output transformer upgrade ?

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Re: output transformer upgrade ?

Post by RectifiedAmps »

In case anyone isn’t aware, Mouser NZ has Hammond transformers and shipping (from USA probably) is free for over $50:
https://nz.mouser.com/ProductDetail/Ham ... bSog%3D%3D

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Re: output transformer upgrade ?

Post by RectifiedAmps »

StrummersOfThunder wrote: Tue Jan 19, 2021 9:35 pm For surf guitar we are after big bottom end and plenty of headroom
You’d get more oomph out of replacing the valve rectifier with a weber copper cap, or get a tech to wire in silicon diodes instead. It’d stiffen up and slightly boost the power supply, for more headroom and possibly more bass.

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Re: output transformer upgrade ?

Post by StrummersOfThunder »

RectifiedAmps wrote: Tue Jan 19, 2021 9:48 pm
StrummersOfThunder wrote: Tue Jan 19, 2021 9:35 pm For surf guitar we are after big bottom end and plenty of headroom
You’d get more oomph out of replacing the valve rectifier with a weber copper cap, or get a tech to wire in silicon diodes instead. It’d stiffen up and slightly boost the power supply, for more headroom and possibly more bass.
Haven't heard if one of those cooper caps. Cheers

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Re: output transformer upgrade ?

Post by bender »

I upgraded the OT in my old Bandmaster. Sounded good, but not a huge difference.

Since you already have a big clean surf (crack) amp, do you need to mod this old beasty?

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Re: output transformer upgrade ?

Post by StrummersOfThunder »

bender wrote: Wed Jan 20, 2021 5:07 am I upgraded the OT in my old Bandmaster. Sounded good, but not a huge difference.

Since you already have a big clean surf (crack) amp, do you need to mod this old beasty?
No , but I'd like the option to run 8ohm tap

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Re: output transformer upgrade ?

Post by crowbgood1 »

I have an ot from a old pa. Big thing with multiple taps. Interested?
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Re: output transformer upgrade ?

Post by StrummersOfThunder »

I think I'll just go for an OME replacement that has 4/8/16 taps
Was just interested in the ideas around going bigger. But as bender points out, part of the charm of the tremolux is that it isn't a 100w showman or bassman

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Re: output transformer upgrade ?

Post by sizzlingbadger »

You could run an 8ohm cab on that 4ohm tap without issues.
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Re: output transformer upgrade ?

Post by MikeC »

sizzlingbadger wrote: Wed Jan 20, 2021 7:27 am You could run an 8ohm cab on that 4ohm tap without issues.
Apart from a reduction in power to the speaker.
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Re: output transformer upgrade ?

Post by StrummersOfThunder »

I've ordered the mouser 1760j
If someone is in the know can they link the type of rotary switch I'd need to make it impedance switchable ?

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Re: output transformer upgrade ?

Post by RectifiedAmps »

This is the type that you’d need:
https://nz.rs-online.com/web/p/rotary-switches/4289588/

Probably cheaper options but these ones are really solid

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Re: output transformer upgrade ?

Post by StrummersOfThunder »

RectifiedAmps wrote: Wed Jan 20, 2021 10:21 am This is the type that you’d need:
https://nz.rs-online.com/web/p/rotary-switches/4289588/

Probably cheaper options but these ones are really solid
Nice one.
Thanks for the input
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