I'm familiar with these workbooks below.
You can import HR files into the workbooks to get them to automatically produce the enclosure or manually input the BOXPLAN fields. However, you still have to manually input numbers into HR for a TH.
Where did you get L12 = 32.80 and L23 = 20.40?
https://www.diysubwoofers.org/sheets/
You can import HR files into the workbooks to get them to automatically produce the enclosure or manually input the BOXPLAN fields. However, you still have to manually input numbers into HR for a TH.
Where did you get L12 = 32.80 and L23 = 20.40?
https://www.diysubwoofers.org/sheets/
well idk i give up i dont know how i can figure out what the length is from the iddle of the cone to the middle of the cone in the boxplan i posted. i also dont know at what points the segments are broken into in the boxplan to even begin
Going by what you said middle of the cone to middle I don't see how there aren't more than 4?
Any help would be appreciated I would love to get this figured out then I could start designing my own fold patterns and stuff which would be sweeet.
Going by what you said middle of the cone to middle I don't see how there aren't more than 4?
Any help would be appreciated I would love to get this figured out then I could start designing my own fold patterns and stuff which would be sweeet.
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I made one for a 6inch sub today and built it going to run dats on it and see how close it got. But knowing that what I imported into hornresp doesn't match what I think it does idk how close I'll get but that's all I've done so far with every other boxplan workbook. build it and just figure out where it needs to go from there and I've gained a lot of knowledge and been pissed alot too but that's the fun I suppose
would that make these numbers correct then for the sim? with the box being 38in tall 38in deep 30in wide?
Ok, the mouth is too big to fit in a 5 segment TH with an external depth of 38in.
With 5 segments, 6 vertical boards at 0.75in each equals 4.5in.
38in - 4.5in = 33.5in total depth internally.
In a constant flare 4 segment MTH or MTH Alternate style TH,
total internal depth = S4+S1+((S1+S1)/2)+((S4+S1)/2).
With a 5 segment MTH style TH, 1 segment (S1 to S3 or S3 to S5) needs to be a straight flare to get a rectangular shape.
Your driver, Dayton Audio HTS545HE-4 Kraken 21", has a 1,525cm2 Sd.
1,525cm2 / 3 = 508.33cm, should be your minimum number at S2.
I would model a 4 segment MTH or MTH Alternate style TH.
5 vertical boards x 0.75in = 3.75in - 38in = 34.25in internal depth.
34.75in / 2 segments (S1+S4) = 17.125in internal depth.
Your driver is 21.45in wide. I like some wiggle room and simple numbers, so I would model a 21.75in internal width enclosure.
Your driver has a 10.3" mounting depth. Again, wiggle room, simple numbers, and voice coil cooling, my mouth (S4) would be a minimum 11in.
Throat S1 = 21.75in x 2.75in x 2.54cm^2 = 385.89cm2.
Mouth S4 = 21.75in x (17.125in - 2.75in) x 2.54cm^2 = 2017.13cm2.
38in external height - (0.75in x 3 horizontal boards) = 35.75in internal height
(35.75in internal height x 2.54cm) x 4 segments = 363.22cm horn length.
The bottom of the enclosure internal dimensions = 14.375in (or 14 5/8") mouth + 0.75in vertical board + 2.75in throat + 0.75in vertical board + 8.5625in (or 8 9/16") + 0.75in vertical board + 8.5625in (or 8 9/16") = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
(14.375in mouth - 2.75in throat) / 4 segments = 2.90625in.
The top of the enclosure internal dimensions = 11.46875 or (14.375in - 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 11.46875 or (14.375in - 2.90625in) = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
With 5 segments, 6 vertical boards at 0.75in each equals 4.5in.
38in - 4.5in = 33.5in total depth internally.
In a constant flare 4 segment MTH or MTH Alternate style TH,
total internal depth = S4+S1+((S1+S1)/2)+((S4+S1)/2).
With a 5 segment MTH style TH, 1 segment (S1 to S3 or S3 to S5) needs to be a straight flare to get a rectangular shape.
Your driver, Dayton Audio HTS545HE-4 Kraken 21", has a 1,525cm2 Sd.
1,525cm2 / 3 = 508.33cm, should be your minimum number at S2.
I would model a 4 segment MTH or MTH Alternate style TH.
5 vertical boards x 0.75in = 3.75in - 38in = 34.25in internal depth.
34.75in / 2 segments (S1+S4) = 17.125in internal depth.
Your driver is 21.45in wide. I like some wiggle room and simple numbers, so I would model a 21.75in internal width enclosure.
Your driver has a 10.3" mounting depth. Again, wiggle room, simple numbers, and voice coil cooling, my mouth (S4) would be a minimum 11in.
Throat S1 = 21.75in x 2.75in x 2.54cm^2 = 385.89cm2.
