Marshmallow's build thread

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Marshmallow
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Marshmallow's build thread

Post by Marshmallow »

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.

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Re: Marshmallow's build thread

Post by MiniForklift »

Look awesome, always impressed by your work. So are you back in NZ now?
β€œπ‘πžπšπ₯𝐒𝐭𝐲 𝐒𝐬 𝐭𝐑𝐞 𝐩𝐨𝐒𝐧𝐭 𝐭𝐑𝐚𝐭 π₯𝐒𝐞𝐬 π›πžπ­π°πžπžπ§ 𝐝𝐒𝐬𝐚𝐩𝐩𝐨𝐒𝐧𝐭𝐦𝐞𝐧𝐭 𝐚𝐧𝐝 πžπ±π©πžπœπ­πšπ­π’π¨π§β€

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StrummersOfThunder
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Re: Marshmallow's build thread

Post by StrummersOfThunder »

Rad sounds like a cool amp
Wouldn’t mind doing a demo on it

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Re: Marshmallow's build thread

Post by jeremyb »

Sounds beyond rad!!
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 JoeBlow »

I want to hear it πŸ”Š The description sounds great.

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Re: Marshmallow's build thread

Post by robthemac »

StrummersOfThunder wrote: ↑Fri Apr 26, 2024 9:54 am Rad sounds like a cool amp
Wouldn’t mind doing a demo on it
Double forum demo in Northland.
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 »

Keen for a gearfest!

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Re: Marshmallow's build thread

Post by Marshmallow »

Recently acquired a collection of NOS parts yesterday dating back to the 70s. Enough to last me many years of amp making. From Philips resistors, Yellow mustards, Matsushita and National capacitors, terminals, fuses, solder, solder stations etc. A shop was closing down and I picked what I needed for a fraction. Pretty good deal I must say. Time to start building I guess.

Image

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Image

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Re: Marshmallow's build thread

Post by jeremyb »

Shit a brick, score!
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 robthemac »

Epic.
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 »

Thought I'd share this as well. 5e3 style circuit - 20w (classictone PT), SS rectifier, 6v6 with minimal wire crossover.
Yellow mustart caps, industrial wiring. individual bias test points and single ground.

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Re: Marshmallow's build thread

Post by Marshmallow »

Here's another 5E3 with robinette mods and bigger chassis.

Been enjoying these smaller amps lately. Maybe I'll try a gibson circuit haha.

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Re: Marshmallow's build thread

Post by jeremyb »

I wouldn't even play that, I'd just leave the open chassis on display as art.
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 MikeC »

Marshmallow wrote: ↑Fri May 03, 2024 8:11 am Recently acquired a collection of NOS parts yesterday dating back to the 70s. Enough to last me many years of amp making. From Philips resistors, Yellow mustards, Matsushita and National capacitors, terminals, fuses, solder, solder stations etc. A shop was closing down and I picked what I needed for a fraction. Pretty good deal I must say. Time to start building I guess.

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Phwoar, where'd you "aquire" these?
Whakanuia o mea kei a koe

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Re: Marshmallow's build thread

Post by Marshmallow »

MikeC wrote: ↑Tue May 07, 2024 8:28 am
Marshmallow wrote: ↑Fri May 03, 2024 8:11 am Recently acquired a collection of NOS parts yesterday dating back to the 70s. Enough to last me many years of amp making. From Philips resistors, Yellow mustards, Matsushita and National capacitors, terminals, fuses, solder, solder stations etc. A shop was closing down and I picked what I needed for a fraction. Pretty good deal I must say. Time to start building I guess.

Image

Image

Image
Phwoar, where'd you "aquire" these?
Axcent Audio! My mate jeremy was working there. They fully sold the business I think and had to clear out.

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