AudioRoundTable.com - RDF feed
type: channel
description: Audio advice and discussions with audiophiles and professionals. Free discussion forums, open to all and frequented by industry experts. Ask questions and get advice on stereos, speakers, hi-end amplifiers, pre-amps, home theater, tube hi-fi, turntables, vinyl, tweaks, music, films, video, DVDs and more.
items: marshall bass state 150 problems
items: Re: marshall bass state 150 problems

marshall bass state 150 problems
type: item
description: looking for help with a second hand amp i bought which seemed to be o.k. until i gigged with it. the fault is exhibited as this :- volume starts to fade out after about 20 mins of playing. have used a pre amp plugged into the effect return to discount possible preamp problem. Ran amp out of its case with no input but all controls on full (speaker connected)to check for over heating, mosfet heat sinks stayed cold,all high wattage resistors apart from 2 became quite hot (other 2 were cold?) any assistance or ideas would be greatly appreciated.
creator: rumblekat
date: 2006-04-27T20:36:41-00:00

Re: marshall bass state 150 problems
type: item
description: re the above: i have just spoken to the nice marshall people and they have sent me the curcuit diagrams to help. any other help would still be appreciated - i have no problem working thru the preamp but not so hot with power amp.
creator: rumblekat
date: 2006-04-29T08:07:30-00:00

Re: marshall bass state 150 problems
type: item
description: Hi I have this problem with Marshall amps in general.If the sound is just dropping in volume and not distorting it is the return socket on the loop.Just change both send and return sockets and it should do the trick.
creator: B.H.Booth
date: 2008-09-14T23:47:19-00:00