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Distortion on the Clean channel?

My Sons Peavey Blazer 158 amp has developed a fault. On the Clean channel you get significant distortion. All other aspects of the amp are fine. Is there a solution? Can I buy a replacement head for the amp? as it seems to me that the fault lies in the electronics of the head

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SOURCE: Loud distortion on Front Channels

Well, the nice thing about the newer amps is that the actual amp circuitry is all contained in a module and you don't have to do much troubleshooting. Just replace the module for that pair of channels. Bad news of course is the modules can be pricey. Should say right on it the part number, order it from mcminone.com or whoever, solder it in, use new conductive grease (many times I think these modules fail because the grease gets old, the module overheats and toasts) and you should be fixya'd

Posted on Jan 12, 2008

SOURCE: Onkyo TX-SV414PRO - Right channel has no audio, left channel works fine.

get a new receiver

Posted on Feb 10, 2008

  • 4234 Answers

SOURCE: Sound distortion on beomaster 3300

There is a defect in the pre-amp section of the unit. Without seeing it and taking a few measurements, I can't give you any particulars. A rough estimate for a repair wouldbe about $10-$25 in parts plus the local labor rate.

Dan

Posted on Sep 30, 2008

  • 1 Answer

SOURCE: We have a Peavey RQ4332C

Usually this is caused by a cellphone in the area. The cellphones send a signal to the cell tower ever few seconds, when they do that, it makes it sound like the wireless mike is losing its battery, when in fact, it is the cellphone interfering with the signal. A simple test would be to power up the system when you can verify there are no cellphones turned on and try the wireless system. Then turn the cellphone on and repeat the scenario.

Posted on Oct 23, 2009

  • 4234 Answers

SOURCE: Loud distortion through phono inputs

Phono inputs are designed for turntables only. Any other device will provide too high a signal for that input to handle. The phono input has an extra amplification stage built in. The distortion is because of the high suignal level being supplied to the input. The only way to get this to work properly is to purchase an antenuator which will decrease the signal level to the phono level.

Dan

Posted on Dec 18, 2009

  • 2 Answers

SOURCE: Center channel audio distortion and noise

I have similar problem with my Onkyo Tx-SR600. It only happens when it's in surround mode. When switch to Stereo or Direct, the scratchiness go away. Still trying to find a solution to this problem.

Posted on Dec 23, 2009

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1 Answer

Can a power conditioner improve distortion sound on center channel speaker? I have a Pioneer vsx 1020K receiver and I am only having a problem with the center channel. At first I thought the problem was...


First; power conditioner won't do anything for your issue. It's not crosstalk (unless it's a wireless spkr) On your sub are cables mark + & - ? If so make sure they're attached accordingly to back of receiver/amp. Your distortion sounds like a phase issue. I'm also curious how store performed diagnostics?

Mar 07, 2011 | Pioneer VSX1020K Receiver

1 Answer

Hi, this is not really a problem. I have an Onkyo TX-SR604 receiver. I had polkaudio speakers RTi8 speakers that are no longer working properly. I am looking for recommendations for new speakers that can...


A receiver with the specs...

* "90 watts minimum continuous power per channel, 8 ohm loads, 2 channels driven from 20 Hz to 20 kHz, with a maximum total harmonic distortion of 0.08%"

(*) The only acceptable statement of its power bandwidth in the manual.

... when fed an undistorted audio signal, used properly and not driven abto clipping is not particularly dangerous to any reputable speaker.

Driving any amplifier, even a modest one, into high distortion is more dangerous to any speaker than a high-powered amp pumping pure undistorted power.

Choose any speakers but low efficiency models if you want loud and clean sound.

Jun 10, 2010 | Onkyo TX-SR604 Receiver

1 Answer

NAD 7020e sudden volume drops, sudden distortion- intemittently


OK. I dont know the answer to your prob, but to let you konw that youre not in this alone, my amp used to occasionly lose considerable volume in one channel. this could be remedied by cracking the volume up to max for a half second or so. (Not a great solution!!) It has finally given up the ghost ...I have lost one channel and the doctor says it wont come back. Not only this but they claim that spares ceased to be sold back in the 90's. having said this I have enjoyed this amp for almost 20 years. I think its time to put it to pasture.

