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I have a Skytec pro 480 amplifier, after a short period of use the music produced looses all the bass & only the tweeters on the speakers produce any sound. This happens intermitently. I would appreciate any help

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SOURCE: crackling sound through speakers while watching dvd movie

Yamaha Rx-V361 Firmware Upgrade, A/V-Receiver/-Verstärker - HIFI-FORUM

Posted on Jun 18, 2008

SOURCE: Pioneer SX1980 Stereo Receiver/Amplifier. It

Hello there;
This might be painfully obvious but to be on the safe side check to see if the jumper pins are in the 'Main Out / Pre-In' jacks. If there is no jumper pins you found your problem. Second option, after turning on unit in a QUIET environment with the volume at the lowest setting do you hear a click coming from the inside? If yes, this is good. If no, you have problems.
give the guys at Innovative audio a call. They are the best place for vintage audio on the planet.
www.iavscanada.com
Good luck!

Posted on Jun 19, 2008

  • 6 Answers

SOURCE: can't get audio from HD TV to run through Yamaha receiver speaker

be more specific!...how is the tv hooked up? hdmi, component, straight to the tv, or into the amp then tv?....what audio out? optical, digital? also what are you trying to view? local programming? cable/sat? dvd? your best bet is to ignore video on the amp and go straight to tv. can't help u more until i have more specifics.

Posted on Jan 23, 2009

  • 2 Answers

SOURCE: Technics su z2 amp shuts off sound

hello. we cant help if we dont know what music source you are using.

Posted on Sep 01, 2012

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My B&K AVR 202 will not come out of standby.


hi,

Check the speakers first. Remove all the speakers from the amplifier and switch ON the amplifier. If the amplifier switch ON from standby without any trouble then any one of the speaker is damged or the wiring to the speaker have some problem. . if it doesn't switch ON from standby there is internal hardware faulty.
IF so Please take it any good electronic reparing shope near you. Becuase you hve to check the voltages at all the outputs of the amplifiers. In this amplifier user can't do any thing. To work wit this amplifer need a throuh knowledge in electronics. If you do someting wrong the amp will became irreparable, because its amplifier stage work in high ampere power supply.
OK

Sep 19, 2011 | B&K AVR-202

1 Answer

WHEN MY STEREO TUNER AMPLIFIER SA EH-60 IS TURNED ON IT APEARS F 61 ON THE SCREEN AND IT DOES NOT WORK.


F61 usually means the amp has detected a short or a severe microprocessor error.


Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on; or it may turn on but produce no audio to the speakers.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'nekkid'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

Sep 12, 2011 | Technics Audio & Video Receivers

1 Answer

I bought a pair of Mordaunt Short Qviano 1 speakers from Richer Sounds 18 months ago and now find that the tweeter in both units has failed. The amplifier I am using is rated at 70 watts which is within...


Specs refer to UNdistorted sound. Send square waves to any speaker and it will die eventually, perhaps even the amp.

You are more likely to blow up speakers with an under-powered amp pushed to hard than a monster amp running well within its capacity. Distortion percentages rise vertically once the amp's useful range is exceeded. Tweeters are usually the first casualties.

It's tweeter hunting time.

http://www.mordauntshort.com/support.php

http://www.mordauntshort.com/assets/documents/Aviano2TechSpecs.pdf

Aug 10, 2011 | Audio & Video Receivers

1 Answer

I have a tx-sr601 onkyo reciever and it has lost all abilty to produce sound randomly. how should i resolve the issue?


Randomly lost the the ability to produce sound is what you mean. It already does produce sound randomly.

You don't mention any conditions common to the onset or say if it cicks prior to going silent, which would indicate an activation of the self-protection circuit.

Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.

Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.

You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.

If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.

If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.

Check for loose speaker connections at the speaker as another possible root cause for intermittent shutdown.

Jul 19, 2011 | Onkyo TX-SR601 Receiver

1 Answer

My bass part of the pro 150 is working but not the tweeter part...whats gone wrong the diaphragm looks goog so im confused are there fuses in them for seperate tweeter bass etc..thanks hope you can...


Tweeters blow pretty easily. Access the back of the tweeter and touch a weak battery across it's leads. It should click if the coil isn't fried open or shorted.

