USER MANUAL
Contents
1. e Maximum power consumption 70 W GROUNDING e Separated ground and earth signal e Connection optional between earth and ground to cancel all ground loops SAFETY FEATURES e Automatic switching to MUTING if the AC line drops or is interrupted e Automatic protection against tape loops GOLDMUND MIMESIS 37S Analog Preamplifier 14 TECHNICAL SPECIFICATIONS Ctd FRONT PANEL CONTROLS e MUTING POWER switch with Led control VOLUME control BALANCE control RECORD MENU switch PHASE EDIT switch o 7 INPUT CONTROL switches with Led control REAR PANEL CONNECTORS AND CONTROLS e Power connector e Earthing post yellow green e Output connectors RCA right and left e Output connectors RCA right and left for Tape 1 and Tape 2 e Signal grounding post black e Input connectors RCA right and left for Tape and line inputs e Link float e RS232 Connector POWER SUPPLY CONTROLS e POWER cord socket 3 lugs e MAINS FUSE 2 5A slow blow e VOLTAGE SELECTOR 110 220 V SIZE AND WEIGHT Preamplifier e 440 W x 380 D x 90 H mm Power Supply e 440 Wx 280 D x 60 H mm Total Weight 15 kg WARRANTY e 3 years parts and labor GOLDMUND MIMESIS 37S Analog Preamplifier 152. have different optimum positions Trial and error is often therefore necessary GOLDMUND MECHANICAL GROUNDING In the Goldmund Mimesis 22 Signature edition preamplifier Goldmund has implemented its renowned construction method to provide an optimized vibration evacuation path To get all the benefits of this improvement the MIMESIS 37S must be located on a very rigid support directly coupled to the building Avoid any decoupling material If carpet decouples the preamplifier and ground use pin point supports to couple the furniture to the floor GOLDMUND MIMESIS 37S Analog Preamplifier 11 SAFETY FEATURES amp MAINTENANCE PROTECTION CIRCUIT The Goldmund Mimesis 37S preamplifier uses a special protection circuit to protect the power amplifier and the speakers against a power supply failure or AC shut down of the preamplifier MAINTENANCE To clean your Mimesis use only a soft clean dry or slightly damp cloth Avoid using domestic cleaning products Warning Always turn the power off before cleaning your preamplifier There are no user serviceable parts inside the Mimesis 37S Unauthorized servicing or alteration invalidates the manufacturers warranty All inquiries relating to product servicing and operation should be referred to the local authorized retailer supplying and supporting your Goldmund equipment GOLDMUND MIMESIS 37S Analog Preamplifier 12 TEC
3. HNICAL SPECIFICATIONS INPUT e Input impedance 39 kOhms e Maximum input level balanced 9 6 V RMS e Maximum input level unbalanced 4 8 V RMS e Separated input level adjustment for each of the 7 line inputs 12 to 12 dB OUTPUT e Output impedance 50 Ohms e Maximum output level balanced 19 2 V RMS e Maximum output level unbalanced 9 6 V RMS FREQUENCY RESPONSE e These values for any level to maximum output level e 0 dB 20 20 kHz e 3 dB 0 2 900kHz GROUP DELAY e Propagation delay lt 300 ns stable with frequency from DC to 200 kHz DISTORTION With 1 V rms output level 80 KHz measurement bandwidth 600 ohms termination impedance e THD unbalanced in to unbalanced out 0 002 e flat with frequency e THD balanced in to balanced out 0 001 e flat with frequency e IMD unbalanced in to unbalanced out 0 002 e IMD balanced in to balanced out 0 001 GOLDMUND MIMESIS 37S Analog Preamplifier 13 TECHNICAL SPECIFICATIONS Ctd SPEED e Slew rate of the amplification stages 200V us e Rise time lt 400 ns CROSSTALK e Separation gt 105 dB between channels 20Hz 20kHz NOISE e Signal to noise ratio on line input gt 120 dB 0 01 Hz 10 Mhz e Weighted ASA A gt 130 dB OPERATING TEMPERATURE e Room temperature 30 to 40 degrees Celsius e Internal temperature 45 to 70 degrees Celsius POWER e Nominal line voltage 117 or 234 V e Input voltage range 10
4. USER MANUAL GOLDMUND MIMESIS 37S Analog Preamplifier ES FE Thank you for purchasing the Goldmund MIMESIS 37S ANALOG PREAMPLIFIER Please take some time to read this manual It will provide you with useful information to make your pleasure of listening to the MIMESIS 37S even higher INTRODUCTION GOLDMUND MIMESIS 37S Analog Preamplifier Goldmund was founded in 1978 and has ever since been dedicated to the accurate reproduction of sound and image At Goldmund we strive to lead in the creation development and manufacture of the industry s most advanced technologies including audio and video systems home networking and music distribution The guiding principle at Goldmund is to produce a precise sound with the least possible loss of quality through the different stages Goldmund will never adopt a technology before it is sufficiently developed to satisfy the high quality standards we set This is why Goldmund has often rejected mainstream technologies and developed its own Table of Contents nob OD R SETTING UP THE MIMESIS 37S POWER SUPPLY CONTROLS amp UTILIZATION SOUND QUALITY OPTIMIZATION SAFETY FEATURES amp MAINTENANCE TECHNICAL SPECIFICATIONS GOLDMUND MIMESIS 37S Analog Preamplifier 3 10 11 12 13 WwW A R N I N G No connection or manipulation may be made before reading these instructions and observing all safety warnings This extremely high quality Preamplifier possesses new techn
