Perreaux SXH2 audio amplifier
Contents
1. 1 x SXH2 Headphone amplifier 1 x Product manual 3 x Performance analysis charts 1 x Detachable AC power cord The SXH2 should generally be placed close to your source equipment thus keeping interconnect cabling between the SXH2 and associated components as short as practical This will reduce the systems susceptibility to radio frequency interference and the negative effects associated with long cables The SXH2 is a low power amplifier Ventilation requirements are not considered an important factor in product placement In the event that the SXH2 is to be incorporated into custom cabinetry please refer to the dimensional information provided in the Physical Dimensions section of the manual Chapter 12 Note Note PRERR RE AURA 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 SXH2 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 Please take the time to read the SXH2 manual thoroughly as it incorporates many features which will enhance its operation Placement The SXH2 is a sensitive low power amplifier 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 a2. SXH2 not turned on Make sure the SXH2 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 SXH2 Mains power not turned on Check if the power is turn on at the mains socket on the wall 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 SXH2 Source not turned on Check that your source component is plugged in to the mains and the power is turned on Source not set to play Ensure that your source component is playing the recording you would like to listen to and that pause is not pressed No volume setting Make sure that the volume on your SXH2 is set to a suitable level SXH2 set to incorrect input Confirm that the input on your SXH2 is connected to the appropriate source output Headphones not connected Check that your headphones are firmly inserted into the jacks on the front of the SXH2 18 I can hear a hum coming through my headphones The volume control is at maximum and output level too low The volume control is too sensitive PRER RE AURX Input and or output sockets corroded Check that the input and output RCA sockets on the rear of the SXH2 are free from corrosion Interconnect cables damaged Make sure that the integrity of your interconnect cables is sound and they are firmly c
3. Signal to Noise Ratio unweighted 105dB The ratio of desired signal to noise signals in the output Headphone reproduction is susceptible to noise because of the nature of the environment to reveal every detail This is why Perreaux engineers have designed the SXH2 to maintain a low noise floor Dynamic Headroom E gt 3 0dB This indicates the SXH2 can provide more than enough extra power to cope with the sharpest musical transients Without adequate headroom an amplifier can become unstable under clipping conditions Perreaux amplifiers are intrinsically stable under all dynamic conditions 22 PRERIRE AUX 12 Physical Dimensions 216mm 8 5 A E Pa x eg x 3 i x x x 4 x pei Sn sr 105mm lt p rat GC S 4 pe t 4 NE spo i x l H 4 x F y o PERREAUX samm VV L 129mm 51 23 13 IPRERRE AUX E Contact Details For more information please contact your Perreaux dealer or contact Perreaux Industries Ltd PO Box 305 Mosgiel Dunedin 9053 New Zealand Ph 64 3 489 2975 Fax 64 3 489 2976 E mail nz info perreaux com Internet www perreaux com 24 PRERIRE AUX A Installation Notes 25
4. NEVER operate this product in an explosive atmosphere NN CG U1 R WW ma s mm 0 WN O PREEIR RIE AURA Table of Contents Introducing the Perreaux Silhouette Series rina 2 Important Safety Instructions sis 3 Table of Contents tnrirriirier rie rie rincari iii nieianine 4 Unpacking and Placement sn reina 5 Instant INStall urina 6 Front Panel Functions rire ere eee iii einen 8 Rear Panel Functions rici eineine 9 Special Design Philosophies sis 11 Special Design Features rrrrreririe rien 13 Care and Maintenance rr rire ieri 15 Warranty Information nine 16 Extended Warranty Registration FOrm nn 17 Troubleshooting Guide nanas 18 pecht oha o n K TT T 20 Physical DIMENSIONS nissan 23 Contact Details acha ananasa annad adnan anaana eine einen 24 Unpacking Procedure Note Box Contents Placing Your SXH2 Ventilation Requirements PREEIR RE AURA Unpacking and Placement The SXH2 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 foam protecting end caps off either side of the unit and remove the black material covering The SXH2 Headphone amplifier is now unpacked and ready for further installation Please retain all packaging material for future transport
