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Class D Switching Power Amplifiers and Power D/A conversion

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Old 28th October 2012, 01:20 AM   #3291
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Obviously ;-)
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Old 1st November 2012, 07:24 PM   #3292
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For 24v with 2 batteries is it ok: two in series and one paralell? A bit noob question but i tont knowe how thid will work.
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Old 1st November 2012, 07:31 PM   #3293
freax is offline freax  Australia
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Not sure if you guys are aware of them, but the Kicker CompVT 6.5" exist and seem to suit your project very nicely. Though I would be cautious and go with an 8" model instead of the 6.5", the 6.5" requires very exact box dimensions inorder to work at all, but it can be done, and they do produce subwoofer frequencies, although fairly weak compared to the 12" sub I have, you need to drive them near-to their maximum inorder to get in the same level as a single 12" sub running on idle. I just added polyfill when the boxes rattled, it cured the rattle and improved performance.

Click the image to open in full size.

You guys might want to add one for when the boominator is running off mains?
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Last edited by freax; 1st November 2012 at 07:45 PM.
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Old 1st November 2012, 10:09 PM   #3294
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Quote:
Originally Posted by freax View Post
You guys might want to add one for when the boominator is running off mains?
Why?

Maybe I should elaborate and say it would take no less than 12 of these Kicker CompVT 6.5" each running of a 150Wrms amp to keep up with the low power version of the Boominator if it was to add something in the subrange.

Last edited by Saturnus; 1st November 2012 at 10:19 PM.
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Old 1st November 2012, 11:15 PM   #3295
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Originally Posted by saxomann View Post
For 24v with 2 batteries is it ok: two in series and one paralell? A bit noob question but i tont knowe how thid will work.
Should be: 3 batteries and: Don't know and this .
Do you guys put amps a cabinet or just strai in boominator?
Is a 15 cm long 3mm thick 3 cm high aluminium bar enough as heatsink for amp 9?
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Old 1st November 2012, 11:19 PM   #3296
freax is offline freax  Australia
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Quote:
Originally Posted by Saturnus View Post
Why?

Maybe I should elaborate and say it would take no less than 12 of these Kicker CompVT 6.5" each running of a 150Wrms amp to keep up with the low power version of the Boominator if it was to add something in the subrange.
nice, didn't realise the sub freq capabilities of the Boominator were so loud.
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Old 2nd November 2012, 06:24 AM   #3297
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nice, didn't realise the sub freq capabilities of the Boominator were so loud.
The Boominator doesn't actually play sub frequencies at all. It is loud though, very very loud. And any sub would have to be equally loud to add anything useful. That's why it would take so many of these ultra-low sensitivity car subs to keep up.
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Old 2nd November 2012, 06:30 AM   #3298
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Quote:
Originally Posted by saxomann View Post
Should be: 3 batteries and: Don't know and this .
Do you guys put amps a cabinet or just strai in boominator?
Is a 15 cm long 3mm thick 3 cm high aluminium bar enough as heatsink for amp 9?
No, you can't parallel one battery over two batteries in series. How do you figure that would even work? Oh, and please don't try it, exploding batteries are potentially lethal.

Use the suggested cabinet. A Hammond 1590N1 aluminium case. Don't need other heatsink than attaching the chip to the case (if you use that case).
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Old 3rd November 2012, 10:50 AM   #3299
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If you put two 12V battery's in series, you can parallel a 24V battery's over these two in series.
But I wouldn't do it because there can be a (small) differences in Voltage and one would discharge over the other. Unless you put a beefy switch between the parallel wire(s) and only engage the switch when in use.
Always use fuses!!
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Old 9th November 2012, 02:22 PM   #3300
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Default 3/4 Boominator?

Saturnus, would this driver PRV Audio 8MB600 8" High Power PA Midbass Woofer 8 Ohm 294-2712 be a good candidate for a 8" boominator?
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