Subwoofer, 2x12" or 1x15/18"? - Page 3 - diyAudio
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Old 7th April 2003, 03:16 PM   #21
Electrons are yellow and more is better!
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It's very pleasant to dance at 19 Hz at very high volume either. 40-60 Hz is the horse kick in the stomach.
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Old 7th April 2003, 07:05 PM   #22
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Quote:
Originally posted by OMNIFEX
- 3dB @ 19.7 Hertz

i dont understand the -3db bit

514 Liters (Outer Dimensions)

fB = 20Hz

meaning?

94.5 - 95.5 dB from 21.6 - 37 Hertz (2.83 volt)

meaning?

Two 15 inch woofers. (8 ohm each)

which ones?

A little under $200.00 for both woofers. (Your
saving 100 pounds!!!)

my budget is £200

What do you think?

is this good? im a complete newbie to audio.
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Old 8th April 2003, 09:52 PM   #23
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Quote:
Originally posted by Matttcattt

well, is this good?
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Old 10th April 2003, 06:02 AM   #24
OMNIFEX is offline OMNIFEX  Jamaica
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Yes its good.


But, if your a newbie in audio, (As you stated) your better
buying a ready made sub, than building one.


Ask anyone who built one. They made alot of mistakes
before getting it right. (And they were familiar with audio)



Take Care
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Old 11th April 2003, 04:35 PM   #25
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if you think i should buy one, are these good, its from a local suplier. Sub One Sub Two
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Old 12th April 2003, 05:17 AM   #26
CarMan is offline CarMan  United States
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It has very low efficiency but will play some very low bass.

DPL12

http://www.adireaudio.com/diy_audio/...dire/dpl12.htm

Big box too.
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Old 12th April 2003, 07:51 AM   #27
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Quote:
Originally posted by OMNIFEX
But, if your a newbie in audio, (As you stated) your better
buying a ready made sub, than building one.
I disagree. If you can build a stout box, a sub is a very good project to get your feet wet -- and you can save big bucks over a commercial unit.

And i would advise always using a pair of drivers (in push-push) instead of a single 12.

2 x 12 instead of a 15
2x15 instead of an 18

Value for the $$ it is hard to beat 12" because the market segment is VERY competitive.

A sealed (or aperiodic) box with room gain is going to sound better than a ported enclosure. If you can afford the volume a TL is nice too.

And remember Hoffman's Iron Law. Low Bass, Small Box, and high efficiency just don't go together.

dave
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Old 13th April 2003, 05:54 PM   #28
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Quote:
Originally posted by planet10


I disagree. If you can build a stout box, a sub is a very good project to get your feet wet -- and you can save big bucks over a commercial unit.



Quote:


And i would advise always using a pair of drivers (in push-push) instead of a single 12.

Push-push?

Quote:


2 x 12 instead of a 15
2x15 instead of an 18

Value for the $$ it is hard to beat 12" because the market segment is VERY competitive.

A sealed (or aperiodic) box with room gain is going to sound better than a ported enclosure. If you can afford the volume a TL is nice too.

TL?

Quote:


And remember Hoffman's Iron Law. Low Bass, Small Box, and high efficiency just don't go together.

Wll Low Bass, Big Box, Low Efficiency go together?

Quote:


dave
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Old 13th April 2003, 11:31 PM   #29
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Quote:
Originally posted by Matttcattt
Push-push?
A taken to extremes example:

Click the image to open in full size.

There has been a lot of talk about push-push -- do a search.

Quote:
TL?
Transmission Line

example:

Click the image to open in full size.

Quote:
Wll Low Bass, Big Box, Low Efficiency go together?
Yes.

dave
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Old 14th April 2003, 12:16 AM   #30
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I agree with everything Dave (planet 10) suggests, push -push in a TL is hard to beat, and to be honest 12" drivers will work well in most domestic situations...However, I might be about to score two Precision Devices 1850 drivers cheap, so I may well end up going totally over the top!
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