2 Attachment(s)
Box and Tweeter recos for 4 Way Build: 2245J (Mid) + 2202H (Low Mid) + 2225H (Low)
Box and Tweeter recos for 4 Way Build: 2245J (Mid) + 2202H (Low Mid) + 2225H (Low).
Hi! Got these components and would want to build a horn based 4 way system with Minidsp and Dirac handling time alignment, eq, and crossover.
Intended use is for a low distortion, high efficiency home speaker.
Max of 80-85db usage range.
Plan to use a Yuichi Horn (but open to suggestions)
Planned xover usages:
2245J: 600hz to 6000hz
2202H: 200hz to 600hz
2225H: 20hz to 200hz
A few questions:
1. Can anybody recommend a JBL tweeter to partner with this design (hopefully of the same vintage). And the best way to implement it given the other parameters (top mount, mated to another horn, bullet???)
2. Any box plan recommendations? Max I can do for width is 18" and Max I can do for height including the horns is 42". Someone said to me to seal the 12" midbass inside the box and give all the free space inside to the 15" woofer to extended it's LF (dunno if Im making sense here haha)
3. Are there any better options rather than a yuichi horn given my xover goals?
4. Any xover slope recommendations (leaning towards 12db/oct BW)?
5. Were there any other JBL products manufactured that featured these 3 components 2245J / 2202H / 2225H?
Thank you in advance for the answers attached are the pics of the components.Attachment 90050Attachment 90051
2202H inthe small seald box
Quote:
Originally Posted by
RMC
I thought you were going without the 2202 since Widget's first suggestion was to eliminate the 2202. My misunderstanding then.
Typically JBL used the 2202 in a 1.6 or 1.7 cu.ft. sub-chamber sealed box. Well, if 6.6 cu.ft. (int. dim.) - 1.6 cu.ft. you're down to 5 cu.ft. already, and have not yet accounted for space taken in the box by other drivers, bracing, vent, horn, etc. You need to calculate all that.
Seems you could be short on volume with the max dimensions you previously mentioned. Something might have to give, or you need to manage your low bass expectations...
Its possible you end-up closer to a 4 - 4.5 cu.ft. net volume. Still worth going for 2235? Or stick with 2225? For you to decide.
Hi RMC,
Interestingly, if You try to simulate the 2202H FR response using 20Lit and 50 Lit sealed box, the result would differ very small, just a few Hertz in LF section lower then 100Hz, so using 2235 driver up to 400~500Hz would neglect such "problem". So if the total box size is a problem, smaller sealed box for 2202H driver can be applied. I would suggest using a piece of 'plastic' pipe (diameter about 32cm) filled with absorber foam as an acceptable material for the sealed box mounted between front and rear baffles.
Regards
Ivica