Pro Audio Design Forum

YPaul can tell us how much he needs to use it now versus then on program for cutting vinyl, still a growing trend. High frequency limiters have always been necessary for lacquer cutting. The earliest stereo cutting electronics had them. The Ortofon 632 was part of the first generation tube cutting ...

I’d just add that the high frequency limiters I’m referencing work exceptionally well on single instruments. They are just overkill for most. The BSB74 was never sold as a standalone unit. Only as part of the cutting rack. The Maselec was 2-4X the price of most other de essers. Now that they are no ...

I've had an interest in a de-esser/sibilance controller for vinyl and have wanted to wrap my head around the BSB74. It would need to be a dedicated box.. Jakob Erland once described it as S&M engineering. With the inductor based delay line. I have the BSB74 literature. If you need anything let ...

I repeat my question is de-ess still a thing? It was a few decades ago. Yes it's still a thing and very useful. For a dedicated stereo compressor it would have to react favorably to stereo program material and not single instruments, including voice. I can count on less than one hand analog high fr...

any interest in a de-ess side chain filter? Or is that not as much of problem these days? Since this is a stereo compressor a simple de esser like a DBX900 would be inadequate for most audio program. It would need to be a much fancier side chain than a bandpass filter. Floating threshold, reacts to...

The RIAA path through the first input has two coupling caps - one at the input the second at the output - so the cutoff is about 1.6X higher IIRC. With a FET op amp in the RIAA section you might be able to eliminate the one on the RIAA output. I always wondered whether it was better to drive the RI...

These are working into a 14K3Ω load. Wima now have some nice 5 mm lead spaced films in the MKS2 series that go up to 6.8µF so keeping them film is do-able. It looks like if you want polypropylene 4,7uF is the largest easily available. Mouser has offerings in a 22.5mm LS for the old boards from Pana...

I have some 4.7uF Cornell Dubilier PP film caps that I used in the Sontecish EQ. I still have some that are within a couple of precent of each other. This produces +19dBu @ 20 Hz.

I’ll leave the other ones with 1.0uF in place and will listen to see which I like best.

Thanks Wayne. I’ll see what I have and what will fit. I rhink I’ll stick with a film cap.

I'm making three separate PTS's. Each will have a tonearm attached. I have the three working. Doing the frequency response tests in the construction information produces the stated results. My gain structure is a little different so I'll use my numbers instead of what's in the instructions. If there...