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Author Topic: Push pull double 18  (Read 13803 times)

Mark Wilkinson

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Re: Push pull double 18
« Reply #70 on: May 08, 2019, 08:28:10 pm »

It's been a year since i built these subs...thought I should give a follow up post.

I absolutely love them. 
Easy to handle, dig crazy deep, clean as in squeaky clean, and plain ole loud.
Opposed clam shell mounting doesn't walk or even vibrate the cabinet much, you have to really crank before they would toss a beer..
Just pulled the drivers out to check them for sagging, since they are in a horizontal mounting position.
The "anti-sag" DC voltage described earlier in this thread, that i keep on them when not in use, has apparently worked fine...couldn't tell any difference in any drivers. (Thx again for the idea, Marc S.)

I know the following traces don't work for live because they entail 64ms latency, but damn, look how clean they are for playback.
No smoothing, either mag or phase
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David Morison

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Re: Push pull double 18
« Reply #71 on: May 09, 2019, 08:06:33 am »


I know the following traces don't work for live because they entail 64ms latency, but damn, look how clean they are for playback.
No smoothing, either mag or phase

Damn, now that's just showing off!
Great work man 👍
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Mark Wilkinson

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Re: Push pull double 18
« Reply #72 on: May 09, 2019, 11:35:17 am »

Damn, now that's just showing off!
Great work man 👍

Thanks David !! 
And yeah, you're right about the showing off part, sorry :-[
Over zealous sometimes....

Hey, check out at my latest piece of experimental insanity, sitting on top of one of the push-push subs..
24 cheap 3.5" drivers that i have being driven with 6 amp channels powering 4 drivers each.
Separate DSP on each channel .... purely for playing with line array theory...shading, steering, etc, etc..   
Not much $ in the whole project for what I've been learning....biggest learning has probably been, despite nice looking transfers, I don't really like the sound of the line lol
But it is really cool to move the sound around...


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Roland Clarke

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Re: Push pull double 18
« Reply #73 on: May 09, 2019, 11:44:15 am »

Interesting project Mark!   :)
« Last Edit: May 10, 2019, 05:53:23 am by Roland Clarke »
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