Your desired "punch and slam" will be produced by your lowest frequency speaker section. For mid range you want to have what is known as "full body" and this comes from using the proper sized horn. Most noteworthy, are the associated problems when attempting to use a compression driver in a compromised size horn to cover the mid range-- because lower mid range is still part of the mid-range. In my opinion, you are on the right track, by using an 8 or 10 inch cone for the lower mid-range horn, and yes, I agree that since every speaker system is a compromise, a 700hz crossover point is about right for this. Just MUST get the crossover to be seamless to your device which should be able to cover the 700-7kHz decade. By the way, if I were told i had to use an 8 inch driver, for horn loading the lower mid range, I would choose the Eminence Delta PRO-8. A ppsl bass section, along with a proper horn for each section of mid range (lower, upper) and a superb tweeter on top would be a world-class speaker system (if you get the crossovers right).
+1
or if you have the chance to move up in size, i'd go blindly with a 12FH500.
(i'll use myself his big brother the 18FH500 from +/- 450hz and downward)
The B&C 8pe21 is will cover that range very well. I wouldn't use it below 80 cycles. Than it may get tricky and a 10" may be better if you can find one that will go past 600 on the top end in a big horn.
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Thumbs up !!
Agreed .... 8pe21 is a fine unit for a mid-bass horn. For a compact, tight fitting system, I'd probably choose to cross the bass-to-mid bass somewhere between 8- and 100 cycles
Agreed .... 8pe21 is a fine unit for a mid-bass horn. For a compact, tight fitting system, I'd probably choose to cross the bass-to-mid bass somewhere between 8- and 100 cycles
Again, thanks Pooh and Scott. Based on the advices and a proven design by Inlow, I will settle for the 8pe21 and the 135hz horn, which I hope to "mod" a bit to get a tad more low end. A bit longer and perhaps a bigger mouth (if that dies not mess up the low end)
Thereafter I might try some of the other drivers as my experience grows.
Thanks for all input and suggestions!
Thereafter I might try some of the other drivers as my experience grows.
Thanks for all input and suggestions!
You may want to slow the flare rate if you are thinking of a bigger horn (great idea) Maybe John Inlow has a plan for you-
BC 8pe21 drivers ordered
You could do a lot worse
, 77 Hz FLH, so good to 80 Hz in a HIFI/HT app:GM
I put the datas into Hornresp - looks very promising sorry for crappy picture but my Hornresp-pc is not connected to the internet.
http://www.hifisentralen.no/forumet/diy-og-utvikling-ha-yttalere-forsterkere-etc/80792-midbass-15-horn-elementer-2.html#post2425929
Do the tiny bumps have any noticable effect? And will they increase as more effect is fed into the ?
sorry for crappy picture but my Hornresp-pc is not connected to the internet.http://www.hifisentralen.no/forumet/diy-og-utvikling-ha-yttalere-forsterkere-etc/80792-midbass-15-horn-elementer-2.html#post2425929
Do the tiny bumps have any noticable effect? And will they increase as more effect is fed into the ?
Got rid of the bumps by increasing back chamber from 1.9 to 3 liters
Midbass 15" horn-elementer - Side 2
Midbass 15" horn-elementer - Side 2
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