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the first time i post my new projects

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_djk_ View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2015 at 6:41am
"tha-push-pull-15"
 
Two problems there:
 
1) the huge cavity the drivers couple into causes a big dip in the reponse somewhere, probably 80hz~120hz.
 
2) the drivers are so far apart that the expected reduction in distortion will only be in the bottom octave.
 
I admire your drive and energy in getting all these designs realized.
djk
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Post Options Post Options   Thanks (0) Thanks(0)   Quote all bass Quote  Post ReplyReply Direct Link To This Post Posted: 11 March 2015 at 8:19am
I know your designs from DIY audio. 

Although i have my doubts about some of them i applaud your affords. You must be the most active/productive designer out there. Thumbs Up
Get your free line array plans here!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote mstep77 Quote  Post ReplyReply Direct Link To This Post Posted: 14 March 2015 at 7:37pm
Great thread, thanks very much for sharing. Great finish on the cabinets.
 
Maybe one suggestion is that on the port assisted 18" sub you could try a longer port with a 180 degree bend in it and make it twice as long? It Should lower the cut-off frequency probably at the expense of the high frequency cut-off!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 8:33pm
Originally posted by bruce@bluff bruce@bluff wrote:

Fantastic plans Thawach, I just would like to know the purpose of the 20cm piece of wood in front of the driver of the 18 THA MRKII is it for bracing or does it play a role ?



yes its bracing but think to hv the effect in the higher freq.Smile


Edited by thawach - 17 March 2015 at 8:37pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 8:43pm
Originally posted by _djk_ _djk_ wrote:

"tha-push-pull-15"
 
Two problems there:
 
1) the huge cavity the drivers couple into causes a big dip in the reponse somewhere, probably 80hz~120hz.
 
2) the drivers are so far apart that the expected reduction in distortion will only be in the bottom octave.
 
I admire your drive and energy in getting all these designs realized.


hi djk   the sound is ok  the dip respond  is about 120 hz  thanx u for the replySmile





Edited by thawach - 17 March 2015 at 8:45pm
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 8:49pm
Originally posted by mstep77 mstep77 wrote:

Great thread, thanks very much for sharing. Great finish on the cabinets.
 
Maybe one suggestion is that on the port assisted 18" sub you could try a longer port with a 180 degree bend in it and make it twice as long? It Should lower the cut-off frequency probably at the expense of the high frequency cut-off!


i dont sure the cab what u refer to and if mrk cab   the cab is couple tl design.  most of this design  the port isnot too long

regardsSmile
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 8:56pm
friends m fighter i sim


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bee View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote bee Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 9:05pm
welcome thawach, been following your designs for a few years....Clap keep up the good work and progress

Edited by bee - 17 March 2015 at 9:06pm
https://www.elements-audio.com
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 9:15pm
some pic's small fighter when showed in the pa meeting@roiet province n other diy use.













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thawach View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 9:34pm
2 friends give me the drivers for home speaker design.  seas 8" n versatronics 5.25"    a few day ill try.   thiss my old home speaker project .  friends its open loss baffle.  lol







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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 9:41pm
friends the next month the songkran festival will  open.  today i bring some beautiful video for see.  the the songkran day in my town 2014 before the hot super star(junta) will come. enjoySmile

https://vimeo.com/122276291
https://vimeo.com/122378252
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Post Options Post Options   Thanks (0) Thanks(0)   Quote thawach Quote  Post ReplyReply Direct Link To This Post Posted: 17 March 2015 at 9:45pm
friends the ktl II


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