Recent content by pierrefrancois

Since i spent some time fixing an Acoustic 320 which was in a bad shape i can answer your question on a technical point of view. The power boost switch does 2 things on the amp module (not the pre amp) it increases the overall amp gain by something like 10% (i don't remember the precise value)...

Hello Acoustic users/owners. I'm not sure its the way to ask a question here (i've been invited to do so by "stereoplayer" after posting in "Amps & Cabs forum. I would like to know if Acoustic model 320 users get a nasty pop when "power boost" button is depressed (from "normal" mode to "power...

Hi Steely Mouse I was'nt talking about the big thump when amp is switched on (this issue has been dealt with) but a special feature called "power boost" which modify the sound spectrum and the gain I'm just realising that the title of my post is wrong or confusing ! it should be : "nasty pop...

Hello Jim. thanks for this account ; i'm a little confused since i don't see any "power boost" button on 370 or 450 ; maybe you were talking about the "bright switch" ?

Thanks Riis for your kind welcome

Thanks for your testimony and advice ; i've asked a moderator the permission to duplicate my question in the Acoustic Club

Thanks for this advice ; i didn' find any mean to move a post from a forum to another one ; should i simply duplicate my post in the "Amps & Cabs" forum ? I fully confirm the "head-scratcher" nature of this amp _

Hello everyone. After successfully fixing a lot of issues on every parts of an Acoustic 320 there's one left : without any input signal depressing the "boost switch" (from Normal to Boost) produced a loud nasty pop in the speaker. This switch grounds two inputs on the amp module : one on the...