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Keyboard speaker project
Keyboard speaker project
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Old 11th July 2005, 12:50 AM   #11
Brion55 is offline Brion55  United States
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No, the 6.5" drivers wouldn't be up to the task if he were using only one, but as I understand, he is using 4 per cabinet. That is slightly more displacement than a 12" speaker.
How do I put the smoke back in this thing?
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Old 11th July 2005, 08:28 AM   #12
SimontY is offline SimontY  United Kingdom
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Yes, that's right - FOUR per side, so a total of EIGHT.

I did actually write a pretty long reply last night but my home Internet connection stopped working before I could post it.

I did some rough calculations, and 4 x 6.5" drivers provide a surface area approaching one 15" driver. So EIGHT would be outgunning a 15" on surface area by a good margin. Furthermore, when four voice coils disperse the power rather than one our thermal power handling should be pretty good. These drivers were used in mini-subwoofers, so they should be capable of taking a beating. And what's more, if they broke they can easily be replaced.. I have loads. Also, if you'll compare to a 15" PA driver, these will likely have a smoother midrange (I've heard it and it's pretty smooth) whereas your 15" will have a ragged midrange and short xmax.

I did say in my attempted reply that this project is becoming more and more likely to be used in practice and less likely to be used on stage, so maximum output may not be quite such a huge issue. I certainly feel an accurate sounding setup will be most useful to him in practice.

I heard my brother Mark's band for the first time last night, and they weren't too bad It's given me motivation to get going with this project
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Old 11th July 2005, 09:27 PM   #13
Nigel Goodwin is offline Nigel Goodwin  England
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I was assuming multiple small drivers, but the bass response and power handling is likely to be relatively small - as is the actual volume of sound they produce.

I don't know if you've ever seen the old Bose speakers?, they used to use 8 drivers of about 6.5 inches - they were commonly used for vocal PA. But the small size meant the bass response was pretty pathetic, even though they were PA drivers.

You didn't mention what sort of drivers they are?, are they for home audio?, or car audio? - 6.5 inch doesn't sound much of a sub-woofer?.
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