JBL 2242H mounting info - AVS Forum
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post #1 of 77 Old 12-06-2012, 04:41 PM - Thread Starter
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So I can't for the life of me find the mounting and flush mount info on the 2242H. They should be arriving in the next week. I need to make a couple boxes. I'm going with 2.2 CF sealed (driver and bracing should make optimal 1.8CF inside) to be used as stands for my new JTR Noesis's. I have searched high and low and can't find nothing! Unless I'm blind, which could very well be true, maybe thats a side effect of crazy bass? lol

Any help would be great.

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post #2 of 77 Old 12-06-2012, 04:54 PM
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http://www.jblproservice.com/pdf/Discrete%20Sales%20Models/2242H-HPL.pdf

How much power will you be using?
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post #3 of 77 Old 12-06-2012, 05:03 PM - Thread Starter
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Sweet Jebus! thanks Wrager! 1000 watts per sub. Used from 40hz to 150hz.

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post #4 of 77 Old 12-06-2012, 05:18 PM
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Should be awesome N8! Post back with your impressions. There's just something special about these.
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post #5 of 77 Old 12-06-2012, 05:21 PM - Thread Starter
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Got them for a really nice price too! They are used but in really nice shape! Even if I have to re-cone them, it's still a nice win! Now the building begins! Mark from Mach 5 also said he's gonna let me test out the new LLE prototype when he's done in a week..... O baby!!!!!!!!!!!

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post #6 of 77 Old 12-06-2012, 05:56 PM
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I'm with ya! I love a great deal too. I got both of mine in a 5749 cabinet for $450. I had to reconfigure the cabinet to fit behind the screen, but it was such a smokin' deal!
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post #7 of 77 Old 12-06-2012, 06:04 PM - Thread Starter
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Well, I got them for close to that but no cab, dammit you got a better deal and now I'm sad! lol, not like I really want to ship that baby across the country too bad though biggrin.gif

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post #8 of 77 Old 12-06-2012, 06:05 PM
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N8 are these gonna be for midbass use in stereo for the L & R? Or split LFE? Smokin deal!
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post #9 of 77 Old 12-06-2012, 06:12 PM
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The pro cinema guys use what's called a B-6 eq setting to reach 25 hz with 2242's. It is +6 dB @25 hz with a Q= 2.0. High pass at 20 hz. They didn't specify the filter typ, though.
Not sure where they low pass. I'll keep looking.
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post #10 of 77 Old 12-06-2012, 06:36 PM - Thread Starter
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Quote:
Originally Posted by gpmbc View Post

N8 are these gonna be for midbass use in stereo for the L & R? Or split LFE? Smokin deal!

i'm gonna try it both ways and see what sounds best.

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post #11 of 77 Old 12-07-2012, 12:53 AM
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"Should be awesome N8! Post back with your impressions."

+1

just watch your spl monitor for the sake of your ears. you are entering into the land where the sound will be so clean that it might not sound as loud as you are used to and that could be ear damaging.

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post #12 of 77 Old 12-07-2012, 02:32 AM
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Welcome to the club . I have been using 4 of these in 4645c's. Your gonna love what they do for music, so clean .
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post #13 of 77 Old 12-07-2012, 02:37 AM
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Why only to 40hz ? They sound great to about 22hz in the 4645c cabs, but you have to filter them at 20hz and +6db at 25hz. its called a b-6 eq boost . I found a bunch of info over at filmtech.
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post #14 of 77 Old 12-07-2012, 06:40 AM
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Would a pair of these make for a nice mid-bass type setup? Would they blend well with a pair of sealed Dayton HO18's? I would, of course, EQ them with the Minidsp that I am going to use with my sealed Dayton HO18's. If these would indeed make for a nice mid-bass setup, how much power would they need and what type and size enclsoure would be good for them? I will be using 2226 for the lows in my soon to be completed Seos-12's. So that would make 3 of the 2226's for the LCR's, plus 2 sealed Dayton HO18's for the subwoofer duty, and possibly a pair of 2242's for use as mid-bass cabs. Silly? Bad idea? Good idea?
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post #15 of 77 Old 12-07-2012, 07:16 AM
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I see your using the small sealed boxes, so ya you should be good for your freq range. What amps will you be using ?
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post #16 of 77 Old 12-07-2012, 07:53 AM
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Quote:
Originally Posted by Dezmond View Post

Why only to 40hz ? They sound great to about 22hz in the 4645c cabs, but you have to filter them at 20hz and +6db at 25hz. its called a b-6 eq boost . I found a bunch of info over at filmtech.

What filter type are you using for your low pass at 20?
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post #17 of 77 Old 12-07-2012, 12:21 PM - Thread Starter
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Quote:
Originally Posted by Dezmond View Post

Why only to 40hz ? They sound great to about 22hz in the 4645c cabs, but you have to filter them at 20hz and +6db at 25hz. its called a b-6 eq boost . I found a bunch of info over at filmtech.

No need for anything less than that. I've got 4 x 21's and 4 x 18's dishing out the ultra low end. I want these for some killer mids. From the sims, they look to be +10 dB's higher on average from 60hz and up. Just what I'm looking for.
The amp will be a bridged ep4000 for the both. very close to 1000 watts each. It's models very well for what I want it to do.

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post #18 of 77 Old 12-07-2012, 12:37 PM - Thread Starter
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So I've just been thinking, what are you guys using to xover when in stereo with the mains? minidsp? merchand basis? I've never done it that way before but I'm assuming I run a Y off the pre-out on the L & R (though I run xlr's on my 80.3 and maybe the rca's are also active at the same time? Will have to try that out) Either way, into my xover, then to my amp. Is that right? if thats the case, the minidsp would probably work fine. I'd use my DCX but it's full LOL
I'm gonna need to buy something to make it work even If I just use the LFE channel, though thats not really the goal but if for some reason it sounds better then...... Sure would be nice to run the 2242's up to 200hz, they still will have some serious spl.

