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Search: Posts Made By: Kevin Haskins
Forum: Ported Subwoofer Build Projects   03-01-10, 05:43 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Most of the heat that is dissipated by the coil (>80%) is removed from the coil/former to the atmosphere by air passing over the coil. If you don't have any air passing over it then it quickly will...
Forum: Ported Subwoofer Build Projects   03-01-10, 11:56 AM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Putting 2700W into ANY transducer with a test signal at the tuning frequency of either a ported or PR system is going to smoke it. Read the Power Handling Sticky.

Kevin Haskins
Exodus Audio
Forum: Ported Subwoofer Build Projects   12-31-09, 03:23 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

In a box, you need a massive amount of power to hit those limits. In most real-world conditions the power line is sagging at that point and amplifiers are not delivering full gusto.

I...
Forum: Ported Subwoofer Build Projects   12-30-09, 05:39 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

That is not a hit between the former and the pole. It is the suspension running out usable throw and soft limiting.


Kevin Haskins
Exodus Audio
Forum: Ported Subwoofer Build Projects   12-08-09, 12:14 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Oh come on Mike, everyone needs at least FOUR 21" subwoofers. ;-)

I'm glad it turned out so well for you. Be careful with test signals near the tuning frequency of the PRs. Once the...
Forum: Ported Subwoofer Build Projects   12-04-09, 08:23 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Ok Mike.... no making love in public.

Kevin Haskins
Exodus Audio
Forum: Ported Subwoofer Build Projects   11-25-09, 04:13 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21"

Mike,

They are a good company, I like doing business with them and they have been excellent anytime I've needed them. They get top-marks from me.

Kevin Haskins
Exodus Audio
Forum: Ported Subwoofer Build Projects   11-25-09, 02:11 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
Re: Maelstrom 21"

I've not had a chance to hear every model by any stretch but most of the pro-sound amps I've been around, all have similar noise levels. I wouldn't count on it being any better or worse than...
Forum: Ported Subwoofer Build Projects   11-24-09, 08:35 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

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. ...
Forum: Ported Subwoofer Build Projects   11-24-09, 05:07 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

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
Forum: Ported Subwoofer Build Projects   11-24-09, 02:05 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

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
Forum: Ported Subwoofer Build Projects   11-24-09, 11:10 AM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

It looks small in that picture. :D

Kevin Haskins
Exodus Audio
Forum: Ported Subwoofer Build Projects   11-21-09, 01:25 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

Hey... no problem. I love getting people pointed in the right direction. You can use as much power as you can afford on this driver. I have several people using 3000-5000W worth of amplifier...
Forum: Ported Subwoofer Build Projects   11-21-09, 12:36 PM
Replies: 180
Views: 50,738
Posted By Kevin Haskins
re: Maelstrom 21" With 4 - 2100 Gram 18" Passive Radiators

This is about what you can expect with that enclosure Mike. I stuck a 13Hz subsonic filter on this, figured 20% fill and used 2000W with this simulation. I used my PR-15"s because I was too lazy...
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