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Beyma 12BR70 plus ??Mid?? plus JBL 2404H to compete with JBL 100 re-issue?
Hello all: Thought I'd start a new thread since I screwed up in my introductory post. I have a nice old pair of EV Marquis speakers with beautiful cabinets that I'd like to re-purpose for my workshop, or even the first floor of our Mid Century modern house. My intent is to compete with the sound I hear from the new JBL 100 re-issues at $4000 list. The EV cabinets have an interior volume of 3.4cf. (interior is 17.5'w by 13"d x 26.5"H) The back 3/4 ply has (4) 1/4" x 10" long slot vents, which I assume I will simply replace, or build over-top.
I have NIB JBL 2404H for tweeters.
Am looking at the Beyma 12BR70 for a woofer, ($126 each from US Speaker) and need recommendations for a mid to pair up with that to work with a high crossover point for the 2404. I was looking at the Beyma 6MI90 mid today, at about $120 each. JBL has used the 2404H as low as 3500khz, but normally it is recommended to cross higher, like 5khz. The EV cabinet is pretty wide old-school, being 19" on the outside. I could theoretically fit a 15" in there too, if it will work with the cabinet volume. The 2404H can sit on top if needed, but prefer to have the woofer and mid inside the existing cabinet. No subwoofers desired, and a minimum overall output at 90db with 1 watt.
In my introductory comments, I mentioned I have no idea of how to build crossovers. I do have an active stereo 3 way CDM crossover I can use to try out ideas, but in the end would really appreciate help building a passive crossover.
Any comments or suggestions?
I have NIB JBL 2404H for tweeters.
Am looking at the Beyma 12BR70 for a woofer, ($126 each from US Speaker) and need recommendations for a mid to pair up with that to work with a high crossover point for the 2404. I was looking at the Beyma 6MI90 mid today, at about $120 each. JBL has used the 2404H as low as 3500khz, but normally it is recommended to cross higher, like 5khz. The EV cabinet is pretty wide old-school, being 19" on the outside. I could theoretically fit a 15" in there too, if it will work with the cabinet volume. The 2404H can sit on top if needed, but prefer to have the woofer and mid inside the existing cabinet. No subwoofers desired, and a minimum overall output at 90db with 1 watt.
In my introductory comments, I mentioned I have no idea of how to build crossovers. I do have an active stereo 3 way CDM crossover I can use to try out ideas, but in the end would really appreciate help building a passive crossover.
Any comments or suggestions?
Comments
I'll look into your other recommendations. Thank you!
Thanks for the suggestion.
& those JBL's tweets are keepers
I question whether this exercise is worth the trouble, vs just buying different drivers. But, I never seem to be able to sell things off I'm not using, and the JBLs' are here. And, I like the sound of them.
I was shocked when I took the back off those speakers today. I knew that they had the alnico magnet SP12 woofers, but for some reason I thought they had the T35 tweeters. They have T25A midrange units. So, the horrible upper frequencies I'm hearing are either due to the compression driver, or possibly the crossover. (?) The T25 are not very well thought of. I'm thinking of getting out my TDM 3 way crossover, and mounting the JBL's in a small chunk of plywood, and just run the woofer up to 4500 with a 24db per octave crossover. Just to see how they sound. The EV woofers are run far beyond that in some applications, however, I have no idea how they sound.
Right now, the woofers sound good, but no serious punch. The upper freq are horrid. before replacing the woofer, I want to see how it fares with the crossover and mid compression unit out of the picture.