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Old 23rd October 2005, 02:29 AM   #1
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Default Here's what I'm going to do

In a quest for awesome bass, I've formulated this plan after some thinking.

Adire Tumult(old version which I have)
Adire ADA1200(which I just ordered last week)
Stryke18" passive radiator(perhaps 2 later, but we'll see how one does)
6cubic foot enclosure

I was going to simply use a ported box, but considering the length of port required to get infasonic tuning(between 10-16hz) I decided a passive radiator might be a better way to go even though it costs more.

I was looking at tuning right around 16hz in 6 cubic feet, but with a single passive it doesnt seem possible as the highest tuning allowed is 13hz. For two passives it is easily achieveable, but I dont exactly need 18liters of PR Vd! A single passive does run out of excursion at ~15hz with 1200watts of power, but considering how often there is content that low in the signal, and how often I turn things up all the way, I dont think it will be a problem.

So what I'm going to do is buy one passive radiator next friday. In the mean time I'm going to build a 6cubic foot sealed box which will house the Tumult and ADA amp for now until the passive arrives and I'll cut a hole to fit the PR. I think I'll eventually get a 2nd PR, but probably not for another couple weeks.

Construction will begin tonight and pics coming soon! Stay tuned
Any comments are welcome also
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Old 23rd October 2005, 08:26 AM   #2
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Do you use a lowcut and if so, how?

Wkr Johan
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Old 23rd October 2005, 06:03 PM   #3
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Quote:
Do you use a lowcut and if so, how?
I assume you mean a low pass filter. The ADA amps have Twin cascaded second order filters Q=0.707 adjustable from 35 to 110 Hz. The crossover network can be defeated, 2nd, or 4th order.

If you mean a subsonic filter, no I'm not planning to use one.
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Old 23rd October 2005, 10:02 PM   #4
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Lowcut = highpass

Quote:
I'm not planning to use one
Why, may I ask?

Wkr Johan
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Old 24th October 2005, 12:52 AM   #5
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greater than 90% of the time I wont be going anywhere near full power. The other 10% of the time I'm not going to be playing anything with strong content below 30hz, much less 14hz where excursion reaches 34mm at 1200watts. It should not be needed

Simply put, I am careful not to abuse my speakers
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Old 28th October 2005, 04:46 AM   #6
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I had a question... if anyone knows this it would be very helpful

What is the mounting depth on the stryke PR-18?

I emailed stryke a few days ago and havent gotten a reply yet. I'm guessing is probably not deeper than 6 or 7 inches, but its hard to tell from just a picture. I need to know so I can tell what kind of cutouts need to be done in the bracing. Does anyone know?
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Old 31st October 2005, 03:29 AM   #7
simon5 is offline simon5  Canada
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Try emailing Kyle at Acoustics Visions. He sells those too.
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Old 31st October 2005, 04:13 AM   #8
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I asked kyle, he didnt know, said to contact stryke... havent gotten a reply yet
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Old 31st October 2005, 04:27 AM   #9
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You can have a fold in the bassreflex channel, that does not harm very much. So you could build it out of wood and use the enclosure walls for it.
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Old 31st October 2005, 12:38 PM   #10
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I don't think John checks the old Stryke Audio email accounts anymore, but if you email him at sales@aespeakers.com then you might get a more expedient response.
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