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Adcom GFA 545 II mods | diyAudio
https://www.diyaudio.com/community/threads/adcom-gfa-545-ii-mods.286065/
Mods on Adcom in general. Adcom already uses upgraded parts in their products, so there aren't any component swapping avenues unless you know precisely what you are doing and have the test equipment that can prove the amplifier still operates normally and within spec. "Upgrades" are responsible for more dead amplifiers and speakers than you can ...
Atc Scm20psl WITH Adcom gfa-545 Amp Modded By Jim …
https://reverb.com/item/41150113-atc-scm20psl-with-adcom-gfa-545-amp-modded-by-jim-williams
Adcom GFA-545 Amp is in perfect working order inside and modified by Jim Williams at audioupgrades.com just before I got the ATC's in Oct of 2020. Stock Adcom 545's are 250-400, plus the mod is 250+S&H to and from audio upgrades. I'll …
Adcom GFA-545 - High-End Audio Discussion Forum | Audiogon ...
https://forum.audiogon.com/discussions/adcom-gfa-545-modify-or-move-on
I’m currently using two vertically bi-amped Adcom GFA-545 amplifiers. I feel they have enough power and I’m able to achieve very good imaging with the Paradigm Studio 100 speakers. Although I don’t find the Adcoms especially bad in any one area I feel there is definitely room for improvement, more liquid mids and softer highs would be great.
A custom GFA-545 II with an insane power supply | Hoppe's ...
https://hoppesbrain.com/2016/03/18/a-custom-gfa-545-ii-with-an-insane-power-supply/
A stock GFA-545 II usually gives about 130W into 8 ohms. This mod bumps that to about 160W. So, we are not pushing the output section too hard, though we have given away some SOA headroom. But it’s got three pairs of output transistors, which is pretty typical for an amp at this power level. This upgrade is not without risk.
Replacing Capacitors - Adcom GFA-545 — Polk Audio Forum
https://forum.polkaudio.com/discussion/157768/replacing-capacitors-adcom-gfa-545
Replacing Capacitors - Adcom GFA-545. PreCd Posts: 786. January 2014 edited January 2014. in DIY, Mods & Tweaks. I have been running a GF-545 for a few months now and decided to replace the capacitors on the PCB. There are two there, a 4.7uf and a 47uf cap. The 4.7 is in the bias circuit so I thought what the the heck, lets do it.
Adcom - Musical Design
http://musicaldesign.com/MC_AdcomAmp_mods.html
Premium grade Audio specific electrolytic capacitors - more transparency, quickness, clarity. Premium power HyperFred rectifier - smooth, transparent, rich majestic sound stage and dynamics. Select bypass capacitors - dynamic, silky, open stage. LX Elite Mod $599 installed for all early model Adcom stereo amps, other items listed below.
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