gfa-585 on it's way out

Me Myself & I
Me Myself & I Posts: 12
edited June 2009 in 2 Channel Audio
I have out 3 watt's clean out put p/ch then distortion plus speaker inverstion I drive two black widow 18's of it. I am looking for some thought's.
Post edited by Me Myself & I on
· Share on FacebookShare on Twitter
«1

Comments

  • F1nut
    F1nut Posts: 50,841
    edited June 2009
    I have no idea what you are asking.
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

    · Share on FacebookShare on Twitter
  • messiah
    messiah Posts: 1,790
    edited June 2009
    Soumds like a bad unit. I'll give you 50 bucks for it if you want to ease your pain.
    "They who can give up essential liberty to obtain a little temporary safety, deserve neither liberty nor safety."
    Benjamin Franklin, February 17th, 1775.

    "The day that I have to give up my constitutional rights AND let some dude rub my junk...well, let's just say that it's gonna be a real bad day for the dude trying to rub my junk!!"
    messiah, November 23rd, 2010
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    off a bull maybe I think it is a easy fix
    · Share on FacebookShare on Twitter
  • kawizx9r
    kawizx9r Posts: 5,150
    edited June 2009
    How olds the unit, where/when did you acquire it?
    Truck setup
    Alpine 9856
    Phoenix Gold RSD65CS

    For Sale
    Polk SR6500
    Polk SR5250
    Polk SR104


    heiney9 wrote: »
    Any clue how to use the internet? Found it in about 10 sec.
    · Share on FacebookShare on Twitter
  • comfortablycurt
    comfortablycurt Posts: 6,745
    edited June 2009
    What?...we'd love to help...if you could possibly rephrase the question a little more clearly...

    It's not exactly clear what you're asking here.
    The nirvana inducer-
    APC H10 Power Conditioner
    Marantz UD5005 universal player
    Parasound Halo P5 preamp
    Parasound HCA-1200II power amp
    PolkAudio LSi9's/PolkAudio SDA 2A's/PolkAudio Monitor 7A's
    Audioquest Speaker Cables and IC's
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    I DO WISH FOR HELP Me Myself & I;1101214]I have out put of 3 to 35 watt's clean out put p/ch then distortion plus speaker inverstion I drive two black widow 18's of it. I am looking for some thought's i do not feel that the out put trasistors are blown the vol is equil the fuses are good caps are clean no fliuds, it runs less then warm as always BUT I did get a AC SOUND ON THE RIGHT CH when the power was turned on but only after the caps were discharges
    · Share on FacebookShare on Twitter
  • kawizx9r
    kawizx9r Posts: 5,150
    edited June 2009
    I'd try going through adcom support, just my .02 Saw the specs on it (and the normal output at 8ohms is NOWHERE near 3-35 watts).
    Truck setup
    Alpine 9856
    Phoenix Gold RSD65CS

    For Sale
    Polk SR6500
    Polk SR5250
    Polk SR104


    heiney9 wrote: »
    Any clue how to use the internet? Found it in about 10 sec.
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    this is Y it is on its way out I drive two 18 inch subs of of it plus I run a ap-2020 running two marrathon 18 inch sub this is just my bottom end I can not wheald any more the 35 per chan out of my 585
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    i do know my specs and i love feeling what this amp gave to us but it is crapping out like it runs a class then craps out when it goes to b class . and i thought that that did not happen till about 55 watts
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    1987 is what is printed on the boards bought it at SOUND HOUNDS victoria bc CANADA Unit # 2566 out of 3000
    · Share on FacebookShare on Twitter
  • F1nut
    F1nut Posts: 50,841
    edited June 2009
    the black widows kilded it 2 much inverstion
    Political Correctness'.........defined

    "A doctrine fostered by a delusional, illogical minority and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a t-u-r-d by the clean end."

    President of Club Polk

    · Share on FacebookShare on Twitter
  • nguyendot
    nguyendot Posts: 3,594
    edited June 2009
    +1 on calling Adcom support. They are far more versed in the technical aspects of this unit that we are.
    Main Surround -
    Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub

    Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250

    Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD
    · Share on FacebookShare on Twitter
  • Face
    Face Posts: 14,340
    edited June 2009
    Proper English and disabling the caps lock key would make your posts much more coherent. Then maybe we could help you better.
    "He who fights with monsters should look to it that he himself does not become a monster. And when you gaze long into an abyss the abyss also gazes into you." Friedrich Nietzsche
    · Share on FacebookShare on Twitter
  • Polkie2009
    Polkie2009 Posts: 3,834
    edited June 2009
    Are they the Peavey Black Widows???
    · Share on FacebookShare on Twitter
  • heiney9
    heiney9 Posts: 25,221
    edited June 2009
    Check for leaking caps on the input board. Adcom had a bad run of caps that prematurely leak and causing high dc offset as well as the problems you are trying to describe.

