background image

7

XA200.5 Owner’s Manual

So the amplifier is sitting there unconnected.

Make sure that the rear panel power switch/breaker is off  (down).  
Plug the AC cord into the back of  the amplifier, and then into the 
wall.  Then turn the power switch/breaker on (up).  The lights in 
your house will dim for a moment as the power supply charges the 
capacitors.  

If  your amplifier uses a circuit breaker and not a fuse, please note 
that this circuit breaker is not a “safety device” or “emergency 
disconnect” for this product.  It will provide current limiting which 
will protect the amplifier, but it does not provide personal shock 
protection in the manner of  a ground-fault interrupter.  One more 
reason why it is important not to defeat the Earth connection of  
your power cord.

On the front panel, the “Standby” LED indicator should be glowing 
blue, indicating that AC power is available and the capacitor banks 
are charged.  If  the “Power” LEDs are lighting the meter, use the 
front panel stand-by button to go to stand-by mode.

Now turn off  the rear power switch and unplug the AC power cord 
from the wall while you connect the speakers and inputs.

Check to make certain that the loudspeaker cables aren’t shorted at 
the loudspeaker end,  connect speaker cables to the output binding 
posts on the amplifiers, observing correct polarity.  The output 
binding posts will accept either bare wire or spades.  (Regulatory 
agencies in many countries have banned binding posts that will 
accept a banana plug, forcing us to abandon this option.)  Make sure 
that your speaker wires only attach to the outputs of  the amplifier, 
not to each other and never to the amplifier case.  

Remember the warning about treating the output connections as 
ground, particularly if  you are using a powered subwoofer with this 
amplifier.  If  you need a ground, use the one provided specifically on 
the rear panel of  the amplifier.

The amplifier may be driven single-end or balanced, your choice.  
Single-ended input will always occur through the RCA connector and 
balanced input will always occur through the XLR connector.  

Again, if  you drive the amplifier single-ended then leave the supplied 
jumpers in place between pins 1 & 3 on the input XLR.  

On the XLR connector pin 1 is ground, pin two is positive input and 

Summary of Contents for XA200.5

Page 1: ...1 XA200 5 Owner s Manual pass XA200 5 Owner s Manual October 2007 ...

Page 2: ... power amplifiers based on the SuperSymmetric topology U S Patent 5 376 899 which elicits high power and performance from simple circuits with minimal feedback The first X amplifier the X1000 was intended as the premier example of the power of this principle delivering 1000 watts rms into 8 ohms at low distortion By itself of course this is no miracle but you have to consider that products with co...

Page 3: ...ts are the result of trial and error and extensive listening Measurement of performance is important to us and we feel that well designed product sounds good and measures good Apparently it is possible to make an amplifier which measures well but which does not please the ears and so we let our ears be the final judge X 5 and XA 5 amplifiers utilize the same basic circuit topology and gain devices...

Page 4: ...carefully and critically to our amplifiers with a wide variety of associated equipment and we take our time with it Musical performance is most important and is the basis of our success over the years It s true that we also value the other things The design and manufacturing decisions have to balance subjective performance against reliability cost specs and ego in approximately that order That is ...

Page 5: ... minimum noise this switch should be toggled in stand by mode We have provided a standard IEC power cord that fits into the standard 15 amp IEC receptacle at the rear of the amplifier chassis With the exception of the largest of the X and XA series there is no difficulty running two amplifiers on a single 15 amp circuit Given the high current draw we generally do not recommend active line conditio...

Page 6: ... give lower noise and slightly less distortion They are recommended unless your favorite source component has only RCA outputs Also on the rear panel are the output connections for the loudspeakers On stereo amplifiers there is one pair per channel and on mono amplifiers we provide two pairs wired in parallel to facilitate bi wiring a loudspeaker As you are probably familiar the red one is positiv...

Page 7: ... power switch and unplug the AC power cord from the wall while you connect the speakers and inputs Check to make certain that the loudspeaker cables aren t shorted at the loudspeaker end connect speaker cables to the output binding posts on the amplifiers observing correct polarity The output binding posts will accept either bare wire or spades Regulatory agencies in many countries have banned bin...

Page 8: ...able and the failure rate of our amplifiers 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 amplifier beyond the first few hours of operation You will very likely n...

Page 9: ...find any really exceptional cable made of gold please gift us a couple hundred feet Fortunately this amplifier is not sensitive to the capacitive inductive character of some of the specialty speaker cables so feel free to experiment We have found that about 90 per cent of bad sounding cables are really bad sounding connections and we recommend that attention be paid to cleanliness of electrical co...

Page 10: ...bout it This is a conservatively built industrial design not a frail tube circuit run on the brink of catastrophic failure If it breaks we will simply get it fixed so sleep well Pass Laboratories PO Box 219 24449 Foresthill Rd Foresthill CA 95631 USA www passlabs com sales passlabs com service passlabas com tel 530 367 3690 fax 530 367 2193 pass Pass Pass Labs Pass Laboratories Supersymmetery Alep...

Page 11: ...11 XA200 5 Owner s Manual ...

Page 12: ...e and customer rights for product purchased outside the United States may vary depending upon the distributor and local laws Please check with your local distributor for specific information Any modifications to Pass Laboratories products that have not received written factory approval nullify all claims and void the warranty Should a modified product be returned to the factory for repair the owne...

Page 13: ...e 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 ...

Reviews: