Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: imgumby001 on September 09, 2023, 02:20:27 pm

Title: Dual Lite Underway…
Post by: imgumby001 on September 09, 2023, 02:20:27 pm: Sup y’all,

Finally got underway on the dual lite build. Got the chassis figured out(i think anyway…). Cut and drilled the old KLD(failed) chassis. Good heavy chassis, not easy to cut/drill. Mocked up as you see. All, basically, according to Mr. Lucky’s layout. Not sure if I really care about the chassis being ugly. Gonna try to get the board cut and drilled tomorrow. It’d be nice the have the turrets staked as well. Already having a lot of fun!!!!!
Title: Re: Dual Lite Underway…
Post by: imgumby001 on September 16, 2023, 01:32:26 pm: Okay, so the ugly chassis did bother me after all. Got the turret board staked and ready. Maybe get some actual wiring done tomorrow…
Title: Re: Dual Lite Underway…
Post by: imgumby001 on September 17, 2023, 11:00:18 am: Does anyone feel like I’m asking for trouble with this heater wiring? Clearly I’m not feeling confident!
Title: Re: Dual Lite Underway…
Post by: labb on September 17, 2023, 12:38:22 pm: Tie them together with zip ties and you will be ok.
Title: Re: Dual Lite Underway…
Post by: imgumby001 on September 17, 2023, 12:57:19 pm: Quote from: labb on September 17, 2023, 12:38:22 pm
Tie them together with zip ties and you will be ok.

Thanks bubba!!! Will do.
Title: Re: Dual Lite Underway…
Post by: imgumby001 on September 23, 2023, 12:42:05 pm: Made some decent progress. Board is populated and mounted. Power amp is wired downstream from the pi. Starting to resemble an amplifier…
Title: Re: Dual Lite Underway…
Post by: imgumby001 on September 26, 2023, 04:42:20 pm: Well, it’s alive!!!! After a couple hiccups she’s a runnin. And boy is she ever awesome!!! Punchy and piercing, so much volume from the little ‘84’s. The 6ak5 is wonderfully warm, that where most of the real gut punch is. The 12ax7 preamp side is great cranked. If there’s any complaints the 6ak5 is seriously microphonic. I swapped out the rca for a triode and no change. But ya, love it!!!
Title: Re: Dual Lite Underway…
Post by: sluckey on September 26, 2023, 05:04:22 pm: I'm surprised the 6AK5 is microphonic. Maybe get another one. Better yet, get a 5654.
Title: Re: Dual Lite Underway…
Post by: Greenwichpaul on October 25, 2023, 05:22:14 am: I have most of the parts ready for an 18W build, to replace a much-loved Park 20W; Sluckey, am I right in thinking you thought the Dual Lite was less tame than your AX84 Plexi style November build - so I'm guessing it has more grunt?

Why is that, when iirc your november amp had one more preamp stage?
Title: Re: Dual Lite Underway…
Post by: sluckey on October 25, 2023, 06:17:17 am: The Dual Lite has a more raw, in your face sound due to a less lossy tone control and no NFB.
Title: Re: Dual Lite Underway…
Post by: labb on October 25, 2023, 10:07:40 am: You were concerned about your heater wiring. Any issues?