SNO

Apr 12, 2010 | NAD Audio & Video Receivers

1 Answer

How many total watts does this system have


Well... It consumes 240 watts of electrical power total so take the audio power specifications with a huge grain of salt, as no audio device puts out in audio power anywhere near what it consumes in electrical power. Heat produced is power consumed, too and nothing is 100% efficient.

In the specs below the only information useful for comparison is in the line I highlighted with >>> <<<<'s as it conforms the closest to the industry standard practice of using:

"X watts into 8 ohms (standard load) from 20 - 20000 hz plus or minus Y db at no more than .0Z% distortion"

The better amps specify vanishingly low distortion specs (0.0x% vs 0.x%) at the cost of being able to claim higher wattage. But they guarantee cleaner sound at the claimed levels.

JVC is being tricky with their choice of a 40 hz lower limit. THAT is the power hungry end of the spectrum. 20 hz is normally the lower limit stated.

"Output Power .............At Stereo operation
Front channels .............55 watts per channel, min. RMS, driven into 4 ohms at 1 kHz, with no more than 0.9 % total harmonic distortion. (IEC268-3/DIN) 30 watts per channel, min. RMS, driven into 8 ohms at 1 kHz, with no more than 0.9 % total harmonic distortion. (IEC268-3/DIN)

>>>>> 30 watts per channel, min. RMS, driven into 8 ohms, 40 Hz to 20 kHz, with no more than 0.8 % total harmonic distortion. <<<<<

At Surround operation
Front channels .............50 watts per channel, min. RMS, driven into 8 ohms at 1 kHz, with no more than 0.8 % total harmonic distortion.

Center channel .............50 watts, min. RMS, driven into 8 ohms at 1 kHz, with no more than 0.8 % total harmonic distortion.

Rear channel .................50 watts, min. RMS, driven into 8 ohms at 1kHz, with no more than 0.8 % total harmonic distortion."

Mar 02, 2010 | JVC RX-554V Receiver

1 Answer

I have distortion coming out of my front right channel of my AVR


Yes, sounds like your DSP chip has an issue. Not an inexpensive repair if that's the culpret. Around 400-500 to replace the chip. It's an awesome receiver and worth 300-400 in repair, however, a 3800 or 1800 can be had for 600-800 depending where you look. If you need more help, post a comment and I can help you some more.

Aug 10, 2009 | Yamaha RX-V2600 Receiver

1 Answer

Sound distortion on beomaster 3300


There is a defect in the pre-amp section of the unit. Without seeing it and taking a few measurements, I can't give you any particulars. A rough estimate for a repair wouldbe about $10-$25 in parts plus the local labor rate.

Dan

Sep 30, 2008 | Audio & Video Receivers

1 Answer

Hi there i have bought some peavey pr15 neo speakers last december o7. one of the speakers has lost sound its very faint not even headphone volume. took it back to dealer he says ive over powered it and...


Just because the power ratings are close does not mean that you can't overdrive the speakers. If the amp was at max and you really pushed it, the amp could have generated distortion. It is the distortion that usually causes a speaker to fry. Warranties only cover manufacturing defects. If the speaker looks like it was overdriven, that is not a manufacturing defect. It would be considered customer damage. This is an issue that you should take up with a manager if you feel it is a warranty issue.

Good luck.
Dan

Jul 30, 2008 | Audio & Video Receivers

1 Answer

Loosing sound / distortion


If the sub channel is shutting down, there is a problem with that channel. The unit will shutdown to prevent further damage. This unit will need to see a service bench to determine the defective part(s).
Dan

Mar 17, 2008 | Audio & Video Receivers

1 Answer

Loud distortion on Front Channels


Well, the nice thing about the newer amps is that the actual amp circuitry is all contained in a module and you don't have to do much troubleshooting. Just replace the module for that pair of channels. Bad news of course is the modules can be pricey. Should say right on it the part number, order it from mcminone.com or whoever, solder it in, use new conductive grease (many times I think these modules fail because the grease gets old, the module overheats and toasts) and you should be fixya'd

Jan 12, 2008 | Marantz SR-5200 Receiver

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