    It's a PITA to clean the eletrolytic off the boards, very tedious and needs a meticulous person to spend some time and do it correctly. There are several posts here on the subject and over at diyaudio.com

    Get your learn on and try to type in proper English.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
    · Share on FacebookShare on Twitter
  • heiney9
    heiney9 Posts: 25,221
    edited June 2009
    All the parts need to be removed form the input board and put in a solution of Simple Green mixture and put in an ultra sonic cleaner. Rinse and repeat 3-4 times. Then all the parts need to be re-populated and then using a Variac or the light bulb method slowly bring it back up and then start taking measurements to be sure the board is in fact completely free of electrolytic solution. Even a trace of electrolytic soution can cause high DC offset. If not you'll need to start over again.

    New boards are no longer available so your only options are to clean them your self, have a very competent tech clean them or sell the amp on ebay as a parts amp.

    H9
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
    · Share on FacebookShare on Twitter
  • reeltrouble1
    reeltrouble1 Posts: 9,312
    edited June 2009
    I sense the bottom is very near.

    RT1
    · Share on FacebookShare on Twitter
  • organ
    organ Posts: 4,969
    edited June 2009
    Don't forget that if you decide to open the unit up for cleaning or to change caps that you know the electrical safety rules. If you don't have experience with working on electronic parts, I'd suggest you bring it into a repair centre. The amp can hold a lethal charge even when unplugged.
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    yes they are. i am wishing to fix my gfa-585 myself rather then take it too a shop.
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    all though i have not measured the caps ther is no sign of leakage.
    · Share on FacebookShare on Twitter
  • heiney9
    heiney9 Posts: 25,221
    edited June 2009
    Me Myself & I wrote: »
    yes they are. i am wishing to fix my gfa-585 myself rather then take it too a shop.

    The 585 is a bit of a complicated design. If you don't have working knowledge or a service manual I'd leave it alone.

    There are several in depth discussion threads over at diyaudio.com

    One started by our very own Ben.

    I highly suggest you read those before attempting to fix the 585. If you don;t know what you're doing you'll certainly make it worse.
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
    · Share on FacebookShare on Twitter
  • Systems
    Systems Posts: 14,873
    edited June 2009
    Me Myself & I wrote: »
    I have out 3 watt's clean out put p/ch then distortion plus speaker inverstion I drive two black widow 18's of it. I am looking for some thought's.
    Are you saying the output is now phase inverted?If so thats not really possible without modifications to the input stage.
    Testing
    Testing
    Testing
    · Share on FacebookShare on Twitter
  • Monster Jam
    Monster Jam Posts: 919
    edited June 2009
    Waat is on thread here being sed I cant help me under stand.
    Do you hear that buzzing noise? :confused:
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    sorry but no it will crap out after say 30 p/ch like the main caps are out of power when i try to push for more then the 30 the speakers will fluter with high distortion but at very low volume on sound till i turn it down. i do know what this amp is able to do and i was only using a 8 ohm load per /ch 2 18" blackwidows 4" voice
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    no smell no heat no thermal led
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    it still runs at very low levels
    · Share on FacebookShare on Twitter
  • Me Myself & I
    Me Myself & I Posts: 12
    edited June 2009
    last year i was running 4 18" sub's off of this gfa-585, we had over a hundred guest's good size hall & it was for a wedding. this year i added a yorkville pa-2020 for more grunt & i have a wedding on the 18 th of july so i am looking for even more thoughts and i will look or the caps of the two input stages as it must be as this amp has two mono blocks two power suplys one transformer and one rely all the fuses are good both ch bag out
    · Share on FacebookShare on Twitter
  • fbm211
    fbm211 Posts: 1,488
    edited June 2009
    What??
    SDA-2BTL with custom IC
    Adcom 565 monoblocks--Monarchy Audio M-10 preamp
    Theta Data Basic Transport--Stello DA100 Signature DAC--Camelot Dragon Pro2 MK III
    Harman Kardon T-55c TT
    DH Labs Q-10 Signature Speaker Cables With Furez silver plated copper bananas
    Revelation Audio Labs Prophecy Cryo-Silver Reference AES/EBU
    Revelation Audio Labs Prophecy Cryo-Silver i2s digital cable
    4 Furutech FP-314Ag with FI-11cu Plugs/FI-11AG IECs--- Power Cords
    DH LABS REVELATIONS ICs-amps
    Revelation Audio Labs Paradise cryo-silver ICs-Source to pre
    · Share on FacebookShare on Twitter
  • nguyendot
    nguyendot Posts: 3,594
    edited June 2009
    It seems very difficult to make out what you are trying to say. Can you please put this in normal speaking terms without the slang so more of this community may assist you?
    Main Surround -
    Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub

    Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250

    Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD
    · Share on FacebookShare on Twitter
  • kawizx9r
    kawizx9r Posts: 5,150
    edited June 2009
    +2 in regards to speaking properly

    Better yet, as I stayed earlier go through adcom.
    Truck setup
    Alpine 9856
    Phoenix Gold RSD65CS

    For Sale
    Polk SR6500
    Polk SR5250
    Polk SR104


    heiney9 wrote: »
    Any clue how to use the internet? Found it in about 10 sec.
    · Share on FacebookShare on Twitter