5. cables from source devices to the line inputs numbered 1 to 7 labeled IN1 to IN7 Connect tape machines to any inputs and to the Tape output plugs except INS no tape out GOLDMUND MIMESIS 37S Analog Preamplifier 8 POWER SUPPLY The main POWER switch is located on the back panel of the Goldmund Mimesis 37S power supply In regular use this switch should be left permanently ON and the circuits of the preamplifier activated or deactivated using the STANDBY ON OFF When the POWER switch is switched ON the preamp will become operative after few seconds delay to ensure proper stabilization of all the circuitry and avoid any unwanted noise After this delay the output of the preamplifier is connected to the power amplifier The preamplifier can be powered off by switching the POWER switch to the OFF position A special safety circuit switches the preamp to MUTE to avoid any disturbance reaching the power amplifier and the speakers even if the preamplifier is disconnected from the mains supply by accident However to optimize the sound quality of the preamplifier and ensure the reliability the M37S should remain powered ON continuously and is only deactivated using the Standby function GOLDMUND MIMESIS 37S Analog Preamplifier 9 CONTROLS amp UTILIZATION The Goldmund Mimesis 37S is designed to capture control shape and nurture the fragile source inputs supporting adjustment of volume and balance to deliver
6. ical features which are or will become necessary for accurate power amplification of high quality analog sources Observe general electrical safety precautions particularly with regard to avoiding water moisture and heat To reduce the risk of electric shock do not remove the covers and refer servicing to qualified personnel The installation instructions must be carried out in full and the mentioned precautions taken to provide the satisfaction the Mimesis 37S is designed to provide and to avoid jeopardizing personal and equipment safety or impairing performance Nevertheless in the Mimesis 37S Preamplifier Goldmund engineering excellence delivers extreme performance in a simple and convenient format that we hope you will enjoy for many years to come GOLDMUND MIMESIS 37S Analog Preamplifier 4 alle SETTING UP THE MIMESIS 37S PRELIMINARIES For exacting technicians musicians and all high fidelity music purists who demand the very best in reproduction we strongly recommend the use of top quality power amplifiers with the Mimesis 37S Most of the analog signal integrity delivered by the preamplifier can be destroyed by using lower quality amplifiers For perfect analog amplification Goldmund recommends the Goldmund Telos series of power amplifiers The connection between the analog sources and the preamplifier as well as between the preamplifier and the power amplifiers are also critical Ultra low reflection interconnec
7. r apart as the cabling allows The preamplifier should ideally not be located above the power supply The power supply most certainly should never be located above the preamplifier as this would force transformer vibration evacuation through the audio circuits on its way to ground The power supply also generates a significant amount of heat and the ventilation requirements noted above also apply The preamplifier has been designed with four adjustable conical feet These are used to ensure proper vibration transmission to the preamplifier support in order to evacuate all detrimental vibrations inside the unit following the famous Goldmund Mechanical Grounding principle Depending on the flatness of the chosen location you may have to adjust one or more of these feet GOLDMUND MIMESIS 378S Analog Preamplifier 6 lx 1 SETTING UP THE MIMESIS 375 Ctd LINE VOLTAGE ADJUSTMENT Warning If the line voltage provided is not appropriate as supplied please consult your dealer ATTENTION At the 220V position the Goldmund Mimesis 37S preamplifier will function properly for main line voltages between 200V and 240V At the 110V position the main line must deliver between 105 and 125V If your main supply operates out of these tolerances please consult your Goldmund dealer This fuse is located on the power cord receptacle and can be accessed by raising the cover using a small screwdriver when the power cord has been removed ensu
