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Audio lead query
friendlygiant
08-04-2009
I have an audio lead which I got originally with a monitor.
It is mini jack to mini jack. Near each end is a cylindrical thing
about 30mm long x 19mm diameter. What are these cylinders?
Could I use this lead for connecting iPod to, say, a Bose cd/radio?
In other words, can I use this lead as an "ordinary" lead despite it having cylinder thingies on it !
chrisjr
08-04-2009
They will more than likely be ferrite rings. They are designed to prevent high frequency signals passing down the lead and causing interference. Normal audio signals should pass unhindered.

So yes you can use it as a "normal" lead, as that is all it is really.

But just be aware that you cannot connect it between the headphone jack on the iPod and the headphone jack on the Bose system. You must connect the lead to an Audio INPUT on the Bose.

Mini-jacks are most commonly used for headphones but it is not impossible the Bose has an input on jack, just check before you plug it up. Plugging two headphone outputs together might not do either unit much good!
friendlygiant
08-04-2009
Originally Posted by chrisjr:
“They will more than likely be ferrite rings. They are designed to prevent high frequency signals passing down the lead and causing interference. Normal audio signals should pass unhindered.

So yes you can use it as a "normal" lead, as that is all it is really.

But just be aware that you cannot connect it between the headphone jack on the iPod and the headphone jack on the Bose system. You must connect the lead to an Audio INPUT on the Bose.

Mini-jacks are most commonly used for headphones but it is not impossible the Bose has an input on jack, just check before you plug it up. Plugging two headphone outputs together might not do either unit much good!”

Thanks Chris....connections on Bose are ok....glad I asked...I was going to scrap a brand new lead!!
chrisjr
08-04-2009
Oh and just double check it is a STEREO jack. I have seen monitors with built in speakers and microphone. The speaker lead is obviously stereo but the mic lead will be mono.

A mic lead is perhaps more likely to have the filters in because the signal level from a mic is tiny compared to that on the speaker feed. So more chance of interference.

Stereo
http://images.maplin.co.uk/full/hf98g.jpg

Mono
http://images.maplin.co.uk/full/hf80b.jpg

Plugging a mono plug into a stereo socket might short circuit the right hand channel of the headphone amplifier in the iPod. Obviously not a good idea! Won't hurt the input on the Bose system though (but you'll only get noise out of the left speaker). That is if they are both wired Tip = left, Ring = Right
Last edited by chrisjr : 08-04-2009 at 12:29
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