Subwoofer with the box 15-300/8a - Page 3 - diyAudio
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Old 6th November 2011, 11:55 AM   #21
epa is offline epa  Netherlands
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Location: amsterdam
top is cubo
bottem br ,port is just a hole in the baffle.Click the image to open in full size.
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one good thing about music ,when it hit you feel no pain.
so hit me with music
. hr driver db
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Old 6th November 2011, 04:03 PM   #22
tb46 is offline tb46  United States
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Location: Texas
Hi Y'all,

After trying this woofer in a number of Hornresp models, the only subwoofer for the driver "the box 15-300/8A" that I kind of like is a front loaded horn (FLH) of about 362 L_net, I'll attach the Hornresp Input and SPL screens. For a suggested construction (and size comparison) see the Vitavox Thunderbolt (estimated net volume = 560 Litres) The unofficial Vitavox website- Thunderbolt. There are lots of nice 15 inch driver FLHs out there, and with Hornresp (and AkAbak) we can actually simulate their response.

Regards,
Attached Images
File Type: jpg the box_15_300_8A_FLH_Input.jpg (34.1 KB, 164 views)
File Type: jpg the box_15_300_8A_FLH_SPL.jpg (38.1 KB, 162 views)
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Last edited by tb46; 6th November 2011 at 04:05 PM.
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Old 8th November 2011, 06:03 PM   #23
tb46 is offline tb46  United States
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Hi again,

Just to follow up:

Regards,
Attached Images
File Type: jpg the box_15_300_8A_FLH2_Input.jpg (37.7 KB, 134 views)
File Type: jpg the box_15_300_8A_FLH2_SPL.jpg (27.0 KB, 131 views)
Attached Files
File Type: pdf FLH2_the_box_small.pdf (21.0 KB, 29 views)
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Old 14th November 2011, 03:58 PM   #24
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HI!

This box is nice,but i need somthing smaler.
150-100L can make somme good ,or only vented box???
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Old 15th November 2011, 01:19 AM   #25
tb46 is offline tb46  United States
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Hi hents503,

You could try using two drivers in an isobaric configuration: bass reflex (vented), volume=100L, port I.D.=15.24cm, port length=15.24cm. Should be easy to try out if you already have a box, just mount two driver in clamshell fashion, and tune the box.

Obviously, all of this depends on the accuracy of the T/S paramerters.

Regards,
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Old 15th November 2011, 05:49 AM   #26
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http://www.caraudiohelp.com/images/isobaric.gif
You think front to front?

I try it .
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Old 15th November 2011, 01:34 PM   #27
tb46 is offline tb46  United States
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Hi hents503,

Yes, front-to-front is usually the easiest to try. Obviously, the electrical polarity has to be reversed on one of the woofers, i.e.: they need to move together in the same direction. For maximum distortion cancellation they should be mounted front-to-front (clamshell) or back-to-back (in a tunnel).

Regards,
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Last edited by tb46; 15th November 2011 at 01:39 PM.
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Old 26th November 2011, 09:39 AM   #28
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HY!
Now i heard some time isobaric.
Can some type box ise more effectly than isobaric?More kick and db.
And smoler than 150Liter
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Old 27th November 2011, 11:26 AM   #29
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Hy!
question,can 1x mccauley b184 18´´ driver or 2x the box 1-300-8a 15´´ drivers ?

I don´t find mccauley sensitiv 1m/1w?
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Old 29th November 2011, 06:17 PM   #30
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sory, mccauley b1840 is correct name
I simulated bass box pro6 and i got125db into 120L@50hz ...?
And 2x the box 15/300/8a into 300L vented box is 125db max
I think mccauley driver is better? much moor kick and db and smal box?

Henri.
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