BMS 4590 and JBL 2397 - a good combination?

[nycone]

I picked up a pair of JBL 2397 with 2328s and was thinking of marrying them to a pair of BMS 4590s. Does anyone have experience with a setup of this nature?

I'm new to horns and I'm not aware of the pitfalls and tips one might need. Advice is welcome.

[allen mueller]

I ran essentially this same combination with the exception that the horn was a Westlake clone style 2397. I thought it was a good match and enjoyed the combination alot. The set up was using the standard BMS passive for the x over on the coax and an active crossover for horn set somewhere between 1k and 1.2k.

[nycone]

Thanks for the reply.

As I said, I'm new to horns, any advice for the bottom end?

[Lee in Montreal]

Thanks for the reply.

As I said, I'm new to horns, any advice for the bottom end?

Any woofer that goes up to 800Hz. For home duty (excluding loud home cinema), perhaps a 15" 2235h for its sweet lower extension down to 20Hz. Or even better, a 2235h for 20-50Hz and a 2225h for 35-800Hz. It all epends on how involve you want the project to be.

[pos]

The 2397 will have directivity issues (lobes) in the UHF, and you will likely need a tweeter. So using a compression driver with an integrated tweeter like this BMS is a bit of a waste IMHO.

Concerning the woofer, you should also take in account the very large directivity of that horn, and you will need a small woofer to avoid having a gross directivity mismatch at the crossover frequency.
A 12" crossed over at 1khz will likely be a good directivity match.

[nycone]

The 2397 will have directivity issues (lobes) in the UHF, and you will likely need a tweeter. So using a compression driver with an integrated tweeter like this BMS is a bit of a waste IMHO.

Concerning the woofer, you should also take in account the very large directivity of that horn, and you will need a small woofer to avoid having a gross directivity mismatch at the crossover frequency.
A 12" crossed over at 1khz will likely be a good directivity match.

I'd thought the 2397 was a decent match for the coax. I considered a 2380a instead or an Itawa. Did I assume incorrectly? What do you think an ideal horn would be for the BMS 4590?

Regarding the low end, are there designs folks like? The driver is only part of the solution, how are folks running them? In horns? Ported boxes? Sealed boxes?

[Lee in Montreal]

I'd thought the 2397 was a decent match for the coax. I considered a 2380a instead or an Itawa. Did I assume incorrectly? What do you think an ideal horn would be for the BMS 4590?

Regarding the low end, are there designs folks like? The driver is only part of the solution, how are folks running them? In horns? Ported boxes? Sealed boxes?

I am petty sure that if you googled "BMS 4590" you'd find thousands of exemples of how the BMS driver was used succesfully.

The answer to your second question is easy: In horns. Ported boxes. Sealed boxes. Dipole. However you like it, or for whatever purpose. It all depends on your tastes and "fantasies".

BTW I suspect that the bigger Iwata will be a better horn for a two way system. Lower cut-off and higher reach. But it is much bigger than a 2397.