I want to rework the jbl 4408as because i think they are a little tinny on the top end, but from what ive read from jim is that its not the tweeters but crossover components. User manuals, guides and specifications for your adcom gfa 5800 amplifier. View and download adcom gfa5800 service manual online. Adcom 8551 east anderson drive, suite 105 scottsdale, arizona 85255 480 6072277 voice 480 3489876 fax. Below you will found our manuals on the adcom gfa5800. A computer model mimics the reactance of the very difficult speaker and duplicates the actual phase angles of the voltage and current throughout the entire audio range. Adcom gfa 5800 250 watt nelson pass designed amplifier. Download the adcom gfa5800 manuals for free hifi manuals. Adcoms first electronic product, the groundbreaking gfa1 power amplifier, appeared in december 1979.
Posted on june 12, 2015 july 25, 2015 by hoppesbrain. Adcom gfa5800 opinions as a recent owner of the adcom gfa 5800 ive developed some strong opinions of the sound. I currently use a gfa555 with a pair of jbl 4408as and its loud and clear. Its predecessor, the gfa5800 is also highly regarded. The output stages of the gfa2 use highspeed bipolar transistors, and entirely separate power supplies for the two channels enable each channel to deliver its maximum power regardless of the status of the other. View and download adcom gfa 5800 owners manual online. Service manuals, schematics, eproms for electrical technicians. I have used an adcom gfa545 and gfa555 and both are great amplifiers. View and download adcom gfa5800 owners manual online.
Feb 07, 2015 adcom gfa 5800 250 watt nelson pass design amplifier for sale. The srmt1 has two professional 580 v and a third standard 230 v output, so any stax earspeaker ever made since 1959, from the original sr1. Thats why adcom s gfa 6000 5 channel power amplifier was specially designed for the home theater customer who needs a compact yet powerful source for five speaker surround sound. The adcom gfa545 ii is a highvoltage amplifier and bias source for stax electrostatic headphones. View online or download adcom gfa5800 owners manual. This was adcoms biggest and most expensive amplifier. This website is not affiliated with or sponsored by adcom. Adcom gfa5800 opinions as a recent owner of the adcom gfa5800 ive developed some strong opinions of the sound. Posted on october 6, 2015 january 26, 2016 by hoppesbrain just some thoughts and pictures from this adcom gfa5802 ive just restored for jeff in washington. Adcom gfa5802 manual stereo power amplifier hifi engine. Onoff switch does not work, apparently not unusual with s. Adcom high performance audio amplifiers, preamplifiers and.
Adcom gfa555 mk2 original service manual pdf format suitable for windows xp, vista, 7 download. My editor felt it was time to survey a handful of what might be called entrylevel highend amplifiers. Adcom manuals, schematics and brochures hifi manuals. Adcom gfa 5800 250 watt nelson pass design amplifier for sale.
Adcom gfa5800 amplifiers description a250 watts continuous average power into 8 ohms at any frequency between 20 hz and 20khz with both channels driven at less than 0. Gfa565se is an extremely powerful amplifier, offering 250w of pure power with high current drive capability, with both balanced and unbalanced power stage. For 300 bucks, you got a true dualmono amplifier designed by nelson pass. It turns off for a second but goes through cycles of on and off every couple of seconds. Bass all over the place as stereophiles sam tellig was so fond of saying. I will cop to being an adcom fan, and think they compare very favorably with brystons. And that tariff will pay for all manner of worthwhile britishmade.
Use hifi shark to monitor pricing and global availability. The adcom blows all of these amps away including the krell which is a. Nov 20, 2010 adcom gfa 5800 250 wpc solid state amplifier. Download countless of free service manuals you find nowhere else.
Each, in its way, can serve as a vital link in a system which, with carefully. Adcom gfa5503 amplifier overview and full product specs on cnet. Has anybody heard the gfa 5500 and would they say its similar to the 5800. Unpacking before your gfa 585se left our plant, it was carefully inspected for physical imperfections and tested for all electrical performance parameters as a routine part of adcom s systematic quality control. I am the original owner of this amplifier which has been a work horse for me for many years. Power amplifier 10 pages amplifier adcom gfa 585 owners manual. I have an adcom gfa5200 stereo amplifier that is not working right now. The super high current adcom gfa535 ii hoppes brain.
The adcom gfa5800 is a stereo power amplifier for your passive monitors. In general, and this is purely for the two channel adcoms, they have always made a point of having excellent current capacity, a forgiving nature for some difficult impedances, and really well considered transformers. I have used an adcom gfa 545 and gfa 555 and both are great amplifiers. Adcom gfa 5800 amplifier nelson pass design audioholics.
Limited edition high current power amplifier 12 pages amplifier adcom gfa 585 service manual. Detail is excellent without being bright like some competitors. The owners manual is used as an reference guide, instruction manual and instruction book. One could hardly call these amps sleek, because they are very big. The gfa5800 has most of the detail and sweetness of highend tube amplifiers, and the. To purchase gfa5800 spares or accessories, please contact the company via their website or visit an authorised retailer. The adcom gfp1, like its companion power amplifier the gfa1, is compact and unobtrusive. Adcom had a sensational success with the gfa535 in the 80s and 90s. The manual was created in pdf format with the filename of gfa5800manual. Database contains 2 adcom gfa 5800 manuals available for free online viewing or downloading in pdf. The adcom produces a very deep and wide soundstage. It turns off for a second but goes through cycles of on and off every couple of.
