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#294771 - 03/02/10 08:03 PM Crackling in Speakers
bagman Offline
frequent flier

Registered: 01/08/07
Posts: 10
My receiver is a 2002 Panasonic SA-ZR45. For the past few years a crackling sound has penetrated the speakers. When I shut the receiver off the crackling gees away. Until recently. Now, the crackling is on all the time and I had to switch to the TV speakers, not too good. What could be the cause of he crackling, and how can it be fixed? Or, should I invest in a new receiver?
Thanks.

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#294783 - 03/02/10 08:50 PM Re: Crackling in Speakers [Re: bagman]
SirQuack Offline
shareholder in the making

Registered: 01/29/04
Posts: 13311
Loc: Iowa
I'm guessing the crackling might not be good for your speakers at louder levels, you've been allowing this for a few years, that would drive me crazy... what speakers are you using?
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#294790 - 03/02/10 09:25 PM Re: Crackling in Speakers [Re: SirQuack]
Adrian Offline
axiomite

Registered: 12/27/08
Posts: 6555
Loc: It's all about the location.
Is it coming from both speakers?
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#294791 - 03/02/10 09:34 PM Re: Crackling in Speakers [Re: Adrian]
bagman Offline
frequent flier

Registered: 01/08/07
Posts: 10
I have 4 M 3s, a center and rear, and a sub (6 Total + sub). It comes from all, starting from the rear and working its way all around, one-by-one.

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#294794 - 03/02/10 09:39 PM Re: Crackling in Speakers [Re: bagman]
Wid Offline
axiomite

Registered: 06/22/03
Posts: 6717
Loc: The Peoples Republic of Il.

Is it all the time or just when you turn it up?
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#294823 - 03/02/10 11:20 PM Re: Crackling in Speakers [Re: Wid]
bagman Offline
frequent flier

Registered: 01/08/07
Posts: 10
It happens now all the time. If fact I've had it off for the past five days.

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#294824 - 03/02/10 11:26 PM Re: Crackling in Speakers [Re: bagman]
pmbuko Offline
shareholder in the making

Registered: 04/02/03
Posts: 16222
Loc: Leesburg, Virginia
Time to get a new receiver, I think, as it's likely not very cost-effective to get your current receiver serviced.
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#294836 - 03/03/10 12:31 AM Re: Crackling in Speakers [Re: bagman]
JohnK Offline
shareholder in the making

Registered: 05/11/02
Posts: 10305
Baggy, a more up-to-date receiver would probably be a good idea, but there's a possibility that this is simply the result of a dirty volume control. With the receiver turned off, run the volume control(if the unit does have a volume knob)rapidly up and down between the min and max settings at least a couple dozen times to see if this helps by cleaning it a bit.
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#294848 - 03/03/10 07:40 AM Re: Crackling in Speakers [Re: JohnK]
Murph Offline
axiomite

Registered: 10/05/06
Posts: 6614
Loc: PEI, Canada
I was thinking that too John. When I went searching for some info on roughly what year digital volume controls became more popular than analogue (prone to crackles,)I found this interesting statement in a short article discussing the pros and cons of both.

"A digital volume control has its own problems. Each 6dB reduction in volume from the maximum setting throws away one bit of resolution. A low volume setting (say, 30dB of attenuation) is equivalent to discarding five bits. If you had true 20-bit resolution in your D/A converter, you'd be listening to 15-bit audio instead of 20-bit. The lower the volume setting, the greater the loss in resolution. "

Anyone with better knowledge care to comment if this is still current and how relevant it is? Here is the link for reference purposes.

Volume Controls
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#294860 - 03/03/10 10:31 AM Re: Crackling in Speakers [Re: Murph]
bagman Offline
frequent flier

Registered: 01/08/07
Posts: 10
John and Murph, Thanks for the tip, unfortunately it did not work. Looks like a new receiver is answer. Not a bad thing. Any recommendations on one with a price point lower than $400?
Again, thank you.

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