jess28

Yes,Speakers disconnected. I was searching about checking dc offset for the 555 the consensus seemed to be to test with no load so I didn't get any resistors The reason I was concerened is I just bought the amp I always pop the top and look for any physical signs of distress And I found the left channel fuses wrapped in foil .

been checking out the service manual and it says to set the bias to +- 16 mv so its amost double on the l ch and more than double on the left i guess i should have it fixed i've been reading that as long as its under 50mv i wont damage speakers but may be losing some sound quality maybe thats why it doesnt sound a good as my other 555s

the gfa 555 usually goes for about 250 to 300 you can get the pre for under 200 i've bought a cout of the 555's and absolutly love them some ppl tell you they can be a bit bright but thats not my experience is it the mk 1 or mk ii that will make a difference in price

picked up a dmm to check the offset gettiing readings of r ch - 36.8 l ch - 26.3 it's a cheap dmm testing voltage setting 200m it shouldnt have a - ? my nad with the pre amp problem reads 0.00 both channels what am i if anything doing wrong thanks ahead of time i know I'm posting alot of question but alot of you guys have been such a big help and have tons of knowledge i dont posses yet

i'm sure there are alot of ppl who are electronics savy who find it alright to do something like that for a quick fix or what ever i am not one of those people. imo the fuses are there for a reson to protect my equipment. the seller got back to me and tried to pass it off on somebody else, saying he bought the amp used and never opened it up. i find it hard to believe that a guy who spent so much time building thoses beutiful 3 way speakers and has the knowledge of electronics he does would just hook up a used amp and hope for the best ! I almost always inspect any used gear before plugging it in .I did not do it right away this time and could have paid dearly for it thank god nothing happened taking it to my local repair shop on monday they give free estimates and can hopefully tell me if the amps ok to use

3 amp 125v

now if he did change the bias could that account for the fact that this particular amp seems to run very cool compared to the other gfa 55s i've owned through out the years dont know a whole lot about the subject also he was using this amp to power the woofers on on a pair of tri-amped homade horned 3way speakers very nice looking wich would leave me to believe he has a pretty decent knowledge of electronics i would not be surprised if he messed with the amp

thanks so much alreay got the fuses. the caps look fine visually at least none are buldging or leaky was planning on replacing anyway gunna run back to radioshack and hopefully get this figured out i messaged the guy very politly aked him why he did this,still hasnt gotten back to me i can telll he only did it recently the foil wasnt old, but thats a hell of a thing to do to somebody thank god i looked been running it for about a week now

hey guys,I decieded to check out the inside of a recently purchased gfa 555 when much to my surprise i found two internal fuses wrapped in f'ing foil I know this isnt good I actually remeber macguyver doing the samething back in the day. nothing looks damaged to the eye. I can only assume he did it for one of two reasons it was constantly blowing fuses or he noticed it wasnt working before i picked it up and just did it so worked when i picked it up. if i replace these with the correct fuses will it be safe to at least try to hook my speakers up?

all speaker cable wires and what not are hooked up i've done everything i can think of with connections i want to get this thing going

yeah everyone i have talked to thinks its weired too. i've been online trying to figure out the fctory reset no such luck,will try holding down the power button already opened it found the preamp section no luck finding any fuses i would love to get this thing working cant find any schematics to let me know where i could find the fuse

next friday im bringing my rf 7ii to my local audio shop going to do a/b comparison with the b&w 802d on a 12,000 dollar mcintosh rig cant wait i

hi i have a nad 7600 right channel isnt working,i figured a relay problem so disconected the jumpers and decided to try just the preamp section same problem. this thing sounds amazing with my adcom 555 blows my dads onkyo 705 im currently using out of the water even with just the one channel anbody have any ideas on what it cdould be and if it could be fixed at home. i've been through the manual got it balanced have all the right buttons pushed i also have a chance to get a adcom gtp 450 for 90 bucks which i really dont want to spend if i dont have to as i have no experience with that pre

ok came home from work and nobody was home so i started messing around with speaker placement and i did a factory reset on the onkyo. after moving and listening ,and some more moving and listening and so and so on i was getting really frustrarated and more convinced these speakers were not was i was hoping for. then i heard the soundstage start open up started getting excited after a little more experamentation with placement boom there it was i was streaming flac frank turner(great folk punk rock guy from england) "i still believe" my god it was fricken amazing the .swear to god it sounded like someone was in my living room strumming an acoustic guitar. it's still not exactly where i want but getting pretty damn close makes want to hear the originals now i really cant wait to hear them on that mcintosh set up! i realy cant believe how much of a difference moving them apart from each other made,they were allready 7-8 ft apart now may 10- 12 thanks for all the replies

i will be bringing them down there either monday or fri of next week hopefully they sound the way i was expecting with that combo if it's just the electronics i can live with it,knowing i will be able to eventually get the sound im looking for. if not i can always return or sell them and either get my old 63's or since i plan on mostly doing 2 ch may go some cornwalls or a older pair of khorns or lascalas. either way im sticking with klipsch