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Marshall modification [message #26989]

Mon, 14 February 2005 00:51

WayneInSaudi
Messages: 1
Registered: May 2009

Esquire

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.

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Re: Marshall modification [message #26991 is a reply to message #26989]

Thu, 17 February 2005 09:03

bobby Metcalf
Messages: 1
Registered: May 2009

Esquire

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

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Re: Marshall modification [message #26992 is a reply to message #26989]

Thu, 17 February 2005 12:57

Damir
Messages: 1005
Registered: May 2009

Illuminati (2nd Degree)

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...:-)

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