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Author Topic: anyone built their own cabinet for 2268H subwoofers?  (Read 32827 times)

Jeff Wheeler

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anyone built their own cabinet for 2268H subwoofers?
« on: April 06, 2010, 03:59:32 am »

My bar-owner friend is trying really hard to cheap out on his badly-needed subwoofer upgrade.  He could get by with one SRX718S per side.  I think one SRX728S on one side and no sub on the other side would also work fine, but it's not very easy to explain that to a novice, so bands may not understand it either.  I am going to demo it for him next time I have my rig there.

Another good choice would be for him to just buy two 2268H drivers and roll his own cabinets.  The guy can build anything.  I was thinking of just measuring the vent dimensions of my 728s and having him build two half-sized versions of it, instead of copying the smaller port area of the 718s.  This would save him quite a bit of money since the drivers are available from JBL for about $450 vs ~$800 for a 718S.
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Jeff Wheeler, wannabe sound guy / moonlight DJ

Paul O'Brien

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #1 on: April 06, 2010, 11:21:23 am »

Nobody in their right mind would buy those JBL drivers for a DIY cab when you can buy high quality drivers with similar capability from B&C and others for 1/2 the price or better. If he wants to roll his own have him pick up some B&C TBX100's or Emenince Definimax 4018LF for about $300ea from Parts express and load them in an appropriately sized box. There are other even less expensive drivers he could use too but but output and power handling begins to drop off with the lesser drivers, but then it depends what the needs are, PV Lowriders will come pretty close to these for about $200 a driver.

http://www.parts-express.com/wizards/searchResults.cfm?srchE xt=CAT&srchCat=583
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Tim Weaver

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #2 on: April 06, 2010, 12:13:28 pm »

+1


B&C or Eminence will also tell you exactly what kind of enclosure to build too.

The TBX100 is a hoss.
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Art Welter

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #3 on: April 06, 2010, 01:14:59 pm »

Tim Weaver wrote on Tue, 06 April 2010 10:13

+1


B&C or Eminence will also tell you exactly what kind of enclosure to build too.

The TBX100 is a hoss.


Copying a known good bass reflex cabinet is simple, so the alignment process has already been worked out for the OP.

The 4018LF has an Xmax of 7.9 mm.
The  B&C 18TBX100 has an Xmax of 10 mm.
The 2268 has an X max of 23 mm.
index.php/fa/29267/0/

There is no replacement for displacement.

That said, in a club where people may listen with their eyes, having twice as many speakers costing half as much would look louder  Rolling Eyes .

Art Welter
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Jeff Wheeler

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #4 on: April 06, 2010, 01:32:34 pm »

I didn't really want to spend all day looking at drivers and fooling with WinISD so he can save a few more bucks when he could just copy an existing cabinet.  He really should invest in real JBL speakers so bands will use it, but his PA has many more shortcomings than crappy subwoofers. :/  If I was going to spend any real time on modeling speakers for him I would figure out how to reload his SoundFactor 25s with better HF drivers/horns and put in another amp.
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Tim Weaver

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #5 on: April 06, 2010, 03:40:32 pm »

Building from a plan provided by a manufacturer is actually less work than measuring what you have and then halving the volume.


And my recommendation for the B&C is due to output AND sound quality. A properly built dual 18 with 2 TBX100's is a better sub than an SRX728. It may not be louder, but it is more accurate. I'd pick the B&C sub over the 728 any day of the week. Besides, it's no slouch when it comes to output either!
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Art Welter

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #6 on: April 06, 2010, 07:57:20 pm »

Tim Weaver wrote on Tue, 06 April 2010 13:40

Building from a plan provided by a manufacturer is actually less work than measuring what you have and then halving the volume.


And my recommendation for the B&C is due to output AND sound quality. A properly built dual 18 with 2 TBX100's is a better sub than an SRX728. It may not be louder, but it is more accurate. I'd pick the B&C sub over the 728 any day of the week. Besides, it's no slouch when it comes to output either!

Tim,

How do you define "accurate"?

Have you measured the distortion in both speaker types at various drive levels?
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Gus Housen

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #7 on: April 06, 2010, 09:29:47 pm »

Why roll your own when there is so much good used gear going for 1$ a pound
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Adam Schaible

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #8 on: April 06, 2010, 10:01:30 pm »

Hi Art,

Do you know if that is +/- 23mm, or +/- 11.5mm for the JBL driver?  Either way, that's a lot.... but if the box is tuned correctly for what you're trying to do, I don't really see 8mm of xmax as an issue.

Jeff,

I'd have him build some boxes for the 4018lf.  You can get them for  about 225 each.. if you need a source PM me.  That and $150 of other supplies would be a bare-bones dual 18 sub.  Probably be able to build 2 for the price of 1 srx 728 and I'd guess the dual 4018lf cab would perform pretty close, dare I say better than the srx 728.

The two cabs would probably have about the same resale as a single 728, and depending on his woodworking abilities, he may or may not be able to build a cab that works.  He can save money if his time is considered free.  he could probably sell the cabs for $400/each down the road without too much issue .. so his net cost of ownership would be just $400.  That, to me, is a pretty cheap option.
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Charlie Tappa

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Re: anyone built their own cabinet for 2268H subwoofers?
« Reply #9 on: April 06, 2010, 10:12:04 pm »

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