Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 181 Old 11-23-09, 06:35 PM Thread Starter
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Mfishmike
 
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Thank you for that Mike,

I always love those lower numbers.

I have a Houston buyer who may be buying my complete subs tomorrow night along with one or two of my amps, which will require me to buy new passives. I have to have a much bigger amp too. I can't hardly compress the driver by pushing down!

That leaves the door open for either John's 2100 gram 18's; or Kevin's passives. John's 18"ers have a much lower fs of 3.9 which is good. I've been building subs for years and have always used John's passives when they were available.

Here is the beast mounted temporarily and the cabinet sanded. I didn't realize the driver would be so large. That's a 23" wide cabinet!! What a woofer!

A grill is going to be the biggest challenge to make and look nice.

Again, thank you for your time with the modeling!

Mike
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post #22 of 181 Old 11-23-09, 08:10 PM
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

How bout a quad set of Kevin's 18's? Load em up full of mass (1500 to 1800 grams) and stand back! It'll take over 3000 watts before you run out of excursion on the pr's! Of course your room may be coming apart with over 122 db at 20hz anechoic. Those kind of lows can induce nausea!
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post #23 of 181 Old 11-24-09, 10:10 AM
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Quote:
Mike Cason wrote: View Post
Thank you for that Mike,

I always love those lower numbers. I was thinking the larger cabinet may be a benefit.

I have a Houston buyer who may be buying my complete subs tomorrow night along with one or two of my amps, which will require me to buy new passives. I have to have a much bigger amp too. I can't hardly compress the driver by pushing down!

That leaves the door open for either John's 15's or 18's; or Kevin's passives. John's have a much lower fs of 5 which is good. I may ask you to explore which one you would use, either three 15's or 2 to 3 18's. I wouldn't want you to spend any time on it until after I get cash in hand tomorrow night.

Here is the beast mounted temporarily and the cabinet sanded. I didn't realize the driver would be so large. That's a 23" wide cabinet!! What a woofer!

A grill is going to be the biggest challenge to make and look nice.

Again, thank you for your time with the modeling!

Mike
It looks small in that picture.

Kevin Haskins
Exodus Audio
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post #24 of 181 Old 11-24-09, 12:40 PM
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Justin
 
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Great Build! With the box size stay the same if you went with 18" pr's instead of 15's and would that buy you anything? Would you be able to use few pr's if the 18's were used? I ask because I may want to build one myself.
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post #25 of 181 Old 11-24-09, 01:05 PM
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

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jreaves1637 wrote: View Post
Great Build! With the box size stay the same if you went with 18" pr's instead of 15's and would that buy you anything? Would you be able to use few pr's if the 18's were used? I ask because I may want to build one myself.
Sure.... you can build around 7 cubic feet with a single M-18 & a pair of PR-18s. It is still a house-wrecker.

Kevin Haskins
Exodus Audio
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post #26 of 181 Old 11-24-09, 03:52 PM
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Justin
 
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

what I mean to say was how would the 21" do with 18" passive radiators? Didn't I see a thread somewhere about some 21" pr's?
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post #27 of 181 Old 11-24-09, 04:07 PM
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

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jreaves1637 wrote: View Post
what I mean to say was how would the 21" do with 18" passive radiators? Didn't I see a thread somewhere about some 21" pr's?

I have 21" PRs, which look identical to the M-21" but they are $150 each, $300/pr. Two is all you would need.

Kevin Haskins
Exodus Audio
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post #28 of 181 Old 11-24-09, 05:39 PM Thread Starter
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Kevin,

How would you hook up your Face amplifiers with the RCA LFE output on my Denon? How long have they been around and what is the RMA rate of these amps?

My cabinet is too narrow with inside 1.25" for your 21" passive radiators and grills.

Much appreciated.

Mike

Quote:
Kevin Haskins wrote: View Post
I have 21" PRs, which look identical to the M-21" but they are $150 each, $300/pr. Two is all you would need.

Kevin Haskins
Exodus Audio
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post #29 of 181 Old 11-24-09, 07:35 PM
Kevin
 
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re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

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Mike Cason wrote: View Post
Kevin,

How would you hook up your Face amplifiers with the RCA LFE output on my Denon?
I wouldn't.... as much as your spending on a subwoofer, I'd get the SMS-1 so you have room measurement and EQ capability. There is no sense spending that much on a subwoofer and not having it.

Once you have that.... Denon RCA Output --------> XLR SMS-1 XLR --------> XLR Face Amp

Quote:

How long have they been around and what is the RMA rate of these amps?


Mike
Good question.... I don't know. I've never had one of them returned outside of an audiophile that didn't like the fan noise. Face is relatively new, but well run and they stand behind the product better than most companies I've had to deal with. They are a good company, otherwise I wouldn't bother with them.

Kevin Haskins
Exodus Audio
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post #30 of 181 Old 11-24-09, 08:02 PM Thread Starter
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Re: Maelstrom 21"

Thanks for the info. I might budget that in a little later. I'm strapped. I found an XLR to RCA connector and have the great Reckhorn B-1 EQ which does well for me. Are the fans any noisier than QSCs or other similar amps?

I did manage to sell both of my subwoofers to a Shackster in Peoria Illinois and they are crated and ready to ship on Monday. I just need to strap them down. I'm glad I didn't part them out. They are too good to be wasted.

Thanks Kevin,

Mike
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