Tube Amp Archive

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Heyboer OT https://shop.amppartsdirect.com/collections/apd-custom-by-heyboer/products/tw-style-30w-output-transformer-6-6ak-to-4-8-16-ohm-apd-8064-h PT https://shop.amppartsdirect.com/collections/apd-custom-by-heyboer/products/tw-style-30w-power-transformer-120v-240v-apd-8065-h These are very good.

I recently changed out the F&T 220uf caps in my 102 to Nichicon 220uf 400V and there was a noticeable difference in the OD tone being smother, the Nichicon are a general purpose cap. I'm wondering what the condition of the F&T's was. Were they old? Martin, They were new when installed less than two...

EV-12S

I wanted to see if there is a preference to use Audio grade caps vs General purpose caps for the filtering. I watched a video on YouTube where the tech was replacing caps in an audio amplifier, he was looking at Nichicon caps, Audio grade. https://www.youtube.com/watch?v=37JCDYgzZdU For the voltages...

Thanks for the responses everyone, much appreciated, looks like I will start with the JJs.

Steve

Starting a HRM build and going with EL-34s and wanted to see if JJ is the bast available.

I use their 6L6GCs and really like them.

Thanks in advance for your input.

Steve

that's really cool. ive never etched boards myself. maybe ill start there since I probably have a good portion of the capacitors and stuff needed. although I generally feel building the boards first is kinda backwards. The files you need for the boards are all in the forum, I have found that using ...

Colossal, thanks for the reply, the ones I ordered arrived today, looking forward to using them on my next build.

Yes, I built the preamp board and etch the PS, Bias, TET and 12 volt boards myself, I just enjoy doing it.

Taylor has great boards, chassis and cabinets, my 102 and JM signature builds have his boards in them.

Steve

Has anyone tried either the metal film or carbon film resistors in their amp builds?

I really don't use the FET input on my other amps with it, I know some like to use it when playing a Strat, I just run mine through the normal input. I used to the two 9v battery method to set the bias on the FET, I believe that was from Martin, who is great guy, helped me with a Dumbleator I was bu...

Thanks to Taylor for the chassis, and Jelle for some great resistors, they do make a difference.

Thanks everyone, this has become my new favorite circuit, Clean is great with a Strat, Tele, Les Paul, Overdrive is really sweet. Considering changing the bright cap to 100pf or 250pf, cannot really hear a difference with a 47pf cap. Added a 3.9k off of the Mid pot to try and tame the Boost as it is...