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Old 02-25-2013, 02:21 AM
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Default logitech laptop speakers. 1.5" (?) mini woofers. How to test frequency range?

I gutted a pair of $10 logitech computer speakers for the hell of it.

I ran one on one of my sony amps (40-60w rms I assume) and it played really well free air. They read 12ohms on a meter but sound good regardless. I played reasonably loud and they did not distort or sound crappy. I think I was using the high pass filter on the crossover at the time, so it was purely being ran as a tweeter.

My question is: how can I test their frequency range accurately? And how can I guess at the enclosure size they would be good in? Can I free air them?

Only idea I have now is to try one on high pass and then on mid range from my crossover+amp.

For $5 each I figure it would be a good project. I have an un-opened/un-used pair of them as well, so if this turns out right, I would be using 4 of these at $20 total cost. Not bad IMO if they sound decent

Planning to put them either in a dual a-pillar pod alongside some vifa tweeters or inside the center console compartment on the dash next to the windshield and having a true left and right for passenger and driver.

I am not heavily into SQ so I'm sure I won't notice if it's not perfectly matched. Just something fun to do. I will eventually have the a-pillar tweeters facing passenger/driver directly and not towards each other and will give them less power to hopefully extend their life and get more sound out of them compared to how they were, behind a grill and pointed at each other like I mentioned above.

BTW I have a sony xm-4045, xm-6020, xm4040 and xec-700 if that helps......


http://i.imgur.com/30pEpHP.jpg

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Old 02-25-2013, 04:12 PM
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On the cheap, download an RTA app and play full range pink noise with the mic aimed straight at the speaker cone up close. I wouldn't expect these to sound that great at high volume in the car. It all depends on your expectations and goals. If you rock out at conversation levels these might be decent, but my guess is they'll fall flat as you turn it up high.
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