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I have a BassCube 851 has power but no audio I have touched the audio input cables with my fingers and no feedback noise. Any schematics on this amp? or repair tips?

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6 Suggested Answers

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Posted on Jan 02, 2017

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SOURCE: Input Echo - audio feedback loop

do you record from
a) mic
or
b) line input ?

if a)
turn off your speakers, and use headphones.
or at least turn down the volume, and change the mics position (as far away from speakers as possible)

if b)
dont route the allready recorded channels to your master while recording (-> or mute them)

Posted on Mar 31, 2008

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SOURCE: audio feedback

put your mic on mute for playback. So the mic works but it doesnt play it from the speakers at the same time.

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If you dont see microphone on the list click on
options then settings
put a X on the playback -> microphone.

close settings

its now shown in the panel, click on mute and it wont feedback the sounds to you anymore.

Posted on May 09, 2008

  • 1 Answer

SOURCE: I have a m-audio buddy

It appears that the condenser microphones that are omni directional are too sensitive to process thru an amplifier. I used an mlx 991 directional condenser microphone and though still very sensitive, I was able to avoid the feedback. According to the company condenser microphones are used more for recording and not so much for live stage.

Posted on Jan 06, 2009

  • 1137 Answers

SOURCE: cable broke off in the input jack

I'm pretty sure t6hat the output jack is a sealed unit(contacts inside soldered to the surface of the circuit board. You may be able to grasp the center shaft of the plug with a thin jawed hemostat or really skinny long nosed pliers and pull it out that way. Make sure the amp is off and unplugged from the wall. If that doesn't work you will either have to get it removed at a shop or disassemble the amp to remove the circuit board and unsolder the jack and replace it or get the broken plug out of the jack once it is unsoldered. I've never had a Line6 apart yet but thats probably the type of jack they used. Thats because it has to be electronically isolated from the chassis. Hope this helps.

Posted on May 15, 2009

  • 6 Answers

SOURCE: feedback issues.

Did you run your power and remote wires the same route as your RCA cables? If you dont run the RCA cables on the opposite side of the power and remote you will get feedback through your speakers. I run my power on the side closest to the battery along with the remote ( passenger in my case) and the RCA cables should be on the opposite side( driver side). They say the power current will create a disturbance in the RCA cables that you would hear as feedback. Hopefully this will help you.

Posted on May 29, 2009

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The audio input jack is loose i'm guessing, so when i plug in the wire i have to move it around to get the sound to come out. i'm tired of having to move the wire every time it plug it in, what can i do to...


hi,
first of all try to replace the audio cable. if it has break inside then the same problem can occur. replace the cable and check the same.
if then also the problem remains. i think you are connected the cable to the R mono input. remove it from R mono input and connect the same to the L input.
there is no difference between the R and L input. if you connect it any input you will get the same out put.

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Subs don't go to a variety of connections on the amp. Let's stop guessing and stick with the prescribed one.

Register and download the manuals for free at retrevo.com

http://www.retrevo.com/support/Yamaha-YST-SW320-Subwoofers-manual/id/320bh340/t/2/

See page E1 regarding placement and safety.

http://www.retrevo.com/support/Yamaha-DSP-A595-Amps-manual/id/319ag821/t/2/

Page 44 - read about "humming".

If you have hum on the sub, is it there with and/or without the input cable attached?

Disconnect the input(s) and see if it hums in the absence of an audio source. A bad audio cable shield or unwisely-routed audio cables will allow entrance of unwanted signals from external power sources, magnetic fields, even dimmer-controlled track lights. Sometimes, simply reversing the orientation of the ac power plug can eliminate humming.

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1 Answer

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1 Answer

Feedback issues.


Did you run your power and remote wires the same route as your RCA cables? If you dont run the RCA cables on the opposite side of the power and remote you will get feedback through your speakers. I run my power on the side closest to the battery along with the remote ( passenger in my case) and the RCA cables should be on the opposite side( driver side). They say the power current will create a disturbance in the RCA cables that you would hear as feedback. Hopefully this will help you.

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