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Op Amps for Balanced Line Converter
Op Amps for Balanced Line Converter
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Old 2nd August 2006, 12:12 PM   #11
dkingham is offline dkingham  United States
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Join Date: Aug 2006
Location: Brooklyn
richie00boy, unfortunately, I can't disconnect the CD Changer and use the inputs because the CD Changer has to perform a "handshake" with the head unit in order to activate the inputs. (Check out this site to learn more about the Saab audio systems: http://www.kolumbus.fi/richard.bevan...b93/index.html). Anyway, the bottom line is, I would like to keep the CD Changer functioning, which is why I want to build the converter.

As far as size goes, I'm not too concerned because I have room to hide the whole thing in my dash behind the climate controls. That being said, I still plan on checking out the ESP site.
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Old 2nd August 2006, 12:16 PM   #12
richie00boy is offline richie00boy  United Kingdom
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Join Date: Nov 2003
Location: Gloucestershire, England, UK
Op Amps for Balanced Line Converter
Well how do you plan to couple the input to the iPod without disconnecting the changer then? I thought you said you were switching it with a relay?
www.readresearch.co.uk my website for UK diy audio people - designs, PCBs, modules and more.
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Old 2nd August 2006, 12:33 PM   #13
AndrewT is offline AndrewT  Scotland
Join Date: Jul 2004
Location: Scottish Borders
my very old car radio had a handshake with ancilliaries via the DIN plug on the back.
A relay to connect in a tape player was easily achieved.

You could control the radio/amp from the tape player. ie. if the radio was muted and all appeared to be off, then inserting a tape into the player brought both units to life and played the tape through the radio's amplifiers.
It was a Blaupunkt Frankfurt before the cheaper radio/tape player came onto the market.

A radio/tape with separate amplifier (by Panasonic) achieved similar off/on for the amplifier via the umbilical.

The Panasonic radio was not a patch on the dedicated Frankfurt radio.
regards Andrew T.
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