ceilidhswinger

Welcome Derek, This is a great wee site and a handy resource, have fun! Calum (Havana Swing Gypsy Jazz Band)

Hey John, welcome to basschat

Thanks again Mark, I have copied this and I will let tech boy have a gander, re TE, I think you are right about pots, I seem to remember other tech guy I used waxing lyrical about linear or logarithmic and he said as long as value was the same, it would be okay. I will ask the guy that lookin at my GK about this too! This would certainly explain things. Again thanks for taking the time.

Hi again Mark, Sorry to sound vague but I'm sure its the MB150S? bought amp from guy down in London a few months back, done a handful of gigs with it and its stil with tech guy, he has manual. I know theres a MB150 AND MB150S mines unless I'm mistaken is S. I will pass on your info?advice to my guy and thanks for all your help. will keep you posted Calum

Thanks for that MoonBassAlpha, mmm! that's interesting, these amp were reckoned to be the dogs bollocks when they came out too. I will let my man know, been on a few forums and seemingly problems with limiters and other stuff I know nothing about frankly. But thanks again for taking the time to get back me.

Eventually found wiring diagram for GK Krueger MB150s , GK not much help unless you had bought it and registered it with them, mine was bought second hand. Downloaded diagram from DIY Audio so if anybody out there wants a wiring diagram for said amp, give me a shout.

Thanks again Delberthot, will get on it! Cheers

Hi Delberthot, just got phone from my tech guy see below, at least its pleasing to know I'm not going deaf eh? Hi folks, does anybody out there own a Gallien Krueger mb150s? mine is playing up at the moment with severe loss of volume, my tech guy looked and put a load thru it but as soon as he connected speaker reading went nuts, he read on a few forums that the limiter can sometimes play up on them and start cutting volume. So if anybody out there can send me wiring diagram or steer me in the right direction, I would appreciate it.

Hi folks, does anybody out there own a Gallien Krueger mb150s? mine is playing up at the moment with severe loss of volume, my tech guy looked and put a load thru it but as soon as he connected speaker reading went nuts, he read on a few forums that the limiter can sometimes play up on them and start cutting volume. So if anybody out there can send me wiring diagram or steer me in the right direction, I would appreciate it.

Going through a bad time with gear at the moment, had my Trace Elliot GP 12 smx in in for repair recently as Output pot was noisy, tech guy replaced pot with another 50 k pot, not Trace, the same week my input gain pot was dodgy and cutting volume , my tech guy checked it out and said it was okay but that I now needed to replace input blend pot which he did but still feel I am having to drive amp more than normal to achieve my normal volume. Also my GK/ SB150S that I use for DB has lost power! couldn't get any volume unless I had it cranked right up! I use different leads for both set ups so not leads. both amps sound okay but not totally different volume and EQ to what I normally have them set at. am I going deaf or daft or both. In both cases I have a simple EQ tweak and away we go but now continually turning and and twiddling?? help!

Sold to a very nice man!