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PostPosted: Thu Jun 08, 2017 8:40 am 
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Joined: Mon May 15, 2017 3:32 pm
Posts: 10
Leak test performed: Yes. One was found where the speaker tape had a small gap and was fixed....she is tight and braced very well.
Corner Load Distance: 18" (I honestly don't know what the correct distance should be)
LPF was started at 100Hz and rolled off completely at 130Hz
HPF is set rolls up from 100 to 130Hz. I realize that there is probably a gap here we need to address when we reconfigure everything.
Limiter was set to 55V (too high?) and that is according to our sound guy. Could not confirm.

I'm just a carpenter who likes to build stuff. Speakers are fun!!!


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PostPosted: Thu Jun 08, 2017 8:52 am 
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Joined: Wed Apr 24, 2013 12:43 pm
Posts: 236
Location: Austin, Texas
MrCyr wrote:
Leak test performed: Yes. One was found where the speaker tape had a small gap and was fixed....she is tight and braced very well.
Corner Load Distance: 18" (I honestly don't know what the correct distance should be)
LPF was started at 100Hz and rolled off completely at 130Hz
HPF is set rolls up from 100 to 130Hz. I realize that there is probably a gap here we need to address when we reconfigure everything.
Limiter was set to 55V (too high?) and that is according to our sound guy. Could not confirm.

I'm just a carpenter who likes to build stuff. Speakers are fun!!!


I think you want to set your high pass to 40hz...check the plans to confirm this. I use T39's and I know those high pass at 45hz.

_________________
2xJ15, THT, 4xT39 3012 (2x15", 2x20"), 2xSLA Pro, 2x short SLA Pro (Dayton), W6


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PostPosted: Thu Jun 08, 2017 2:35 pm 
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Joined: Mon Nov 28, 2011 11:12 am
Posts: 5647
Location: Ilfracombe Queensland Australia
whines wrote:
MrCyr wrote:
Leak test performed: Yes. One was found where the speaker tape had a small gap and was fixed....she is tight and braced very well.
Corner Load Distance: 18" (I honestly don't know what the correct distance should be)
LPF was started at 100Hz and rolled off completely at 130Hz
HPF is set rolls up from 100 to 130Hz. I realize that there is probably a gap here we need to address when we reconfigure everything.
Limiter was set to 55V (too high?) and that is according to our sound guy. Could not confirm.

I'm just a carpenter who likes to build stuff. Speakers are fun!!!


I think you want to set your high pass to 40hz...check the plans to confirm this. I use T39's and I know those high pass at 45hz.


+1.

You want the mouth of the cab somewhere between 6 inches to 1 foot from the corner...

_________________
Built:
2 x DR 250 (melded array) with March 2012 plans.
4 x 20" BP102 T39's, 2 x 28" 3012lf loaded underway.
3 x WH8 with melded array.
Bunter's Audio and Lighting "like"s would be most appreciated...


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PostPosted: Thu Jun 08, 2017 3:39 pm 
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Joined: Mon May 15, 2017 3:32 pm
Posts: 10
So set the LPF from 40Hz-120Hz?

Learning every day


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PostPosted: Thu Jun 08, 2017 3:55 pm 
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Joined: Wed Apr 24, 2013 12:43 pm
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Location: Austin, Texas
MrCyr wrote:
So set the LPF from 40Hz-120Hz?

Learning every day



High pass (ie block everything below this point) at 40

--and--

Low pass (block everything above this) ...usually 100hz or so. (no harm to subs if you take this too high but is starts getting in to territory your mains should be doing if you get too high)


This passes everything between 40 and wherever you Low pass at. The high pass blocks the bass below what your sub can handle and the low pass handles the transition between your tops and subs.

_________________
2xJ15, THT, 4xT39 3012 (2x15", 2x20"), 2xSLA Pro, 2x short SLA Pro (Dayton), W6


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PostPosted: Thu Jun 08, 2017 4:10 pm 
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Joined: Mon Jan 21, 2013 9:30 pm
Posts: 224
Location: San Rafael, CA
whines wrote:
MrCyr wrote:
So set the LPF from 40Hz-120Hz?

Learning every day



High pass (ie block everything below this point) at 40

--and--

Low pass (block everything above this) ...usually 100hz or so. (no harm to subs if you take this too high but is starts getting in to territory your mains should be doing if you get too high)


This passes everything between 40 and wherever you Low pass at. The high pass blocks the bass below what your sub can handle and the low pass handles the transition between your tops and subs.


These are the lowpass and highpass values for the SUB channel. In your original post (with the highpass at 100-130 Hz) were you talking about the highpass to the tops? Or the highpass on the subs? The subs need the highpass at 40Hz to prevent over-excursion of the driver. You need 3 filters.

_________________
Built:
1 Omni-15 Tall Boy
2 DR250s
2 Titan 39s


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PostPosted: Thu Jun 08, 2017 6:20 pm 
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Joined: Mon May 15, 2017 3:32 pm
Posts: 10
Got it. I'll report back when I can.


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