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Re: extension cables

Subject: Re: extension cables
From: "Dan Dugan" dandugan_1999
Date: Fri Jan 22, 2010 9:58 am ((PST))
> Another thing to bear in mind is any cable acts like a capacitor which for, 
> shall we say 'normal' runs is not going to be a problem. But as the length 
> gets longer it can start to attenuate frequencies acting like a low pass 
> filter. This is dependant on the input impedance of the unit your using but 
> try and go for low capacitance cables if there is a choice.

Capacitance is indeed the factor--but the rolloff will more likely be 
determined by the source impedance.

> So if you use good quality cable and if there is very little electrical 
> equipment causing interference then 100 feet (+) should be OK, you may even 
> be able to go longer.
> The other thing you could do is use something like a FEL 3.5 series mic amp 
> and put that at the far end with the Telinga and then run the cable back to 
> the LS-10. You would then have a +20dB signal now running along the cable 
> which will be less prone to problems.

But the FEL preamp uses up the PIP and doesn't pass it to the mic. I wonder 
what its actual output impedance is.

-Dan Dugan

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