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Old 19th October 2010, 07:12 PM   #21
tb46 is offline tb46  United States
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Default JBL GTO1214D

Hi,

This driver is currently available on ebay below $90.--, free shipping:

JBL GTO 1214D CAR AUDIO/STEREO 12" SUB SUBWOOFER 1214 D - eBay (item 380274589025 end time Oct-30-10 20:48:32 PDT)

Regards,
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Old 30th December 2010, 08:56 PM   #22
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This looks like a fun build with good output. I'm curious to know if anyone has built one and taken real world measurements?
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Old 27th June 2011, 03:57 PM   #23
60ndown is offline 60ndown  United States
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why are the 2 drivers mounted like this? why not both on one side?


Click the image to open in full size.

Last edited by 60ndown; 27th June 2011 at 04:00 PM.
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Old 27th June 2011, 04:01 PM   #24
tb46 is offline tb46  United States
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Hi,

1. Reduced distortion.
2. Reduced volume in the S1 to S2 region.

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Old 27th June 2011, 04:12 PM   #25
Djim is offline Djim  Netherlands
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Quote:
Originally Posted by 60ndown View Post
why are the 2 drivers mounted like this? why not both on one side?
Remember the link I gave you, this is again a push-pull set up.
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Old 27th June 2011, 04:18 PM   #26
60ndown is offline 60ndown  United States
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so drivers are wired 'in phase' ?

but function out of phase because of mounting 180* off axis?
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Old 27th June 2011, 04:19 PM   #27
Djim is offline Djim  Netherlands
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Quote:
Originally Posted by 60ndown View Post
so drivers are wired 'in phase' ? but function out of phase because of mounting 180* off axis?
Both cones move at the same time in the same direction. So one of the drivers needs to be wired out of fase.
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Old 27th June 2011, 04:54 PM   #28
60ndown is offline 60ndown  United States
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thank you.

Quote:
Originally Posted by Djim View Post
Both cones move at the same time in the same direction. So one of the drivers needs to be wired out of fase.
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Old 25th July 2011, 03:18 AM   #29
60ndown is offline 60ndown  United States
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you cant keep a real music lover down

Click the image to open in full size.

Tang Band W6-1139SI 6-1/2" Subwoofer

i picked the subs up REALLY cheap,

a little finish sanding/work and this will be the subwoofer for my new boom box build

http://www.parts-express.com/pe/show...number=320-302

yes it sounds great,

not ive tested nothing.

the only math i did was *guess* that the cone area of a 6.5 is slightly less then half that of a 12.

so i divided all the numbers on the plans by 100 and multiplied that number by 42 (42%??)

my thinking is if the proportion of cone area to box physics is the same, i should get similar performance

it definitely gets very low and is smooth in its delivery

thank you Petter Persson for the design

Last edited by 60ndown; 25th July 2011 at 03:27 AM.
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Old 25th July 2011, 05:36 AM   #30
lowpoke is offline lowpoke  Australia
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Oh 60ndown, it's so cute
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