Title says most of it.

I have a TON of SPDIF sources, and only ONE coaxial SPDIF input on my receiver, I don't want yet ANOTHER switcher just for SPDIF, so I was wondering if I could route it through either the R or L of the NEC ISS ?

If so, does anyone know which side ? Or do I need a Y adapter for each to put it through both ?

Thanks in advance....

PS: If the NEC ISS won't work, any suggestions to simply route 5 coax SPDIF's easily to one input on my receiver ???

I'm pretty sure it will easily carry the bandwidth of SPDIF. You will only need to connect 1 or the other (L or R).

Try it, but I don't think it will.

It only has enough bandwidth for 20khz audio, not 48khz SPDIF.

Well, I tried it, and didn't get any response from my DD receiver...

What if I use a Y connector to utilize both L/R ? Would that double my bandwidth ? Get me close enough for it to work ?

Any suggestions for a cheap alternative if this just won't work ?

My mistake... I thought I had read that they used the same switching components for the audio as they did for the video.

If you could switch to composit sync (RGBs) that would free up one of the video pathways to use for audio.

[blind supposition]
Any of the lines (audio or video) may have a gain amp in line, which should interfere with SPDIF to no end.
[/blind supposition]

I looked at exactly this, for the same reason, until I upgraded my receiver. My old Barco RCVDS worked to switch SPDIF (IIRC, was only a broef experiment) but the ISS did not.
You'll probably have to bypass any potentiometers or ICs in the audio signal path (and just allow the audio relays to switch in the SPDIF) on all the input cards and the output card(s.)
I even bought the service manual PDF in the hopes of doing this, but eventually got my nice new receiver.

These four files should be enough to experiment... IF the switching ICs do not hurt the signals too much (these are ICs apparently, not relays.)

Good luck, and share your results if youo do decide to play. I may need to do this myself on my little set upstairs ;)

[blind supposition]
Any of the lines (audio or video) may have a gain amp in line, which should interfere with SPDIF to no end.
[/blind supposition]

I looked at exactly this, for the same reason, until I upgraded my receiver. My old Barco RCVDS worked to switch SPDIF (IIRC, was only a broef experiment) but the ISS did not.
You'll probably have to bypass any potentiometers or ICs in the audio signal path (and just allow the audio relays to switch in the SPDIF) on all the input cards and the output card(s.)
I even bought the service manual PDF in the hopes of doing this, but eventually got my nice new receiver.

You mention the RCVDS switcher too, I happen to use an RCVDS 05 to switch my component sources, with two outputs, one to my Petr transcoder(which is the only transcoder I've ever owned which could catch the synch of EVERY component source I've had) and one output to my Crescendo transcoder with gamma correction.

The RCVDS 05 has plenty of audio in/outs, but it doesn't seem to pass SPDIF either, how did you get it to work for this purpose, even briefly ?

Don't know about the '05, but on the RCVDS800 I pulled the audio potentiometers and jumpered the signal path straight thru to the inputs of the relays (the '800 has relays for audio, not ICs...) and I believe I was successful.
I just pulled two boards from the 800 (a Video/Svideo and an RGBHV) and I can see my handywork...

What I did to reverse the 800 (in the absence of schematics) was just follow the traces... it helps that the boards are all two-layer. Pot in the way... pull it and jumper around it. ICs (rather than relays) will make it a LOT more difficult.
Same goes with the output card(s...) Just follow the pin from the backplane and trace to the output connector.
Does the '05 have Audio Mute and buffers like the ISS?

Ahhhhhh....ok...

I didn't realize you had modified the equipment to use it for spdif pass through. That is beyond my capabilities. I guess I'll look for yet ANOTHER switcher...