|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
50.203.104.142
Hello all!My brother is getting the itch to build some bass horns for his system. He will be matching the bass horns up to his 806-8a's on 811b's. He has a HornSub for the lower end.
The woofers that he has on hand are Altex 416-8a's, 418-8z's and EV 15L's.
He currently has the woofers in a vented enclosure that we built some years ago.
I would be curious what suggestions you may have for bass horns, using which drivers...and any pro's or con's.
Thanks!Dan
CLick the picture below to see my systemenjoy the music!
Edits: 05/31/15 06/01/15Follow Ups:
80hz Edgar horn comes to mind. I use them with 416A and 515LG, among others
If anyone needs a set of EVM 15L/B, I have a nice fresh pair that are surplus to my needs. Just sayin'... ;-)
-Ed
Hi Dan
As no front loaded horn designs have been offered here, perhaps you might consider a backloaded horn with direct radiator front: the Mello Monster from the early 60's. The original design is for a 12 inch woofer, but it can be easily modified for a 15 by creating a baffle board for the 15 and extending this out about 2 inches from the cab front. It's good down to about 80 Hz with an EVM 15B.
Good Luck!
Paul
Having serious thoughts about the Jensen Imperial. Repotedly has a cutoff of 30Hz. I don't think it's out of fashion.
gvasale
Need to more clearly define the freq range needed. If already have a horn sub how high will this go before the "bass horn" (more like a mid bass or MR horn) takes over. If the bass sub horn is as usual folded or a TH (tapped horn) then upper bass output freq is limited more so in the TH. At any rate your drivers are OK for midbass horn design although 8-12" horn drivers would do better. Define the needed freq response likely 100Hz and up for a TH sub or about 150 Hz and up for a folded sub. And you need a HF response to at least 1000Hz to match the 802/811 combination. So you need for a LF corner of 150 Hz a mouth perimeter or circumference= at least 1 WL of 150 Hzs = 90 inches (for only 6db peaks due to limited radiation resistance) and volumetric doubling rate of 5 inches. The Throat for 15 inch drivers is around 46 square inches and needed length is at least 1/4 WL of 150 Hz about 23". These then define your basic requirements. A straight horn with about 46 sq inches throat, volume doubling every 5 inches with at least 23" in length and a mouth of at least 90" Cir or Perimeter. Tractrix over Expo flare for MR/MB use. This horn should provide horn reinforcement from 150 Hz to at least 1200 Hzs (3 octave rule ). Horn Response or other programs make it easy but its always good to know the basics. All numbers are off the top of my head but should be close.
Luck
Rafaro
Edits: 06/03/15
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: