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I have an Anchor, Liberty PA speaker that shuts off when I speak on the mic or as sson as I raise the volume. What is the problem?

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Hi and welcome to FixYa,

Initially, your concern would be indicating two (2) possibilities:

  • speaker impedance mismatch. For some reason, the output thinks that the speakers connected to it are too low. This could be brought about if several speakers are connected to a single output without proper matching;
  • electronic/circuitry problem. the amplifier has partial short or cold solder connections of faulty components.
Just a start, do postback how things turned up or should you need additional information. Good luck and Thank you for using FixYa.

Posted on Nov 26, 2008

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I have an old late 70s Peavey PA-400 powered mixer. It's a workhorse that suddenly started doing the following: As soon as you turn it on - both speakers hum pretty loudly, and the back of the PA...


As these units get old, the solder joints can start to fail. Also, come of the components are getting tired. If you have no electronics experience, bring this to a servicer. I typically overhaul these units for about $100 plus parts. In most cases, the parts costis less than $20. These are solid units and you can probably get another 30 years out of it.

Part of the overhaul should be reseating all of the output transistors and replacing all of the heatsink compound as well as cleaning out all of the pots and switches.

Keep us posted.
Dan

Jul 14, 2008 | Audio & Video Receivers

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Hi I have A liberty Hi I have the latest model of the ANCHOR Audio liberty system . I am interested in getting the radio Microphone Module for it. Can I purchase this and fit it myself? if so...


Good Day,

You can purchase a mic through the manufacturer at this link
http://www.anchoraudio.com/access_details.cfm?PART=MIC-90

Here is a list of other accesories
http://www.anchoraudio.com/product.cfm?CATEGORY=LIBERTY+SOUND+SYSTEM+PACKAGES&prodname=Liberty&ACCESSORYF=LIBERTY

Just a FYI the mic used on your system is standard 1/4" plug so you can purchase a mic at any music or electronic shop and it will work.

Hope this helps, and remeber to rate the solution

Jun 30, 2008 | Audio & Video Receivers

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The system will shut off once the volume reaches a certain level. The system will not get really loud.


CHECK ALL YOUR SPEAKER CABLES YOU MAY HAVE A PINCHED OR PUNTCHURED SPEAKER CABLE. IF ALL YOUR WIRES ARE RAN ALREADY GO INTO SPEAKER SETTING GO TO SPEAKER CONF, WITH RADIO PLAYING, AND START RAISING Hz IF ITS A SPEAKER CABLE PROBLEM IT SHOULD CUT OFF WHEN UR RAISING THAT SPEAKER Hz. IF IT CUTS OFF WHILE RAISING THE Hz TAKE ONE SPEAKER CABLE STRAIT FROM RECIEVER TO THAT SPEAKER THEN TRY RAISING IT AGAIN. GOOD LUCK

Jan 09, 2011 | Onkyo TX-SR608 Receiver

2 Answers

My Onkyo 808 shuts down when i raise the volume, and when I try to set it up using the micophone.


Amps shut down in most cases because the receiver is detecting and impedance (below 4 ohms) that might damage the amplifier. Do a quick check of the speaker connection and look for wires that might be shorted to the frame or have crossed each other. This is the most common cause of the unit shutting down. Check your speakers impedance if you have a meter. If you don't then unplug power from the unit and then un-hook all speaker wires from the receiver. Next connect just one speaker (Front Left) and power the unit back on and take the volume up. If it shuts down then try the Front right all by itself, bring the volume up again. If the unit seems ok then add one speaker at a time and test. Continue until you find the bad speaker/cable. Your amp should be able to drive speakers down to 4 ohms. The NR808 has power monitoring (sometimes called crowbar) that looks for to much current and then shuts down. I suspect you may have a short in a cable or in a speaker. The 808 is a great amp and hopefully your problem is external. If your amp continues to shut down even with just one speaker connected then one or more of your channel amps (internal) is likley bad causing the unit to shut down. Good Luck.

Dec 09, 2010 | Onkyo TXNR808 Receiver

1 Answer

How to connect microphone to Yamaha RX-V365 as a PA system.


Home-theatre receivers don't have microphone inputs. If you want to use the receiver as an amplifier in PA system, you need to use some kind of mic pre-amp or a mixer with mic inputs.
For PA mixer is needed anyway almost every time and all mixers have at least one mic input (with a pre-amp). Mixers have line-level output(s), which you can connect to the analog input of receiver.
Using receiver as an amp in PA has advantage that you have 5 channel amp. When using high sensitive PA speakers (as oposed to less sensitive Hi-fi home speakers), you can get good performance with the power rating of receiver. You could even use 2 separate channels for subwoofers and 2 channels for satelite speakers - but for that you would need a receiver with 5.1 analog inputs and special device called crossover which would divide the output from mixer into low-frequency signal and high-frequency signal which you would then connect to the front and rear analog inputs. But with RX-V365 you can use only 2 channels with analog input

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1 Answer

The signal select is set to analog but it still turns off when the volume is slightly turned up, can you tell me why?


Sounds like the receiver is defaulting to "protect mode", this indicates that there is an electrical short present in the system, I have found that speakers or speaker wires tend to be the cause often.
Disconnect all speaker wires at the back of the receiver, turn receiver on and raise the volume control and see if the receiver still shuts down, if the receiver doesn't shut off, then one of the speakers or speaker wires are bad, reconnect one speaker at a time, raise volume and see if the speaker you connected causes the receiver to shut down, if not continue connecting the speakers one at a time, testing to see if the receiver shuts down after each speaker connected, when the receiver faults to "protect mode" again after you have connected a speaker then you know that the last speaker you connected is the "blown" or shorted speasker or wire.If the receiver still shuts off after disconnecting all speaker wires, then either one of your sources has a problem(DVD,CDplayer,cass deck,etc.) or the receiver has an internal short that will have to be repaired by a servicer.

Good Luck !

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1 Answer

Receiver shuts off when volume raised above 10


A fuse breaker or resetting electronic componet device attaced to the audio receiver protects the amp & speakers for destruction! The quality of the amp ,spkers& spks. wires help on choosing for protection shut downs! Of course at 10 volume you risk all of the amp in the receiver , buy a higher quality brand reciever ,intergrated amp, single amp . BE CAREFUL AT THE HIGHER VOLUME RATINGS YOU RISK HEARING DAMAGE! FOR REAL!

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1 Answer

Voices drowned out by background noise.


Not a suggestion, but I hope there is a solution.
Recently bought an LG HDTV that has a setting that should increase the voice over the background. If it does, I can't notice the difference. I guess they can probably measure it electronic.
I've had your same complaint for years, without a good solution. Best so far is to use headphones.
I have no idea why film people add all the extra noise. Most of it is not even real.

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