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Old 28th January 2009, 10:39 AM   #1
pra3718 is offline pra3718  India
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Default TDA1554Q output pins (+), (-)

I plan to build bass-woofer unit for small room with 2 drivers with push-pull method. (ISOBARIC) For that TDA1554Q has stereo output pins are (6,8) and (10,12) I want to know

Pin 6 is (+) or (-) AND
Pin 10 is (+) or (-)

In fact, I have two amps for bass unit (22w+22w) & I have to build single incloser/Box. I know, isobaric has 2 or 4 drivers in it. And the advantage of isobaric is space saving but losses of additional amp & driver.

Interesting method is two small 6" drivers side or rear firing & on the front 10" or 12" passive radiator. Or 6" driver behind the 10" passive radiator.

Which is the best method (isobaric OR with PR) ?
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Old 28th January 2009, 10:52 AM   #2
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Both are (+)

http://www.datasheetcatalog.org/data...s/TDA1554Q.pdf

Your speaker design depends on the T/S parameters. I wonder if such a big passive radiator pairs well with 6 inch drivers. They will probably not move enough air to drive the passive radiators. If you have enough space for 10" or 12" passive radiators, go for a 10" or 12" driver instead.
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