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Old 13th March 2007, 03:43 PM   #1
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Question Which terminal is postive ?

Got a pair of Audax 25A tweeters, and has forgot which terminal is + (positive) and which is - (negative). There are no indication on the unit
They got one wide and one small terminal... Which is which ?

Thanks in advance
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Old 13th March 2007, 03:46 PM   #2
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On most Audax, (waiting for the ), the small terminal is positive, but you can safely check them with a 1.5V battery.
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Old 13th March 2007, 03:58 PM   #3
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Not sure I would check tweeters with a battery. Might be easiest just to see which way sounds best?
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Old 13th March 2007, 04:09 PM   #4
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I've never hurt one yet. I wouldn't use a 9V though...
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Old 13th March 2007, 04:17 PM   #5
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Thanks all
I try the small terminal as positive first
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Old 13th March 2007, 04:21 PM   #6
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Hi,
I've never tried connecting a battery to a tweeter.
Is it hard to see the excursion with only 1.5V?

P.S. Can I bias my tweeters into class A with this method? (Joke)

Martin.
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Old 13th March 2007, 04:35 PM   #7
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every speaker I've ever seen that has a small and large terminal uses the large one as positive, and the small as negative.
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Old 13th March 2007, 04:51 PM   #8
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Quote:
Originally posted by pinkmouse
I've never hurt one yet. I wouldn't use a 9V though...

Hi pinkmouse

I usually use a 9 Volt battery with good results and the movement of the dome is easily seen.

The DC resistance of the tweeter is ~ 6 Ohms , 9 Volts across 6 Ohms give 1,5 Amp ( if the battery is fresh enough... ).

That will give a power dissipation of 9 X 1.5= 13,5 W , that the tweeter will take safely for briefs instants...

Just my experience...
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Old 13th March 2007, 05:01 PM   #9
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Quote:
Originally posted by black300zx
every speaker I've ever seen that has a small and large terminal uses the large one as positive, and the small as negative.
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Old 13th March 2007, 05:07 PM   #10
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Ok

Did the battery test anyway
Small terminal on AUDAX A25 tweeters are - (negative)
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