marshall mg15cd guitar amp

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marshall mg15cd guitar amp

Postby ballfire » 10 Dec 2018, 05:43

good day everybody..


anybody knows here the "dc" output power rating of the power transformer of marshall mg15cd guitar amp series? or what the voltage on primary and secondary..??
im searching for building an amp..
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Re: marshall mg15cd guitar amp

Postby Cub » 10 Dec 2018, 08:22

Primary: Blue 0V - Brown 230V
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Re: marshall mg15cd guitar amp

Postby ballfire » 10 Dec 2018, 08:27

Cub wrote:Primary: Blue 0V - Brown 230V
Secondary: Red 16V - Black 0 - Red 16V



thanks cub i appreciate it.. :D
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Re: marshall mg15cd guitar amp

Postby Cub » 10 Dec 2018, 10:07

Any time, ball! :thumbsup

If I may ask, what are your plans to make with such a transformer?
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Re: marshall mg15cd guitar amp

Postby ballfire » 19 Dec 2018, 05:42

Cub wrote:Any time, ball! :thumbsup

If I may ask, what are your plans to make with such a transformer?



im just maybe or planning build the marshall mg15cd or any other option
because my 30 watts guitar amp until now i cant fix it..i tried all the debugging..because it lost the fatiness on the output its sounds like tingy or twangy output everytime i play my rig through it its now crappy sounding not just like before its sound really meaty and it has this fatiness output now its gone..

my amp is a chinese build amp but even its chinese it sound nice for me..

do you know any diy guitar amp that all IC based circuitry that makea a 30watts on output??
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Re: marshall mg15cd guitar amp

Postby ballfire » 20 Dec 2018, 05:20

good day...


can i use a 18volts 6 ampere power transformer on this build project amp??

any advice please?
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Re: marshall mg15cd guitar amp

Postby Cub » 20 Dec 2018, 08:20

Sorry, mate! I don't know enough about solid state amps to be of any help here. But before you start ordering all the parts, perhaps it would be wise to compile a list of the costs first. There are plenty of secondhand MG amps on the market and building a clone of one might be a lot more expensive than buying a used original.

Have you thought about bringing your broken 30 Watt amp to a tech who fixes amps for a living?

If you want to have a brilliant solid state amp and want to have fun with DIY, you might want to check this thread. Our forum brother microbailey turned a Peavey Bandit into an absolute beast.
http://freestompboxes.org/viewtopic.php?f=2&t=28876
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Re: marshall mg15cd guitar amp

Postby ballfire » 21 Dec 2018, 05:26

Cub wrote:Sorry, mate! I don't know enough about solid state amps to be of any help here. But before you start ordering all the parts, perhaps it would be wise to compile a list of the costs first. There are plenty of secondhand MG amps on the market and building a clone of one might be a lot more expensive than buying a used original.

Have you thought about bringing your broken 30 Watt amp to a tech who fixes amps for a living?

If you want to have a brilliant solid state amp and want to have fun with DIY, you might want to check this thread. Our forum brother microbailey turned a Peavey Bandit into an absolute beast.
http://freestompboxes.org/viewtopic.php?f=2&t=28876



i started it months ago..i modified my amp diode bridge section into different one..im so amazed with the marshall amps so i copied the diode bridge section from marshall mg30 30 watts and it function well into my amp..but the tingy output sounding problem still persist into my amp..i need to plan this big if i will modified it all of it inside..


anyway thanks cub for the advice..
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Re: marshall mg15cd guitar amp

Postby bmxguitarsbmx » 21 Dec 2018, 08:37

You can fix it man! Electronic repair is an art, so go check out a book for some good ideas on troubleshooting strategy.

My guess is the tinny sound is from a section you modified. A signal generator and an Oscilloscope are invaluable when troubleshooting.

I don't want to bum you out, but cloning a mg15cd is an asinine idea.
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Re: marshall mg15cd guitar amp

Postby ballfire » 22 Dec 2018, 03:12

bmxguitarsbmx wrote:You can fix it man! Electronic repair is an art, so go check out a book for some good ideas on troubleshooting strategy.

My guess is the tinny sound is from a section you modified. A signal generator and an Oscilloscope are invaluable when troubleshooting.

I don't want to bum you out, but cloning a mg15cd is an asinine idea.



thanks for the reply..im starting last night trouble shooting it every section on it the power amp section..everything.. im running some test repeatedly in order to find the main problem of my amp..im not gonna stop until ill find the problem..

what cloning mg15 is a bad idea?? i think marshall amplifiers is good...
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Re: marshall mg15cd guitar amp

Postby phatt » 22 Dec 2018, 07:40

Try posting a link to the Amp schematic you are trying to fix. (I assume some kind of 30 Watt amp)
Then explain the problem you have.
That will help us to help you. :thumbsup

BMX was just stating the obvious,, It will cost you just as much (and likely more) to build from scratch as to go and buy one.
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Re: marshall mg15cd guitar amp

Postby thetragichero » 25 Dec 2018, 14:24

fx loop? that can help you narrow down where the problem may, lie preamp or power amp
I've got an mg100 head that's traveled through a group of friends that I'm keeping the channel switching and power amp but placing two of the baja-type preamp circuits in instead. for me it's just a fun project, though, as this wasn't even close to am amp I regularly used

maybe no help to you, but there are some of us fiddlin with solid state amps
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Re: marshall mg15cd guitar amp

Postby ballfire » 27 Dec 2018, 07:51

Cub wrote:Primary: Blue 0V - Brown 230V
Secondary: Red 16V - Black 0 - Red 16V



good day..

can I use a 18 dc volts and 6 amperes or 24 dcvolts 2 amperes? which one is the correct??transformer I don't have a 16 volts..
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