5. cup of coffee You ll find the whole experience much more pleasurable whilst listening to music Note PRERIRE AUX E Front Panel Functions Power LED This blue LED indicates the power status of your SXH2 headphone amplifier Headphone Jacks Two 6 35mm 4 stereo headphone jacks are provided allowing a second person to enjoy the pure sound offered by the SXH2 The construction of the jacks makes for effortless crackle and pop free insertion and will give a lifetime of continuous contact performance Please ensure that the resulting impedance of the two headphone sets is not below 80 Use the following equation to calculate the total impedance Rr R R2 Ri Rp Volume Control The high quality machined aluminium knob is the sole user interface reminding the user at every touch of the superior build quality designed into the SXH2 Volume control motion is smooth and accurate providing absolute control with near infinite gain resolution PRERIRE AUX i Rear Panel Functions Www perreaux com Caution r 0UTPUT a E e i INPUT Right and Left Line Inputs Input from source component 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 Gain Selection Switch Select HIG
6. custom designed fully shielded toroidal transformer and 22000uF of smoothing capacitance n Optimal internal layout incorporating total separation between channels a Enhanced audio design featuring highest quality PCB and minimal internal wiring a Gain selection switch a Line out connections o High power output a Stable down to 40 a Dual stereo headphone jacks o Compact o Stylish he VESTE Silhouette E takes you even D to the elusive goal of he P erfect Rao ofa Musical Event From all of us at Perreaux Industries Limited thank you for choosing the Perreaux Silhouette Series SXH2 Headphone Amplifier Note PRERE NUX A Important Safety Instructions Please read all instructions carefully before attempting to operate your Perreaux Silhouette SXH2 Headphone Amplifier 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 SXH2 with the cover removed NEVER use any liquid inside the SXH2 NEVER bypass any fuse NEVER attempt to repair the SXH2 In the event of a problem please contact your Perreaux dealer NEVER expose the SXH2 to extremely high or low temperatures
7. 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 In the event that you are experiencing difficulty with your SXH2 please as a first step consult the troubleshooting guide in Chapter 10 For further assistance please contact your Perreaux dealer 16 SERRE Au 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 3 489 2976 Mail Perreaux Industries Ltd PO Box 305 Mosgiel Dunedin 9053 New Zealand E mail nz info perreaux com Alternatively complete the online Warranty Registration Form on our website www perreaux com 3 Year Extended Warranty Form PRERREAUXO Name Address Suburb City Country Telephone E mail Website Product SIIIL H IO JU EI TITIE S X H 2 Serial No Dealer Purchase Date dd mm i ARS A na 17 10 There is no output from my system PRERREAUX A Troubleshooting Guide Please use this guide if you are experiencing any problems with the SXH2 in your system It will provide possible solutions for some given symptoms
8. H gain or LOW gain to provide the best possible volume range for your particular headphones enabling the optimum listening level to be achieved Serial Number Voltage Label The serial number is unique to your SXH2 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 Never attempt to connect the unit to the incorrect voltage On Off Switch When operating the switch down power is applied to the SXH2 PRER RE AURA 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 Right and Left Line Outputs Line level output 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 10 Minimalist Design PRERIRE AUX E 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 ha
9. Silhouette SKH2 Headphone Amplifier Owners Manual PRERRE AUX IFREIRRE AU K 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 PERREAUX is a registered trademark of Perreaux Industries Ltd Terms and product names in this document may be trademarks of others Key Features IPRERRE AU E Introducing the Perreaux Silhouette Series Designed as a range of high quality yet affordable modules the Silhouette series will compliment and enhance your existing system Drawing on our extensive knowledge gained from more than a quarter of a century of developing highest quality audio products the Silhouette concentrates our legendary design and build quality into a compact package without sacrificing performance The Perreaux Silhouette series provides performance levels never before seen in its class n Class A signal stages Highest quality internal power supply featuring a
