Sony receiver volume drops? - AVS Forum
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post #1 of 14 Old 05-20-2008, 07:52 AM - Thread Starter
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I have a sony receiver (str995 maybe?) connected to 7.1 speakers. Most are B&W ceiling speakers (surrounds), the L and R are wall speakers. And there is a klipsch subwoofer.

Sometimes i hear the volume all of a sudden drop off by about 30-50% and then it comes back up to the normal volume when watching TV/movies.

Any ideas on what is causing this?

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post #2 of 14 Old 05-22-2008, 07:59 AM
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it is caused by underpowered amplification section off the Sony receiver. Most likely you are trying to drive it past its capability.

Sony receivers are notoriously overstating their rating. They do not deliver anywhere near the 100 w/ch claimed. They only deliver ~35 w/ch in 7 channel mode.

You need to start looking at replacing the Sony toy, with a more capable receiver, like Yaamaha, HK, Dennon, Onkyo ...
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post #3 of 14 Old 05-22-2008, 08:04 AM
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I'd try to at least try to verify it's not a source issue. Does it do it on all sources including the radio tuner?
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post #4 of 14 Old 05-22-2008, 09:02 AM - Thread Starter
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Well i only use it for Cable tv (optical) so it could be the source. But i have surmised for awhile that it is probably simply underpowered. I have noticed it many times while watching TV (or recorded TV).

Epson 6020UB Projector
Dalite Contour HighPower Manual Pull Down
Denon AVR3311CI
Sony PS3
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post #5 of 14 Old 05-22-2008, 09:20 AM
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How big is your room? All three dimensions please?

I'm hard on amp sections because I like it loud and dynamic. For most people an AVR like the Sony would probably be OK, but if it's a big room? Probably not.
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post #6 of 14 Old 05-22-2008, 10:23 AM - Thread Starter
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Room is probably 15' x 25'. I will monkey with some settings, etc.

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post #7 of 14 Old 05-22-2008, 10:51 AM
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Are the B&W's 4 ohms? That woudl also be a little to much for the Sony in all honesty. 8 ohm speakers would be much gentler so to speak.
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post #8 of 14 Old 05-22-2008, 11:45 AM - Thread Starter
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They are 8ohm - (4ohm minimum).

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post #9 of 14 Old 05-22-2008, 11:55 AM
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Quote:
Originally Posted by Dionyz View Post

it is caused by underpowered amplification section off the Sony receiver. Most likely you are trying to drive it past its capability.

Sony receivers are notoriously overstating their rating. They do not deliver anywhere near the 100 w/ch claimed. They only deliver ~35 w/ch in 7 channel mode.

You need to start looking at replacing the Sony toy, with a more capable receiver, like Yaamaha, HK, Dennon, Onkyo ...

hahahaha, stop being a lemming.
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post #10 of 14 Old 05-22-2008, 12:08 PM
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Quote:
Originally Posted by Goatse View Post

hahahaha, stop being a lemming.

Stop being in denial. Check the reviews for proof positive.

However, you seem to be part of the Sony crowd for whom "Ignorance is bliss"

So be happy with your HTIB amplifier repackaged to look like a receiver
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post #11 of 14 Old 05-22-2008, 12:40 PM - Thread Starter
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I dont understand these last two posts....am i missing something? i actually like Sony and own a huge amount of Sony gear going back to the very first walkman.

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post #12 of 14 Old 05-22-2008, 12:43 PM
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Quote:
Originally Posted by windrockwater View Post

I dont understand these last two posts....am i missing something? i actually like Sony and own a huge amount of Sony gear going back to the very first walkman.

Fanboys/viral marketers, take your pick. I don't think any forum on this whole site is immune nowadays...
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post #13 of 14 Old 05-22-2008, 01:33 PM
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They actually state 8ohm - 4 ohms min. on the speaker specs?


These may be difficult for your Sony. I'd set the cross to the sub higher if at all possible.
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post #14 of 14 Old 05-22-2008, 03:03 PM
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Quote:
Originally Posted by windrockwater View Post

I dont understand these last two posts....am i missing something? i actually like Sony and own a huge amount of Sony gear going back to the very first walkman.

Most people on here like Sony's products, like their tv's and blu-ray players for instance. Just not their audio because some people say they're underpowered.

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