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TUBE PACPROFESSIONAL TUBE PREAMPLIFIER/COMPRESSORUSER’S GUIDE

The easiest way to set the threshold control is to start with the con-trol fully clockwise. After setting the Gain control, slowly turn theThreshold c

switch also reverses the polarity of the 1/4” output jack. In theNormal (out) position, the signal is in-phase. In the Reverse (in)position, Pins 2 an

RREEAARR PPAANNEELL CCOONNNNEECCTTIIOONNSSPPoowweerrThe Power switch supplies and removes power from the unit. TheTube PAC should be turned “on” onl

plugged into the Tube PAC’s output (or use a ground-lifted audiocable). This interrupts the ground path and therefore breaks theloop.AAPPPPLLIICCAATTI

nect the XLR output jack of the Tube PAC to the XLR input of yourmixer, however most affordable mixers do not allow you to bypasstheir internal preamp

worse. The choice is yours. Please realize that unauthorized alter-ations to the Tube PAC will result in voiding the warranty.AA RR TT TTuubbee PP

WWEE’’RREE OONN--LLIINNEE!!For Product information, questions, applications, tips, answers and general discus-sion with A R T employees look for A R

WWAARRRRAANNTTYY AANNDD SSEERRVVIICCEE IINNFFOORRMMAATTIIOONNLLiimmiitteedd WWaarrrraannttyyWarranty service for this unit will be provided by App

5) Include with your unit: a return shipping address (we cannot ship to a P.O. Box),a copy of your purchase receipt, a daytime phone number and the de

TTAABBLLEE OOFF CCOONNTTEENNTTSSIntroduction 2Registration 2Features 3Overview 4Setting Up 5Unpacking 5AC Power Hookup 5Audio Connections 5Installat

IInnttrroodduuccttiioonnThank you for purchasing Applied Research and Technology’sTube PAC. You’ve undoubtably noticed that the Tube PAC is as coolsou

FFeeaattuurreessThe Tube PAC is a unique product. It contains two independentaward-winning circuit designs - one of the finest tube microphonepreampli

OOVVEERRVVIIEEWWThe Tube PAC (PreAmplifier/Compressor) is a multi-purpose toolfor audio engineering and recording. Enclosed in a table-top (and1/2 rac

pression without hearing the compressor.SSEETTTTIINNGG UUPPUUnnppaacckkiinnggYour Tube PAC was packed with care at the factory. The shippingcarton wa

SSAAFFEETTYY PPRREECCAAUUTTIIOONNSSWarning: To avoid the risk of shock or fire, do not expose this unitto moisture. Do not remove metal panels from c

to decrease gain. Selection of the gain range is made with the+20dB gain switch. You may control two ranges of gain with thiscontrol, +26 to +60dB and

TTuubbee DDrriivvee//GGaaiinn RReedduuccttiioonn DDiissppllaayyFour LEDs display how the tube gain is affecting the input signal.These LEDs are cal