JBL 2226HPL

[Evo8 fq340]

Guys I've got my project for my 4 JBL 2226HPL the total output impedance for the four will be 2 ohms. My JBL amp is 2,400 watts rms @ 2 ohms and also see my box design and let me know what you think on my project. Regards guys

 

[Mooly]

🙂 Moved to subwoofers.

 

[Inductor]

Guys I've got my project for my 4 JBL 2226HPL the total output impedance for the four will be 2 ohms.

Your speaker is tuned very low (~30/32Hz) with a very long port what is good for the excursion protection.
https://www.jblpro.com/pages/pub/components/2226.pdf

Port 4.2" x 15" x 20" (*)
Internal Total for 2 drivers
27.4" x 34.4" x 15" = 231.7 L / 8.18 ft³
Net - Port - Drivers - Angles
231 L - 24 L - 12 L - 5 L = 190 L / 6.7 ft³
*) note: this comments are made with 2 dimensions only (measurements) available by you (pic)

2x JBL 2226HPL
190 L @ 31 Hz
Excursion@25Hz = ~10mm, excursion@20Hz = ~20mm
(this for RMS power@excursion)
Pmin ~2000 W@3 Ohms (2x drivers)
Pmin ~4000 W@1.5 Ohms (4x drivers)

First, there's no need for such a big port (surface/length), and here I didn't check more,
Second, I'm guessing here that your tuning is to low, why? I'm more inclined to the 35Hz and up tuning, again I don't know your design variables/constraints.
Third, this woofer is a 600 W (RMS) driver (8 ohms/Re 5.0 ohms) so your amp seems adequate (+/-) but needs to address the 1.5 ohms without shutting off or you will have to put the two drivers vs. the two speakers in series.
Next pic (#2), what you get with different tuning and port,
2x JBL 2226H, VB = 190.0 L, FB = 35.0 Hz, 104.6 dB2.83Vm 😀

My JBL amp is 2,400 watts rms @ 2 ohms

 

[bjorno]

Hi,

FYI: Single folded option (T-TQWT) to be used in a Home:

b🙂

 

[Inductor]

In a first glance, and besides the difference in size.
Comparing OP design and bjorno T-TQWT we can find that OP has a "sub" reflex enclosure with F3 60/70Hz and 30Hz@-11.5dB not very dramatic and bjorno's enclosure has F3~33Hz.

 

[Inductor]

JBL 2226HPL and the JBL SR4715 sub

edit: I just got that HPL stands for H and JPL for J
Google Image Result for http://www.diysoundgroup.com/images/large/JBL_fun3.jpg

Did you measure the impedance of the driver, isn't it a 16 ohms driver like the JBL 2226J (I don't know, just asking) 😕
They are obtuse (JBL) about the real impedance of speaker and driver.
JBL Thiele/Small Parameters

The JBL 2226HPL can be the same as the JBL 2226H - 8 ohms [Re: 5.0 ohms/Le: 1.75 mH (H)] or the JBL 2226J - 16 ohms [Re: 10.0 ohms/Le: 3.5 mH (J)]. The speakers for the JBL 2226HPL the JBL SR4715 dual 15" sub say in their references that it's 4/5.0 ohms for the 2x drivers meaning if you connect parallel the 2 drivers it will end as a 5 ohm speaker meaning it's a 16 ohms JBL 2226. But the same thing works for a (2x) 8 Ohms paralleled giving a 4 ohms speaker meaning it's a 8 ohms JBL 2226 driver. It can work both ways. 😀

http://www.jblproservice.com/pdf/SR-X Series/SR4715X.pdf
http://www.jblproservice.com/pdf/SR-X Series/SR4715X-1.pdf
http://www.jblpro.com/pages/mi/mi_pdf/SRX Series.pdf
http://www.poweraudio.net.au/srx.pdf (AU)
http://www.jblpro.com/pub/obsolete/sreries.pdf (obsolete)

The enclosures (4715) from JBL are very close to your design in post#1, showing sometimes a rectangular port and others a unit with (3x) round vents.

The JBL 2226H is one of my all-time favorite midwoofers. And it is capable of producing subwoofer output too, but it is not optimized for that purpose. Most of the things that make it great - its motor structure with shorting rings, it's highly damped cone, it's efficiency - all work best above 50Hz.

So while you can make a good subwoofer using JBL 2226H drivers, I would prefer to use JBL 2235 or JBL 2245 woofers instead. They are tuned for subwoofer use.

Wayne Parham
AudioRoundTable.com: Speaker => Tuning below Fs with JBL 2226H?

 

[more10]

JBL 2226 ported something I built from srx boxes. This a MLTL style cabinet. As a BR the cabinet is probably a -3db bass shelf, but the MLTL helps lifting the curve. My nephew has actually managed to destroy one of the drivers at a party.

JBL 2226H 30 hz "horn" i built. This one sounds completely different. Much better than the ported box.

PL in HPL stands for Protector Less, i.e. without rubber protector for the magnet. They are from JBL assembled speakers.

 

[djk]

SBP - Almighty Subwoofers by Stig Erik Tangen