MikeC Sixty-One SRT

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MikeC
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MikeC Sixty-One SRT

Post by MikeC »

After seeing the video I had to build one - my take of the Vox AC10 SRT which I'm calling a Sixty-One SRT https://www.youtube.com/watch?v=alBO_yEn5o4.
What an awesome sounding amp and my plan is to make this a combo.
I found a schematic (with errors) and created my own layout which I built on a pre-drilled turret board. This is the prototype.
It's not very tidy but v2 will be.
Tonight I got it going with tremolo and (some) reverb - I'm quite stoked.
Now the modding and tuning begins!
Sixty-One SRT v1 gutshot.jpg
Sixty-One SRT v1 gutshot.jpg (1.48 MiB) Viewed 76963 times
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Re: MikeC Sixty-One SRT

Post by codedog »

That sounds awesome!

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Re: MikeC Sixty-One SRT

Post by jeremyb »

Far out, am beyond excited with this build, may be tempted by a non-reverb and trem version if that will be in the works at any point?
Slowy wrote: That's the problem; everything rewarding is just such hard work. Regret takes much less effort.

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Re: MikeC Sixty-One SRT

Post by MikeC »

jeremyb wrote: Fri Mar 03, 2023 8:14 pm Far out, am beyond excited with this build, may be tempted by a non-reverb and trem version if that will be in the works at any point?
I suspected it would inflate your tyres JB! Removing the reverb is way easier than making it work - the original Vox AC10 SRT used their own reverb tank design which was essentially 2x ceramic cartridge transducers (i.e. from old stereos prior to magnetic cartridges) - apparently done so Vox didn't have to pay Hammond a royalty for their patented reverb tanks! I've got the reverb working with a "Hammond" tank BTW.
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Re: MikeC Sixty-One SRT

Post by codedog »

SRT is my idea of a grab'n'go amp. This is right up my alley!

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Re: MikeC Sixty-One SRT

Post by jeremyb »

Already designing the combo cab in my mind and thinking about 10" speakers :rofl:
Slowy wrote: That's the problem; everything rewarding is just such hard work. Regret takes much less effort.

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Re: MikeC Sixty-One SRT

Post by MikeC »

codedog wrote: Fri Mar 03, 2023 8:24 pm SRT is my idea of a grab'n'go amp. This is right up my alley!
Agreed, 10W clean, reverb & tremolo. Awesome when driven!
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Re: MikeC Sixty-One SRT

Post by codedog »

MikeC wrote: Fri Mar 03, 2023 8:29 pm
codedog wrote: Fri Mar 03, 2023 8:24 pm SRT is my idea of a grab'n'go amp. This is right up my alley!
Agreed, 10W clean, reverb & tremolo. Awesome when driven!
IIRC the original doesn't have master volume, right? Any chance this one can have MV or some kind of power scaling?

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Re: MikeC Sixty-One SRT

Post by jeremyb »

I don't know if I could part with my AC10 so maybe I'd have both :lol:
Slowy wrote: That's the problem; everything rewarding is just such hard work. Regret takes much less effort.

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Re: MikeC Sixty-One SRT

Post by jeremyb »

codedog wrote: Fri Mar 03, 2023 8:35 pm
MikeC wrote: Fri Mar 03, 2023 8:29 pm
codedog wrote: Fri Mar 03, 2023 8:24 pm SRT is my idea of a grab'n'go amp. This is right up my alley!
Agreed, 10W clean, reverb & tremolo. Awesome when driven!
IIRC the original doesn't have master volume, right? Any chance this one can have MV or some kind of power scaling?
Nahhhh it's only 10 watts, thats half as loud as a 100W amp, barely hear it! jeez louise!
Slowy wrote: That's the problem; everything rewarding is just such hard work. Regret takes much less effort.

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Re: MikeC Sixty-One SRT

Post by GrantB »

V Nice! 7189 tubes?
"Man is the most insane species. He worships an invisible god and destroys a visible nature. Unaware that this nature he's destroying is this god he's worshipping." - Hubert Reeves

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Re: MikeC Sixty-One SRT

Post by MikeC »

Preamp tubes are NOS 12AU7s except V1 (12AX7). Early days yet! Genalex Gold Lion El84's in the power amp.
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Re: MikeC Sixty-One SRT

Post by MrDINO »

This sort of stuff encourages amp collection

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Re: MikeC Sixty-One SRT

Post by MikeC »

codedog wrote: Fri Mar 03, 2023 8:35 pm
MikeC wrote: Fri Mar 03, 2023 8:29 pm
codedog wrote: Fri Mar 03, 2023 8:24 pm SRT is my idea of a grab'n'go amp. This is right up my alley!
Agreed, 10W clean, reverb & tremolo. Awesome when driven!
IIRC the original doesn't have master volume, right? Any chance this one can have MV or some kind of power scaling?
Correct, no MV. Global Power Scaling is already in the plan - see that joiner in the red wire - that's where I will scale the power amp section only. But gotta get the amp working 100% before I start the GPS experiments :) PS I tested the amp's power output this morning, it's around 12W RMS clean.
Last edited by MikeC on Sat Mar 04, 2023 5:17 pm, edited 1 time in total.
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Re: MikeC Sixty-One SRT

Post by robthemac »

What are you going to do with the prototype?
Jops wrote: Sun Sep 18, 2022 7:46 am Spring is the comic sans of reverbs anyway.

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