Recent Posts

91

Solid State / Re: DC to AC Inverter

« Last post by shooter on September 05, 2026, 03:51:40 pm »

been using these folk for 20 years with my solar array, bit overkill for your needs although i did find a good deal there on a 100W panel n charge controller to do basically what you're doing, I have a 55gal water tank n 12vdc pump for watering the garden.




 https://www.aimscorp.net/product-category/dc-to-ac-power-inverters/

92

Tube Amp Building - Tweaks - Repairs / Re: Pro- amp planning

« Last post by sluckey on September 05, 2026, 03:00:37 pm »

My latest plan is to build the 6g5 but save a preamp tube by making it a single channel as the preamp and tone stack are the same on both channels and simply switch to route the signal through the tremolo circuit or direct to the PI. Any obvious problems?

It's doable. Use a DPDT switch. You'll need to switch the output of V2 in order to match the dry signal level to the wet signal level and also switch the PI input. It would be so much simpler to just build it like the original, ie, let the guitar signal always go through V4 modulator and use the footswitch to engage the tremolo.

93

Solid State / Re: DC to AC Inverter

« Last post by dpm309 on September 05, 2026, 02:56:22 pm »

Yeah, I thought that would not work. Will check out Amazon and Walmart.Thanks,

94

Tube Amp Building - Tweaks - Repairs / Re: Low clean output (Dynacord Twen)

« Last post by Helmholtz on September 05, 2026, 02:50:59 pm »

Wima made different types.
Here's some info on those used in early Vox amps:
https://www.voxac30.org.uk/vox_ac30_wima_capacitors.html

95

Solid State / Re: DC to AC Inverter

« Last post by sluckey on September 05, 2026, 02:34:43 pm »

You can't just reverse a power supply. But Amazon or WalMart have plenty if small inverters...

     https://www.amazon.com/s?k=dc+to+ac+inverter+500w
     https://www.walmart.com/search?q=dc+to+ac+inverter+500w

96

Tube Amp Building - Tweaks - Repairs / Re: Pro- amp planning

« Last post by Mike-p on September 05, 2026, 02:26:36 pm »

Well since my last post I've done nothing except work for very little pay and parenting for even less... More importantly I've got really into Marc Ribot and thereby completely changed my opinion on tremolo...My latest plan is to build the 6g5 but save a preamp tube by making it a single channel as the preamp and tone stack are the same on both channels and simply switch to route the signal through the tremolo circuit or direct to the PI. Any obvious problems?

I've also started looking at the Laney chassis wondering what to keep like the mini PCB for the output jacks and switch? Keep the rivetted in tube sockets or drill them out? If I keep the sockets should I keep any of the wiring? Heater wiring? It's all pretty nice and neat or should a start fresh as it'll be a nightmare if I'm chasing problems with recycled parts?

97

Solid State / DC to AC Inverter

« Last post by dpm309 on September 05, 2026, 02:09:04 pm »

I want to construct or buy a simple DC (9 or 12 Volts) to AC (120 VAC) to power a small water pump on a fountain. Want to place the fountain in an area that lacks any nearby AC outlets. Have been looking online and have not been able to find what I am looking for. Could I just reverse say a 9VDC power supply? Any ideas?Thanks, Dan

98

Tube Amp Building - Tweaks - Repairs / Re: PRS Sonzera 20 Schematic

« Last post by pdf64 on September 05, 2026, 11:38:44 am »

Both AC and DC sides of the rectifier are balanced with respect to 0V common, so 3.15V AC and +/-3.15V DC (or thereabouts).
Decoupling the DC sides (ie to 0V common) can't hurt, but may not have much benefit.

99

Tube Amp Building - Tweaks - Repairs / Re: Low clean output (Dynacord Twen)

« Last post by AlNewman on September 05, 2026, 11:28:06 am »

My bad.  They look very similar to wax caps.  I wonder, are they still paper and foil caps, or a different dielectric?

100

Other Topics / Re: Meme of the day

« Last post by shooter on September 05, 2026, 11:15:52 am »

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