[USBLUES]

I just purchased a Sherwood RX-5502, the complete setup is:

3 pairs of 8 ohm speakers hooked up to 3 of the 4 speaker terminals on the back. Also there are 3 Russound LPT-x Volume controls for each pair of speakers. On B & C I each have a pair of speakers(4 total) with thefollowing specs: Specifications: Power handling: 30 watts RMS/45 watts max Impedance: 8 ohms Frequency response: 60-20,000 Hz SPL: 89 dB 1W/1m. On A I have a single pair of speakers with the following specs: Specifications: Power handling: 75 watts RMS/125 watts max Impedance: 8 ohms Frequency response: 55-20,000 Hz Sensitivity: 89 dB 1W/1m . When I play B & C together everything is fine and the RX-5502 runs cool and doesn't go into protection and I get good volume. When I turn on A the RX-5502 starts to get hot and goes into protection. It doesn't matter if A B & C are on or just A the unit gets hot and turns off. Are the speakers on A too much for this system or am I missing some impedance matching?

 

[rnatalli]

Make sure the speaker wire is not causing a short of some kind.

 

[jdsmoothie]

Likely an issue with the A speakers only ... check to make sure speaker wire not touching another post. Also try moving A speakers to the D speaker posts to test.

 

[USBLUES]

Thansk very much for th replies, I'm pretty sure the speaker wires aren't touching a post, becasue i;ve re-seated them all a bunch of times, also i shoudl have said that its not immediately shutting off, it only gets hot when i put the main Volume on 55-60 and turn alls the VC's to max, then it starts pouring heat and smells like burning plastic, then after a while of that it will go into protection. i turn everything up because its so dam quiet at mid volume, not good enough for me. my problem is undrstanding exactley how this amp works. I thought i bought 4 amps in one when really this is a 2 channel amp with 4 posts. i think......lets say i wanted to use the VC's to match the impedance, would i hook everything up to one set of terminals, or would i want to bridge the connections? Also with the 4 sets of terminals which ones are the actual A & B, is it A & B, or is it A & C, with B & D as the "extra" ones that are only switchable?

 

[jdsmoothie]

Looking at the manual, it seems the A+B and C+D are connected in parallel as the manual suggests using 16Ω speakers when using A+B or C+D. I would think if you set the VCs connected to the A+B properly so the 5502 sees an 8Ω load you should be fine. There should be no issue with the lone set on the C posts.

 

[USBLUES]

Why is this thing getting so hot, is that normal?

 

[jdsmoothie]

Likely yes as the amp sees (4) 4Ω speakers and the load is too much at higher volumes, although not sure why you're having the issue with only the A speakers set to ON, unless there is an issue with the B speaker VC. Although your issue will likely go away once you have the A+B VC's correctly set for 2 pairs of speakers.

 

[USBLUES]

Just wanted to send an update. I set up the big pair of speakers on A set to 1x on the Russound VC. the two other sets are set up as 2x on the VC on SPkr terms C & D, it works at about 50 or 52 anything higher than that we get some heat. I think that has to do with the tiny tiny spkers i bought, should have went with 8 inchers, anywho I bought a Pyle hybrid amp

P3201ATU to beef up the system.