Subwoofer with the box 15-300/8a - Page 3

epa · 6th November 2011, 11:55 AM

top is cubo
bottem br ,port is just a hole in the baffle.

tb46 · 04:05 PM

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,

tb46 · 8th November 2011, 06:03 PM

Hi again,

Just to follow up:

Regards,

hents503 · 14th November 2011, 03:58 PM

HI!

This box is nice,but i need somthing smaler.
150-100L can make somme good ,or only vented box???

tb46 · 15th November 2011, 01:19 AM

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,

hents503 · 15th November 2011, 05:49 AM

http://www.caraudiohelp.com/images/isobaric.gif
You think front to front?

I try it .

tb46 · 01:39 PM

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,

hents503 · 26th November 2011, 09:39 AM

HY!
Now i heard some time isobaric.
Can some type box ise more effectly than isobaric?More kick and db.
And smoler than 150Liter

hents503 · 27th November 2011, 11:26 AM

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?

hents503 · 29th November 2011, 06:17 PM

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.

6th November 2011, 11:55 AM	#21
epa diyAudio Member Join Date: Apr 2010 Location: amsterdam	top is cubo bottem br ,port is just a hole in the baffle. __________________ one good thing about music ,when it hit you feel no pain. so hit me with music.

15th November 2011, 01:19 AM	#25
tb46 diyAudio Member Join Date: Jan 2006 Location: n/a	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, __________________ Oliver

15th November 2011, 01:34 PM	#27
tb46 diyAudio Member Join Date: Jan 2006 Location: n/a	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, __________________ Oliver Last edited by tb46; 15th November 2011 at 01:39 PM.

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14th November 2011, 03:58 PM	#24
hents503 diyAudio Member Join Date: Sep 2010	HI! This box is nice,but i need somthing smaler. 150-100L can make somme good ,or only vented box???

15th November 2011, 05:49 AM	#26
hents503 diyAudio Member Join Date: Sep 2010	http://www.caraudiohelp.com/images/isobaric.gif You think front to front? I try it .

26th November 2011, 09:39 AM	#28
hents503 diyAudio Member Join Date: Sep 2010	HY! Now i heard some time isobaric. Can some type box ise more effectly than isobaric?More kick and db. And smoler than 150Liter

27th November 2011, 11:26 AM	#29
hents503 diyAudio Member Join Date: Sep 2010	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?

29th November 2011, 06:17 PM	#30
hents503 diyAudio Member Join Date: Sep 2010	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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