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Class D Switching Power Amplifiers and Power D/A conversion

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Old 31st May 2011, 09:17 PM   #1691
Smoothy is offline Smoothy  Sweden
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Thanks for the replay. I have looked at the Goldwood and the SPA the first one is only in the states like you pointed out and the SPA will be in stock in august. The thing is that im in a bit of a time limit. So will the HP-12W be outer crap or passable? Im not going with the original tweeter, Im going to use 4 horns that will go down to about 2000 hz.

This is very fare from the original design but i hope it will give a I-can-live-with-this result.
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Old 1st June 2011, 08:03 AM   #1692
rubennn is offline rubennn  Denmark
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On the Roskilde Festival forum there is an answer to your question by Saturnus on page 42.

Quote:
Problem is. As far as I recall the HP12W requires a minimum cabinet volume of 100 liters per driver, so it's really not doable in a compact shape.

You'll notice that the Coffin Blaster uses 4 of them, but that's in a 420 liter cabinet.
It'll be a big box
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Wohoo...Boominator 2012
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Old 1st June 2011, 10:22 AM   #1693
Closure is offline Closure  Sweden
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Quote:
Originally Posted by rubennn View Post
On the Roskilde Festival forum there is an answer to your question by Saturnus on page 42.



It'll be a big box
Here's a link to the diagram from winISD. It's a comparison between the original and my unorthodox boominator. As tou can see, the HP-12W has a flatter roll-off. It's tuned around 55 Hz to prevent it from peaking to high around 100 - 130 Hz.

The image: http://imageshack.us/photo/my-images...ehp10hp12.png/

Last edited by Closure; 1st June 2011 at 10:39 AM. Reason: forgot the link.
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Old 1st June 2011, 11:02 AM   #1694
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I was thinking of buying the Goldwood GW-1058.
4 pieces from the website "parts-express.com"

They can send it to me via FedEx, and the estimated arrival time is the 8th of june.

But is taxes included in the 172$ shipping and handling costs? Or is there going to be any additional fees?
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Old 1st June 2011, 11:32 AM   #1695
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Which Piezo would you recommend with the HP-10W or the Goldwood GW-1058?
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Old 1st June 2011, 01:04 PM   #1696
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Hmm i think i put an order for the wrong resistors ACOUSTO-PRO MOTSTÅND 20W 47 OHM HENK'S - ACOUSTO-PRO MOTSTÅND 20W 47 OHM . Will they work with the MGR CH-5 A HENK'S - MGR CH-5 A ?
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Old 1st June 2011, 01:16 PM   #1697
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Quote:
Originally Posted by joak0068 View Post
I was thinking of buying the Goldwood GW-1058.
4 pieces from the website "parts-express.com"

They can send it to me via FedEx, and the estimated arrival time is the 8th of june.

But is taxes included in the 172$ shipping and handling costs? Or is there going to be any additional fees?
No, and yes. That's why it's advantageous to buy via shopusa.com. Lower shipping costs and constums already included.
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Old 1st June 2011, 02:14 PM   #1698
Smoothy is offline Smoothy  Sweden
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I ordered Goldwood GW-1058 from Amazone and shipping from ShopUSA.com. 160 bucks for the speakers and 130 for shipping+taxes. I took shipping by air and I hope there wont be any problems or additional fees. Placed the order yesterday so there will be a couple if days before it arrives.

Is the Goldwood GW-1058 a better choice then the SPA-10PA?
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Old 1st June 2011, 02:48 PM   #1699
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So. I finished the ******.


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Old 1st June 2011, 03:57 PM   #1700
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Haha that looks awesome

Have you used the HP-10W's?
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