Question about Cambridge Audio Azur 640A Amplifier

1 Answer

My amp i took my amp to a party to be used to play the turntables through and sombody else wired up all the connections and obviously did a bodged job of it. Anyway it lasted about and hour then the music cut out,I felt the amp and i couldnt even pick it up because it was so hot. Now it will not turn on or work. I just want to know if it can be fixed or serviced or if i have to scrap it and get a new one.

Posted by on

1 Answer

  • Level 2:

    An expert who has achieved level 2 by getting 100 points


    An expert that got 5 achievements.


    An expert who has written 50 answers of more than 400 characters.


    An expert who has answered 200 questions.

  • Expert
  • 275 Answers
Re: my amp

Yup, looks like someone who does not understand the quality of a Cambridge amp connected it wrongly, or with mismatched components. Since you state that the Amp was very hot,It suggests that the Speakers hooked to the Amp were of a Higher Rating than what the Amp could Handle. That it worked for about an hour is credit to your machine. In all likely hood. 1. The Power supply fuses are blown, and 2. The Audio Aoutput Transistors also. can be fixed, but very expensive job, and only in the hands of the right Technician.

Posted on Aug 13, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

Sorry, new at this and finding the manual hard to understand, how do I connect my nad C-340 amp to my C-162 preamp. Trying to add a turntable and have a few other questions

You must connect the turntable to the plugs on the left side of your amplifier when you are behind the pre amp. You have to know if you are using a MC or a MM element in your turntable and connect to the right plugs. Don't forget to put the switch in the right position (also MC or MM) The moving coil element is giving a very low voltage accordingly to the Moving magnet element. So it needs some extra amplification.

Nov 28, 2012 | NAD C162 Amplifier

1 Answer

SUV500 2-Channel Amplifier: Hi! can I connect another technics cd-player,sl...

yes you can connect another cd player to the DAT input of your amp.
input connections like DAT, TUNER, CD, AUX etc (except phono) is just to differentiate between what sources are connected, the amp cannot tell what source is connected and will output the sound no problem.

as for the remote operation, if the 2 technics cd players are switched on at the same time they're going to do what you command from the remote together but you'll obviously be listening to 1 at a time.

May 17, 2010 | Technics SUV500 2-Channel Amplifier

1 Answer

Erratic volume from new turntable thru used amp

First detirmine if it is only the turntable that is causing this problem, by connecting something else to another terminal. If that works fine it will be the cartridge preamp that is causing the problem. From what you describe it sounds like an IC that is playing up.
If the other device plays up as well as the turntable, I still suspect an IC, but this time in the main pre-amp. The reason I suspect an IC is that by the sound of things both channels are playing up and therefore it has to be somepart that has both channels going in and out of it- thus IC!

May 08, 2010 | Amplifiers & Preamps

1 Answer

Took my RA300 and Tannoy Reveal X speakers to a cellar party for halloween. No drinks were spilled or anything but it had an ipod plugged into it most of the night and the volume on the amp turned to max,...

Normally when people bring their HI-FI to a party they tend to fix up the leads to the speakers in a flimsy manner ( as it is only temp) . With the crowd mulling around these leads(wires) could very well come loose or even short out. This leads to your Final Drive ( Output Amp) to short out. It is not an expensive repair. Check your final amp & replace any shorted/blown items. To get full satisfaction the job best be handled by the local agents of the amp.

Nov 19, 2009 | Alesis RA-150 Amplifier

1 Answer

Problem with phono jack on amplifier for turntable. When turntable is played there is a lot of feedback which makes it difficult to hear the record. turntable is an aiwa and amplifier is sony but shouldn't...

sound like it needs earthed.
there should be a little skinny black wire either coming off the turntable or in between the phono cables screw this to your amp.
if not then check the head shell connection to the tonearm.
if after all that & still on luck the is only one solution left. buy a little mixer & connect the turntable to it then come out the mixer into the amps AUX or CD input.
good luck mate.

Aug 13, 2009 | Amplifiers & Preamps

1 Answer

Where do I connect the speaker wires?

Because your amp has 4 channels on it on side A you can connect 2 speakers for left and right and the B you can do the same. your red is positive and black is negative. so in total you can have 4 speakers connected to your amp

Jul 26, 2009 | Amplifiers & Preamps

1 Answer

Connection of Amp to Equaliser

Thanks guys, but i solved my problem, i experimented and decided that i would run my DVD player (Aux Out) as a CD player through the Equaliser in [Rec] and from equaliser out [Play] i went into Tape Play on Amp, then i connected my Turntable CD Radio System to the Tape 1 Rec on Equaliser and then from Tape 1 Play on Equaliser went into the Tape 2 on AMP then i could use Aux in on Amp to connect my Laptop via my laptops headphone socket my laptop has an equaliser so i didn't need to connect to pioneer EQ, i also connected a small 5.1 to the DVD's 5.1 and connected 4 *45w Speakers to the AMP. and i can say it was FANTASTIC i couldn't get to 5 on my volume it was un @$#%believable.
My Quote
"Where there's an In, there's an Out".

Aug 30, 2008 | Amplifiers & Preamps

1 Answer

Connecting a behringer djx700 mixer to a panasonic amp

The problem is most likely between the turntable and mixer. You need to be sure that the turntable is connected to a phono input. I'm not sure if your mixer has one. If not, you need to have a phono pre-amp between the turntable and the line input on the mixer.

Check that first and get back to us if you still have problems/questions.


Aug 21, 2008 | Amplifiers & Preamps

2 Answers

Connecting speakers to amp

Your Amp will be having a pair of Phono / AUX input sockets at the rear. Connect the two Red and White cabbles from the Turntable to these sockets. I am unaware of what are Pilot Speakers. regular speakers have a dual colored pair of cables coming from them. they have to be connected to the speakers Connectors at the rear of the Amp. Play a Vinyl Record, select Phono on your AMP, and enjoy your music.

Sep 15, 2007 | Amplifiers & Preamps

1 Answer

Connect turntable to NAD S300

Yes you will need a pre-amp for your turntable, there is no phono input on this amplifier. Please update the question & let us know if the information given was useful to you - Good Luck!

Sep 08, 2007 | NAD S300 Amplifier

Not finding what you are looking for?
Cambridge Audio Azur 640A Amplifier Logo

Related Topics:

179 people viewed this question

Ask a Question

Usually answered in minutes!

Top Cambridge Audio Amplifiers & Preamps Experts


Level 3 Expert

4518 Answers

Brad Brown

Level 3 Expert

13346 Answers


Level 2 Expert

473 Answers

Are you a Cambridge Audio Amplifier and Preamp Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides