Marshmallow's build thread

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Marshmallow
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Re: Marshmallow's build thread

Post by Marshmallow »

NZTone.e wrote: Tue Jul 09, 2024 8:52 pm
Marshmallow wrote: Tue Jul 09, 2024 7:34 pm Two more weeks til the rest of the parts arrive. Have populated 80% of it. In the mean time I'll work on the other stuff.

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So are you making a 100w version of your two rock Dumble circuit?
Nah this one's the 40w on a 350mm chassis. I'll be making the 100w steel string singer #002, the one that John mayer uses. I'll make a start once I get the chassis end of this month.
Last edited by Marshmallow on Tue Jul 09, 2024 10:43 pm, edited 1 time in total.

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Re: Marshmallow's build thread

Post by Marshmallow »

Had a bit of time again today and I made a bit of progress with the mini 40W amp. The power section is all wired up. I'm planning to mount the preamp to the chassis tomorrow. Once mounted, I'll wire as much as I can on the preamp. Have a feeling this is going to be pretty packed.

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Re: Marshmallow's build thread

Post by Cdog »

Marshmallow wrote: Tue Jul 09, 2024 10:41 pm Have a feeling this is going to be pretty packed.
I have that same feeling! :)

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Re: Marshmallow's build thread

Post by Marshmallow »

Cdog wrote: Wed Jul 10, 2024 9:35 am
Marshmallow wrote: Tue Jul 09, 2024 10:41 pm Have a feeling this is going to be pretty packed.
I have that same feeling! :)
Great feeling :)

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Re: Marshmallow's build thread

Post by Marshmallow »

Couldn't do much the past 2 days but this is what it looks like with the parts laid out. It's going be very similar to an sss/jm now. Should I start posting videos of my previous amps? Not the best quality but it should be fine.

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Re: Marshmallow's build thread

Post by jeremyb »

Marshmallow wrote: Fri Jul 12, 2024 10:41 am Should I start posting videos of my previous amps? Not the best quality but it should be fine.
YES!!!
Slowy wrote: That's the problem; everything rewarding is just such hard work. Regret takes much less effort.

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Re: Marshmallow's build thread

Post by Marshmallow »

Great. I'll start with the 3W Amp. The guy from japan who bought this sent a video earlier this year. He's running a small amount of reverb and delay through the front end of the amp. It's a simple circuit, great for bedroom use and pedals. It has clean and dirt channels and is an original circuit, not based on any existing designs. I have yet to make this into a 20w then a 50w.
Simple controls. Volume, Tone, Gain - Switches are bright, boost and dirt. 8 ohms out.

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Re: Marshmallow's build thread

Post by NZTone.e »

That sounds wicked man, assuming he was using the clean channel?

How much dirt you reckon there is?

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Re: Marshmallow's build thread

Post by Marshmallow »

NZTone.e wrote: Fri Jul 12, 2024 2:55 pm That sounds wicked man, assuming he was using the clean channel?

How much dirt you reckon there is?
Yup he was using clean at break up. It gets pretty gainy with the dirt channel but not too gainy where you lose clarity.

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Re: Marshmallow's build thread

Post by robthemac »

Hah this bloke loves Where The Light Is.

Sounds like a really handy player. Strat into D-style?
Jops wrote: Sun Sep 18, 2022 7:46 am Spring is the comic sans of reverbs anyway.

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Re: Marshmallow's build thread

Post by StrummersOfThunder »

Looks great , sounds great !

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Re: Marshmallow's build thread

Post by JustMatt »

Marshmallow wrote: Fri Jul 12, 2024 2:50 pm Great. I'll start with the 3W Amp. The guy from japan who bought this sent a video earlier this year. He's running a small amount of reverb and delay through the front end of the amp. It's a simple circuit, great for bedroom use and pedals. It has clean and dirt channels and is an original circuit, not based on any existing designs. I have yet to make this into a 20w then a 50w.
Simple controls. Volume, Tone, Gain - Switches are bright, boost and dirt. 8 ohms out.

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What sort of coin do you build an amp like that one for?

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Re: Marshmallow's build thread

Post by Marshmallow »

The next up is 10W Custom Reverb amp. It's a bit tricky to describe. Would really prefer people to play through it. It has a slightly raw, hairy tone, more on the classic side. High in mids like dumble but less compression. It runs KT77/El34/6L6 tube single-ended design and a tube spring reverb and very rich in harmonics. The controls are simple: gain, treble, middle, bass, master, reverb return, and send (back). It also has an 8-ohm output and switches for Bright, Preamp Boost, and Deep.

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Warren playing through the amp during Jam session. I believe he has the guitar volume quite low on this one.


Me playing through it on higher gain settiing. Pretty much just the amp and amp reverb.

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Re: Marshmallow's build thread

Post by Marshmallow »

JustMatt wrote: Fri Jul 12, 2024 3:30 pm
What sort of coin do you build an amp like that one for?
With this size we're usually looking at 500-700ish. But pretty much let this one go for cheap. Haven't built one in NZ so I wouldn't know the cost :lol: .

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Re: Marshmallow's build thread

Post by StrummersOfThunder »

It’s really great to see the amp build talent around on the forum at the moment. Marshmallow these are looking and sounding amazing. Keep it up

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