Amp overhearing

[ranttz]

Could someone please help me out? I have the following:

Denon 3313 a/v receiver

Zone 1: TV, 7 speakers, sub, no problems

Zone 2: Russound R290DS amp, 90W/channel at 8 ohms, 110W/channel at 4 ohms, 250W channel at 2 ohms if 2 channels bridged
a Modular Speaker Connecting Base Unit EZB-1SC
2 Russound volume controls
each have 2 Klipsch CDT-3650-C II (50W RMS /200Wpeak)
no problems

Zone 3: same Russound amp and connecting block, but 4 volume controls, each have 2 of the same speakers.
This amp overheats and shuts down, sometimes after an hour, sometimes after 12 hours.
also shut down when still cold if I turn the volume above 50
One set of the speakers is significantly louder than the other 3 sets
I've switched the amps and zones and the zone with 8 speakers will shut down whether connected to zone 2 or 3
I've confirmed the volume controls are set correctly for the number and type of speakers
I've contacted Russound, but they don't have an answer
I've tried setting the volume to 'fixed' at 40, but still get overheating and shut down

Any ideas on what would cause the overheating/shutdown and what I could do to correct it?

 

[3db]

Could someone please help me out? I have the following:

Denon 3313 a/v receiver

Zone 1: TV, 7 speakers, sub, no problems

Zone 2: Russound R290DS amp, 90W/channel at 8 ohms, 110W/channel at 4 ohms, 250W channel at 2 ohms if 2 channels bridged
a Modular Speaker Connecting Base Unit EZB-1SC
2 Russound volume controls
each have 2 Klipsch CDT-3650-C II (50W RMS /200Wpeak)
no problems

Zone 3: same Russound amp and connecting block, but 4 volume controls, each have 2 of the same speakers.
This amp overheats and shuts down, sometimes after an hour, sometimes after 12 hours.
also shut down when still cold if I turn the volume above 50
One set of the speakers is significantly louder than the other 3 sets
I've switched the amps and zones and the zone with 8 speakers will shut down whether connected to zone 2 or 3
I've confirmed the volume controls are set correctly for the number and type of speakers
I've contacted Russound, but they don't have an answer
I've tried setting the volume to 'fixed' at 40, but still get overheating and shut down

Any ideas on what would cause the overheating/shutdown and what I could do to correct it?

Have you checked the speaker connections on both sides. You could have a whisker short.

 

[Steve Pitbull Potenziano]

worst case scenario the amp is about to go out.The transformer or psu in it could be the prob.OR you have a over volting problem where its plugged in.the socket may be giving to much juice

 

[WaynePflughaupt]

Are you driving Zone 3 to high volume levels? If so my guess is that you’re overdriving the Zone 3 amp. Sure, the Russound connecting base serves to maintain the proper impedance load on the amp, but there’s no free lunch; the available amplifier power is divided out to all the speakers connected to the amp. In your case, assuming 8-ohm speakers and the 90-watt-per-channel amp, each speaker is getting only 22 watts. If you’re running Zone 3 at substantial levels, that means you’re probably running it wide open. Few consumer amp can do that for any amount of time without shutting down. And honestly, if you're running it 12 hours a day you really should look into commercial-grade equipment that's designed for continuous duty.

Regards,
Wayne A. Pflughaupt

 

[ranttz]

thanks for all replies...

* checked connections, all seems good
* not driving zone 3 to high levels, very low (30 of 98) and it over heats, then shuts down
* I'm just going with what Russound suggested as far as amp needed for speakers. Instead of buying a commercial amp, can I just split the signal from the receiver on a block, then go to 2 amps, then 4 speakers each?

 

[ranttz]

thanks for all replies...


* I'm just going with what Russound suggested as far as amp needed for speakers. ?

I tried to edit above, but was too late...what I mean is that what I installed is what Russound recommended, not that I was going to stay with it

 

[TLS Guy]

thanks for all replies...

* checked connections, all seems good
* not driving zone 3 to high levels, very low (30 of 98) and it over heats, then shuts down
* I'm just going with what Russound suggested as far as amp needed for speakers. Instead of buying a commercial amp, can I just split the signal from the receiver on a block, then go to 2 amps, then 4 speakers each?

Receivers really hate these type of arrangements. Receivers are just not designed for this type of work. Your best solution is a commercial distribution amp driven form the zone pre outs. It will be cheaper in the long run, or you will buy a lot of receivers. Every time that receiver overheats and shuts down you are shortening its like by months. It won't be long before you do it once too often and it shuts down permanently.

 

[WaynePflughaupt]

TLS, it's not the AVR that's shutting down, it's an outboard amplifier driving the secondary-zone speakers that's having the problem.

Instead of buying a commercial amp, can I just split the signal from the receiver on a block, then go to 2 amps, then 4 speakers each?

Yes that will work.

Regards,
Wayne A. Pflughaupt

 

[ranttz]

Could someone please help me out? I have the following:


One set of the speakers is significantly louder than the other 3 sets

update: changed out the volume control that was louder than the others and all is well now.

thanks again to all for the help