Ashly TRA-4150 manual

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Table of contents for the manual

  • Page 1

    Multi-Channel Power Amplifiers Operating Manual Po w erflex      ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 T oll-Free: (800) 828-6308 Fax: (716) 872-0739 www .ashly .com Cha nne l 1 Cha nne l 2 Cha nnel 3 Cha nn el 4 Pr ot ect The rm a l Clip Sig nal Po wer Powe r f lex 4400 Cha nne l 1 Cha nne l [...]

  • Page 2

    2 Operating Manual - P owerf le x Multi-Channel P ower Amplif ier T able Of Contents 1 INTR ODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 2 UNP A CKING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4[...]

  • Page 3

    3 Operating Manual - P owerfle x Multi-Channel P ower Amplifier CAUTI O N RI S K OF ELEC T R I C SH O CK DO NOT OPEN The lightning flash with ar rowhead symbol, within an equalateral triangle, is intended to alert the user to the pr esence of uninsulated "dangerous volt- age" within the pr oduct's enc losur e that may be of suf- fici[...]

  • Page 4

    4 Operating Manual - P owerf le x Multi-Channel P ower Amplif ier 1. INTR ODUCTION The Ashly Po werflex amplif iers combine the eff i- ciency of a MOSFET high-speed switching output stages with the sophistication of modern microprocessors and DSP technology to produce a multi-channel amplif ier with un- precedented v ersatility and po wer in a sing[...]

  • Page 5

    5 Operating Manual - P owerfle x Multi-Channel P ower Amplifier 3.3 A C Gr ounding Requirements T o reduce the r isk of ground loop hum, all system ground references should originate at the same point in your A C po wer distri b ution. Do not remov e the amplif ier’ s ground pin, as it creates a potential shock hazard. 4. CABLE REQUIREMENTS 4.1 I[...]

  • Page 6

    6 Operating Manual - P owerf le x Multi-Channel P ower Amplif ier 6. FRONT P ANEL INDICA T ORS 6.1 Po wer Switch When the unit is switched on there is a fi ve sec- ond delay , during which time the PRO TECT circuit will activ at e, disconnecting the speakers from the amplifier output. When turning of f the amplifier , the load is removed instantly [...]

  • Page 7

    7 Operating Manual - P owerfle x Multi-Channel P ower Amplifier 7. REAR P ANEL FEA TURES 7.1 Input Connectors The Powerflex inputs use 1/4" tip-ring-slee ve (TRS) phone jacks, balanced XLR jacks, and balanced two piece "Euroblock" style connectors. The three types of connectors are wired in parallel and may be used balanced or unbal-[...]

  • Page 8

    8 Operating Manual - P owerf le x Multi-Channel P ower Amplif ier 7.2 Input Ground Switch This switch separates internal circuit ground from the chassis ground on all inputs. Ground connections from an incoming signal are alw ays connected to internal cir- cuit ground, but float from the chassis ground as long as the switch is out. Unless ther e ar[...]

  • Page 9

    9 Operating Manual - P owerfle x Multi-Channel P ower Amplifier The Po werflex 6250 is cap able of three channels of bridged output, while the Po werflex 440 is capable of two channels of bridg ed output. T o use bridged mode, first press MONO from the Stereo/Mono switch on the channel pair to be brid ged. This sends the same audio signal to both c[...]

  • Page 10

    10 Operating Manual - P owerf le x Multi-Channel P ower Amplif ier 8. SELF-PR O TECTION FEA TURES Powerfle x amplifiers contain circuitry to self-pro- tect during e xtreme fault conditions. These fault condi- tions are: 1.) P ower supply under voltage 2.) P ower supply over voltage 3.) Output over cur r ent 4.) Heat sink overtemperatur e 5.) Unacce[...]

  • Page 11

    11 Operating Manual - P owerfle x Multi-Channel P ower Amplifier 9. TYPICAL APPLICA TIONS The Powerflex 6250 is essentially three stereo amplif ier s in one c hassis, each with dual stereo, dual mono, and bridged mono capabilities, while the Powerfle x 4400 is two stereo amplifiers (four channels), b ut with more po wer per channel than the 6250. T[...]

  • Page 12

    12 Operating Manual - P owerf le x Multi-Channel P ower Amplif ier 9.3 Bridged Mono Setup 9.4 T ypical P A Setup (Mo n o) (Mo n o) +- B ridge /70V Ch1 (+ ) (- ) Ch2 (+ ) (- ) +- B ridge /70V Ch3 (+ ) (- ) Ch4 (+ ) (- ) +- B ridge /70V Ch5 (+ ) (- ) Ch6 (+ ) (- ) OUTPUTS As hly Au dio In c. Made I n US A P o wer fl ex 6250 -+ Gro u nd + - Ch 1 In Ch[...]

  • Page 13

    13 Operating Manual - P owerfle x Multi-Channel P ower Amplifier 10. DESIGN THEOR Y Powerfle x amplifiers are based on ster eo dri v er modules that use digital processing to generate a spread- spectrum switching pattern between about 200KHz and 1.5MHz, depending on input signal amplitude and fre- quenc y . This overcomes the self-limiting and inhe[...]

  • Page 14

    14 Operating Manual - P owerf le x Multi-Channel P ower Amplif ier 11.2 Distorted Sound 1.) Clip LED is flashing r e gularly Amplif ier is being ov erdri v en. T urn down the in- put le vel control, or reduce the output le v el from the sig- nal source. 2.) Clip LED is not flashing at all Amplif ier input signal may be exceeding input headroom, whi[...]

  • Page 15

    15 Operating Manual - P owerfle x Multi-Channel P ower Amplifier T ypical Idle Current Powerflex 6250 Powerflex 4400 120V : 0.81A 120V : 0.9A 240V : 0.42A 240V : 0.5A Current with Typical A udio Program Mat er ial (4 ohm load - all Channels) Powerflex 6250 Powerflex 4400 120V : 6.5A 120V : 7.0A 240V : 3.3A 240V : 3.5A Connections Input: XLR - 1/4?[...]

  • Page 16

    Operating Manual - P owerf le x Multi-Channel P ower Amplif ier Printed in USA 10/01 6250-3 ASHL Y AUDIO INC. 847 Holt Road W ebster , NY 14580-9103 Phone: (716) 872-0010 Fax: (716) 872-0739 T oll Free (800) 828-6308 www .ashly .com  2001 by Ashly Audio Corporation. All rights reserved worldwide.[...]