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how important is bracing???
how important is bracing???
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Old 21st June 2018, 03:18 PM   #11
djn is offline djn  United States
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Thanks G. I think I will go with the threaded rod mainly because it takes up less space while still doing its job.
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Old 21st June 2018, 04:20 PM   #12
GM is offline GM  United States
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You're welcome! FWIW, I do/recommend both [sub]woofers unless it's either a bipole or just plain weighs a lot to damp out high power oscillating vibrations. That, or place something massive on it like a large potted plant, decorative marble or similar.

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Old 23rd June 2018, 06:59 PM   #13
djn is offline djn  United States
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I just bought a pair of these from a member here. Just need the iNuke now.

Dayton Audio RSS390HF-4 15" Reference HF Subwoofer 4 Ohm
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Old 23rd June 2018, 07:06 PM   #14
djn is offline djn  United States
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If i want to go lower than the driver/cabinet combo allows, how far can i push it with the DSP on the iNuke?
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Old 23rd June 2018, 10:12 PM   #15
weltersys is online now weltersys  United States
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Quote:
Originally Posted by djn View Post
If i want to go lower than the driver/cabinet combo allows, how far can i push it with the DSP on the iNuke?
You can push it past Xmax with the NU1000DSP, and to voice coil burn levels with the NU3000DSP or NU6000DSP ;^).

The processing available has plenty HP/LP and EQ to flatten the response, and dynamic EQ and output limiters to dial in a safe power level with processing applied. Long term, about 30 volts should be safe for the drivers you purchased.
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Old 24th June 2018, 04:23 PM   #16
djn is offline djn  United States
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I dont think ill have to push it too much. When i look at the cabinet volume to get F3 of 37hz in a sealed box it says 2.88 cu ft. Which is just a bit smaller than mine. My other 2 subwoofers are flat to 22hz and this is a dedicated listening room so i should be ok....i think.
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Old 24th June 2018, 04:33 PM   #17
djn is offline djn  United States
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Here are pix. They are really nice with no scratches on the veneer. I dont know what model Altec they are and the only labeling is half tirn off.
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Old 24th June 2018, 04:41 PM   #18
djn is offline djn  United States
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Pix wont load. Will try later
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Old 25th June 2018, 03:12 AM   #19
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Quote:
Originally Posted by hollowboy View Post
Threaded rods, like this?

Rythmik sub in a Parts Express cabinet

I've been thinking about using rods myself, though my idea was to put them across one side to the other, dead center. (and then more if needed.) I never thought to put them through the driver's mounting holes.

IMO, that way is much too difficult. Just thread one in from the back, until it hits the driver's magnet. Then do the others my way.

the idea, obviously, is that all sides of the enclosure will be expanding, or contracting, at the same time, so they can in effect "brace each other."
-------------------------

Another way I might try it is with simple aluminum L channel, glued down the inside-center of each side. That way, the centers are braced by the stiff outside areas, and you still have minimal weight.
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Old 25th June 2018, 03:40 AM   #20
djn is offline djn  United States
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Im kind of thinking the same thing. Im thinking of gluing 1x2 blocks opposite each other on all 6 walls then gluing 1x2 from block to block. Not high tech but iv done it before and i know it works.
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