Marshmallow's build thread

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MikeC
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Re: Marshmallow's build thread

Post by MikeC »

Great score!
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Re: Marshmallow's build thread

Post by Marshmallow »

Last. Got a few more amps to build for others before I can start building slightly more complicated circuits again. New circuit designs on the way.

Was also finally able to meet Mike! (Awesome dude)

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Re: Marshmallow's build thread

Post by robthemac »

Marshmallow wrote: Mon May 20, 2024 8:52 am Last. Got a few more amps to build for others before I can start building slightly more complicated circuits again. New circuit designs on the way.

Was also finally able to meet Mike! (Awesome dude)

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What's this one? Doesn't look like a 5e3.
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 Marshmallow »

Speakers for new builds. Wasn't able to get the d120f for collection so got a pair of each instead. 🤣

Philips
RCF
Evm12l
Ev force 12
Jbl d123
Axiom audio 30w (vox?)



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Re: Marshmallow's build thread

Post by Marshmallow »

robthemac wrote: Mon May 20, 2024 8:55 am
Marshmallow wrote: Mon May 20, 2024 8:52 am Last. Got a few more amps to build for others before I can start building slightly more complicated circuits again. New circuit designs on the way.

Was also finally able to meet Mike! (Awesome dude)

Image
What's this one? Doesn't look like a 5e3.
Nah it's a gibson, it sounds good. It's a 12w and Running el84s :) good to have a different amp in my collection. 🤣

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Re: Marshmallow's build thread

Post by MikeC »

After meeting Thomas (aka Marshmallow) the other day I still think he's an amp building machine! Kudos.
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Re: Marshmallow's build thread

Post by blackstratblues »

Marshmallow wrote: Mon May 20, 2024 8:58 am
Axiom audio 30w (vox?)
Goodmans UK made. Nice speakers

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Re: Marshmallow's build thread

Post by Tubaholic »

These are beautifully made amps, fabulous work. Do you bend the aluminium yourself?

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Re: Marshmallow's build thread

Post by Tubaholic »

Marshmallow wrote: Fri Apr 26, 2024 8:58 am Figured I'd kick off a fresh thread to mark the new chapter in my building journey. With a new country comes a new approach, right? :lol:

Thanks to friends who chipped in with power tools, and with a decent job, I'm all set up to make amps for myself without having to sell them. Also got a bunch of these electrical wires from a good friend.

Few projects coming up, I'll start with the more boring ones. Build approach is still based on what I did in Japan. I completed this amp about a month ago or so ago using one of the chassis I brought with me from Japan. This build combines elements from different circuits: it's got the reverb circuit from a Custom Reverb, the preamp from a Two Rock JM amp, and the OD section from a #60. The result? Pristine and touch sensitive cleans and OD. OD is raw and the reverb circuit is the cleanest circuit I've heard in a while.

Will post gut shots in the next few days (If i remember)

Few minor details:
Gain Structure switch
Footswitch
Negative Feedback
2 parallel speaker outs with impedance selection (4,8,16)
Effects Loop
Individual bias test points.
2x 6l6,
Hammond PT, OT, Reverb and choke.

Tolex, grille and corners from LiveSound, running JBL E120.

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I'll try upload build processes here as I go.
Would you share the schematic please?

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Re: Marshmallow's build thread

Post by Marshmallow »

Tubaholic wrote: Wed Jun 05, 2024 11:12 pm
Marshmallow wrote: Fri Apr 26, 2024 8:58 am Figured I'd kick off a fresh thread to mark the new chapter in my building journey. With a new country comes a new approach, right? :lol:

Thanks to friends who chipped in with power tools, and with a decent job, I'm all set up to make amps for myself without having to sell them. Also got a bunch of these electrical wires from a good friend.

Few projects coming up, I'll start with the more boring ones. Build approach is still based on what I did in Japan. I completed this amp about a month ago or so ago using one of the chassis I brought with me from Japan. This build combines elements from different circuits: it's got the reverb circuit from a Custom Reverb, the preamp from a Two Rock JM amp, and the OD section from a #60. The result? Pristine and touch sensitive cleans and OD. OD is raw and the reverb circuit is the cleanest circuit I've heard in a while.

Will post gut shots in the next few days (If i remember)

Few minor details:
Gain Structure switch
Footswitch
Negative Feedback
2 parallel speaker outs with impedance selection (4,8,16)
Effects Loop
Individual bias test points.
2x 6l6,
Hammond PT, OT, Reverb and choke.

Tolex, grille and corners from LiveSound, running JBL E120.

Image

Image

Image

I'll try upload build processes here as I go.
Would you share the schematic please?

Hey man have it hand written, prefer not to share them around atm as it took me some time to put it together haha.

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Re: Marshmallow's build thread

Post by Marshmallow »

Just obtained this thing - Celestion Alnico Cream 90w 8 ohm.

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Freshly cut preamp boards for new projects. Just ordered the power/reverb transformers. Will start the build when they arrive.

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Re: Marshmallow's build thread

Post by Marshmallow »

Parts arrived.

Just waiting for the 40w output transformer to arrive. Should be by Monday. Featuring my partners foam roller. :lol:

Unfortunately I'm still using the blank chassis I built in Japan.

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Re: Marshmallow's build thread

Post by Marshmallow »

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Re: Marshmallow's build thread

Post by Marshmallow »

All the transformers have arrived, including a few extras for potentially 4 more builds. Unfortunately, I have evening work until next week. I'll resume working on it in 2 weeks' time! Looking forward to getting started again! Even though I have a mini workshop, i'm still working in the bedroom. Must be a new habit of mine haha.

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Re: Marshmallow's build thread

Post by robthemac »

What's this Two Rock / Dumble hybrid going to be putting out power-wise?
Jops wrote: Sun Sep 18, 2022 7:46 am Spring is the comic sans of reverbs anyway.

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