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Forum: Professional Amps

  1. JDF/JMF amplifiers

    Hi folks, does any of you know the JDF/JMF power amplifiers? Are the current JMF amplifiers similar in sound as the older JDF? Thank you in advance. Chris

    Started by dazzdax, 06-24-2008 11:38 PM
    • Replies: 8
    • Views: 2,161
    08-29-2010 02:59 AM Go to last post
  2. Classic BGW 750 E

    Hello All, I am sitting in my studio listening to a vintage BGW 750E that sounds beautiful on my stock Yamaha NS-10M's. I have checked through this amp and the only thing I can find wrong is the fan defeat will not defeat the fan, it runs wide open all of the time. I'm using balanced 1/4"...

    Started by missionrec, 07-30-2009 10:19 AM
    • Replies: 2
    • Views: 1,615
    08-02-2010 07:12 AM Go to last post
  3. AB SYSTEMS 821 amp 2 x 300 WPC or 1 x 600 WPC bridged

    killer amp for use with a sub, in perfect shape. In dual connection mode this amp sums the two inputs; and plays back the summed input across two subs at a minimum of 300 WPC x 2. When bridged to mono; the left channel input is played across the speaker bridges at 600WPC. It makes a heck of a sub...

    Started by lgvenable, 07-20-2010 10:56 PM
    • Replies: 1
    • Views: 177
    07-31-2010 10:24 AM Go to last post
  4. Should I buy this Crown?

    Is this a good amp, or will it amplify DC and smoke my voice coils? I'm looking for a good power amp which will be used for my Altec 9844-8b speakers for general listening and maybe my EV Sentrys for some studio monitoring. ...

    Started by Skywave-Rider, 12-10-2007 09:31 AM
    • Replies: 27
    • Views: 2,998
    07-20-2010 09:00 PM Go to last post
  5. SR 6630 Amp Questions

    Ok, it says on the back it was made by UREI, but the front has a nicely made plastic logo saying "Nocturne". Who or what is Nocturne? Amp came with a pair of 4412A's that had thin stickers with the same "Nocturne Stock #" that you can see on the rear of the amp, so it mast likely spent time...

    Started by 4343, 03-14-2010 09:37 PM
    • Replies: 3
    • Views: 469
    07-17-2010 11:18 PM Go to last post
  6. Thumbs up New Hafler Amplifiers

    In this thread http://www.audioheritage.org/vbulletin/showthread.php?t=249 near the end I mentioned that I'd gotten four new Hafler amps for less than $1000 during the phase-out of Hafler gear by Rockford Corporation. Here's a little thread on them, in case any of you get a chance to...

    Started by Titanium Dome, 08-12-2006 08:50 PM
    • Replies: 36
    • Views: 6,590
    06-20-2010 02:18 PM Go to last post
  7. Yamaha PC4002M or PC5002M WANTED.

    Hi Forum, I am after decent well maintained Yamaha PC4002m or PC5002M pro amplifier for my project, if you have one for sale. Please contact us. Email - mccarmack@hotmail.com Mob 00 61 4 66 77 1365

    Started by Ravinambi, 06-11-2010 01:48 PM
    yamaha pc4002m
    • Replies: 0
    • Views: 178
    06-11-2010 01:48 PM Go to last post
  8. Question Popping HF sound!

    Well I’ll cut to the chase! Basically I have this elusive popping sound on the Marantz 1050 left front HF it’s a mild popping that is cursed by the refrigerator when shutting off or is it when starting up as well. I need to isolate/resolve this as its not a good thing especially on the HF side....

    Started by JBL 4645, 08-17-2009 06:30 PM
    • Replies: 51
    • Views: 3,962
    05-25-2010 03:42 AM Go to last post
  9. Soundcraftsmen MA5002

    Just picked this up. Anyone have any experience's with this amp or Soundcraftsmen??? Also does anyone have the service manual on hand.

    Started by John, 06-12-2006 12:24 PM
    • Replies: 14
    • Views: 6,023
    05-09-2010 05:23 AM Go to last post
  10. cleanest HI-FI amps for c60 soveriegns

    so, i solved my crossover issue by buying a Pioneer SF850. now i need three amps (perhaps 2) to tri-amp my C60s i will preamp it with my Mcintosh c26 (waiting on a C22 tube -but don't know when i'll get that) i currently have them running with their original crossovers using a Mac 2502...

    Started by aaronz28, 04-18-2010 10:48 AM
    • Replies: 2
    • Views: 345
    04-18-2010 06:07 PM Go to last post
  11. Schematic - Soundcraftsmen MA5002??

    Anyone have a schematic for a Soundcraftsmen MA5002 Amp?:hmm:

    Started by John, 07-28-2006 10:11 AM
    • Replies: 9
    • Views: 2,210
    04-07-2010 01:17 PM Go to last post
  12. Bose 4401 + 1801

    hello to all members, i am from France I am new on this forum and I read with great interest the various topics .. we might lose! For a long time I wanted to realize a childhood dream: have a hifi system 70's old with JBL speakers, I like these speakers, I had long ago 4311B of which was...

    Started by mm54, 04-11-2009 08:19 PM
    • Replies: 31
    • Views: 5,823
    03-15-2010 03:55 AM Go to last post
  13. JBL/UREI 6230 transformer hum problem

    I scored what seemed to be a good deal on ebay for this amp. To my dismay when I hooked it up there was a loud distracting hum from the transformer, which isn't acceptable in my studio environment. I know it's the transformer because it happens when only the power is hooked up, and I can hear it...

