New B&C sub

454Casull · 6th January 2008, 04:42 AM

21" inches of goodness

http://www.bcspeakers.com/index.php?...4&prodotto=201

I wonder how linear it actually is.

adason · 6th January 2008, 12:10 PM

I wonder how much it actually costs.

MikeHunt79 · 6th January 2008, 04:25 PM

I wonder what would happen if you put 3kw thru it

adason · 6th January 2008, 04:51 PM

that should be easy to test (having some spare units)
plug it directly to 115 mains
that is little over 3.3kW into 4 ohms

redi · 6th January 2008, 05:17 PM

Quote:

Originally posted by adason
I wonder how much it actually costs.

Item Price: $699.95
http://www.usspeaker.com/B&C-21SW150-1.htm

BHTX · 7th January 2008, 10:09 AM

Yeah.. A 21" 'subwoofer' in an SB4 alignment for -3 dB @ 63 Hz.

technofreak · 7th January 2008, 03:21 PM

150 litres BR tuned to 35 Hz (EBS) gets you down to about 33Hz - plenty of lows for PA in a fairly compact box! Not the most efficient box on the Earth, though (ca 94 dB/W/m at 40 Hz), but still compact (700x700x420 outer dimentions when 18 mm plywood used). With 3kW you get about 128 dB at 40 Hz. A good 2x18" BR can get 130 dB with only 1 kW. But EBP of 107 would be fairly good for horns too, I quess.

6th January 2008, 04:42 AM	#1
454Casull diyAudio Member Join Date: Jan 2004 Location: Toronto, ON, Canada	New B&C sub 21" inches of goodness http://www.bcspeakers.com/index.php?...4&prodotto=201 I wonder how linear it actually is.

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6th January 2008, 12:10 PM	#2
adason diyAudio Member Join Date: Nov 2004 Location: home sweet home	I wonder how much it actually costs.

6th January 2008, 04:25 PM	#3
MikeHunt79 diyAudio Member Join Date: Aug 2003 Location: Bristol, UK	I wonder what would happen if you put 3kw thru it

6th January 2008, 04:51 PM	#4
adason diyAudio Member Join Date: Nov 2004 Location: home sweet home	that should be easy to test (having some spare units) plug it directly to 115 mains that is little over 3.3kW into 4 ohms

7th January 2008, 10:09 AM	#6
BHTX diyAudio Member Join Date: Feb 2006	Yeah.. A 21" 'subwoofer' in an SB4 alignment for -3 dB @ 63 Hz.

7th January 2008, 03:21 PM	#7
technofreak diyAudio Member Join Date: Dec 2006	150 litres BR tuned to 35 Hz (EBS) gets you down to about 33Hz - plenty of lows for PA in a fairly compact box! Not the most efficient box on the Earth, though (ca 94 dB/W/m at 40 Hz), but still compact (700x700x420 outer dimentions when 18 mm plywood used). With 3kW you get about 128 dB at 40 Hz. A good 2x18" BR can get 130 dB with only 1 kW. But EBP of 107 would be fairly good for horns too, I quess.

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