Receiver/speaker issues
Developed an issue here, trying to diagnose it properly. I think I'm experiencing some clipping but not 100% sure.
Watching Evil Dead II the other night, moderately loud. In the THX remastered DVD they've got some pretty badass surround sound effects going on. During one of the louder rear effects there was a very sharp and painful crackle as the sound began (R rear speaker). I think it happened twice, didn't notice anything else until I was playing with test tones and it sounded like the opposite rear speaker tweater was not working, after playing around a little the test tone returned to normal sound and I verified the tweeter was indeed working. I had the receiver around 40% volume, DD5.1, fronts set to large, rear/center to small, center at +1, rears at +2.
Then today while watching a movie off cable, I noticed the same sharp crackle during a loud rear sound effect from the left rear speaker. It was reproducible from that part of the material when replayed. I then noticed that the bass boost was accidentally on, volume 33%, digital sound processing activated to simulate surround sound, center at +1, rears at +2. After finishing the movie I replayed the seen with bass boost off, and volume down a hair, no crackle was produced.
I've never experienced this sound issue before and am running new speakers (2 mo old), have had my receiver go into protect mode in the remote past a couple of times when running it hot and loud in college about 8 years back. I think that is a known issue with this receiver.
My system is an 10yo Sony DB830 rated at 100w x5 at 0.09% distortion. Running new Polk Monitor 5s0 in front, CS1 center, Monitor 30 rears. Acoustic Research PS112s sub. The speakers are 89db sensitivity so not terrible. I hooked the rear 30s up as mains and cranked some 2 channel stereo, sounded very good, crisp and clean.
I have now set all speakers to small to try and reduce strain on the amp, don't intend to use the receiver EQ or bass boost, but do want to use 5.1/surround sound and fairly loud levels. Looking to make sure that I know what the problem is and to hopefully find a solution. Thanks.
Watching Evil Dead II the other night, moderately loud. In the THX remastered DVD they've got some pretty badass surround sound effects going on. During one of the louder rear effects there was a very sharp and painful crackle as the sound began (R rear speaker). I think it happened twice, didn't notice anything else until I was playing with test tones and it sounded like the opposite rear speaker tweater was not working, after playing around a little the test tone returned to normal sound and I verified the tweeter was indeed working. I had the receiver around 40% volume, DD5.1, fronts set to large, rear/center to small, center at +1, rears at +2.
Then today while watching a movie off cable, I noticed the same sharp crackle during a loud rear sound effect from the left rear speaker. It was reproducible from that part of the material when replayed. I then noticed that the bass boost was accidentally on, volume 33%, digital sound processing activated to simulate surround sound, center at +1, rears at +2. After finishing the movie I replayed the seen with bass boost off, and volume down a hair, no crackle was produced.
I've never experienced this sound issue before and am running new speakers (2 mo old), have had my receiver go into protect mode in the remote past a couple of times when running it hot and loud in college about 8 years back. I think that is a known issue with this receiver.
My system is an 10yo Sony DB830 rated at 100w x5 at 0.09% distortion. Running new Polk Monitor 5s0 in front, CS1 center, Monitor 30 rears. Acoustic Research PS112s sub. The speakers are 89db sensitivity so not terrible. I hooked the rear 30s up as mains and cranked some 2 channel stereo, sounded very good, crisp and clean.
I have now set all speakers to small to try and reduce strain on the amp, don't intend to use the receiver EQ or bass boost, but do want to use 5.1/surround sound and fairly loud levels. Looking to make sure that I know what the problem is and to hopefully find a solution. Thanks.
Post edited by ed126 on
Comments
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Was it really necessary to double post this? Let's keep it to one thread please.
And on that note -
Your receiver is getting kind of old. The DB line was discontinued some time ago - it was mediocre at best. Chances are the output stage is going bad for those channels. The best thing to do is probably replace the unit with something new. Pioneer Elite, Denon, Onkyo, etc.
I went from a Sony ES 555 to a new Pioneer unit and love it. I had the same sub as you for a while, but just got rid of it, the bass was extremely muddy as it's slot loaded, and severely underpowered.Main Surround -
Epson 8350 Projector/ Elite Screens 120" / Pioneer Elite SC-35 / Sunfire Signature / Focal Chorus 716s / Focal Chorus CC / Polk MC80 / Polk PSW150 sub
Bedroom - Sharp Aquos 70" 650 / Pioneer SC-1222k / Polk RT-55 / Polk CS-250
Den - Rotel RSP-1068 / Threshold CAS-2 / Boston VR-M60 / BDP-05FD
