sub cutting out after ten or so minutes

[Swuzzlebubble]

Hi

I found a topic in the "amps" forum but thought I'd also ask here in sub forum.

Background:

Sub cuts out after certain period say 10 mins regardless of whether it is thumping away or not even connected. LED goes red.

If I disconnect the cables and reconnect it fires straight up again. I want the sub volume down when doing this or I get bit of sound burst/pop when the RCA connects reconnect.
I have 'sw mode' set to small speakers to maximize signal to sub.
The sub has no 'auto' switch (but seems to behave like it does in cutting out)

I'm wondering if it could be some sort of compatabilty issue b/w receiver & sub?
Or compatabilty b/w the 'input' mode from disk player ("digital") v the receiver needs for sending 5.1 sound which in the manual seems dependant on getting "multi channel input"?
Disk player manual suggests "multi channel output" is via the digital out and the receiver needs a digital decoder to handle it.


Either way I certainly get something to the sub and it thumps away until it decides to shut off.

Can a sub produce output whilst not technically getting the signal (messaage?) it needs to remain active?

Could cable quality be the issue? I have the cheapest 1:2 RCA I could find at local electonics store. Connected to sub pre-out of amp. If this is the issue why does a simple unplug/replug get it going again?

 

[Swuzzlebubble]

Actually after it cuts off, it comes back on (green light etc) when I pull out the RCA cables.
(not when I plug them back in as said above)

Could it be some build up of static or heat in the cables?
Heat doesn't seem right as I get another 15mins out of it when cables are reconnected.

But then if I don't reconnect the cables at all it goes off after the same time anyway (which might be normal?)

hmmmmm