Search results

This is true in golf as well...

That NP capacitor is probably in the signal path and if the signal is not bias, the NP capacitor is the better choice since the original capacitor was likely reverse biased every time the signal changed polarity. A film cap might be even better.

Just a couple of notes to Snif's soldering recommendations - all of which I agree. Install components so you can read their values. I hate it when I have to stand on my head (or use a mirror) to see the value. There are a bunch of how-to videos on soldering. Watch them. Clean, clean, clean -...

I watched these items on EBay realizing the guy was parting out a 700B hoping to get more than if he had sold it as one lump. I think he'd made more if he had kept it together and sold it that way. $328.54 minus whatever Ebay takes doesn't seem worth it.

Go here for parts and updates for each item in your Dynaco stack: https://www.updatemydynaco.com/ So I've built a number of Dynaco kits - SCA-80Q, PAT5, 416, ST70 clone, etc. Started back when I was a starving college student in the early 70's with the SCA-80Q. Built the 416 and PAT5 when...

The correct setting for the FM de-emphasis switch for North America is 75uS. I believe the 25uS setting was for Dolby FM, which never took off. Europe uses 50uS. To lower the HF noise, FM broadcasts pre-emphasize (i.e. boost) the high frequencies, the receiver then de-emphasizes these...

Living room coffee table is good for transmission work.

It is 3/4" birch plywood. Thanks for the tips. I bought the flat pack kit from Speaker Hardwood: https://www.speakerhardware.com/philharmonic-bmr-flat-pack.php, but had lots of issues with it, mostly due to mis-cut pieces. All was made right in the end when they sent new, properly cut sides...

Here is a photo of some speakers I've been building from a kit - the Philharmonic Audio BMR speaker. You can find the kit here - https://meniscusaudio.com/product/philharmonic-audio-bmr-speaker-kit/ And a review here: https://www.audioholics.com/bookshelf-speaker-reviews/bmr-philharmonitor-1...

I suspect it has to with with the Peak Unlimiter and/or the Correlator. That altered signal could pass through those circuits, if switched in, and the effects of the external processing could impact what they do, particularly the Peak Unlimiter. Just my guess.

Less copper.

Precisely what I intend to do. Kind of a science project. See what I can get away with.

So I bought one of the Craig's List transformers noted in Post #10. Bought a 100v input one (must have been for the Japanese market), but intend to run it with 120vac. That should give 72 - 0 - 72 vac out on the secondary (on the 60 - 0 - 60 taps), which should give about +/-100 vdc power supply.

No 12vac option. I would just add a baby transformer for that.

The one I was looking at, Hammond 1182T60, Digikey sells for $196 or the 1182R60 for $150. Both have secondaries of 120vct, which would give about +/-80vdc power supply - roughly equivalent to the PL400. The T model is 1500va, the R model is 1000va. But I see the advantage of using two...

I was thinking along the same lines. Instead of buying a PL400 or 700 for essentially just the chassis and power transformer, you could do a White Oak in a chassis of your own design. The PL700s in particular are getting quite pricey.

Has anyone considered or tried to use one of these for the power transformer in a PL400 or 700? Other than physical constraints, what would be the electrical issues? Considerations for magnetic shielding?

Interesting. It must be recording the harmonics since I would expect the fundamental would be the length of the string. Cool effect, though.

I would go ahead and try the MJE15032G. I think it should work just fine. This is not a critical circuit - just a standard voltage regulator. It will still dissipate the same heat as the 2SD288. It won't hurt to try. Just ensure you install it correctly and then check the voltage at the...

yup.