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Forum: DIY Speakers and Subs   08-18-2006, 08:48 AM
Replies: 18
Views: 1,354
Posted By joecarrow
I heard a Thigpen rotary sub costs around $30k. ...

I heard a Thigpen rotary sub costs around $30k.

The way it works is fairly simple. There is a rotating fan with blades that can change pitch like helicopter blades, allowing them a range of how...
Forum: DIY Speakers and Subs   08-15-2006, 07:50 PM
Replies: 2
Views: 502
Posted By joecarrow
The Bag-End subs operate on a principle known as...

The Bag-End subs operate on a principle known as ELF- extended low frequency. This puts a large woofer in a small sealed box where the mechanical resonance of the woofer/box system is at the high...
Forum: DIY Speakers and Subs   08-14-2006, 09:44 PM
Replies: 32
Views: 4,598
Posted By joecarrow
I've written about it on different forums in the...

I've written about it on different forums in the past. The only time I've seen a photo of somebody who did something similar was at a bar in Japan where they put a Lowther (or other similar exotic...
Forum: DIY Speakers and Subs   08-14-2006, 09:08 PM
Replies: 32
Views: 4,598
Posted By joecarrow
What's your budget? Are you trying to do a...

What's your budget? Are you trying to do a full-range speaker, or just a subwoofer?

I think that the best use of steel in a speaker within a reasonable budget would be using a beer keg as a...
Forum: Receivers, Amps, and Processors   07-28-2006, 07:49 PM
Replies: 25
Views: 617
Posted By joecarrow
Along the left side, I see an RCA input, a DC...

Along the left side, I see an RCA input, a DC power input, and another RCA input. The DC input is actually just about centered on the back of the amp. Along the right side, I see some banana plug...
Forum: Receivers, Amps, and Processors   07-28-2006, 03:21 PM
Replies: 1,898
Views: 571,426
Posted By joecarrow
One very real concern about the amplifier is its...

One very real concern about the amplifier is its output impedance. It may have a very flat, undistorted, and noiseless output- but if its output impedance is too high, your speakers can sound very...
Forum: Remote Control Area   07-27-2006, 09:49 PM
Replies: 4
Views: 293
Posted By joecarrow
Thanks, guys! I appreciate the help. I think...

Thanks, guys! I appreciate the help. I think I'll start out with the URC-8820. Maybe I'll report back when I get my receiver. I wouldn't mind posting some output impedance measurements when I buy...
Forum: Remote Control Area   07-25-2006, 10:34 PM
Replies: 4
Views: 293
Posted By joecarrow
Greetings all, this is my first post on this...

Greetings all, this is my first post on this forum. I've heard high recommendations from at least one close friend and from respected folks on various DIY boards when questions get specific to...
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