Sound clips please??

Dr Tony Balls wrote: Wed May 10, 2023 12:11 pm
That's helpful, especially in regard to the in/out transformers. Thanks! Can you send me the pdf? Curious about how they're doing the power supply....i've seen some with DC filaments vs AC, some regulated, others not.

so I looked up what transformers I used:

the input transformer is a Sowter 9610 200/20k Microphone input 67£
the out put transformer Edcor XSM10K/600 25$
the power transformer is from Don Audio "Mila" transformer 75$ with a 48V secondary for the phantom power

https://www.don-audio.com/Toroidal-Tran ... -63vct-48V

here's the main thread on GroupDIY. everything fm NewYorkDave says might be of interest since he designed the preamp:

https://groupdiy.com/threads/newyorkdav ... ead.24919/

mdc wrote: Sat May 20, 2023 7:51 am There are a lot of circuits where it’s hard to implement to get that dramatic effect you get on fuzz face variants. eg, big muffs /tbmkiii family. I guess it depends on how the transistors are biased in the first place?

Concur! Some take it better than others.

Ace K wrote: Sun May 21, 2023 8:24 pm Sound clips please??

Here's a real sloppy quick one: https://youtube.com/shorts/sewBEzKKsfw?feature=share

bassdriver wrote: Mon May 22, 2023 3:59 am so I looked up what transformers I used....

THANKS. This will be helpful when I get around to it.

Also, none of these schematics show phantom power being provided....is that ever a thing or is a separate power supply generally used for that?

Phantom Power is a huge plus (speaking as someone who does not have any external phantom power supplies)

BrendanK wrote: Mon May 22, 2023 10:02 am Phantom Power is a huge plus (speaking as someone who does not have any external phantom power supplies)

yeah, I would also say you would have to do that. I can't think of mic preamp that doesn't provide phantom power.

here's a schematic of how it's applied:


I think if you have a regulated 48V supply you can simply apply it through 2 6K8 resistors to the +/- input pins.

BrendanK wrote: Mon May 22, 2023 10:02 am Phantom Power is a huge plus (speaking as someone who does not have any external phantom power supplies)

Co-signed. All mic preamps should have phantom power and a polarity (phase) switch.

tommy wrote: Tue May 23, 2023 9:42 am

BrendanK wrote: Mon May 22, 2023 10:02 am Phantom Power is a huge plus (speaking as someone who does not have any external phantom power supplies)

Co-signed. All mic preamps should have phantom power and a polarity (phase) switch.

I really like having a -15/-20 db pad too if we're on to suggestions?

Dr Tony Balls wrote: Mon May 22, 2023 9:12 am

mdc wrote: Sat May 20, 2023 7:51 am There are a lot of circuits where it’s hard to implement to get that dramatic effect you get on fuzz face variants. eg, big muffs /tbmkiii family. I guess it depends on how the transistors are biased in the first place?

Concur! Some take it better than others.

Thanks for the info!

Garth wrote: Tue May 23, 2023 9:47 am

tommy wrote: Tue May 23, 2023 9:42 am

BrendanK wrote: Mon May 22, 2023 10:02 am Phantom Power is a huge plus (speaking as someone who does not have any external phantom power supplies)

Co-signed. All mic preamps should have phantom power and a polarity (phase) switch.

I really like having a -15/-20 db pad too if we're on to suggestions?

Heck yeah on pads! It's like the cheapest thing to add and sooo often skipped.