MTH 4654
Printed From: Speakerplans.com
Category: Plans
Forum Name: Other plans
Forum Description: Discussion / Questions about all the other plans
URL: https://forum.speakerplans.com/forum_posts.asp?TID=42765
Printed Date: 23 April 2024 at 7:08pm
Software Version: Web Wiz Forums 12.06 - https://www.webwizforums.com
Topic: MTH 4654
Posted By: JDCutta
Subject: MTH 4654
Date Posted: 04 September 2010 at 7:37am
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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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Replies:
Posted By: JDCutta
Date Posted: 05 September 2010 at 11:38pm
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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   |
Posted By: Beatdaddy
Date Posted: 27 December 2010 at 4:31am
| I'm thinking about it myself! |
Posted By: FlipC
Date Posted: 27 December 2010 at 7:48am
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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. |
Posted By: djeddie
Date Posted: 27 December 2010 at 3:14pm
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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 |
Posted By: Beatdaddy
Date Posted: 28 December 2010 at 1:51am
 Made one!
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Posted By: FlipC
Date Posted: 28 December 2010 at 7:19am
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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. |
Posted By: _djk_
Date Posted: 28 December 2010 at 7:59am
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Is that 5-ply CDX?
------------- djk |
Posted By: jamwa
Date Posted: 28 December 2010 at 1:09pm
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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 |
Posted By: tomschute
Date Posted: 28 December 2010 at 4:11pm
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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 Speaker Building Services |
Posted By: Beatdaddy
Date Posted: 28 December 2010 at 4:14pm
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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 . |
Posted By: Beatdaddy
Date 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.... 
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Posted By: FlipC
Date Posted: 29 December 2010 at 4:42am
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Nice build. |
Posted By: Beatdaddy
Date Posted: 30 December 2010 at 2:27am
I'm going to fire it up tomorrow! A lot bigger than the ms-18's.....
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FlipC wrote:Posted By: Tony Wilkes
Date Posted: 30 December 2010 at 8:35am
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I hope you wear riggers gloves when moving them!!! Tony ------------- www.forteaudio.eu - BMS - db-Mark Processors - Lexon (SAE) |
Posted By: Drimacoustic
Date Posted: 30 December 2010 at 1:49pm
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You should definitely round over the handles also from inside. Nice build though, let us know how do they sound. I think that Sigma is not the best choice of driver for this cab.
------------- love begins below 40Hz |
Posted By: Beatdaddy
Date Posted: 30 December 2010 at 9:01pm
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Tried two drivers out today:) The sigma sounded awesome ... Reminded me of the x-1 but goes a little farther up. Crossed at 30 hz highpass 120 lowpass , this is a loud box! Then i put a cheap ebay driver zyp-18 in that i had in a sub 18 for about a year, almost as good ! crossed at 35 hz highpasss and 110 lowpass, WOW! I'm getting a c18-650el reconed , I'll try that next...... Also I'm using a driverack pa and a crown xls 402 bridged for these tests... Overall this thing is amazing , but then again .... It is GIGANTIC!!!!!!!! P.S. Thanks for the tip on the handles:)
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Posted By: VentureSound
Date Posted: 31 December 2010 at 3:00am
I've just been testing two MTH4654 that were made for me by Tomschute, and very nice they are too! I've loaded them with Eighteensound 21LW1400, and after doing some early listening tests, I don't care about the "wasted space". Actually, if you think about it you could use that space, let's say for an active amp module?  So, more details about the sound of the cab: I was comparing one cab of the MTH to one box of our BPH double 18s which are very similar to an F218. For most jobs these do very well, and i'm happy with them, but wanted to try something new, (and with more sub) hence the MTH. Physically the boxes are about the same volume, so a bit of a comparison is useful I think. Ok, so there aren't really many suprises here, but audibly the F218 appears louder for the same input signal (so we are comparing 2x 18" to 1x 21"). Actually the 218 is not that much louder, the single 21" does very very well against the two 18s. Could the extra perceived volume from the 218 be distortion? On paper they have a similar sensitivity, around 103db for MTH and 105dB for the 218. The 218 has a harder kick, no suprise there either. The sound from the 218 hits you in the chest, whereas the MTH does not. You can hear the kick from the MTH its just not as strong as the 218. The transients from the 218 are audibly quicker and more punchy. Now, for sub the MTH clearly wins. The bass notes from the MTH sound very clean and a single cab sounds like it plays lower than the 218, which it probably does. The sound from the MTH is very pleasant to listen to on its own and is non fatiguing, which a 218 can be at full chat. To be fair to the 218, I normally use these in stacks of three, and they sound pretty good like that, with enough 'sub' for most applications. Overall I really like the sound of the MTH. It produces lovely clean bass and there is no honking or colouration that I could hear. I played a variety of music through the cab and could hear basslines going up and down, each note clearly distinguishable from the other. Sounded like the response was pretty flat with no nasty peaks. I was crossing from about 25Hz to 120Hz. I spoke to Marc the designer and he suggested some EQ to liven up the kick. That's what i'll try next. What i'd really like to do is hear a stack of eight of these driven by a pair of Crown IT8000s, which should be something quite fun indeed! Tom, i'll be in touch shortly.  Below are a few photos of the finished MTHs. Sorry about the pic quality but I had to do them in a hurry with my phone. I will also try and put some better ones up later, from when they were being made by Tom. http://img844.imageshack.us/i/imag0125v.jpg/">  http://img145.imageshack.us/i/imag0124s.jpg/">  http://img228.imageshack.us/i/imag0123o.jpg/">  http://img252.imageshack.us/i/imag0122n.jpg/">  Uploaded with http://imageshack.us - ImageShack.us |
Posted By: VentureSound
Date Posted: 31 December 2010 at 3:13am
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Posted By: toastyghost
Date Posted: 31 December 2010 at 3:21am
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Where are the sockets for input! |
Posted By: JDCutta
Date Posted: 31 December 2010 at 9:46am
| Im guessing in the recess on the back of them, just looks like the holes aren't cut yet |
Posted By: tomschute
Date Posted: 31 December 2010 at 10:41am
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there the new wireless neutrik series
------------- Out to lunch... stableaudio@hotmail.co.uk www.stableaudio.co.uk Speaker Building Services |
Posted By: VentureSound
Date Posted: 31 December 2010 at 1:43pm
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Haven't you heard Toasty? Neutrik developed the new wireless series after Tom developed the Inductive Synergy Drive (similar to the Toyota Prius, but a lot less shit). You just sit the cab next to the amp, and it knows what to do! |
Posted By: Beatdaddy
Date Posted: 06 January 2011 at 12:14am
 Putting a beyma 18g550 in next!
