Question about Cambridge Audio Azur 540R Receiver

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Sonobuoy deplotyment Hi, I am trying to set up a transmitter-receiver system to record underwater sounds. All I have so far is a heap of old LOFAR sonobuoys (4 types: SSQ906, 981, 937A and 905) and I don't even know what signal (frequency) range the hydrophone covers/ VHF transmitter transmits, whether it is analog/digi signal that gets transmitted and what freq. range the aerial has got to be cut for. Another issue is the system's set-up- which is something I know nothing about and there is limited published information available. Thus I'd be most grateful for advice and comments on what I thought made sense and would work; I reckon ICOM PCR-1500 receiver, which records the raw data (?) straight to a laptop hard drive (?) seems to cover a wide freq range would be a good choice of a receiver (do i need a super-high spec sound card for this?). A remote aerial would aid in maximizing the detection range. The aerial would need to be connected to receiver via an aerial wire (?)and the aerial also has a pre-amp (where?). any guidance will be much appreciated. best regards, l.

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Re: sonobuoy deplotyment

I am trying to tune my laptop into receiving sound from a hydrophone listening device

Posted on Dec 19, 2008

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Re: sonobuoy deplotyment

You should check out the web site of thales or Ultra for information about both frequencies (Radio and hydrophone).
and you should check the frequency setting option, they all have it.
here is a link that will tell you the Freq.

Posted on Sep 28, 2008

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How do I get this system working properly again?

Here's what I would do:

1) Wherever you get sound, hook up each speaker in turn to validate they are working. If you have another, known working system to do this with, even better.

2) While testing your speakers on the known good system, once a speaker has been proven working, validate that your sound source (and cable) is working by using it as a source once everything else has been validated.

3) Now that you've isolated and proven everything but the receiver, put the receiver in stereo mode and try it out as a simple left/right amp. Once you get this far you will be able to do the surround stuff, but only with a surround encoded (ex: AC3) data stream.

If you need more help, just ask.

Graham Leach

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Intermittent LOUD shorting sound

I would prefer to hear it to be sure which one it is, but the four biggest causes of noise in a wireless system are: 1) Something hitting the mic (check to make sure the mic is free of clothing, other people, faces, etc.) 2) If the mic is a lavalier or in some way has a cable that plugs into the transmitter, something pulling on it could create a loud noise. Check to make sure it's in snug. 3) RF Interference with another mic or some other interference source. Try changing the frequency. 4) Something blocking the signal between the transmitter antenna and the receiver antenna. This is most likely to happen with a lavalier in someone's pocket or under clothing, and/or if the transmitter is far away from the receiver. The SLX series is okay for what it is, but part of why it's on the cheaper side is because of its limited distance. Unfortunately the only ways to alleviate this are to a) Reduce the distance, b) get a stronger wireless system, c) move the transmitter somewhere that the antenna is free, and d) invest in True Diversity antennae for the receiver.

Sep 23, 2013 | Shure SLX4 Wireless Receiver with Antennas...

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I have wireless speakers and the transmitter stopped working. Nothing happens when you plug it in--??? It's only a month old. AW872

Hi I also post in here , so that you can let me know how it goes.

Try unplugging the transmitter from power adapter, if it also has batteries remove them. Also unplug transmitter audio cable.

Then remove batteries/unplug adapters from speakers.

Wait few minutes and reconnect the system.

This is a proper hard reset, and can fix minor problems.

If when you re connect the transmitter does not glow, or you do not have sound on one or both channels then there is a fault.

Check the transmitter audio cable, a short in there can cause troubles.

If you find no problems , then unit is defective, as it is under warranty contact Acoustic Research to validate the warranty here and get the transmitter or the whole set replaced.

Feb 13, 2009 | Audio & Video Receivers

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Connecting Pioneer SX-737 Receiver to computer problems

I've been recording LPs for over a year now.

I've got the turntable outputs plugged into the phono inputs on the receiver amp.

I'm taking the Y cord (pair of RCA connectors at one end, mini plug at other) from the Tape Record (these are what you'd use to send a signal to the tape deck for recording) on the amp to the "line in" on the sound card. You may want to look up the specs on your sound card to make certain that you've got the plug in the correct socket. There may be a "line in" and a "microphone" socket. Use the "line in"

What recording software are you using? Audacity is free and is ok. I'm using Goldwave (costs ~$50) and highly recommend it. MUCH better than any other package I've tried. Just google "goldwave" to find it.

The recording software should have an option for selecting / specifying a source. If you have "microphone" selected and the y cord going into the "line in" socket, yoiu won't get anything.

Dec 20, 2008 | Audio & Video Receivers

1 Answer

Record from turntable to computer via Pioneer SX-737 Receiver

Hi and welcome to FixYa,

Pls be informed that the model was not displayed, only the brand Pioneer.

Nonetheless and assuming that the turntable is built-in into the receiver, locate the REC out or LINE out at the rear of the receiver. Plug the RCA of the cable there while the 1/8 plugs into the AUX/LINE IN of the computer. Select PHONO in the receiver, in the computer, double click-on the speaker icon in the System Tray (clock). The speaker control window will open:
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  • click on Properties;
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  • check Line in and/or Aux;
  • press on OK button;
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It is of course necessary to likewise be running a recording program.

Good luck and Thank you for using FixYa. Happy Holidays.

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2 Answers

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Unless I'm missing something in your description, your problem is simple: You need an riaa phono preamp between your turntable and your receiver.

Modern receivers do not offer "phono" line inputs and therefore do provide the amplification required to bring up the line level of the turntable. The result is low or no volume which is what you are essentially describing here.

Just google "riaa phono preamp" and you can either make one for $30 or buy one from $100 to over $10,000 (handmade tube goodness).



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1 Answer

I have bought an old B&O beogram rx2 turntable and am having difficulty playing any records. When I press play the needle will sit on the edge of the record but when it moves in to the grooves it seems...

If you cannot see a small tip on the needle then yes it is worn out,but you can check by rubbing your finger over the tip when the system is on,if you hear sound through the speakers then it should play the album,make sure that the weight at the back of the arm is set to keep the needle in the groove as this may be set to far back,move it forward to keep weight on the needle.

hope this helps.

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Problems getting Zone 2 to work with TV and DVD player

You may want to take receiver into a repair shop. I had the same problem, not useing a wireless transmitter. My denon has been in the shop since Jan 9th. There is a problem with zone 2.

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Onkyo TX-SR504 - Sound problem

Ooops, that did not work.  OK try  for download of manual in .pdf form, and English too!   Hope this helps.  Cheers,   Chris  :)

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