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MTH 4654

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JDCutta View Drop Down
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    Posted: 04 September 2010 at 7:37am
Has any one built the MTH 4654?
Any ideas if it will work with other drivers?

More details on it here: http://hornplans.free.fr/mth4654.html

Sims, quite well in comparison the the SBH
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JDCutta View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JDCutta Quote  Post ReplyReply Direct Link To This Post Posted: 05 September 2010 at 11:38pm
I have just contacted the designer for this, and he has confirmed that the eminence 3015lf has a very good responce in this, but has a limited input of 450watt. 

http://hornplans.free.fr/mth4654.html with the recommended RCF driver

- 37Hz -3dB pour 1 caisson
- 33Hz -3dB pour 4 caissons
- 30Hz -3dB pour 8 caissons

Looks very tempting for me

Plot of 8 compared to 8 of startecs SBH






Edited by JDCutta - 05 September 2010 at 11:43pm
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Beatdaddy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Beatdaddy Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2010 at 4:31am
I'm thinking about it myself!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FlipC Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2010 at 7:48am
That is just another 15" TH and not a good one.
Note on TH construction. That brace in mouth is BAD. HR can not show you but it will effect the output noticeably. Read FurySub DIYAdui.com
Also notice the unused space in design.

For the 3015LF use any of the following
FurySub - DIYAudio.com
Apache Mk4 - here abouts
SS15 - DIYAudio.com (single sheet ply!)

I have 4 of the Apache's BTW- page 120 (?) on the SHOW your sound system pt 2.
I have built TH Mini clones - which a few have since done.

Also the 3015 really should be passed at 32-35 Hz depending on box and power input.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote djeddie Quote  Post ReplyReply Direct Link To This Post Posted: 27 December 2010 at 3:14pm
Also, just how much wasted space in a cab would you like?
Chas n Dave : it's like Drum and Bass but with beards.

E=mc² ±3dB
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Beatdaddy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Beatdaddy Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2010 at 1:51am
Made one!
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Post Options Post Options   Thanks (0) Thanks(0)   Quote FlipC Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2010 at 7:19am
make it so you can test WITHOUT the last brace.
Test, Brace, retest.
Post results.

And man your in Cali... should have went over to DIYAudio.com and got the SS15 plans.
Or the others I mentioned.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote _djk_ Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2010 at 7:59am
Is that 5-ply CDX?
djk
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jamwa View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote jamwa Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2010 at 1:09pm
what would happen if you stick another 15" in the middle wasted chamber. even a different type say like the lab sub.....
Sound, Light, Projection, Display, Cameras and production support
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Post Options Post Options   Thanks (0) Thanks(0)   Quote tomschute Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2010 at 4:11pm
A lot of flippant remarks here.

At first glance I too thought was a lot of wasted space however...

Look at the plots and the volume of the entire box then make a judgement against alternatives (the few in the same ball park).

To load this with a emi driver  - especially one rated at 450watts would be like loading a psycho with a jaffa cake. I think the designer's being extremely sound offering budget options but just look at what is possible and also think of the benifit of the hi-fi sound tapped horns offer.

Tom
Out to lunch... stableaudio@hotmail.co.uk
www.stableaudio.co.uk
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Beatdaddy Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2010 at 4:14pm
It's 9 ply acx aruccoply made in chile, they call it a hardwood .
I'm not putting the brace in the mouth at all, I did do the rest of the
Braces though.
Not sure what driver I'm using , I have some 18's around here.
Baffle is cut for 18 .
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Beatdaddy View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Beatdaddy Quote  Post ReplyReply Direct Link To This Post Posted: 28 December 2010 at 11:18pm
Got the handles in for the bottom, and also  the speakons in.   will paint it tomorrow! Going to run a sigma pro in it....

Edited by Beatdaddy - 28 December 2010 at 11:29pm
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