These are all acoustic suspension speakers that take a lot of power to drive. View and download adcom gfa 5802 service manual online. To open downloaded files you need acrobat reader or similar pdf reader program. The face plate is embossed with horizontal lines the panel is actually extruded. The amp seems to do a great job of powering these monitors, and the owner of the studio mentioned that its the best amplifier he has heard from the monitors, which is something that can. To purchase gfa 5800 spares or accessories, please. The manual was written in by adcom and applied to gfa5800.
I noticed a difference in the bass, which seemed deeper and more solidstrange because adcoms reputation has always been of strong solid bass. The service manual functions as a repair guide for troubleshooting and sometimes contains tips for refurbishing and modifications. Adcom gfa 5300 power amp, i have been a audio fanatic for longer then i want to remember, all as i can stay,any body staying that the adcom gfa 5300 power amp doesn,t sound good, has a piss pure sounding preamp hooked up to it, to make a long story short, as i found out with the one i have,i had a nikko betta 30 preamp hooked up to it at first,the low end was like it wasn,t there, then i got. View and download adcom gfa 2535l owners manual online.
The amp has a very high dampening factor, is a high current design and uses 3 gain stages as opposed to 5 like many. The gfa565se is quite possibly the perfect example of adcoms goal to effortlessly reproduce music with exquisite detail. The adcom gfa1 is a power amplifier in the solid state amplifier category. A 300wpc monster, with 16 hexfet output devices per channel. New audiocontrol new x series preamps and avrs now available the companys new 16channel. Its predecessor, the gfa 5800 is also highly regarded. It is my main power amp driving 4 klh fives, 2 large advents and 2 custom kenw ood 440s.
Used adcom gfa5800 stereo power amplifiers for sale hifishark. At its modest price, this is one of the better preamplifier values on todays market. Each, in its way, can serve as a vital link in a system which, with. The adcom gfa 545 ii is a highvoltage amplifier and bias source for stax electrostatic headphones. Adcom gfa5300 power amp, i have been a audio fanatic for longer then i want to remember, all as i can stay,any body staying that the adcom gfa5300 power amp doesn,t sound good, has a piss pure sounding preamp hooked up to it, to make a long story short, as i found out with the one i have,i had a nikko betta 30 preamp hooked up to it at first,the low end was like it wasn,t. Adcom gfa2535 amplifier service manual download, schematics. Looking sort of like a black ice cube on steroids, it combined several interesting technologies. Jun 12, 2015 the super high current adcom gfa 535 ii. The adcom gfa 5500 is likely the best value in the market. The adcom gfp1, like its companion power amplifier the gfa 1, is compact and unobtrusive.
Adcomparts a source of original electronic and mechanical parts and components for adcom denon marantz onkyo receivers, amplifiers, cd players. The adcom gfa 5800 is a stereo power amplifier for your passive monitors. Thats why adcoms gfa6000 5 channel power amplifier was specially designed for the home theater customer who needs a compact yet powerful source for five speaker surround sound. Mar 08, 2006 i have an adcom gfa 5200 stereo amplifier that is not working right now. The only downside is the heat generated as they are biased ab1. Ive had mine over ten years and pushed it hard on cds and dvd concerts without any problems. I am third owner so no original box though i do have user manual.
The aragon added more depth to the presentation and emphasized the high frequencies compared to the gfa7700. Adcom high performance audio amplifiers, preamplifiers. Adcoms gfp 555 ii preamp and gfa 545 ii power amp cost 499 each, for a combined price just 2 below the fourfigure mark. The srmt1 has two professional 580 v and a third standard 230 v output, so any stax earspeaker ever made since 1959, from the original sr1 to todays sr009, works perfectly. Adcom gfa 5800 opinions as a recent owner of the adcom gfa 5800 ive developed some strong opinions of the sound. Below you will found our manuals on the adcom gfa 5800.
Creating the big, roomfilling sound of a true home theater system doesnt mean you need an oversized amplifier. Sep 15, 2011 testing the adcom gfa 5800 mbung lapanpuluhan. The biggest collection of adcom manuals and schematics. View and download adcom gfa 5800 service manual online. I dont own this but ive used it at a studio with a set of tannoy 8s i believe. It is a silent partner in a visual sense as well as sonically, doing its job without unnecessary frills or gimmicks.
Oct 06, 2015 some notes about restoring a gfa5802 posted on october 6, 2015 january 26, 2016 by hoppesbrain just some thoughts and pictures from this adcom gfa5802 ive just restored for jeff in washington. A250 watts continuous average power into 8 ohms at any frequency between 20 hz and 20khz with both. The gfa 5800 has most of the detail and sweetness of highend tube amplifiers, and the. Adcom gfa5800 2 channel power amplifier for sale online ebay. I currently use a gfa 555 with a pair of jbl 4408as and its loud and clear. Much of its design was conceived by nelson pass, founder of threshold corp. In order to determine the performance of the gfa585se, adcom developed a computer model of a difficult loudspeaker load. Save adcom gfa 5500 to get email alerts and updates on your ebay feed.
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