10. as been lavished on the PCB layout The unit is symmetrical in design 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 Special attention has been paid to ground planes to maintain sonic purity All signal grounding is optimised to provide a platform for a black background and increased dynamic range Two gain settings are available enabling optimum performance and listening levels to be achieved from both high and low impedance headphones The output stage is capable of delivering 1 0Wpms per channel into a 640 load and is stable down to 40 enabling the SXH2 to effortlessly drive a vast array of headphones with the control and authority that people have come to expect from Perreaux products Two stereo headphone jacks give the option of connecting two sets of headphones allowing another party to be enveloped by the detailed and dynamic musicality of the SXH2 Please ensure that the resulting impedance of the two headphone sets is not below 80 Use the following equation to calculate the total impedance Ry R R2 Ri R 14 Note Cover Front Panel Note PRER RE AURA Care and Maintenance Please switch the unit off and remove the cord set from the rear of the Headphone Amplifier before attempting to clean your SXH2 in the manner described below Never apply liquid directly to t
11. date 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 SXH2 Voltage Swing 31 5Vpp Loud transients call for a sudden burst of power from the amplifier to drive the headphones This force is voltage Peak to peak voltage is a more useful specification than Watts when it comes to delivering power to a speaker Input SENSILIVILY arcana aaa 1 45 Venus The Input Sensitivity figure indicates the input voltage required to achieve rated output 1 0Wems into 640 Maximum Gain iii 15 0dB The amount of amplification the amplifier is asserting on the input signal Gain can be calculated by dividing the rated output by the input sensitivity Input ele Eine EE 50kQ The resistance load that is presented to the source component that is driving the SXH2 21 PRERIRE AUX E THDAN isa lient 0 001 1kHZ into 640 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 signal stages Perreaux engineers have kept this figure to a minimum Frequency Response 5Hz to 60kHz 0dB 0 25dB Describes the frequency range where the amplitude or strength of the output signal deviates by no more than 0 25dB
12. he SXH2 Never use abrasives Never rub in a circular motion The cover features 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 SXH2 front panel features a high quality electroplate finish Over time the surface may retain finger marks and may need to be cleaned to restore it to original condition Regular Cleaning Gently wipe the front panel with a very clean cotton cloth Wipe across the surface and never in a circular motion Removing Stubborn Marks Only attempt this infrequently as too regular or vigorous application may damage the surface Apply a small quantity of any car polish containing carnauba wax to a very clean cotton cloth The car polish must state Safe for Clear Coats as the polish will therefore contain the absolute minimum amount of abrasive compound Gently wipe over the front panel in lateral motion allow to dry then gently wipe off with a very clean cotton cloth 15 1 Year Limited Warranty 3 Year Extended Warranty Obtaining Service PRERIRE AUX i Warranty Information The Pe
13. 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 11 PRERIRE AUX E 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 12 6 Construction Circuit Topology The Power Supply PRREERIRE AUX E Special Design Features The beautifully styled curving front panel is milled from solid 6 0mm 0 2 thick aluminium extrusion and finished in a satin chrome electroplate The front panel also features the PERREAUX logo machined into the solid aluminium The chassis and cover are both manufactured from heavy gauge steel No cover fixing screws are visible The Silhoue
14. mplifiers computers etc Place the SXH2 close or near the source component in order to make as short a connection as possible Turn off associated components This minimises the potential to damage any other components when connecting your SXH2 into the system Connect source to SXH2 Connect the audio output from the source component to the inputs at the rear of the SXH2 Refer to Chapter 4 for Rear Panel information Connect headphones to SXH2 Connect a set of headphones to one of the jacks on the front panel Refer to Chapter 3 for Front Panel information Make sure the nominal impedance of the headphones is not lower than 8Q Switch on SXH2 Insert the power cord supplied into the rear of the SXH2 and into the wall Switch on the socket at the wall and turn on the power of the SXH2 by setting the power switch down Caution IER RE AUX i 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 source component Power up your source component and start your favourite recording Slowly increase the SXH2 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