    Started by jamesdstark, 06-03-2009 09:47 PM
    • Replies: 17
    • Views: 3,231
    03-10-2010 12:01 PM Go to last post
  14. Any Experience with the Carver PM-900?

    There is one available locally for $249. In mono at 12 ohms, it can push 600 watts through my W15GTI sub. Has anyone had any experience with this amp..., good or bad? Would the PM-1.5 be a better match? Thanks. Todd

    Started by toddalin, 01-04-2006 09:45 AM
    • Replies: 4
    • Views: 2,395
    02-18-2010 03:21 PM Go to last post
  15. Gerald Stanley of Crown

    Over on ProSoundWeb is an updated? interview with Gerald Stanley of Crown. I like audio history and Gearald is one of my heroes. It's short but maybe you will enjoy it also. http://www.prosoundweb.com/article/a_conversation_with_gerald_stanley/

    Started by 1audiohack, 12-31-2009 06:28 PM
    • Replies: 8
    • Views: 1,576
    01-13-2010 10:49 AM Go to last post
  16. Smile Help in wiring Altec 9442A transformer primary from 110v to 220v

    Hi all, I just purchase a Altec 9442A anniversary edition and a Altec 9444a power amp. how ever , it is original intent for for U.S market. so the primary transformer is wire for 110v operation voltage. Can anyone Please highlight to me on how to wire the main transformer input to accept 220v or...

    Started by altec9442a, 10-06-2009 05:34 AM
    • Replies: 5
    • Views: 1,894
    01-03-2010 03:58 AM Go to last post
  17. Amcron Geodyne 2 - Crown?

    Anyone have experince with this amp and is it any good? Is Amcron an Crown amp with another name or is it also a simplar version of Crown? If it's the same as Crown just with another name for Europe, anyone know what model it's equal too? ...

    Started by baldrick, 12-02-2009 04:17 AM
    • Replies: 10
    • Views: 2,487
    12-23-2009 10:33 AM Go to last post
  18. Help! I need a part number for a Crown PSA2 XH Variable Resister

    Hi, I have a PSA 2 XH that needs a "resister trim network". It's located at RN4 which translates to part # D4445-9. Does any know the value of it or an aftermarket part number for it? Thank you kindly in advance, Tom

    Started by 20hz, 12-04-2009 02:14 PM
    • Replies: 6
    • Views: 1,017
    12-07-2009 06:10 AM Go to last post
  19. witch amp for altec a7?

    Hi guys, I have buildmyself some altec a7's, but i don't now what amps are best for them. I want a ss amp not an tube amp. I don't think i really need a lot of power because i am going to use the speakers for home use only. Drivers are 416-8c, 511b with 908 and home made crossover type n-501....

    Started by kris, 11-20-2009 08:19 AM
    • Replies: 11
    • Views: 1,493
    12-03-2009 11:55 AM Go to last post
  20. Crown K2 vs Power Base III

    Hello, I was planning on purchasing a K2 sometime in the future to power 4 JBL subs (each channel of the amp would see a 4 ohm load). However, a friend is selling off his small PA and has offered me a Power Base III in very nice physical condition for $300. I'd appreciate anyone's...

    Started by svollmer, 11-29-2009 04:17 AM
    • Replies: 4
    • Views: 1,123
    12-01-2009 03:27 AM Go to last post
  21. Crown Vs. Crown..The China Syndrome !

    I decided as recent replies to posts in the music category "What's Playing Now" have sparked some off topic comments, which I do enjoy, I'd put forth the question here. I currently use two Crown XLS-202's, one model which features the former styling and the newer 202, where the designers...

    Started by jeenie67, 03-04-2009 01:58 AM
    • Replies: 21
    • Views: 3,549
    11-19-2009 09:19 PM Go to last post
  22. Altec W5-17 amp information needed

    Couldn't find any information on a Altec W5-17 amp on here. Also looking for information on the 1520T bridging amps. Any information would be appreciated. This may be a duplicate post....sorry.:blink:

    Started by 16hz lover, 10-29-2009 07:53 AM
    • Replies: 0
    • Views: 823
    10-29-2009 07:53 AM Go to last post
  23. Crown DC 300 Enters TECnology Hall Of Fame

    I thought this announcement on Crown's web site appropriate to post here on Crown's 60th Anniversary. Thanks Gerald! http://www.harman.com/images/logos/CrownInternational.gif http://www.crownaudio.com/gen_htm/press/pr157.htm

    Started by BMWCCA, 11-29-2007 03:53 PM
    • Replies: 53
    • Views: 9,992
    10-02-2009 09:05 PM Go to last post
  24. hartsfield owners : what amp ?

    HI all, I have made a lot of tests with different amplifiers for the last 4 years ( Hartsfield's with E145 / 2441 with original diaphragm, 2405 , original N500 filter circuit with paper oil caps) Differences are huge between every amp ! I actually use an AUDIONOTE P3 SE 300 b...

    Started by Bruno GINARD, 11-14-2008 02:03 PM
    • Replies: 15
    • Views: 3,479
    09-27-2009 02:08 AM Go to last post
  25. JBL 4410 Recommended Amp

    Hi everyone, This is my first time posting here. I have a pair of JBL 4410s. I was wondering what amp you would recommend for them? Whats tried and true etc... I have them for my home studio setup for recording and want to move on to an amp that suits the speakers. I figured you guys...

    Started by bekman, 09-14-2009 01:00 PM
    • Replies: 7
    • Views: 2,097
    09-15-2009 07:46 AM Go to last post

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