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My sub is all of a sudden MUCH louder after turning circuit breaker off than on

post #1 of 13
7/13/11 at 8:37pm
Thread Starter 
A weird thing happened to my sub tonite. I was installing a ceiling fan and had to turn off the circuit breaker (at which point my sub made a boom sound). When I finished installing the ceiling fan, I turned the circuit breaker back on (my sub made a boom sound again) and began to watch some tv. My sub all of a sudden was MUCH MUCH louder than before. Anyone have any idea why this would happen? Do i need to re-calibrate my sub or should i wait a couple of days and hope the problem dissipates? I've tried other sources such as my blu ray player and boxee, and the problem still persists. I check all the settings on my receiver and even the position of the volume knob on the back of the sub and everything and nothing has changed. Help! Thanks.
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post #2 of 13
7/13/11 at 10:10pm
Quote:
Originally Posted by russellmania79 View Post

My sub all of a sudden was MUCH MUCH louder than before...... I've tried other sources such as my blu ray player and boxee, and the problem still persists.

So...... your sub is now "Much Much" louder? And this is a "problem"?

Some folks fork over a few grand to have this "problem"!

Thank those gremlins when you see them!
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post #3 of 13
7/14/11 at 6:39am
Thread Starter 
Quote:
Originally Posted by DigsMovies View Post

So...... your sub is now "Much Much" louder? And this is a "problem"?

Some folks fork over a few grand to have this "problem"!

Thank those gremlins when you see them!

lol... Well it's so loud now that it's volume level is out of proportion with the rest of my speakers. Even at a moderate volume level, it clips. The sub now is so overwhelming I'm going to have to re-calibrate it at some point to get it to match the volume level of my other speakers. I'm just waiting a day or two to do so incase my sub has an "extra charge" or whatever from when i fooled around with the circuit breaker. Hopefully the "extra charge" subsides and i don't have to go through re-calibration.
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post #4 of 13
7/14/11 at 7:45am
I have to ask what sub and AVR are you running? What are the settings for sub volume and LFE on the AVR? Are you using a sub eq? What is the gain set on the sub amp? Do you have either sub or AVR connected to a power conditioner? How old is the circuit breaker, wiring and electrical outlets in the home? Sorry for all the questions,maybe someone can chime in here.
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post #5 of 13
7/14/11 at 8:36am
Quote:
Originally Posted by HTFanboi1200 View Post

I have to ask what sub and AVR are you running? What are the settings for sub volume and LFE on the AVR? Are you using a sub eq? What is the gain set on the sub amp? Do you have either sub or AVR connected to a power conditioner? How old is the circuit breaker, wiring and electrical outlets in the home? Sorry for all the questions,maybe someone can chime in here.


Very good suggestion. The more info the better. If you still have a problem after all is said and done, and you really want to get to the bottom of this, I suggest you recruit the services of this guy:



Inspector Clouseau


Ian
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post #6 of 13
7/14/11 at 8:38am
Thread Starter 
Quote:
Originally Posted by HTFanboi1200 View Post

I have to ask what sub and AVR are you running? What are the settings for sub volume and LFE on the AVR? Are you using a sub eq? What is the gain set on the sub amp? Do you have either sub or AVR connected to a power conditioner? How old is the circuit breaker, wiring and electrical outlets in the home? Sorry for all the questions,maybe someone can chime in here.

I have a Definitive Technology Prosub 80 and a Sony STR-DH800 AVR. The volume knob on the sub is at the 3 o'clock position and on the receiver the sub level is set to -1 (this gave me a level roughly the same as the rest of my speakers). There is no LFE tweak on my receiver, just "SUBWOOFER" level. I'm not using an equalizer and neither the sub or receiver is connected to a power conditioner. Not sure how old the circuit breaker is, but the apartment i'm living in is about 40-50 years old.
Is it possible that after i installed the ceiling fan (which is on the same circuit as all my home theater equipment) that some how more power is running to the sub which is affecting its volume? As i mentioned, the volume knob/level on the sub is set to the 3 o'clock position which seems a bit high to me to me. Maybe now its getting the proper supply of electricity somehow? I don't know anything about electricity so i'm just taking a wild guess.
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post #7 of 13
7/14/11 at 8:39am
Thread Starter 
Quote:
Originally Posted by mailiang View Post

Very good suggestion. The more info the better. If you still have a problem after all is said and done, and you really want to get to the bottom of this, I suggest you recruit the services of this guy:



Inspector Clouseau


Ian

lol!
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post #8 of 13
7/14/11 at 9:25am
Quote:
Originally Posted by russellmania79 View Post

lol!

Go back thru the bassics of setting up your speakers and subwoofer and use a spl meter. Go here for some good info on how to do this http://www.avsforum.com/avs-vb/showthread.php?t=824554 and halfway down the page you will find the section on subwoofers. Here is a quick way to setup the subwoofer http://www.avsforum.com/avs-vb/showt...&#post10397679.
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post #9 of 13
7/14/11 at 9:36am
You have the volume set to 3 oclock? Maybe you weren't getting enough power to the amp before. 3 oclock is pretty high.
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post #10 of 13
7/14/11 at 9:41am
He needs to set the sub gain to 10 or 10:30 and rerun the reciever setup. Then he can adjust the reciever sub channel with a spl meter so that it reads 74 to 74 db.
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post #11 of 13
7/14/11 at 11:59am
Agree with the others here about the sub gain being too high at 3 o'clock. Go with what Bill mentioned about setting sub's gain at 10:30 to 11 o'clock and re-running AVR setup.. I would think the highest you'd ever want to turn the sub up would be 1 o' clock and no more,lol. One more thing I forgot to run past ya, try checking your outlets in the room with a LED electrical recepticle wall plug tester. These are usually about 8 - 10 bucks and can test for proper ground,polarity. If you have a multimeter you could check to make sure you have proper AC voltage.Since you're in an apartment you may come across some wacked circuitry.
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post #12 of 13
7/14/11 at 12:44pm
Thread Starter 
Thanks for all the responses. I'm just going to lower the volume knob on my sub and re-calibrate. Just out of curiosity, why shouldn't the volume knob be set beyond the 1 o'clock position?
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post #13 of 13
7/14/11 at 1:15pm
Honestly Russell, as a young boy I was taught that turning the volume potentiometer past the 1 o'clock position usually introduces more and more distortion to the signal making it sound like crap,lol. I've always kinda stuck with that when using any piece of gear whether it's a transistor radio,bass guitar amp(although some like to go to 11),hi-fi receiver,AVR, etc... As for gains on something like power amp(like my parasound,) these can be cranked full on, since the preamp is using the volume pot. to control the signal to the amp. I have a feeling your sub will sound better at 11 0'clock and run much cooler too.
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