Hi,
for stereo you need a pole to switch the signal on each channel. A 2pole will do. That is available as a 6way, allowing 6 different inputs to be selected.
If you decide to also switch the ground lead you need 2poles for each channel. A 4pole 3way will allow switching of both signal and ground for three different sources in stereo.
If you go to 5.1 surround you would need a 6pole 2way just to switch between two sources and still only allow signal switching.
You can use relays to connect the signals and to connect the grounds.
A single pole could control the ground and signal relays on as many channels as you need.
That way you could use a 12way switch to control two pole relays for each of 12 different sources for stereo and by simply adding relays you can control as many channels as you need upto 7.1 if preferred.
for stereo you need a pole to switch the signal on each channel. A 2pole will do. That is available as a 6way, allowing 6 different inputs to be selected.
If you decide to also switch the ground lead you need 2poles for each channel. A 4pole 3way will allow switching of both signal and ground for three different sources in stereo.
If you go to 5.1 surround you would need a 6pole 2way just to switch between two sources and still only allow signal switching.
You can use relays to connect the signals and to connect the grounds.
A single pole could control the ground and signal relays on as many channels as you need.
That way you could use a 12way switch to control two pole relays for each of 12 different sources for stereo and by simply adding relays you can control as many channels as you need upto 7.1 if preferred.
AndrewT said:
is it poor design to switch the ground? my gear uses RCA, not balanced XLR.
i know a lot of RF connectors don't even have a solder pin for ground. but RF and AF are different.
I found this thread as a result of a search. I will be doing something similar to the OP - probably using a 2 pole 5 or 6 throw switch.
But - whats the best way to wire in a tape loop? Can I just use the existing 2 poles, run one pair of wires to the preamp and another set to the tape loop jacks?
Fran
But - whats the best way to wire in a tape loop? Can I just use the existing 2 poles, run one pair of wires to the preamp and another set to the tape loop jacks?
Fran
Anyone for info on a tape loop?
Would anyone even have some links for info on the best way to do it?
Fran
Would anyone even have some links for info on the best way to do it?
Fran
Hi,
tape loop was popular for monitoring the off tape recorded quality.
That practice only works with three head recorders that are able to send a recorded signal from the extra head while it is recording with the first head.
Is that what you need?
I think there is a simple version in ESP.
I like the way Audiolab and a few others did it, with dual selectors for input and tape out.
tape loop was popular for monitoring the off tape recorded quality.
That practice only works with three head recorders that are able to send a recorded signal from the extra head while it is recording with the first head.
Is that what you need?
I think there is a simple version in ESP.
I like the way Audiolab and a few others did it, with dual selectors for input and tape out.
No, sorry not exactly. What I mean is a patch through of the source thats currently selected, but without it passing through the preamp circuit.
God that sounds complicated! What I really need is to select a source. Then pass that through the preamp circuit on to a set of RCA jacks to the power amp. I also want to have another set of RCA jacks that just passes the selected source without it going through the volume pot/circuit etc. I want to feed this on to headphone amp.
I used to - perhaps wrongly - call that a tape loop where you would feed that out to a tape deck....
Fran
God that sounds complicated! What I really need is to select a source. Then pass that through the preamp circuit on to a set of RCA jacks to the power amp. I also want to have another set of RCA jacks that just passes the selected source without it going through the volume pot/circuit etc. I want to feed this on to headphone amp.
I used to - perhaps wrongly - call that a tape loop where you would feed that out to a tape deck....
Fran
Back to Audiolab then.
A selector that sends the source input to the volume pot then through buffer to power amp.
A second selector that taps off the same inputs and sends a tape out via a buffer (or not) to an external volume control or amplifier.
A selector that sends the source input to the volume pot then through buffer to power amp.
A second selector that taps off the same inputs and sends a tape out via a buffer (or not) to an external volume control or amplifier.
almost, take care to not cause a loop with same inputs and outputs selected if you have a tape input connected.woodturner-fran said:
Those manufactured units that do it with two selectors or logic controlled relays will have blanks in some of the switch positions to prevent feedback.
Although using relays, not a rotary switch, here is my solution for dual tape loop. Both tape recorders get the selected source and any one can be monitored. Also tape1-to-tape2 recording works. Hangerõszabályzóhoz = to volume control
http://tube.fw.hu/input1.pdf
http://tube.fw.hu/input2.pdf
The relays can be controlled by a simple rotary switch...
http://tube.fw.hu/input1.pdf
http://tube.fw.hu/input2.pdf
The relays can be controlled by a simple rotary switch...
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