1 amplifiers & preamplifiers installation instructions pa640 six channel power amplifier.
2 general information to enhance the ease of installation and obtain optimum performance from the pa640, we recommend that you first become familiar with all its features and special capabilities by studying the descriptions and input panel power remote on/off c h 1 c h 2 bridged stereo level level ...
3 amplifiers & preamplifiers pa640 panel descriptions sylmar, ca made in u.S.A. Power remote on/off c h 1 c h 2 bridged stereo level level line inputs line inputs bridged stereo c h 3 c h 4 level c h 5 c h 6 line inputs bridged stereo 1 2 3 4 5 3 4 5 3 4 5 pa640 six channel power amplifier ® 1v .2v ...
4 pa640 panel descriptions p o w e r m a n u a l o n + – – + c h 2 c h 1 protection s p e a k e r s + – – + c h 6 c h 5 protection + – – + c h 4 c h 3 protection speaker impedance stereo mode: 8 ohms min. Bridged mode: 16 ohms min. M a n u a l o f f ( r e m o t e o n / o f f ) s p e a k e r s s p e ...
5 amplifiers & preamplifiers pa640 aluminum mounting panel (preferred) fins fig. 5 vertical mounting (preferred) shelf, wall, etc. 3-inch spacing (minimum) pa640 aluminum mounting panel (preferred) heat dissipation fins fig. 4 horizontal mounting installation physical location and mounting when you ...
6 installer's notes ____________________________________________________________________________ ____________________________________________________________________________ ____________________________________________________________________________ _________________________________________________...
7 amplifiers & preamplifiers installation (cont'd) connecting the pa640 i when making connections to the pa640 be sure the power cord is unplugged. Proceed as follows: stereo mode connections 1. Using good quality rca type patch cables, connect the l and r output jacks of the driving preamp to the c...
8 c h 1 c h 2 bridged stereo level line inputs video audio l r 1 rca type patch cords preamp outputs zpr68, etc. Pa640 input panel pa640 speakers & ac panel + – – + c h 2 c h 1 protection s p e a k e r s + – b r i d g e d be sure speakers are connected with correct polarity as shown. Speaker systems...
9 amplifiers & preamplifiers problem 1. Power indicator does not light – no sound. 2. No sound from ch2, ch4 or ch6 when stereo operation is desired. 3. Sound cuts in and out every 3 to 5 seconds. 4. Pa640 does not turn off when remote input voltage goes to 0 volts. 5. Pa640 becomes very warm, shuts...
10 fig. 9 a multi-zone system using two pa640's 12vdc confirm ir in power +12v g s ir out gmm1a current sensor threshold st a tus on ir out gcm1 current sensor threshold st a tus on ir out gcm1 current sensor threshold st a tus on ir out gcm1 current sensor threshold st a tus on ir out gcm1 current ...
11 amplifiers & preamplifiers pa640 © 1996 xantech corporation. All rights reserved. Design and specifications subject to change without notice. Ch1 input ch2 input stereo bridged + + + + inverter + – – + feedback discrete driver & output stages + feedback protection mute and protection protection l...
