Question about Cambridge Audio Azur 640A Amplifier

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My line 6 amp

Ok chek this u know the cord u pop in the inpute the tip came off it and is stuck down in there i took it apart just to find out that it has a plastic end so i cant just put somethin tew the other end and nothing that i have is small enuff to get down in there and grab it so wtf do i do

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Re: my line 6 amp - Cambridge Audio Azur 640A Amplifier Amplifiers & Preamps

Us a hot pin do not

Posted on Dec 22, 2007

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How do I eliminate buzz?

Things to check:
1. With your multi meter, measure from left ground to right ground. What do you get? Measure from each input ground to chassis. What do you get there.

2. Get or make a pair of shorting plugs. Plug those into the inputs. Power on. Hum there or gone?

3. Turn the pre-amp on. Connect. Level of hum change with preamp on?

4 additional information. How efficient are your speakers? This is a big amp, high-efficiency speakers may show some noise, while low-efficiency speakers won't.

A trip back to the shop may be indicated, too.

Nov 23, 2015 | Adcom GFA-5500 2-Channel Amplifier

1 Answer

How come chanel a does not work on the pyle pro pta 1000 is it the way i hooked it up

Without seeing what you have... It comes down to this. Bad amp. Bad input. Switch your RCA cable, if the side is still out.. Unhook speaker, test it with a meter, small batt. Like a 9 volt. If if pops speaker is OK. No pop you have bad speaker, disconnected or bad wire.

Nov 22, 2014 | Amplifiers & Preamps

1 Answer

Russound CA6.4 amp / controller - 3 of the 6 zones can't switch source inputs.

I suspect the inputs will all go into an IC. You just need to trace one of them back till you come across it. Either the circuit around it will be the problem, or more likely the IC itself.

Jul 01, 2014 | Russound CA64IL Amplifier

1 Answer

Hi We have an Allen & Heath Mixing Desk connected to two Yamaha P4500 audio amplifiers (via graphic EQ and compressor/limiter) which power the 4 main and 4 side speakers in our church. We now want to...

'Splitting' leads is never the best way to distribute a signal. The best solution is to use the parallel inputs of the Yamahas to chain them together: mixer to amp1, amp1 to amp2, amp 2 to the Cloud. You should only need to use one input on the Cloud to drive all the channels, using the input switches at the rear.

Let me know if you need any clarification on this.

Sep 21, 2011 | Yamaha P4500 Power Amplifier 2-Channel

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Does the input signal to the xti 2002 amp make adifferance balanced or un?

The balanced line input will be used for long runs to eliminate noise. it is low impedance.the high impedance line (unbalanced) is ok for sort runs such as in a rack. if you were say running output from a mixer 50' away you want to use the balaced output on the board and the balanced input on the amp.

Aug 31, 2011 | Crown XTi 2000 2-Channel Amplifier

1 Answer

My crate amp stopped working

If you overvoltaged it and the fuse is not blown, i would check for blown capacitors. Capacitors are supposed to have a flat top. If its blown it will have a domed top or have junk leaking out of it. Best to replace with same voltage and capacitance, though some can be replaced with different stuff... if you know the circuit :D. You can find capacitors on line pretty cheap.

Don't know what a capacitor is or unsure what a blown one looks like? Type "blown cap" into google image search. You will see a bunch of healthy and blown caps, Mylar and electrolytic style on the first page of results.

Dec 27, 2009 | Amplifiers & Preamps

1 Answer

A Fender 15G starter amp. The Volume is on full, however turning the knob down wont turn down the volume. I took off the knob but it appears to look ok. What else could I do to fix this problem?

The controll is broke and needs to be replaced. Most likley the amp had fallen over. If you cannot do this you can contack Pro Line Music 215-736-8055

Dec 11, 2009 | Amplifiers & Preamps

1 Answer

Fuse blew on power now stuck in Protection Mode

Sounds like the out put stage of the amp is shorting, They are either 4 large transistors attached to an aluminium plate (heatsink) or one large chip with heatsink. also sounds as the driver stage went too when you switched it on the second time. If you know nothing of electronics I suggest you take it to an audio repair shop, as it is cheaper to repair than replace high power amplifiers.

Mar 29, 2009 | Amplifiers & Preamps

1 Answer

Gain on one channel stuck at max

Hi there

Check for a dry solder joint on one end of the vol control(earthy end). This will be causing your problem. The pot itself may actually be faulty to. You can always get stuff like that, just got to identify it. Check soldering to the pot first.

best regards

Mar 24, 2008 | Amplifiers & Preamps

1 Answer

Church System

Hi there Apostledavis

I don't know this specific system and you haven't mentioned whether you have just installed it or whether it has only just started causing problems but did work ok before?
However, there are a few things I would look at. I would also check the system right from the input bit by bit to see whether the problem is an input or output one.

1) Completely isolate the amp from all other equipment and connect a signal source to the left input only and then the right input only. If they sound much the same, the amp is probably ok. If they don't then the amp is probably faulty.

2) Check whether the monitors and amp both have weak output on the left channel.

3) Check and balance settings.

4) Check the speaker phasing.

5) Check all the interconnections, plugs and sockets. You could squirt some switch cleaner on a rag then wipe all the plugs before putting them back in the sockets.

6) Check the Behringer VU meters and make sure they indicate a reasonable balance on both channels.

7) Check that the channels sound ok when using headphones.

8) Check all faders and sliders by moving them vigorously to clear dust from the tracks. (Not applicable if digital, of course)

Hope this helps

Jan 27, 2008 | Behringer EUROPOWER EP2500 Amplifier

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