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If the transformer has a grounded centre tap, when connected via an unbalanced jack half of the winding will be short circuited. The effect of this would be to put a load onto the other side of the transformer shorting out the audio. If it’s an output transformer this could damage the drive circuit, if it’s an input transformer there is not likely to be any damage, just won’t work!
Sorry this has taken so long…. Have been tied up with new projects.
Regarding using TS connector on a transformer output, if the transformer is wired correctly with the secondary wired between tip and ring, then ATS connection is perfectly OK and just as good as a balanced TRS connection. The problem that you imply is if the transformer has a grounded centre-tap. In that case then the output would be shorted out with a TS connection. That situation is unlikely as nowadays the secondary winding would not have a ground connection.
Yes, you have the answer! I never did like the illumination additions to the AL22 meters!
Nowadays I always use LEDs, the old tungsten lamps were truly awful, they invariably overheated and burned out.
Saying that, my TFPRO meters are fitted with standard tungsten lamps. I run them with a series 220 ohm resistor from the onboard 24V supply, they give adequate and friendly lighting and don’t burn out.
I think I have answered this elsewhere.
I would estimate that we sold about 250 VC1s of different versions. There were not too many of the early ones with transformer inputs, probably only about 20 of the full 2U size. Most were VC1CS types which was very successful.
What is this rubbish doing on my website!!
That’s a nice looking 828 Mk2 and I’m sure it will carry on making people happy!
If you would like to comment on audio equipment then you are welcome, if you want to discuss anything else, please do it elsewhere.
We have made a lot of mixers since we started with the 828 Mk3. Now in 2022 we have added a refinement; it’s another stereo channel but built with a stereo version of the EQ section that is a loved facility on the mono channel.
The new stereo channel is available now and includes the option of direct channel outputs and even a version with stereo aux output.
There is also a new meter circuit available to drive our own version of the PPM developed for the forthcoming PYE compressor.
More recently, getting over the long hot summer (of22) I’m doing more and more development work on interesting ideas in audio compression.
The new 588 compressor started out as a little piece of development towards the new PYE product, the PYE 4061S stereo compressor….. It seems to have developed a life of its own! There is so much hype about products that they say are superior to digital plug-ins; I hesitate to say anything about the 588, I can only repeat what the very first user of a 588 emailed me… he said it was ‘magical’. It’s certainly original and sounds like nothing I have heard before.
I suppose I shall have to keep on making them now.
I never recommend changing capacitors unless there are signs that the cap is faulty, you can usually see the fault by the can swelling up or leaking. The most likely faults are dirt in the pots and in the contacts in that jack connector on the front panel. Try a very small amount of WD40 in the back of the pots and in the contacts of the jack socket.
Sorry for my late reply….. Yes, please return it to me and I will check it out.
Send it to me….
5 Bay Court,
24 The Fairway,
Bognor Regis PO21 4HD
make sure it is marked as defective equipment sent for repair and quote a very low value otherwise the customs people will try to charge me import duty!
Please drop me a note direct to my email ([email protected]) and I will be happy to send what info I have on the old P1.September 28, 2021 at 4:47 pm in reply to: Is this VC1Q legit? (I just got it from online sale, but it’s super light) #30708
If you turn attack and release both to fastest then with a microphone input it’s likely that the odd transient will clip the control circuitry and cause a click through the system. It’s not a fault….. it’s ‘operator error’!
You guessed right! It’s very much an optical circuit. The dynamics of mixed music and speech on TV is highly complex and extremely difficult to apply control to. My circuitry combines some active filtering (which other audio manufacturers try) together with some compression. The result, happily, is that neither is very noticeable, but the dialogue is clearer! One would think that digital control would be easier and better, but there’s more to it than meets the eye (or ear).