May 16, 2011 | Audio & Video Receivers

1 Answer

Do i need subwoofer with power or without power and how to make subwoofer sound on ??? just send me simple setup please ? cheers


Depends on your source and its amplifer complement. Some can drive a subwoofer directly while others just produce a Line Level subwoofedr output for use by a separate amp feeding a subwoofer or self-amplified sub.

The setting up of the source to produce a subwoofer output is totally dependent on its design. Generally, you have to 1) tell it you have a sub, 2) define how bass will be routed or shared among your various speakers accordingto their bass-handling capacities, 3) using test tones, set the relative ludness and crossover settings so you have a uniform sound field.

Name the electronics and get a better answer. Or refer to its manual.

Feb 11, 2011 | Audio & Video Receivers

1 Answer

I was doing a party iconnect the mic to mixer, they star to talk paralell with music and blow the upper part of speakers, they sound but not any treble


Hi,
What happened is that the tweeter is blown. or a fuse in the speaker that goes to the tweeter has blown. Hopefully that is it.
There are several causes. Here is the theory so you understand how to match an amplifier to a speaker system.
Tweeters have a much lower capacity for amplifier power then woofers do. All professional speakers as well as home speakers reflect this.
You may ask exactly what blew the tweeter?
Usually what destroys the tweeter is not amplifier power but distortion. If someone is overloading the microphone, or the microphone is not trimmed to the mixer. You get distortion. This distortion is what caused the tweeter to blow. The signal must be clean. If you put too much power in, it may survive OK but if you put distortion in, it will more likely blow.
It is no shame for this to happen. I have had it happen to me when mixing a live show. You just have to watch what is happening and not turn things up too loud so the mixer or the amplifier distorts.
Also when doing sound work, the ears of an engineer naturally lower the perception of loudness. Engineers often keep turning up the equipment up more and more during a performance because they have lost the perception of loudness that was there when they started. That is also the reason that many professional studio musicians and drummers loose much of their hearing at an early age.
Hope this helps,
Happy New Year,
Mark

Jan 02, 2011 | Audio & Video Receivers

1 Answer

Onkyo tx-sr601 bi wire with zone 2


SMCCARTY,
The idea behind bi-wiring speakers is to get the highest quality of sound by getting the sound from two separate sources doing separate jobs. Lower frequencies are harder for an amplifier to produce than higher frequencies. So it is common to give these frequencies to two different amplifiers so each can produce the highest quality of sound. By removing the low end from the top end amplifier, it provides the top end amp more headroom thus reducing the chances of clipping. Clipping can easily be heard from the tweeters destoying not only the sound but your speakers as well. It is common practice in pro and car audio to use separate amps for subbass, low, mid and high; four amps working together to their corresponding drivers (more or less depending on the system and type of audio being produced).

In your case, getting the two different sources from basically the same amp (power supply), would not accomplish the full intent of bi-wiring; it would just make more wiring for the same end result. However still a good thought on your end. Onkyo receivers are great because of their beefy power supplies. Not very many other brands have such strong power supplies. Denon's are close but not equal.
Chris-

Feb 14, 2010 | Onkyo TX-SR601 Receiver

1 Answer

My Kenwood amplifier is having problems, whenever i turn it on. all seems well until i play some music through it, after 30seconds to a minute the music will cut off and a distinct click is sometimes...


Your amp is going into protection. The click you hear is a relay meant to protect your speakers and stereo. Check your speakers with an ohm meter for the the proper ohms ( listed on the speaker ) and physically try to push each woofer and midrange cone in gently to make sure it moves and is not stuck or frozen in place. A speaker may read correctly on an ohm meter if the woofer is ok but if the tweeter or midrange is not working it will cause the amp to go into protection mode. When you play music stick your ear up to each tweeter\midrange\woofer to ensure they are working.
Your stereo could also be the culprit although usually if it plays music it is ok as long as you are not hearing loud pops. Loud pops are voltage spikes that indicate that a transistor\IC is breaking down and will eventually short. Good luck!

barneyluc

Oct 01, 2008 | Audio & Video Receivers

1 Answer

JUST MY TWEETER IS WORKING. BLOWN FUSE? CAN IT BE FIXED MYSELF?


turn off the amp, change over the speakers turn on amp at LOW volume and listen to music, if same speaker is faulty them bass unit is blown replace or recone.

Apr 24, 2008 | Audio & Video Receivers

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