Question about GN Netcom GN 8000 Amplifier

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Echoing I read the manual and lowered the number inside the top cover, but my headset is still causing echoing on every single conference call I call into. any other advice?

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Re: echoing

If you still hear an echo perhaps the your are using a headset with sensitive microphone. Check the specification of your headset

Posted on Apr 25, 2008

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Re: echoing - GN Netcom GN 8000 Amplifier Amplifiers & Preamps

Lower the volume of your mic.

Posted on Jan 21, 2008

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I have a konzert av 302, i am wondering why it's sound is echoing even if the echo volume is off. can anyone help me please?

A faulty volume potentiometer? Some internal cross-talk? Free wires induction because they are too close, inside? It sounds possible to me and a minor problem. Don't worry too much.

Apr 19, 2014 | Amplifiers & Preamps

1 Answer

Can I use a 15A/32V fuse to replace a blown 15A/250V fuse

No! Unless you have read it wrong and it should be 320V. You can go higher than 250 volts but not lower. And you can go lower say to 10A and say up to 16 or 20A, though you should stay around 15A to be safe. If you do fit a 10A fuse at 250 volt and it blows straight away then it won't be the fuse that is faulty, but something inside the amp that has gone. As fitting even a 15A 250V will do the same. A 32 volt fuse in the mains section will burn out in a fraction of a second.

Dec 08, 2012 | Amplifiers & Preamps

1 Answer

After playing for a while my Sony Surround Amp cuts off and shows a PROTECT Reading in the window.

Sounds like the amp is protecting itself from an over-current situation.
This happens when the machine has to try too hard to get sound out to the speakers.
There are several possible reasons.
You may be using the wrong impedance speakers for the amp.
-some amps only work with 8ohm speakers
-some only work with 4ohm speakers
If you have a short circuit in the speakers or in the speaker wiring, that could cause the amp to overwork and go into protection.
If you connect up multiple speakers to the same single output of the amp you effectively short out the amp and cause it to overwork also.
Before troubleshooting, blow out the amp, dust inside can cause lots of problems with the electrical systems. Use canned air and do it outside with fresh air.
To troubleshoot :
1. check to see that the amp and the speaker have the same impedance number, either 4 or 8ohm. This is usually printed on the back of both. If they do match go to step two.

2-unplug all the speakers, add one speaker(left one) and test it for awhile to see if it goes into a protection mode. Next move that same speaker to the right side output and run it for awhile to see if it goes into protection mode. Repeat the test with your other speaker, moving it to both outputs(L&R) to check if it works. If the amp fails with either speaker on either output, you may have a mismatch of speaker and amp or a bad amp. If you have only one speaker that causes a protection, then you have a bad speaker or it's wire. If both speakers go into protection, get different speakers and test again. if it works for all of these tests, go to step three.

3.hook up both the left and the right speakers to the amp. be sure that the wires are stripped cleanly and twisted tightly, if you have screw on outputs that is. Test for proper operation. At this point you should know if there is a single speaker causing the protection or if it is a amp malfunction.

Jan 28, 2010 | Sony Amplifiers & Preamps

1 Answer

Scratching sound from right speaker connector

Try resoldering the speaker connector pins on the printed circuit board (if they actually are soldered to the board), there might be a loose solder contact, otherwise see if the connector is dirty and clean it if necessary.

If possible, check any other connectors and components for dirt and / or bad solder contacts and resolder if necessary.

Another quick thing is to check the relay which provides for the delayed speaker turn on - see if the relay contacts are dirty (brown, oxydized, kind of dark, burned color), if so, they need to be cleaned well with some fine sandpaper.

The relay (usually a black rectangular block about half the size of a matchbox) will usually have a plastic top cover which is snap mounted, if you can't remove the cover easily then it's better to desolder and remove the relay, open, clean and resolder it or even replace it with a new one. Some relays may have the top cover glued onto the housing in several spots which makes them more difficult to remove the cover and others still will be completely sealed with epoxy and therefore very difficult or impossible to open without damaging or ruining them.

Also, it could be something else, the above suggestions are just some of the possible causes and solutions.

Hope you can get it fixed.


3rq8 (Triarcuate)

Sep 15, 2009 | Amplifiers & Preamps

1 Answer

I have a Behringer 2642a mixer and a Roland 201 Space echo. How do I connect the echo into the mixer? There are so many input and outputs on the back of the mixer! Pete

This is relatively easy. All you need are two stereo RCA cables and RCA to 1/4" adapters. Plug the 1/4" adapters in to the FX1 send jacks on your mixer ( 1 only if you want mono echo, 1 & 2 if you want stereo ), and the other 1/4" adapters into your echo units in and output jacks - of course if you have 1/4" cables, you won't need the adapters.
The output of your echo unit then plugs into the FX return jacks on your mixer. Set your FX1 and FX2 send controls on the channels you want echo up to the 12 o'clock position and turn up the FX send masters also. You should see some level indication on your echo unit. The turn up the FX return controls on your mixer to the extent you want echo.
You may have to do some adjusting of all controls on the mixer and echo unit to get just the right amount of "dry" and "wet" sound.

Jul 29, 2009 | Behringer Amplifiers & Preamps

1 Answer

Echo into mixer

I think the Echo's output goes into the mixer's input.You should be using one's output into other's input...that's how things work.If you r talking about both the system's input then they won't work with each other. Other thing is that if it's mono then there r cable available for the use which transfers mono to stereo input and vice-versa.

Jun 07, 2009 | Amplifiers & Preamps

2 Answers

The sound on my sony amplifier sounds too low inside the speaker.

Try getting the suround sound modes off and using straight stereo ,with no delays,or echos,

Jan 12, 2009 | Sony STR-DE595 5-Channel Amplifier

2 Answers

The Sony TA-FB930R amp I have is giving a intermitten clicking, any idea what causes this

TA-FB930R. Unplug the power chord; all other wires can remain attached. Remove the top cover. Get some compressed air (aerosol, pump or compressor). Pull off the volume button and remove the little circuit board behind it (Beware of short circuit, even with power off!). This gives you enough room to blow compressed air behind the front circuit board to clean the selector (the culprit). While at it, clean the entire amp with compressed air.
First of: All electrical circuits collect dust > dust collects moisture > moisture vaporizes, making the problem go away temporarily after 10 minutes.... The second biggest culprits in general are: Oxidized connectors (use special spray and move them a little.). Loose components (circular crack around component leads, caused by heating and cooling of the circuit boards; solder them again). Worn or dirty potentiometers (tone/volume controls etc.). Clean, spray or replace. And third; check for burn spots and moist pointing at fried or leaky components. 9/10 you won't need a manual to fix electronics.

Jul 22, 2008 | Sony TA-N1 2-Channel Amplifier

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