Mouth S4 = 21.75in x (17.125in - 2.75in) x 2.54cm^2 = 2017.13cm2.
38in external height - (0.75in x 3 horizontal boards) = 35.75in internal height
(35.75in internal height x 2.54cm) x 4 segments = 363.22cm horn length.
The bottom of the enclosure internal dimensions = 14.375in (or 14 5/8") mouth + 0.75in vertical board + 2.75in throat + 0.75in vertical board + 8.5625in (or 8 9/16") + 0.75in vertical board + 8.5625in (or 8 9/16") = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
(14.375in mouth - 2.75in throat) / 4 segments = 2.90625in.
The top of the enclosure internal dimensions = 11.46875 or (14.375in - 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 11.46875 or (14.375in - 2.90625in) = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
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That cabinet must be EXTRA Braced , 2.5kW power in to the driver will cause extreme panel flex at the keypoints ( idk where are those 😁)
but anywhere they are must be braced extensively.
btw, yorkville use this L shaped bracing.... on the LS608
does that have a advantage ? over just one piece of wood to brace ?
but anywhere they are must be braced extensively.
btw, yorkville use this L shaped bracing.... on the LS608
does that have a advantage ? over just one piece of wood to brace ?
An L is stiffer and stronger than a single piece.
The LS608 is built of 15mm plywood, the L brace probably also makes it easier to construct using internal staple brace attachment.
Dam...that thing can take serious power
Yeah bracing is the word
If somebody will push that far
Also use 1" plywood 😜
Yeah bracing is the word
If somebody will push that far
Also use 1" plywood 😜
Hell ya! It's going to take me a few days to decode ur information BP so I can draw it out see what is what and fully understand it but I appreciate your help! I can't wait to get back to the computer after work! Lol thanks again.
Something like this.
S4+S1+(( S4+S1)/2)+((S4+S1)/2).
The bottom of the enclosure internal dimensions = 14.375in (or 14 5/8") mouth + 0.75in vertical board + 2.75in throat + 0.75in vertical board + 8.5625in (or 8 9/16") + 0.75in vertical board + 8.5625in (or 8 9/16") = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
(14.375in mouth - 2.75in throat) / 4 segments = 2.90625in.
The top of the enclosure internal dimensions = 11.46875 or (14.375in - 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 11.46875 or (14.375in - 2.90625in) = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
S4+S1+(( S4+S1)/2)+((S4+S1)/2).
The bottom of the enclosure internal dimensions = 14.375in (or 14 5/8") mouth + 0.75in vertical board + 2.75in throat + 0.75in vertical board + 8.5625in (or 8 9/16") + 0.75in vertical board + 8.5625in (or 8 9/16") = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
(14.375in mouth - 2.75in throat) / 4 segments = 2.90625in.
The top of the enclosure internal dimensions = 11.46875 or (14.375in - 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 5.65625in or (2.75in + 2.90625in) + 0.75in vertical board + 11.46875 or (14.375in - 2.90625in) = 36.5in.
36.5in + 1.5in (front & back boards) = 38in external depth.
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For constant positive flaring,
the top left quadrant needs to be bigger than 11.46875in
and
the top right quadrant needs to smaller than 11.46875in.
Same with the inner quadrants,
the left inner quadrant needs to be smaller than 5.65625in
and
the right inner quadrant needs to bigger than 5.65625in.
the top left quadrant needs to be bigger than 11.46875in
and
the top right quadrant needs to smaller than 11.46875in.
Same with the inner quadrants,
the left inner quadrant needs to be smaller than 5.65625in
and
the right inner quadrant needs to bigger than 5.65625in.
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At the 39Hz excursion peak, the Dayton Audio HTS545HE-4 impedance would be higher than 3.8 ohms, so would draw less than 5000 watts at that particular frequency.
That said, 137.84volts, ~5,000 watts for a driver rated for only 2,000 watts (AES 426B) is considerably more than it's rating:
https://www.xlrtechs.com/dbkeele.com/PDF/Keele (2001-09 AES Preprint) - Dev. Test Signals EIA-426-B.PDF
"the revised standard, 426-B, recommends the maximum power rating for an
amplifier to be connected to the loudspeaker. This could be
considered to be an “optimum” power match, as this is the most
power which can be delivered to the speaker while permitting the
speaker to operate within acceptable limits of performance as
defined by EIA in this standard under the categories of power
compression, distortion, and accelerated life testing.”
The 426-B test is specified to be done on a test baffle, the average impedance of the speaker is considerably higher than one loaded in a TH enclosure, so the power rating should be reduced accordingly.
Considering the Dayton Audio HTS545HE-4's power rating, 88volts (rather than 138 volts) should probably be considered it's maximum.
Art