I retried with what I have, I really dont think its going to work as a 2 way! the sound is very disapointing, the lower mids just don't have that punch, not impressive at all. I think my next step is to add a cone mid. to cover say 250 hz through say 3k.
I orded 1 beyma 8MI100 8" mid . http://profesional.beyma.com/ENGLISH/producto.php
Has anyone have a back round with this driver ?
I guess Ill play with it and see how the improvements are.
I doubt if anyone has experience here with that driver..its is a JBL forum after all. Aside from that the response looks smooth but how it will voice is something only time will tell.
I just wonder why you chose that driver and not a JBL 2118 or search for a 2202 or E110 cores and recone to 2122 spec?
Why I choose the driver brand ? Because I can have one here too try in just a few days, nothing taken from JBL, were going on ebay paying more than I should and time for reconing/and might very well do that before its done.
right know I'm just playing and gathering info.
Just started listen to the new 8" mids, wow what a improvement.
Before adding a mid I was so disipointed with the system that at the time I thought it would never sound good.
Now Im sure Im on the right track now. With the new mid. it just brought the good qualitys out in the other drivers. the tight bass of the tad's, and never realized the how good the 2420 driver sounds(even with a not so good sounding horn 2345).Im learning what always been said here.
And most of all I would like to thank all of the members here on this great forum for all of the good advice and help.
I think I need to try a few horns and see what I like , any advice ? I don't like harsh sounding on the upper range.Maybe something that would sound open , clear , well defined. And again thank to you all.
Hi Kartsmart,
We need clarification of your current kit. I think it is 2420 with 2345, generic 8" bass/mid, and TAD 1602 woofers. And your crossover? Are you using frequency compensation with that horn? You should be, I believe. What are your crossover frequencies now?
David
Edit: I'm not familiar with the dbx driverack. Does that allow you to dial in EQ by telling it what components you are using? Or the type of horn, etc?
I'm ready to try the 2123 midbass driver and I need to know 4 things before I start.
1 what would be a good starting point on the size of sealed box VB.
2 what size is the cut out for ft mount 9" ?
3 is there a shape of a box that works best ?
4 how much stuffing ? to start with.
0.5 cu ft
9"
1.25 : 1.0 :0.8
full
Got it , thanks
Giskard would that be .5 cu ft with or with out driver displacement.
0.5 cu ft gross.
11-7/8" x 9-1/2" x 7-5/8" internal dimensions.
Once again thanks, Its time to get to work.
How would one tell if the magnets are getting weak on a 2420 driver ?
Put a flat blade screwdriver in the throat (hold on to that sucker, to get used to the "feel"). Good charge will pull hard. This was told to me by wonderful woman at JBL years ago. It's not a measurement, by any means, but you'll quickly learn the difference between a strong and weak magnet.Originally Posted by kartsmart
How would one tell if the magnets are getting weak on a 2420 driver ?
Reduced output for same input signal, loss of upper HF response.
I have a pair of 2426J's if you want to borrow them until you see which direction you are going.
After March I should be making some trips to Cleveland and other northern cities and might be able to stop by.
Ron
How would one tell if the magnets are getting weak on a 2420 driver ?
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