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Author Topic: still wondering  (Read 20162 times)

Timmahh

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Re: still wondering
« Reply #30 on: July 17, 2004, 09:48:14 pm »

Hmm lets see,  Ive been playing bass for near 26 yrs now.  In my current band I m set up in about 15 to 20 minutes flat. tuning included.   I own the foh speaker stacks, the foh board, the majority of the foh fsx, all the power amps, most of the crossovers and the dbx eqs. ummmmm.... most of the keyboard rig.  actually its easier to say i Do Not own the drums, guitar rig, guitars, 2 of the 3 pair of monitors and the lil mackie mixer used for monitors,  i also own all the cpu recording equip.

Maybe its just easier to say I am an equipment junkie!@!  an afliction/addiction that society still frowns upon...lolol

m2c
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iJam

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Re: still wondering
« Reply #31 on: August 12, 2004, 03:43:59 pm »

Has anyone produced a prototype yet, either the 36x36x13 one driver box or the 24x24x36 two driver box?  

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Roy Eikamp

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Re: still wondering
« Reply #32 on: August 15, 2004, 02:32:06 pm »

Would like  some feed back on William Cowans's "horn sub jr."?
How would two HL-10's perform with this enclosure?
web sight is http://diy.cowanaudio.com  .

v/r Roy A. Eikamp

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William Cowan

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Re: still wondering
« Reply #33 on: August 15, 2004, 06:45:05 pm »

G'day Roy

The HL-10's actually model very well in this bass horn. Have a look at http://cowanaudio.com/HL-10A.GIF This is the same horn at the same drive level, only the driver has been changed. Maximum output within x-max (above 40Hz) with the Eminence driver is around 135dB at 800W drive.

Remember that this horn is specifically designed to be used in a domestic environment, and will come up very short in a large room or outdoors when used on it's own. Consider using 6 to 8 in a group if good performance is required in a half space environment. For prosound, extra bracing would be required, otherwise the enclosure would soon fail in service. Without having the HL-10A at hand, it looks like the driver would be a tight fit. The top of the enclosure may need to be raised 25mm or so for clearance around the motor structure. The extra 8 liters this would add to the rear chamber has no noticeable effect on performance.

Cheers
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JR Rager

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Re: still wondering
« Reply #34 on: August 16, 2004, 09:24:38 pm »

Actually my design is some what similar to Cowans design, same fold, longer horn, different compression,driver access, and bracing. I will have a prototype built in a few weeks. I will hopefuly have full measurements in a month or so.

I will probably post my designs elsewhere, as this is really out of the lab sub scope. Unless the mods ok it.

JR
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John Horvath

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Re: still wondering
« Reply #35 on: September 10, 2004, 09:08:50 am »

Anybody seen one of these?:

https://athena.safe-order.net/decware/WO32/wo32.htm

I'd like to see/hear what some HL10's would do in that box.  Two of those built on top of each other, or just two of them stacked on top of each other would probably make a really wicked drumfill sub.
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Dave Rickard

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Re: still wondering
« Reply #36 on: September 10, 2004, 10:25:02 am »

Klark wrote on Fri, 10 September 2004 14:08

Anybody seen one of these?:

https://athena.safe-order.net/decware/WO32/wo32.htm

I'd like to see/hear what some HL10's would do in that box.  Two of those built on top of each other, or just two of them stacked on top of each other would probably make a really wicked drumfill sub.

Some of the guys at the PARTS EXPRESS TECH TALK board have built those.  Others have also built their "housewrecker" for four 15's.  

That's a very friendly board, I'd ask there.

daver
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Mike MacWillie

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Re: still wondering
« Reply #37 on: September 11, 2004, 02:22:34 am »

that WO32 isnt meant for high excursion drivers. It's meant to be used in an audiophile music system, not loud enough for PA use Smile
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Jeff Robinson

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Re: still wondering
« Reply #38 on: September 11, 2004, 09:49:42 am »

I haven't crunched the numbers to model the WO32 but the first 2 problems are: a 5' throat length won't support horn loading below ~57 Hz and the mouth area is less than 43% the size of the LABsub. The claimed frequency response does extend to 28 Hz but with a measley 93 dB sensitivity so you'd give up an octave on the low end and 14 dB of headroom. Dead TANSTAAFL (There Ain't No Such a Thing As A Free Lunch!)

Jeff Robinson
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Re: still wondering
« Reply #39 on: September 30, 2004, 05:52:13 pm »

Ask Bill.

http://www.billfitzmaurice.com

particularly, check into the Tuba 24. When loaded with the Eminence HL-10 (the smaller brother of the LAB driver), supposedly it is excellent through that range. You may want to put a subsonic filter on it at 35-40 Hz, though, to maximize headroom. For really light (musical instrument) duty, it can even work with a Beta-10, and demolishes a Peavey SP-series 18" sub in both loudness and extension, at the same time. I think I still have the AudioXPress magazine where details about the Tuba 24's design process are given. The plans aren't in there, though they're only $10 from the Bill F. website. Bill F. also designs W-style "Double Reverse" horns for musical instruments, but the Tuba 24 box can also find use as a sound reinforcement sub.

Its usefulness is limited by the fact that it is really only a single-10" even though its horn uses innovative design to fit enough horn into that space to provide the extension you need. The HL-10 is 8 ohms and has only 300 watts power handling, so it takes lots of amp to drive into those 8 ohms unless you stack two of them vertically per side for 4 ohms. At the price, though, you can afford to do that as long as you've got transportation. They should fit together well if you turn the upper one upside down so the two horn mouths integrate better.

Update: Bill Fitzmaurice says that his Tuba 24 horn, loaded with a HL-10 getting 300w, can be used to replace a dual-18" bin getting 1000w, in terms of output. So for those looking for a smaller alternative to something as big as the LAB sub, the Tuba 24 (because its external dimensions are 24"x24"x24") with the HL-10 should fit the bill nicely as a SR sub.

P.S. When you check out the BillFitzmaurize web site, and the Tuba 24, make sure you recognize that the response graphs shown are using a Eminence Beta-10, a very lightweight 10" speaker. Not the HL-10. According to Bill F, the HL-10 outperforms the Beta-10 by about 7dB at 40 hz with 200 watts in, in the Tuba 24. Also according to Bill F. it can really keep up with the major-league mains that are on the market, since it was designed to be paired with his very high efficiency DR250a. The biggest thing the Tuba 14 has going for it is its small size. 24"x24"x24". That's tiny.

I'm glad you guys are doing this. I don't think the HL-10 gets enough attention to really be as good as it can be.
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