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Powerflex
Multi-Channel 70V Power Amplifiers
Operating Manual
Channel 1
Channel 2
Channel 3
Channel 4
Channel 5
Channel 6
Protect
Thermal
Clip
Signal
Channel 1
Channel 2
Channel 3
Channel 4
Protect
Thermal
Clip
Signal
A S H LY AUDIO INC.
8 4 7 H o l t R o a d
Webster, N Y
Toll-Fre e : ( 8 0 0 ) 8 2 8 - 6 3 0 8 F a x : ( 5 8 5 ) 8 7 2 - 0 7 3 9
Powerflex
670
Power
Powerflex
470
Power
1 4 5 8 0 - 9 1 0 3 P h o n e : ( 5 8 5 ) 8 7 2 - 0 0 1 0
w w w. a s h l y. c o m
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Table of Contents
Related Manuals for Ashly Powerflex 670
Summary of Contents for Ashly Powerflex 670
- Page 1 Powerflex Multi-Channel 70V Power Amplifiers Operating Manual Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Protect Powerflex Thermal Power Clip Signal Channel 1 Channel 2 Channel 3 Channel 4 Protect Powerflex Thermal Power Clip...
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Page 2: Table Of Contents
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier Table Of Contents INTRODUCTION ............4 UNPACKING . - Page 3 Operating Manual - Powerflex Multi-Channel 70V Power Amplifier TYPICAL APPLICATIONS ..........10 9.1 Independent Channel 70V System .
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Page 4: Introduction
2.) With typical audio on all channels: tion, all monitored and controlled by the latest in minia- (Powerflex 670 with 200W loads, Powerflex 470 with 300W turized microprocessor technology. loads) 120V: 10A... -
Page 5: Cable Requirements
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier CABLE REQUIREMENTS RACK-MOUNTING REQUIREMENTS Input Cables Mechanical Be sure to use shielded cable whether balanced or Powerflex amplifiers are designed to fit in stan- unbalanced. Shielding which is properly grounded will dard 19-inch equipment racks. The front panel rack-mount protect the signal from outside electrical interference such ears are sufficiently strong for most applications, however as RF, fluorescent lighting, and computer/display emis-... -
Page 6: Front Panel Indicators
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier Channel 1 Channel 2 Channel 3 Channel 4 Channel 5 Channel 6 Protect Powerflex Thermal Power Clip Signal FRONT PANEL INDICATORS shut off until the measured temperature drops below about 70°C. The amplifier should be able to maintain proper Power Switch operation at an ambient room temperature of 50°C (122°F) When the unit is switched on there is a five sec-... -
Page 7: Rear Panel Features
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier * Powerflex 670 shown - Powerflex 470 only has channels 1-4. REAR PANEL FEATURES Balanced Input Connectors Input The Powerflex 70V amplifier inputs use balanced two piece "Euro- block" connectors for easy installation. It is recommended that balanced signals be used whenever possible to take full advantage of the amplifier's common mode rejection properties, and to reduce ground-loop problems. -
Page 8: 80Hz Low Cut Filter
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier Po w e r f l e x 670 shown - Po w e r f l e x 470 only has inputs 1-4. channel 1, a single input channel connection can supply Normal/Bridge Switch all amplifier channels with the same signal before their The Normal/Bridge switch is used to operate two... -
Page 9: Speaker Outputs
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier P o w e r f l e x 670 shown - P o w e r f l e x 470 only has channels 1-4 5.) Replace the fuse with the appropriate size (see In bridge mode, the speaker output con- #6 below), and press the fuseholder back into the AC inlet nections are taken from the two (+) screw terminals where... -
Page 10: Power Supply Undervoltage
(four channels), but with more power per channel The above conditions are checked by the signal than the 670. Note: The Powerflex 670 is used for the processing module on a switching cycle by switching cycle following application details, but the 470 is used in a simi- basis and are therefore monitored as often as a million or lar fashion, to a maximum of four channels. -
Page 11: 9.1 Independent Channel 70V System
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier 9.1 Independent Channel 70V System Possible Application: Input Section: Up to Six Different Inputs Multiple Zone 70V Systems where each zone has different audio program Independent/Parallel Switches - Out Normal/Bridge Switches - Out Levels Controls - Used Per Input Channel Up To Six Different Amplifier Inputs Speaker Outputs - Up To Six Different Outputs... -
Page 12: 9.3 Bridged 140V System
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier 9.3 Bridged 140V System Input Section: Possible Application: Up to Three Different Inputs 140V system where each zone has different audio program Independent/Parallel Switches - 1® 2 IN, 3® 4 IN, 5® 6 IN Normal/Bridge Switches - All IN Levels Controls - Only Channels 1, 3, or 5 Used Bridged Channels 1&2... -
Page 13: Design Theory
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier DESIGN THEORY TROUBLESHOOTING TIPS Powerflex 70V amplifiers are based on stereo 11.1 No Audio Output driver modules that use digital processing to generate a spread-spectrum switching pattern between about 200KHz 1.) Power LED not lit: and 1.5MHz, depending on input signal amplitude and fre- quency. -
Page 14: Hum Or Buzz Noise
Operating Manual - Powerflex Multi-Channel 70V Power Amplifier signal level higher than +12.8 dBu will cause distortion in Hum is usually caused by ground currents flow- the amplifier. Turning down the input level controls will ing between different pieces of equipment. Ground cur- not eliminate distortion if the input headroom is exceeded. -
Page 15: Specifications
Crosstalk: < -80dB (20Hz - 1KHz) We thank you for your expression of confidence in Ashly products. The unit you have just purchased is High Pass Filter: 80Hz, 12dB/octave, internal select protected by a limited five year warranty. To establish the... - Page 16 2003 by Ashly Audio Corporation. All rights re s e rv e d w o r l d w i d e . PFX70-0 Printed in USA 08/03...
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