8. ring power is disconnected before handling Use a 2 5A slow blow fuse Warning Always ensure that the fuse cover is fitted Fuses are for fire prevention and do not protect against risk of electric shock CONNECTIONS Warning Always remember that a plug with bared connectors is dangerous if in contact with a live socket This appliance must be earthed Connect the non rewireable power cord supplied to the back of the power supply and plug it into the nearest wall plug Use only a 3 lugs grounded plug for safety and noise reasons Replacement mains leads can be obtained from your Goldmund retailer To get the best sound of the preamplifier avoid any multiple plugs or extension cords GOLDMUND MIMESIS 37S Analog Preamplifier 7 1 SETTING UP THE MIMIESIS 375 Ctd CONNECTIONS Ctd Warning Take care to always handle the cable by the connectors Never twist the cable excessively or attempt to connect or disconnect the connector by handling the cable body in place of the connector Connect the cabling from the power supply output to the preamplifier input point labeled Power Warning The next stage in setting up your Mimesis 37S is to connect your sources power amplifiers and other peripheral devices All devices should be disconnected from mains power until safe Connect the preamp analog output interconnects to the power amp using the RCA female sockets labeled analog outputs Connect the interconnect
9. t cables are absolutely mandatory to retain the time integrity that the preamplifier is designed to provide In all typical cases Goldmund recommends using the special Goldmund Lineal interconnect cables UNPACKING You will find within the two GOLDMUND MIMESIS 37 S transit boxes The Analog Preamplifier The Power Supply Unit Preamplifier to Power Supply cable The mains powercord The remote control and batteries This manual Please keep the packaging in case you need to transport the MIMESIS 37S any time in the future This packaging has been designed specifically to protect the MIMESIS 37S in transit Use of alternative packaging is likely to result in damage invalidating warranty cover GOLDMUND MIMESIS 37S Analog Preamplifier 5 a SETTING UP THE MIMESIS 375 Ctd CHOICE OF PREAMPLIFIER LOCATION The Goldmund Mimesis 37S preamplifier generates a significant amount of heat It is necessary to allow adequate ventilation for proper cooling of the heat sinks Avoid any location which is not properly ventilated Avoid stacking equipment and do not locate the preamplifier close to equipment that is sensitive to temperature The power unit has been especially designed to minimize transformer vibration effects on the audio circuits One consequence of this strategy is that the power supply unit is physically separate connected by only the 150mm cabling The power supply and preamplifier should be located as fa
10. your desired output signal The primary control functions supporting these processes are outlined below STANDBY To activate stand by mode use the remote control INPUT SELECTION To select the source you want to listen to use the left hand rotary switch or use the remote control VOLUME ADJUSTMENT The right hand volume level adjustment knob is used to adjust VOLUME If volume is set to a value of zero outputs will be muted You can use also the remote Control BALANCE ADJUSTMENT Balance adjustment by using the Remote Control MUTE Press the MUTE PWR button to mute output on the Remote Control GOLDMUND MIMESIS 37S Analog Preamplifier 10 SOUND QUALITY OPTIMIZATION WARM UP SONIC EFFECT If the preamplifier has been left un powered for some time the optimum sound quality may only be attained after many hours The critical circuits have to warm up to around 55 degrees Celsius 131 degrees Fahrenheit before achieving their optimal performances This is why Goldmund recommends that the MIMESIS 37S is always powered on ABSOLUTE PHASE Your Mimesis 37S preamplifier has an absolute phase inverter switch Absolute phase optimization can be difficult to achieve with CD s since at the current state of the technology the phase coherency of this source is not sufficient to allow a sufficient difference between the two positions Many vinyl recordings are made without care for the absolute phase and different LP s can
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