Ported how low is too low? - Page 3 - Home Theater Forum and Systems - HomeTheaterShack.com

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post #21 of 40 Old 12-15-14, 08:11 PM
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Try a concrete/block place. They'll probably even cut it for you. Mine did...
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post #22 of 40 Old 12-15-14, 08:18 PM Thread Starter
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Thanks.
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post #23 of 40 Old 12-16-14, 04:49 PM
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Re: Ported how low is too low?

I moved to tactile devices below 18 Hz. More effective if done right and easier on the house foundation

Taking a driver that has Fs of 21.3 and lowering it by 1/2 octave in a large box Xmech will become and issue quickly in the infrasonic area. Not saying you can't do it just more effective ways of getting what you want with really high SPL values.
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post #24 of 40 Old 12-16-14, 05:05 PM Thread Starter
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I stay under the xmax modeled at 1800 watts of power with a hpf set to 10hz. So I should he fine there and at 2.5 meters will have 108 db at 12HZ and 115 from 20hz and up. If I recall correctly.

Bass shakers are going to be added at some point too just not yet. Being a all cement room the room gain is nice too but not counted on in the numbers. My wife said I can add a second sub as well so a crushed lung should come any day.
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post #25 of 40 Old 02-01-15, 09:25 PM
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Re: Ported how low is too low?

I got a new AVR, so I re-tuned my MiniDSP last night. The before and after response is night and day. I can't imagine a high octane HT bass machine w/o one. That said, the hpf is a given. Like others have said, don't worry if your explosions are x milliseconds out of alignment with the rest of the sound. You will never know it. (And I just can't bring myself to trust Audyssy, etc, auto-eq systems).


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post #26 of 40 Old 02-01-15, 09:50 PM Thread Starter
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Thanks. I have the tube and all the parts now just waiting on a friend to cut the wood to be cut for me and it will be done.

Here is a pic of the 30 inch sonotube forced into a PA cruiser.



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post #27 of 40 Old 02-01-15, 09:57 PM
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That looks awesome! I want to stuff it with gunpowder and put a match to it. Get that PT movin!
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post #28 of 40 Old 02-01-15, 10:03 PM Thread Starter
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Let's just say this. I have to drive 45 miles with the hatch open as that is as much that would fit.

The part that was the worse was trying to get it out on my own. Took 1 1/2 hours to force it out because of how tight the fit was. My wife sat inside and laughed at me in the cold.

I am so close to bring able to complete this build but I need that wood cut.
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post #29 of 40 Old 02-02-15, 07:10 AM
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Re: Ported how low is too low?

The only things missing are a flux capacitor and Marty Mcfly...

-Jim

If you take yourself too seriously, expect me to do the exact opposite
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post #30 of 40 Old 02-02-15, 02:37 PM
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Yeah, then make like a tree and get outta here...
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