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Posted By: login4
Date Posted: 06 January 2011 at 10:12pm
looking good i want to build some of these and load them with 18 Sound 21NLW9000 and give each cab around 3.5kw it will be an expensive venture but do peeps think it will be worth it? ------------- CELTIC SUBSONIC SOUND SYSTEMS |
Posted By: staiper
Date Posted: 06 January 2011 at 10:52pm
_____________________________________________________________________________ Following one might be not to bad (HR simulated in same combination with same speaker unit) considering that cabinet will be 123ltr. smaller  ------------- Just do it! ..or do not.. ;) |
Posted By: djeddie
Date Posted: 06 January 2011 at 11:29pm
So what cab is that then? ------------- Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB |
Posted By: staiper
Date Posted: 06 January 2011 at 11:54pm
..some ~3Hz less low extension than MTH4654 CBX-18 ------------- Just do it! ..or do not.. ;) |
Posted By: djeddie
Date Posted: 07 January 2011 at 6:23pm
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Thanks Stipe.
------------- Chas n Dave : it's like Drum and Bass but with beards. E=mc² ±3dB |
Posted By: tomschute
Date Posted: 08 January 2011 at 6:29pm
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Yo Stipe... Would you be helpful enough to share HR data for CBX? What sort of drivers work best? regards, Tom ------------- Out to lunch... stableaudio@hotmail.co.uk www.stableaudio.co.uk Speaker Building Services |
Posted By: staiper
Date Posted: 08 January 2011 at 9:20pm
S1 = 800 L12 = 21 S2 = 756 L23 = 208 S3 = 2600 L34 = 30 S4 = 5455 ------------- Just do it! ..or do not.. ;) |
Posted By: Beatdaddy
Date Posted: 12 January 2011 at 3:58pm
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Tried the beyma in it ..... Sounds awesome! Was keeping up with a jbl vertec powered unit , with only a crown 402 bridged!!!! Thats only about 800 watts into it...... Im on a hunt for the 21n451...
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Posted By: _djk_
Date Posted: 13 January 2011 at 12:10am
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http://www.savinglots.com/lotprod.asp?item=LF21N451%20 - http://www.savinglots.com/lotprod.asp?item=LF21N451%20 ------------- djk |
Posted By: Beatdaddy
Date Posted: 13 January 2011 at 2:11am
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Posted By: Beatdaddy
Date Posted: 13 January 2011 at 2:15am
WOW!!!! I really like that driver, need a few more . MS-18 is still the best sounding scoop i've heard , especially with the beyma !
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Posted By: Beatdaddy
Date Posted: 13 January 2011 at 6:53pm
  This box likes the beyma!
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Posted By: staiper
Date Posted: 13 January 2011 at 7:29pm
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Beat daddy! Excellent looking (and pretty fast) work. If I live in California I would order some cabinets built by you. (..hmm or rather come to your workshop with few beer six-packs and build them together) ------------- Just do it! ..or do not.. ;) |
Posted By: FlipC
Date Posted: 14 January 2011 at 3:47am
| So an Th118? |
Posted By: Beatdaddy
Date Posted: 14 January 2011 at 3:54am
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Maybe dec 2nd ? I'm building a cyclops next!!!! Stipe rules! |
Posted By: Masssive
Date Posted: 24 January 2013 at 2:30am
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Thread resurrection! I must concur with all the reports here on the MTH. I have 2 loaded with B&C 18nw100. They are awesome really loud clear full bass. Works well inside, just fills the room effortlessly. My ones were built as trial boxes with free, shitty, wood. But they work so well i haven't bothered to rebuild them yet. |
Posted By: bitSmasher
Date Posted: 24 January 2013 at 3:09am
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I saw the thread bump and was going to reply with "my housemate has a couple of 'proto' boxes running well, we should measure them soon enough"... Gotta get my mic back and install REW on the laptop |
Posted By: Strawberry Jam Sound
Date Posted: 06 March 2017 at 8:24pm
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Thread resurrection again, any chance anyone has run these boxes with void v18 1000s? or knows if they'd be good? Cheers |
Posted By: screeldnb
Date Posted: 07 March 2017 at 2:30pm
| Has anyone tried these with v-18 1000s? |
Posted By: screeldnb
Date Posted: 11 March 2017 at 1:29am
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Or does anyone have the hornresp input values for the mth 4654 so i can try sim it? Thanks |