configure the gain characteristics of your SXV2 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 its rated output voltage. Set the gain configuration where the “Sensitivity” of your SXV2 is within ±50% 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

 

Sensitivity

 

Mode

 

Dip Switch Setting

 

 

 

 

 

 

 

(dB)

 

(mV)

 

 

 

10

11

 

 

40

 

7.50

 

MM

 

UP

DOWN

 

 

50

 

2.37

 

MM

 

DOWN

DOWN

 

 

60

 

0.75

 

MC

 

UP

UP

 

 

70

 

0.24

 

MC

 

DOWN

UP

 

If more than one setting falls within ±50% 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.

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RIAA

Equalisation

Curve

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Two RIAA equalisation settings are selectable – Normal and IEC. The equalisation curves are indicated by the charts below.

Please select the appropriate equalisation setting for your recording or according to your personal preference.

 

RIAA

 

DIP Switch

 

 

 

 

 

Curve

 

12

 

 

Normal

 

UP

 

 

IEC

 

DOWN

 

Normal RIAA Curve

IEC RIAA Curve

Configuration Please use the following example of the popular Thorens TD 295Example Mk IV turntable equipped with an Ortofon Super OM 40

(Moving Magnet) cartridge as a guideline.

Thorens TD 295 Mk IV specifications

 

Tonearm and lead capacitance:

160pF

Ortofon Super OM 40 specifications

 

Recommended load resistance:

47kΩ

Recommended load capacitance:

200pF-400pF

Rated output voltage:

4.0mV

SXV2 configuration

 

Resistance loading:

47000Ω

Capacitance loading:

74pF

(SXV2 capacitance + turntable capacitance = total load capacitance 74pF + 160pF = 234pF, satisfying the recommended 200pF-400pF)

Gain: 50dB

(based on Sensitivity bracket of 4.0mV±50% 2.0mV-6.0mV)

RIAA equalisation curve:

Normal

DIP Switch Setting (left channel)

1 2 3 4 5 6 7 8 9 10 11 12

U U U U U D 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.

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6Special 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 SXV2 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 Leading British architect, John Pawson, writes:

Design

“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 as 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.

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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-endaudio 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”.

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7

Special Design Features

Construction The front panel is made from high quality solid 6.0mm (0.2”) thick aluminium extrusion featuring our trademark machined Perreaux logo and finished in durable and stylish satin chrome electroplate. On/off status is provided via a discreet blue LED. The chassis and cover are both manufactured from heavy gauge steel. No cover fixing screws are visible. Minimalist styling cues combine seamlessly to allow form and function to blend in harmony and are typical hallmarks of the Perreaux brand.

Circuit

Topology

The Power The SXV2 has an internal power supply. These designs areSupply 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 an overrated, fully shielded, internal toroidal power supply for the phono supply. 220000F of capacitance and extensive RFI and EMI filters are employed to provide a “rock-solid”,low noise, linear regulated, DC supply.

R & C With 10M to 47kM of Resistance loading and 27pF to 417pF ofLoading Capacitance loading selectable via external DIP switches, Perreaux engineers have designed the ultimate flexibility to enable the user to match any cartridge without the hassle of

opening the unit.

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Gain With a gain range of +40dB to +70dB, the SXV2 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 The RIAA equalisation utilises a robust architecture with highEqualisation precision, low noise resistors and highly linear, metalised polyester capacitors for optimum signal transfer. Deviation from

the RIAA specification is only ±0.5dB across the audio-band.

With both Normal and IEC RIAA equalisation curves to choose from, you can be guaranteed you’re getting the optimum from your valued record collection.

Low Noise Low-outputMoving Coil cartridges present very different sourceInput Stages characteristics to the phono preamplifier thanhigh-output

Moving Coil or Moving Magnet cartridges.

The SXV2 incorporates two separate, low noise, input stages selectable via external DIP switches. One tailored to specifically satisfy the requirements of interfacing to low-outputMC cartridges, the other tohigh-outputMC/MM cartridges.

PCB Layout 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 low noise, custom designed, power supply is physically segregated from the rest of the sensitive electronics.

Earth Special attention has been paid to ground planes to maintainIsolation sonic purity. All signal grounding is isolated from mains earth.

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