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Older Activity
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Today, 11:40 AM
Audible resonance isn't the only issue. Energy expended vibrating a panel is energy wasted, and since the back is usually the largest panel on a cab...
34 replies | 677 view(s)
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Today, 08:15 AM
Vented subs should be lined, sealed should be stuffed with sufficient damping to lower Q to the desired figure.
1 replies | 63 view(s)
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Yesterday, 10:26 PM
+1. Where noise and hum enter the picture is from mixing the signal and AC chassis ground. Most of that can be eliminated by using balanced...
53 replies | 1103 view(s)
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Yesterday, 07:24 PM
Also true, though most make them as shown below left, while below right is more effective using less material:
34 replies | 677 view(s)
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Yesterday, 05:28 PM
Yeah, but if you use hydrogen you could end up with your own version of the Hindenburg.
34 replies | 677 view(s)
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Yesterday, 05:23 PM
You could hollow them out and fill them with helium, but glue works too. :)
They need not be dowels, 1x1 is fine, and I've seen guys make L shaped...
34 replies | 677 view(s)
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Yesterday, 04:40 PM
+1, corner blocks/battens are where the cab is inherently the strongest anyway. This is how you brace for maximum panel stiffening effect:
34 replies | 677 view(s)
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Yesterday, 12:12 PM
With horns, yes. With other alignments, no. But make sure your data is correct, as adding additional drivers impacts system efficiency. It's not just...
4 replies | 131 view(s)
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Yesterday, 11:56 AM
Performance isn't measured in dollars. Much to learn you have. But as to the advantage of multiple smaller speakers, it's portability.
4 replies | 131 view(s)
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05-22-2013, 02:20 PM
What changes is Re, Le and Bl, and none of those affect the box volume or response when taken as a whole. Only sensitivity changes, depending on if...
10 replies | 249 view(s)
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05-17-2013, 08:07 PM
3 wavelengths, actually. For all practical purposes even most pro touring line arrays are point sources below 400Hz or so.
11 replies | 682 view(s)
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05-14-2013, 09:09 AM
There are many, including my David that was mentioned, and they're really just 3 way speakers. In the original drawing by the OP he had the subs in a...
47 replies | 1457 view(s)
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05-13-2013, 10:48 AM
DC phantom power is transmitted simultaneously on both pin 2 and 3, with the shield (pin 1) being the ground. Since the DC voltage on the ‘hot’ and...
5 replies | 784 view(s)
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05-13-2013, 08:13 AM
True, if the array is horizontal. If it's vertical CTC spacing isn't critical unless your listening distance is quite close, in this case too close.
12 replies | 300 view(s)
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05-12-2013, 07:44 PM
Per watt?
My point is that you want the sensitivity of the sub and the mains to be reasonably close to each other. You might not need 9 woofers to...
12 replies | 300 view(s)
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05-12-2013, 04:47 PM
The sub won't be able to keep up. Two might.
Don't calculate it, measure it on the prototype. Measure from at least 3 meters away so that the...
12 replies | 300 view(s)
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05-12-2013, 08:13 AM
AFAIK almost all x.1 receivers have a stereo mode.
You don't need an 80Hz passive high pass. Aside from being outrageously expensive it won't work...
47 replies | 1457 view(s)
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05-11-2013, 07:44 PM
Rotech, don't bother replying to my posts, as I put you on my ignore list long ago because of replies just like the one above. I took a look at it...
22 replies | 477 view(s)
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05-11-2013, 07:36 PM
First things first, ditch the mains above the subs idea. The best placement for mains and subs very seldom results in a shared footprint. Make them...
47 replies | 1457 view(s)
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05-11-2013, 05:31 PM
Inside the car or out? Outside you won't hear the sub, you'll hear the sheet metal of the car vibrating at the car body's resonant frequency, so it...
22 replies | 477 view(s)
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05-10-2013, 07:23 PM
Since the output of both the driver and PR are omni-directional it doesn't matter where either go.
2 replies | 93 view(s)
About billfitzmaurice
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