background image

4

XP-12_om_10.17

Setup:

Please read and understand the operational instructions and safety 

issues associated with this product.  We go through great effort to 

make a soundly engineered, and supurbly performing product of 

lasting duribility.   

We understand that things infrequently go wrong, if you have any 

questions or problems please contact either your dealer or the 

factory, we are here to support the product and you, the user.

As with all audio electronics the power cable should be the last 

thing attached and the first one removed any time you hook up or 

remove equipment from the signal chain.

The preamplifier’s voltage and current rating are indicated by 

affixed tag on the rear of the preamplifier.  The preamplifier 

typically draws 30 watts during operation.  Please verify that the 

indicated voltage requirement of this preamplifier is consistent with 

the utility voltage at your location.

We have provided a standard IEC AC power cord that fits into 

the IEC 320 line receptacle at the rear of the preamplifier chassis. 

The preamplifier is equipped for operation with an earth ground 

provided by the users AC outlet.  Do not defeat this ground.  

There are a total of five inputs.  Two of the five inputs are balanced 

XLR only.  The other three inputs are single-ended only.  There are 

two pairs of outputs available with identical gain structure.  One 

pair Balanced, one pair single-ended.

Balanced inputs and outputs are via XLR connectors.  Single-

ended inputs and outputs are via RCA connectors.  On the XLR 

connectors, pin 1 is grounded, pin 2 is the positive signal, and pin 

3 is the negative signal. Left channel RCA connectors are marked 

with “L”.  Right channel RCA connectors are marked with “R”.  In 

a similar fashion balanced XLR inputs and outputs are marked with 

“L” for left and “R” for right channel. 

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 connector’s 

ground is in parallel with pin 1 of the XLR outputs and the RCA hot 

is fed from an independent summing junction that maximizes the X 

circuit benefits.  The RCA, single-ended, outputs are buffered from 

the balanced outputs.  You may use both the single ended and 

balanced outputs at the same time.  On the XLR, pin 1 is ground, 

pin 2 is positive, and pin 3 is negative.

Summary of Contents for XP-12

Page 1: ...1 XP 12_om_10 17 PASS TM XP 12 Owner s Manual ...

Page 2: ... 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 p...

Page 3: ...th vacuum impregnating and epoxy fill This gives us a very quiet transformer both electrically and mechanically The power supply circuitry itself is also lower noise and has additional filtering a little more complicated but worth it The XP 12 uses the single stage volume control borrowed from the XS line preamp This gives us one hundred 1 dB steps with lower noise and distortion while removing so...

Page 4: ...ation with an earth ground provided by the users AC outlet Do not defeat this ground There are a total of five inputs Two of the five inputs are balanced XLR only The other three inputs are single ended only There are two pairs of outputs available with identical gain structure One pair Balanced one pair single ended Balanced inputs and outputs are via XLR connectors Single ended inputs and output...

Page 5: ... discussed at length later in this manual The two select arrows logically control selections of the various inputs to the preamplifier Before selecting the theatre pass through pass thru option it is imperative that the input device on input number 5 has its gain set to minimum Failure to follow this precaution could result in a volume level intolerable to both ears and speakers The standard 2 vol...

Page 6: ...cking of the volume of the two balanced channels is possible with accuracy unavailable on any ordinary volume control assuring precise level steps and high common mode rejection in balanced circuits Wayne Colburn s exceptional volume control in conjunction with the fluorescent display gives the user ability to replicate volume levels with absolute accuracy in steps of roughly 1 dB The remote contr...

Page 7: ...he display When off is selected any other control function will cause the display to indicate product operational status for approximately 7 seconds and then the display will once again blank Pressing the display button a third time cycles back to a bright display We recommend the use of the balanced output mode where possible Balanced input to power amplifiers will typically retain the character ...

Page 8: ...d it ever be necessary to update the software that controls the functioning of the preamp only the socketed micro processor need be changed Muting relays which delay connection during turn on and shut off the output when insufficient power supply is available to maintain regulation guard the output of the preamplifier and offer protection to the power amplifier and loudspeakers XP 12 Specs Power c...

Page 9: ...North America customers should consult with their original Pass Labs dealer or distributor for warranty repair instruction prior to contacting the factory or shipping product to the factory for repair Non North American product must be returned to the country of origin for warranty service Foreign distributors are only required to offer warranty service on Pass Laboratories product that they have ...

Page 10: ... Labs dealers or to third parties located in the United States or Canada For more information please contact Pass Laboratories Inc Pass PASS Pass Labs Pass Laboratories Supersymmetery Aleph and Zen and are all registered trademarks of Pass Laboratories Inc and all rights thereto are protected by law PASS Pass Laboratories Inc 13395 New Airport Rd Suite G Auburn CA 95602 voice 530 878 5350 fax 530 ...

Reviews: