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7

X

s

 Preamp Owner’s Manual

 If  you have lost the jumpers, please contact either your dealer or 

the factory for replacements.  A single ended input without the XLR 

jumper will result in diminished performance.

You may now connect the power supply to it’s control chassis 

stages.  Other than being line voltage specific the power supplies are 

universal to the X

s

 Preamps.  Both right and left channel powerCON 

connections must be properly made up before AC power is applied.

powerCON cable end connectors insert into their respective 

chassis connectors and then lock with a 1/8 turn clockwise.  

Insert the cable connector into the chassis receptacle; turn to 

lock until they click and latch.   Verify that they latch and lock 

before proceeding.

Last cable to be attached is the mains cable.  Please make connection 

with the power supply IEC 320 socket first, house mains last.

Failure to follow this sequence can damage speakers and in some 

instances result in increased likelihood of  electrical shock.  As with 

all electrical devices the power cord (when used) is always the first to 

be removed and the last to be connected, no exceptions.

At this point you should be ready to play music.

The powersupply chassis connects to the electrical mains by a 

standard IEC 320 detachable power cord and to the control chassis 

by two 1.5 m powerCON umbilicals.  On the rear of  the power 

supply chassis is a single IEC 320 power inlet for connection to the 

mains, below a single 3AG fuse holder rated for AC mains duty.  To 

the left and right side two locking powerCON connectors, which will 

accept the supplied, interconnecting powerCON umbilicals.  

Safety disconnect is provided only by the detachable AC power 

cord.  Under normal operation access to the AC power cord must 

be maintained in the event of  electrical failure.  The AC power 

cord should be removed from the mains and then the power supply 

when the unit is left unused or during atmospheric electrical events 

(lightening storms).  Under normal circumstances and for best sonic 

performance the unit is left powered up continuously.

The control chassis is a true dual mono design: Right and left 

channels receive power independently via independent dedicated 

powerCON umbilical cables.  In all instances of  power and signal 

Physical Description 

and Operation

Summary of Contents for Xs Preamp

Page 1: ...1 Xs Preamp Owner s Manual PASS TM Xs Preamp Owner s Manual Sept 2013 ...

Page 2: ...ence is that the Xs comes in only two chassis where the XP 30 had at least three chassis one for supply and control and one chassis per channel for as many channels as you might reasonably want The Xs is designed solely for two channel operation and it fits in two larger boxes The XP 30 had a few unique features among them independently adjustable dual output sets for use in bi amping and the high...

Page 3: ...he XP 30 separate chassis Each channel and the digital control circuits have their own isolated supplies each mounted on it s own board in a separate chassis The three separate power supplies use the lowest noise transformers available from Plitron and they incorporate EMI filters on the AC line input secondary output fast soft recovery rectifiers large storage capacitance and extensive regulation...

Page 4: ...nding prong The grounding prong is essential for personal safety and proper operation of this product If the grounding prong does not fit your outlet please consult an electrician and have the obsolete receptacle updated before operating this device Power Cords Pass Labs provides a power supply cord that meets all legislated requirements for the market in which the product was originally sold If y...

Page 5: ... apparatus has been damaged in any way such as when a power cord is damage when the device has been exposed to moisture or liquids been dropped or does not operate normally in any way For Units With Externally Accessible Fuse Receptacle Unplug the device from all sources of power before changing or inspecting any fuse Replace fuse only with one of same physical size type and rating as that specifi...

Page 6: ...dependent chassis connected to each other by twin umbilical cable terminated at both ends with a powerCON connector The connector should never be attached or removed from either chassis with the power supply chassis attached to mains power Once the Xs Preamp chassis are placed in their physical location you may start making input and output connections you may wish to reference the following secti...

Page 7: ... used is always the first to be removed and the last to be connected no exceptions At this point you should be ready to play music The powersupply chassis connects to the electrical mains by a standard IEC 320 detachable power cord and to the control chassis by two 1 5 m powerCON umbilicals On the rear of the power supply chassis is a single IEC 320 power inlet for connection to the mains below a ...

Page 8: ... remote control function Buttons are labeled Mute Mode Input and MUTE Pressing the mute button once quiets the output of the Xs Preamp Pressing the button a second time restores normal output MODE Pressing the mode button brings up the status of the slave auxillary output The relative level of the Slave Aux output can then be set by the INPUT and buttons on the Xs Pre front panel This function is ...

Page 9: ...to a maximum of 9 5dB Volume v decreases the output level in 0 5 dB steps to a minimum of 89 5 dB Pass Thru is a multi step software operation that selects the pass thru input virtual input 6 and slowly ramps the gain up to 0 dB At any time during the ramp up period a second button push will cancel the Pass Thru command and operation Pass thru is intended to be used with a multi channel processor ...

Page 10: ...d XLR You may use a mix of RCA and XLR not however on the same channel RCA inputs will function without the jumper but gain will be low by 6dB and noise will be up by a like amount The Pass Thru input deserves special mention Pass Thru is identical to all other inputs with one exception Pass Thru is associated with a software sequence that sets the gain of that input to 0 dB specific for use with ...

Page 11: ... the volume control directly in 0 5 dB steps 89 5 dB though 9 5 dB as indicated on the main display as true gain figures The Slave auxiliary outputs may be set equal to or less than the levels of the Master main outputs Once set from the front panel of the control chassis the Slave auxiliary outputs will accurately track the Master main from either the front panel volume control or the hand remote...

Page 12: ...cord rated at 15 amps The safety ground is provided by this power cord and attached at the chassis in the conventional approved manner The AC power input to the power supply runs through an RF filter which reduces high frequency noise coming into and going out of the amplifier power supply This filter and the safety ground both depend upon a quality earth ground from the ground pin on the power co...

Page 13: ...ories 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 530 878 5358 web passlabs com ...

Page 14: ...er warranty service on Pass Laboratories product that they have imported verifiable by serial number Please note Conditions of warranty service 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 rights and details Any modifications to Pass Laboratories products that have no...

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