15. onnected to your source and the SXH2 SXH2 is close to external interference Check the proximity of your SXH2 to any possible source of EMI and or RF interference for example computers televisions amplifiers speakers etc Ideally the SXH2 should be placed as close as possible to your source 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 SXH2 is isolated from earth by default this means that there needs to be a connection to earth elsewhere in your system to alleviate hum Gain setting too low Toggle the gain configuration switch at the rear of the SXH2 UP to the HIGH gain position Make sure you turn down the volume before changing this setting Gain setting too high Toggle the gain configuration switch at the rear of the SXH2 DOWN to the LOW gain position 19 11 Specifications in Brief PRERIRE AUX i 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 SXH2 reveal excellent results by any standards Tested at 115V and 230V after a 10 minute warm up period Rated Power Output per channel 2 0Wrwmg into 320 VIS SERE b s bais NSA EE SEC NEE trust ete 1 0WR
16. rms into 640 Seeerei 215mWryws into 3000 Voltage S Wig aaa sin uai anna 31 5V p p UE EE 1 45Vrms Maximum Gain hi duna EE 15 0dB Gain Adjustment Low Settings iaia Mines 10dB High Setting es EE Ee 0dB Input Impedance nr iaia ari 50kQ Total Harmonic Distortion THD N Fypically sfue tease die 0 001 1kHz into 640 20HZ t0 UE lt 0 005 Frequency Response 5Hz 60kHz 0dB 0 25dB Signal to Noise Ratio Rated Output unweighted ss 105dB Dynamic Headroom rated with music gt 3 0dB Power Consumption Ides 2 tee ache ee ante lol gaia 500mW Maximum at 3 5W per channel into r 8 0W Audio Connections Inputs ica 1 pair line level RCA Outputs ugereegt en deene SERA 1 pair line level RCA eege ns AT nn 2 stereo headphone jacks 6 35mm 74 Other Connections IEC AC mains input receptacle Mains Input Voltage 115V or 230V AC at 50Hz 60Hz Set within the SXH2 at time of manufacture 20 Specifications Explained PRERIRE AUX E Internal Mains Fuse Rating 1 x 2SB 500mA slow blow NOT user serviceable Overall Dimensions Width ANN RR E E ETE E E 216mm 8 5 Depth See e Lee E elen 181mm 7 1 STT 58mm 2 3 Weight Grossman ius lai 2 0kg 4 41b de EE 1 4kg 3 11b Rated Power Output per channel 1 0Wepms into 640 This is the optimum operating level of the unit offering the best performance whilst allowing a large enough buffer to accommo
17. rreaux SXH2 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 SXH2 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 305 Mosgiel Dunedin 9053 New Zealand For the Extended Warranty Registration Form please refer to Chapter 9 The extended warranty for the Perreaux SXH2 is three 3 years from the date of purchase If during the warranty period the SXH2 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 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 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 its 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 SXH2 Neither this warranty nor any other warranty express or
18. s 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 SXH2 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 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
19. tte SXH2 is stylish yet functional and exhibits typical hallmarks of the Perreaux brand Input Stage Input Stage 1 i 1 1 1 f 1 1 t i Voltage Amplifier Voltage Amplifier 1 1 I 1 I 1 f t 1 t 1 i Line Input amp AC Input Line Output I EA Output Stage Output Stage Left Channel Righe Channel Power Supply Volume Output z Control The SXH2 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 fully shielded internal toroidal power supply A total of 22000uF of smoothing capacitance and low pass RC filters are employed to provide a rock solid super low ripple linear DC power supply 13 Single Channel Block Diagram Input Stage PCB Layout Signal Ground Gain Selection High Power Output Dual Outputs Note PRER RE AURX Input Input Stage Volume Control Utilising a stable current source along with accurate current mirroring circuitry the input stage of the SXH2 in combination with the overall circuit topology provides precise detail resolution and definitive sonic transparency Special attention h
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