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12

X1 Owner’s Manual

Water and moisture:  Electrical devices should not be used near 
water ( as per example, near a bathtub, washbasin, kitchen sink, 
laundry tub, wet basement or swimming pool ).  Care should be 
taken such that objects do not have the opportunity to fall, and that 
liquid is never spilled onto or into the device enclosure through 
openings.

Power Sources:  An electrical device must  be connected to a mains 
power source in strict accordance with the supplied  product owner’s 
manual.  Please verify that the AC mains voltage specified in the 
product manual matches those requirements indicated on the unit 
and the AC voltage provided to your location by the power company.

Grounding:  Adequate precautions should be taken so that the 
grounding provisions built into an electrical product are never 
defeated.

Power Cords:  Pass Laboratories provides a power supply cord that 
meets all legislated requirements for the market in which the product 
was originally sold.  If  you choose to substitute an after-market 
product we urge you to choose one that is fully safety rated by the 
necessary local authority.

Power Cord Protection:  Power supply cords should be routed so 
that they are not likely to be walked on, abraded, or pinched by items 
placed on or against them, paying particular attention to cords where 
they enter plugs or exit from a device.  Never under any circumstance 
insert a cut or damaged power cord into a mains power socket.

Power and Signal:  Cables should never be connected / 
disconnected with equipment powered up.  Failure to heed this 
warning may damage or destroy equipment.

Ventilation:  Power-amplifiers run hot, but you should be able to 
place your hands on them without discomfort.  You must allow for 
this heat in installation, by providing for free air circulation around 
the product.  Electronics should not be subjected to sources of  
excessive radiant heat. Excessive heat can shorten the life of  the 
product and may cause the electronics to self-protect and shut down.

Servicing:  To reduce the risk of  fire, electrical shock or other 
injuries, the user should not attempt to service the device beyond 
that which is described in the operating instructions.  All other 
servicing must be referred to qualified service personnel.

For your protection please 

read the following:

Summary of Contents for X1

Page 1: ...1 X1 Owner s Manual pass TM X1 Owner s Manual Aug 10 2006 ...

Page 2: ...inimizes the number of components in the signal path and yet retains exemplary objective performance specifications It pushes the edge of the art in exploring how much subjective quality is obtainable with a new but very elementary gain stage The X1 employs a new type of volume control that offers an order of magnitude better performance than seen before in an electronic control It provides over 6...

Page 3: ... the rear panel of the main chassis and the power supply The connectors are a tight fit but should never need to be forced The X1 will function with either DB 25 on the power supply chassis The additional DB 25 is for future performance enhancements We have provided a standard AC power cord that fits into the IEC line receptacle at the right rear of the power supply chassis The preamplifier is equ...

Page 4: ...have arranged that it will not place its output on the tape out which will prevent you from accidentally creating a feedback connection with your tape machine The main outputs are located at the left hand side viewed from the rear of the rear panel two male XLR connectors and two RCA connectors R right and L left The RCA connectors ground is in parallel with pin 1 of the XLR outputs and the RCA ho...

Page 5: ...ed it allows the user to switch a nominal 12 volts DC at maximum draw of 50 milliamps to these binding posts In some instances this voltage may have the ability to control products from other manufacturers but we by no means have a comprehensive listing of their compatible features If you have questions about compatibility your service technician and dealer are an excellent source of information I...

Page 6: ...eme virtual right of the mode selection is the function labeled gain This control allows you the user to adjust the gain of the X1 to extract the best possible performance out of a variety of source components of different manufacturers The Low Gain setting allows for 4 dB of gain from the X1 and the Hi Gain allows for 14 dB of gain The 10 dB difference between these two settings require that you ...

Page 7: ...and a minimum number of components is a key element The fewer parts in series with the signal path the better Adding more parts and gain stages may improve measured specs but will seldom improve the perceived sonic quality 2 The characteristic of gain devices and their specific use is important Individual variations in performance between like devices are important as are differences in topologica...

Page 8: ... repeatable and accurately controlled The micro processor only controls the functions of the preamplifier At no time does any of the input or output signal come into contact with the digital control signals The digital circuits are powered by a power supply that is completely separate from the analog supply Should it ever be necessary to update the software that controls the functioning of the pre...

Page 9: ...about 10 hours of turn on The omission of a power switch is intentional The X1 consists of two full size aluminum chassis Both chassis are machined from solid aluminum stock by computer controlled milling machines There are no stamped or sheetmetal products in this product One of the full size chassis houses the control functions active elements and display The second chassis houses the power supp...

Page 10: ...ms balanced Input Impedance 33 kOhm unbalanced 66 kOhm balanced CMRR typical 55 dB 1KHz Crosstalk typical 85 dB 1KHz Output Noise floor 125 dBV 20Hz 20 KHz External amp turn on 12 volts DC 50 mA Power Consumption 35 watts Dimensions chassis 17 W x 11 5 D x 3 5 H each Shipping Weight 46 pounds in packing carton X1 Specifications Pass pass Pass Labs Pass Laboratories Supersymmetery Aleph and Zen and...

Page 11: ...of origin for warrantee service Foreign distributors are only required to offer warranty service on Pass Laboratories product that they have imported Please note Conditions of warranty service and customer rights for product purchased outside the United States may vary depending upon the distribu tor and local laws Please check with your local distributor for specific rights and details Any modifi...

Page 12: ...one that is fully safety rated by the necessary local authority Power Cord Protection Power supply cords should be routed so that they are not likely to be walked on abraded or pinched by items placed on or against them paying particular attention to cords where they enter plugs or exit from a device Never under any circumstance insert a cut or damaged power cord into a mains power socket Power an...

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