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Old 04-21-2019, 11:43 AM
clpetersen clpetersen is offline
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Join Date: May 2012
Location: Boston
Posts: 1,072
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OK. Don't ship it! Not needed anyway.
So, here is what I would try:

1. Find a CD with test tones on it, or perhaps computer generated tones. You want to go from say 40 Hz to 5 kHz or higher.

2) Take one of the mid range drivers and hook it to a pair of terminals. Test tone to amplifier, then to PC board input, or perhaps direct from computer to input, depending on how you are using the tones. Start with the very lowest volume you can hear clearly (this will be a tiny amount of power - just a few milliwatts, so no danger)

3) progress up the frequency range, say 40, 50, 60, 70, 80, 160, 320, 640, 1280,....

4) For the midrange drivers you should hear the speaker come on at a low frequency then go off at the upper cutoff (maybe around 2 kHz). Switch outputs after you note the frequencies.

5) the tweeter output should start to come on above 1 KHz. The midrange driver may not work too well at the higher frequencies but doesn't matter.

6) you now have the outputs identified. Plug in the tweeter to the tweeter output and confirm high frequency operation.

7. All set.
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Last edited by clpetersen; 04-21-2019 at 11:45 AM.
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