Crackling in Speakers
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Joined: Jan 2007
Posts: 10
frequent flier
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OP
frequent flier
Joined: Jan 2007
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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Re: Crackling in Speakers
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Joined: Jan 2004
Posts: 13,840 Likes: 13
shareholder in the making
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shareholder in the making
Joined: Jan 2004
Posts: 13,840 Likes: 13 |
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?
M80s VP180 4xM22ow 4xM3ic EP600 2xEP350 AnthemAVM60 Outlaw7700 EmoA500 Epson5040UB FluanceRT85
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Re: Crackling in Speakers
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Joined: Dec 2008
Posts: 6,928
axiomite
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axiomite
Joined: Dec 2008
Posts: 6,928 |
Is it coming from both speakers?
Half of communication is listening. You can't listen with your mouth.
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Re: Crackling in Speakers
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Joined: Jan 2007
Posts: 10
frequent flier
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OP
frequent flier
Joined: Jan 2007
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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Re: Crackling in Speakers
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Joined: Jun 2003
Posts: 6,833
axiomite
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axiomite
Joined: Jun 2003
Posts: 6,833 |
Is it all the time or just when you turn it up?
Rick
"A fear of weapons is a sign of retarded sexual and emotional maturity." Sigmund Freud
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Re: Crackling in Speakers
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Joined: Jan 2007
Posts: 10
frequent flier
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OP
frequent flier
Joined: Jan 2007
Posts: 10 |
It happens now all the time. If fact I've had it off for the past five days.
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Re: Crackling in Speakers
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Joined: Apr 2003
Posts: 16,441
shareholder in the making
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shareholder in the making
Joined: Apr 2003
Posts: 16,441 |
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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Re: Crackling in Speakers
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Joined: May 2002
Posts: 10,654
shareholder in the making
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shareholder in the making
Joined: May 2002
Posts: 10,654 |
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.
-----------------------------------
Enjoy the music, not the equipment.
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Re: Crackling in Speakers
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Joined: Oct 2006
Posts: 6,955
axiomite
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axiomite
Joined: Oct 2006
Posts: 6,955 |
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
With great power comes Awesome irresponsibility.
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Re: Crackling in Speakers
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Joined: Jan 2007
Posts: 10
frequent flier
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OP
frequent flier
Joined: Jan 2007
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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Re: Crackling in Speakers
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Joined: Apr 2003
Posts: 16,441
shareholder in the making
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shareholder in the making
Joined: Apr 2003
Posts: 16,441 |
This Onkyo TX-SR507 5.1-channel receiver is $249.99 from Accessories4Less, a reputable store.
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Re: Crackling in Speakers
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Joined: Aug 2009
Posts: 6,015
axiomite
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axiomite
Joined: Aug 2009
Posts: 6,015 |
Here's another choice. I bought this Pioneer VSX-819H-K 5.1 receiver for my Son and he's satisfied with it. It's $305.99 from Best Buy.
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Re: Crackling in Speakers
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
The new '20 series receivers from Pioneer will be hitting soon. While I bagged the '19s the new models look to be back in the game. May want to wait around for them to start showing up at your favorite store.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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Re: Crackling in Speakers
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Joined: Oct 2006
Posts: 6,955
axiomite
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axiomite
Joined: Oct 2006
Posts: 6,955 |
Youre welcome but don't take the quote I posted too seriously. That was more of a question than a helpful tidbit.
I shared it because it didn't make a lot of sense to me. Of course, I realize it said "equivalent of effecting the bit rate....", and didn't say it's really directly changing the bit rate as that would be a mess, so I'm curious to understand how that works, if it's true.
I also apologize for a possible derail but so far no one is biting so you are probably safe.
I do now agree you most likely need a new receiver. Unless you have a knowledgeable buddy with access to schematics and time to spare, I'm sure you would cost as much to repair as it would to buy a decent new one.
Last edited by Murph; 03/03/10 04:55 PM. Reason: clarity
With great power comes Awesome irresponsibility.
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Re: Crackling in Speakers
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Joined: Feb 2009
Posts: 3,466
connoisseur
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connoisseur
Joined: Feb 2009
Posts: 3,466 |
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 That article misses the most common type of volume control in use these days. It isn't digital, but a digitally controlled, stepped resistance, integrated circuit. Basically the line-level signal is fed through an IC. Another set of pins on the chip select how much attenuation is applied, and a lower amplitude analog signal is passed to the output pins. Not as "pure" as a true potentiometer, but no crackles, and no loss of dynamic range. That said, it's possible to design a very high quality digital volume control which behaves more like an analog control rather just bit shifting. Windows Vista/7 actually has one implemented as its main level control.
Pioneer PDP-5020FD, Marantz SR6011 Axiom M5HP, VP160HP, QS8 Sony PS4, surround backs -Chris
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