JBL 2215 in a 4 way design

f.bcn · 3rd January 2007, 06:18 AM

I am searching for a box for my JBL 2215 15" below 300hz for a 4 way design. but i don't have any information about this speaker (qts, qes,...). just fs 20hz. the filter for this design are active with dcx 2496.
what about SB with 160 liters ? for the rest low mid with tractrix horn (rcf L12P110K) upper mid with JBL2441 and for the high a fostex T900A.
sorry for my poor english and happy new year.

EspenE · 3rd January 2007, 07:28 AM

Parameters for 2215A (2215H is identical) are:

fs: 20 Hz
Re: 5,7 ohm
Qms: 5,5
Qes: 0,22
Qts: 0,212
Sd: 900 cm2
Vas: 736 l
Xmax: 4,1 mm
Le: 1 mH
Pe: 100W

SPL @ 1W 1 m: 96,2 dB

The 2215 would work well in a vented box of 90 liters tuned to about 38 Hz. Port dia 11 cm, port length 13 cm.

Good luck & happy building.

PS:
T/S parameters for most of JBL transducers is here: http://www.jblproservice.com/pdf/Thi...arameters.pdf.

EspenE

sreten · 3rd January 2007, 09:00 AM

Hi,

I like the look of around 180L tuned to 28Hz for good in-room bass.

/sreten.

EspenE · 3rd January 2007, 09:11 AM

This will of course also be good - somewhat at the expense of power handling.

It all depends on room, amplifier, max SPL, etc.

EspenE

f.bcn · 4th January 2007, 07:56 PM

OK a lot of thanks for the reply.

3rd January 2007, 06:18 AM	#1
f.bcn diyAudio Member Join Date: Sep 2002 Location: LYON FRANCE	JBL 2215 in a 4 way design I am searching for a box for my JBL 2215 15" below 300hz for a 4 way design. but i don't have any information about this speaker (qts, qes,...). just fs 20hz. the filter for this design are active with dcx 2496. what about SB with 160 liters ? for the rest low mid with tractrix horn (rcf L12P110K) upper mid with JBL2441 and for the high a fostex T900A. sorry for my poor english and happy new year.

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3rd January 2007, 07:28 AM	#2
EspenE diyAudio Member Join Date: Jun 2003 Location: Oslo	Parameters for 2215A (2215H is identical) are: fs: 20 Hz Re: 5,7 ohm Qms: 5,5 Qes: 0,22 Qts: 0,212 Sd: 900 cm2 Vas: 736 l Xmax: 4,1 mm Le: 1 mH Pe: 100W SPL @ 1W 1 m: 96,2 dB The 2215 would work well in a vented box of 90 liters tuned to about 38 Hz. Port dia 11 cm, port length 13 cm. Good luck & happy building. PS: T/S parameters for most of JBL transducers is here: http://www.jblproservice.com/pdf/Thi...arameters.pdf. EspenE

3rd January 2007, 09:00 AM	#3
sreten diyAudio Member Join Date: Nov 2003 Location: Brighton UK	Hi, I like the look of around 180L tuned to 28Hz for good in-room bass. /sreten.

3rd January 2007, 09:11 AM	#4
EspenE diyAudio Member Join Date: Jun 2003 Location: Oslo	This will of course also be good - somewhat at the expense of power handling. It all depends on room, amplifier, max SPL, etc. EspenE

4th January 2007, 07:56 PM	#5
f.bcn diyAudio Member Join Date: Sep 2002 Location: LYON FRANCE	OK a lot of thanks for the reply.

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