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11

XA60 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:

Содержание XA60

Страница 1: ...1 XA60 Owner s Manual pass TM XA60 Owner s Manual May 18 2006 ...

Страница 2: ...rcuit topology that we descriptively characterize as being Single ended Class A This new topology combines the very best characteristics of Pass Laboratories X series amplifiers and the highly rated Pass Laboratories Aleph The XA series is the marriage of a highly refined Aleph output stage with the patented Supersymmetry X front end The emphasis of the XA series is to accentuate performance and s...

Страница 3: ...le into any load presented by a loudspeaker but will provide less power into other than 8 ohms The XA60 accommodates both single ended RCA and balanced inputs XLR Input impedance s are 11 kohm unbalanced and 22 kohm balanced to permit integration with the widest possible range of upstream components You can position this amplifier anywhere you wish but it must have ventilation We do not recommend ...

Страница 4: ...ar panel It will be either 240 volts 220 volts 120 volts or 100 volts all units protected by a type 3 AG slow blow fuse of the appropriate ampacity The operational voltage is not user changeable Transformers are input voltage specific and their change is not a trivial matter The frequency rating of the AC line source is 50 to 60 Hz in all cases Please verify that the amplifiers indicated voltage r...

Страница 5: ...se Some powered subwoofers require an audio signal ground reference and their makers may suggest that a black speaker terminal is where this voltage reference might be found On complementary designs which would be typical of all power amps produced by Pass Laboratories this is an incorrect and unsafe assumption On all Pass Laboratories power amplifiers a reference of 0 volts will be found only at ...

Страница 6: ...product is very low This is small comfort to the few but take it easy and give us a call if you have problems People are interested in how long it takes for these amplifiers to break in Depending on the resolution of the rest of your audio chain you may or may not notice any break in of the XA60 beyond the first 50 hours of operation You will likely notice the difference in sonic character between...

Страница 7: ...lightly less distortion at a given voltage current level than resistive loads The XA circuit was designed to be quite happy driving electrostatic speakers and any other esoteric loads we know of We have a general recommendation about interconnects and speaker cables which is that they should cost less than the amplifier and contain at least some conductive material We have tried a lot of products ...

Страница 8: ...supply filter capacitors These caps are used to create the unregulated output stage rails RC filtering is used to passively remove ripple from the supply rails All the power transistors in the product are hyper matched parts with gate voltages matched to 0 5 and all devices taken from the same manufacturing lot codes made on the same wafer So how long will this hardware last It is our experience t...

Страница 9: ...l Slew rate plus minus 50 V uS Output Noise 300 uV unweighted 20 20 kHz Balanced CMRR approx 60 dB 1 kHz DC offset 100 mv Power Consumption approx 300 watts Temperature 25 degrees C above ambient at idle Dimensions 19 W x 7 H x 20 D Shipping Weight 68 lbs For more information please contact Pass Laboratories Inc P O Box 219 24449 Foresthill Rd Foresthill CA 95631 Tel 530 367 3690 Fax 530 369 2193 ...

Страница 10: ... 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 modif...

Страница 11: ... 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 a...

Страница 12: ...speakers putting Pass Laboratories X amplifiers on the bottom for power and control conjoined with Alephs on the top for that smooth warm midrange and top end We well appreciate these complementary differences and for the past few years Pass Laborato ries has been at work marrying these two design concepts into a single amplifier topology The trick was to create an amplifier which carries the best...

Страница 13: ...d for preamplifier circuits high quality amplifier front ends and other very low power output stages US Patent 5 710 522 describes the single ended Class A power ampli fier biased by a constant DC current source which negatively ghosts the speaker load with simple but effective current modulation If you have followed developments in audio for the last 10 years you know this design as the Pass Labo...

Страница 14: ...ve ambient temperature so that actual chip temperatures are about 70 degrees below their rating The output devices are designed to last a very long time under these conditions with a probable life of about 50 000 hours The power supply of the XA 200 uses elaborate RF filtering and noise sup pression designed to block AC noise and line DC The substantial toroidal power transformer is followed by hi...

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