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subs to add to turbo

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Hvedstrup View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hvedstrup Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 9:36am
The 15hz hp was something Tony wanted to eliminate sub harmonic distortion and maybe vent the speaker better? The FLH construction keeps excursion under control so that isn't a problem.
 
For example the TSW-718 is only rated for 800 watts RMS, but uses 600 watt drivers. This conservative rating is because of the very low HP in the factory presets and at the time amps couldn't give much more power anyway.

Today you can fry TSW-718 easily if you HP them at 15hz and that's why they eat a Powersoft K6, MC2 E45 or LAB FP6400 all night when they are HP at 30-35hz.
 
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shagnasty View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shagnasty Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 9:53am
With a Lab 6400 you have 100Hz hi-pass built in, couldn't drive a 718 let alone a pair of 21s if their live depended on it... LOL


There is also an issue with excessive X-max in those box, 1 trashing drivers and 2 sounding completely crap, with 30Hz HP you can bin a PL 9.0 into them all night and they love it.

Truth is once we went to Omnidrive I have push HPF up as hi as 55Hz on big systems and got better result than 30Hz especially for bands with 5way running...

All a bit tricky as the loading of the stack into the space has a huge effect on this..
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mashgwan Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 10:15am
hog scoops work fine 
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Post Options Post Options   Thanks (1) Thanks(1)   Quote Hvedstrup Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 10:43am
Originally posted by shagnasty shagnasty wrote:


There is also an issue with excessive X-max in those box, 1 trashing drivers and 2 sounding completely crap, with 30Hz HP you can bin a PL 9.0 into them all night and they love it.

Truth is once we went to Omnidrive I have
 
If you limit the box to 800watt RMS/1600 watt peak there is no problems with excessive X-max even with 15hz HP.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shagnasty Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 11:38am
There is if you use big amps.... LOL
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Hvedstrup Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 11:43am
Agree, but a PL9?
 
I would think that it would fry the driver easily driven to just before clip, 30hz or not.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote shagnasty Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 12:43pm
A PL 9.0 is about right for 6 x 21s, tickles them along beautifully, but bear in mind I also run a pair of them of a Bridged SR 707 which drop more power per driver than a PL 9.0 into 2.6r....
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abrupt View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote abrupt Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 1:49pm
i have 8 tse 118 and 4 tms 4 so its just a case on adding more low end,the sub wouldnt be going any higher than 60hz 

Edited by abrupt - 24 May 2017 at 1:50pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote 4D Quote  Post ReplyReply Direct Link To This Post Posted: 24 May 2017 at 2:37pm
Methinks that what you really need are 4 tsw721 or 780l flog the old drivers purchase 4 new 21" neo drivers put them in backwards adjust the volume of the rear chamber accordingly and bobs your uncle..
DMZ. "The bass was intense. Girls were literally running up to stand next to the subs"
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