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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 modification
items: Re: Marshall modification

Marshall modification
type: item
description: G'day Guys, firstly, if my question seems dumb, it's because I know NOTHING about electronics except that it hurts when you get electrocuted!! I am an aircraft maintenance technician and a jet engine specialist, but amplifier wizard - NO. I have a Marshall B150 Valvetstate Combo. The speaker has been replaced with a 600w Precision Device but the "head" is standard. Is there any way I can modify the innards of the amp to get more volume out of it? If there is such a mod, I would want the amp to remain safe and not want to "let the smoke out". I am living and working in Saudi Arabia so it's not that easy to just go and buy a second head. I can buy one online but it would cost me as much again in shipping to get it to me here. Thanks, any help is appreciated.
creator: WayneInSaudi
date: 2005-02-14T06:51:32-00:00

Re: Marshall modification
type: item
description: some of the mashall amps had to channels in the 60's and 70'a and so on . if you can bridge the to channels on the amp with a short patch cable this allowedyou to use both channels at once giving you the full power of the amp to work with mabe this would work for you
creator: bobby Metcalf
date: 2005-02-17T15:03:45-00:00

Re: Marshall modification
type: item
description: Well, I`m not familiar with this amp, but some general info that can be useful?!:-) We need more details - if I`m right, it`s the combo bass amp, SS output amp. We need impedance of the original speaker, and is this amp has additional speaker output? If the original speaker is 8 Ohms, and you can use this amp with additional 8-Ohms cabinet (4 Ohms total), then you can "gain" your output and dispersion of sound a little. But, if you can`t use another box in parallel with existing speaker (see manual!), then your only chance is to find "monster" bass-guitar speaker with larger sensitivity (W/m) then original:-). Another option (without selling this amp and buying something more powerfull) is using line-out, additional "slave" power amp + box(es). But, if you really need more volume, start looking for another amp + big box(es). Hope that helps a little...:-)
creator: Damir
date: 2005-02-17T18:57:27-00:00