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post #19 of 77 Old 12-07-2012, 12:50 PM
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I'm using a behringer 31 band eq , it has adjustable low cut filter down to 10hz . I set the filter to 20hz then add +6db on the 25hz band. I was using 2 crest v1500's to power each pair, but one of the amps had a meltdown, so now i am using 2 ep2500's.
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post #20 of 77 Old 12-07-2012, 01:11 PM - Thread Starter
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Well, I've got a carpenter friend building the boxes as we speak, I'm already building the box for the Mach 5 LLE prototype and don't have the room. I know I could use a behringer again but I like to try out new stuff. I think the minidsp will do the job, I've always wanted to try one out.

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post #21 of 77 Old 12-07-2012, 03:29 PM
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Quote:
Originally Posted by N8DOGG View Post

No need for anything less than that. I've got 4 x 21's and 4 x 18's dishing out the ultra low end. I want these for some killer mids. From the sims, they look to be +10 dB's higher on average from 60hz and up. Just what I'm looking for.
The amp will be a bridged ep4000 for the both. very close to 1000 watts each. It's models very well for what I want it to do.

Wow....I thought a single 2245 was all I needed wink.gif
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post #22 of 77 Old 12-07-2012, 04:01 PM
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if the receiver will be used to power the noesis, the highest crossover point will be whatever the max is inside the receiver unless the noesis rolloff higher than that which i seriously doubt.

driving the noesis with a big amp might be worth an experimentation, as it may give enough midbass performance to eliminate the need for the 2242's.

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post #23 of 77 Old 12-07-2012, 04:18 PM - Thread Starter
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The Noesis will have 1000 watts each, as do every other speaker in the 7 channel setup lol Coming from the T12's, they were very good but not punishing, I want punishing midbass, enter the 2242H's biggrin.gif
I probably wouldn't have bothered with new subs but I needed stands for my Noesis anyways, so I figures, whats better, boring old stands? or bad ass stands with subs in them!!! I think you can see it was an easy choice cool.gif

I bought the minidsp and all the cables a few minutes ago.

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post #24 of 77 Old 12-07-2012, 04:30 PM
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ah, i see.

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post #25 of 77 Old 12-07-2012, 06:24 PM
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I have been using the 2241h's in the sr4719x cabs for over 10 years now. They are the bottom end of my front channels and the rear channels have the 2241 different cabs. I have them running 50 down and they are utterly devastating. I used the entire system without a true LFE channel until I built my LMS cabinets. No one I knew had any idea I did not have a "TRUE" subwoofer installed for this system at the time. I think you will be extremely happy with the performance of those drivers. My drivers are in some seriously large ported cabinets though, so I cannot say how they would do in cabinets of lesser volume. All I can say is that JBL makes some serious drivers and they do deliver on performance.

Good luck,

Robert


By the way, I use DBX driveracks on each channel of my system for crossover duty I set the speakers to large on the Integra processor and adjust things from there. By the way, just for fun, the other night, I was watching Peter Frampton Live in Detroit and I wanted to feel the kick in the chest and I ramped up the midbass signall and it was like being at the concert. The good thing about the Driverack is the programs can be set and pulled up at a whim and you are off to the races. I am currently reworking the system in order to finally finish the installation, so it is a work in progress.

 

 

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post #26 of 77 Old 12-07-2012, 07:17 PM - Thread Starter
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Thanks for the info Robert! The Driveracks certainly looks pretty interesting, kinda similar to the DCX maybe? They seem to do the same function anyways. These boxes are just for trying out, they are not costing me anything to build, so it will be a fun experiment. Most builds with the 2242H use big ported boxes but with the small sealed they roll off pretty steep after 50hz but still do measure quite well above 50hz. Not as good as the big ported boxes of course but thats to be expected. I'm looking forward to testing everything out but I'll have a week or 2 before everything gets here. The added midbass to go along with my speakers is what I'm after, they have their strengths and thats what I'm building for.

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post #27 of 77 Old 12-07-2012, 07:54 PM
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That is what I think also. I would like to kick around a few thoughts as you get going with it. Hopefully, you get the desired effect. I completely enjoy the sound I get from mine, no matter what others may say- and believe me, I have had some people tell me to dump them and just delete the "sub-mid bass from my setup and cross my mains and surrounds at 80 or 120 and let the LFE do all the other stuff. I do not like it that way, so I say go for it and enjoy. I am!

Take care,

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post #28 of 77 Old 12-08-2012, 02:41 AM
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Quote:
Originally Posted by robertcharles View Post

I was watching Peter Frampton Live in Detroit and I wanted to feel the kick in the chest and I ramped up the midbass signall and it was like being at the concert.

How did you ramp up the midbass signal in the source? Or do you mean you EQed the mid bass range to have a bump on the dbx?
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post #29 of 77 Old 12-08-2012, 01:03 PM
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I EQ'd the signal and the chest thump is out of this world. Ordinarily, it is just fabulous, but for the music dvd's, eq really lets you get the most out of the drivers. I never eq anything when watching films, but one day I just wanted to see what the drivers could do and voila! it was like magic- a kick in the face and chest and I still had tons of headroom to play with.

Thanks,

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post #30 of 77 Old 12-09-2012, 12:08 PM - Thread Starter
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Well, got the 2 boxes done as well as the box for the Mach 5 LLE prototype. JBL boxes are 2.0 CF and the LLE box is 3.5 CF. Now I just need all my stuff to show up so I can start painting and get my Noesis to show up smile.gif

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