View Full Version : Does any company make 5 1/4s designed for very small sealed enclosures?
04-27-2001, 06:08 PM
I'm having a helluva time tring to get good output out of my 5 1/4s in the 130hz-400hz range. 200hz and 400hz are peaked on the EQ, tonally they sound very good. But I'm limited in spl to only about 94db, and thats a little more than 1/2 throttle on my xtant 2200ix. The speakers are door mounted in small sealed enclosures. If I run the speakers free air they have a bit more overall spl, but have no meat with drums and male voices that fall in the 130hz to 400hz range. 94 dbs ok for SQ comps, but my sound needs alittle more balls for the drive there! Anyone have any ideas?
04-27-2001, 06:51 PM
Try venting the enclosure and use some pressed fiberglass material to add some resistance to the vent . Putting those mids in a small enclosure is probably making the resinant frequency a little too high. The vent should help with that and smooth the response out some.
INSTALL JUDGE 4 LIFE
04-27-2001, 07:38 PM
Try Dyanaudio ap-vents! and cascade deflex pads!
97 HONDA ACCORD,*MB QUART*XTANT*SONY*JL AUDIO*STREETWIRES*17"ANTERA 143'S
04-27-2001, 11:37 PM
Thanks Sean and Jeff
I think I will try Jeffs Idea, because I don't want to make a hole in the enclosure, only to find later the dynaudio vent won't fit. Thats a vario-vent (adjustable)?
Jeff any idea how big a hole is needed for the vent? And does it need a flat mounting surfice?
BTW Jeff did you get those deflex pads from Ira? From your response it sounds like you may be a believer.
[This message has been edited by sqvan (edited April 27, 2001).]
04-28-2001, 12:01 AM
the dynaudio varivents are awesome. i use them on my home and car drivers, and they are not that expensive. what is limiting you is that you are basically using those drivers as a closed backed midrange, but they need to breathe to do their job and play low.
04-28-2001, 01:00 PM
Jeff is right on target with what i had in mind . We are using some of the Dynaudio vents in a car to vent into the fender well they work great !They do need a flat surface tp mount them on .
04-28-2001, 03:31 PM
Forget the Dynaudio AP vents and just get a pair of MW150 drivers. They'll go lower and give you better freq. response in a .1 cube box than just about any other 5.25 on the planet.
IASCA PRO 601+ Street
Audiomobile, Scosche, and Ampman Audio
04-28-2001, 11:53 PM
I think my final decision comes down to a question of cost. Since I don't have a flat area to mount the ap vents to. Rebuild the enclosure to use vents or buy a 5.25 to work in the one I have. Man you gotta love this stuff, every system has it's own unique little problems to fine tune huh? I have been in cars that have too much output in the range I'm lacking. I suspect when I run my 5.25 free air, I get something funky happening inside the door. Don't know what it is, but it's weird!
04-29-2001, 02:27 AM
0.2 cubic foot? Try Focal 5K013L's from madisound. F3 of like 82hz with a Q of .7 in that space.
Carlton Duty Jr.
Arc Audio/Rainbow USA
04-30-2001, 11:54 AM
I would also look into the ID Chameleon 5's. I used a set for a short while and when I was running them freeair I was less than thrilled with them. Then I took Del Harris' suggestion to place them in a .1ft3 enclosure and voila. Musicality was night and day. Midbass response was there for the first time and the staging of any instruments in the subass/midbass woke right up. Not saying they are perfect but damn was I impressed with them. Just giving you additional options.
98 VW Jetta TDI
IASCA Certified Judge & Pro Ultimate 601+
My Home Page (http://members.nbci.com/BetaTDI/)
04-30-2001, 02:58 PM
I'm in the 0.1 range. I played around this past weekend with x-over points.
My x-over points were, subs 50- hz down, 8s- 50hz to 90hz,(huge peak between 100hz and 130hz), 5.25 componet set- 160hz up (intentional gap)
New x-over points, subs- 50hz down, 8s-50hz to 500hz ( added xtant parametric Eq module to tame offending peak), 5.25 componets 500hz up.
Before I could never go above 100hz with the 8s because of a nasty in car resonance. Now with the 8s doing more work, I get a bit more out put in that 160hz thru 400hz range.
The down side of the new x-over points is
(1) There is still a hint of resonance at around 130hz.
(2) It sounds like at 500hz at high volume 5.25s are still being pushed a little too much.
I think with a little more tuning time I'll work out the resonance. Also I talked to xtant about sending me some 700hz x-over chips to try. I'm confident the 8s can go to 700hz.
If the 700hz x-over point don't do it. I think I have to find a driver for a 0.1 enclosure, with good responce from 500hz thru 3.5khz
04-30-2001, 03:06 PM
Who makes the MW 150? Sounds like a Dynaudio #.
04-30-2001, 03:25 PM
Yep, dyn makes the MW150. What kind of 5.25's do you have now?
Ama Ultimate 1-300
[This message has been edited by Slick (edited April 30, 2001).]
04-30-2001, 03:35 PM
All excellent sugestions. I think after I do Impossible Bills Key event, I'll talk to him about trying some speakers. I think he carries just about every brand mentioned here. I really do like my 5.25s but, I have to admit there inadequacy,s and move on to something designed more specific to my application.
[This message has been edited by sqvan (edited April 30, 2001).]
04-30-2001, 03:36 PM
Diamond hex old style.
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