inside a blackline h3
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URL: https://forum.speakerplans.com/forum_posts.asp?TID=13586
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Topic: inside a blackline h3
Posted By: james folkes
Subject: inside a blackline h3
Date Posted: 03 January 2008 at 1:34am
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purely for reasons of academic interest you understand... it's a classy design in many ways, i like the sound of the cab too, as do many others. the layout has a few nice tricks that i tried to get pictures of in case anyone was interested. build quality is absolutely stunning, as you would expect from martin, everything is very close fitting and nicely finished.
for those unfamiliar with the box, the martin audio http://www.martin-audio.com/specifications/portableclub/specsheet/h3plusspec.pdf - blackline h3 is a three way, horn/hybrid loaded compact full range cabinet. the 15" is on too short a horn to do much damage below 70 and is reflex ported to extend useable response. http://imageshack.us"> 
the 15" employs a classic martin letterbox throat, as featured on cabs from the 215 mkII to the wsx. you'd think it would rip the cone to bits, but seemingly this doesn't happen that often. http://imageshack.us"> 
the 10" midrange device sits in a sealed chamber made of thin plastic, but lined with a single moulded piece of polystyrene. looking beyond it you can see the ports for the 15" rear chamber, exiting either side of the hf device and adding stability to the overall cabinet via their box section construction. http://imageshack.us"> 
inside the back bowl there is also some fibrous damping material, spade connectors are used on all drivers and the cable is glanded into the mid driver's rear chamber for a non permanent seal. http://imageshack.us"> 
the phase ball itself is also polystyrene, if anyone fancies mucking around with this as a diy idea, the balls are available from many craft supply shops, just ask the decor hippies. the horn itself uses a few triangular pieces to assist in the transition from round throat to square mouth, but nothing fancy in the the throat area and the the design looks a little crude at this point. i think the lycra & fibreglass solution is far smarter here, but the blackline is an all timber construction and to be fair, it works well up to the 2 kHz crossover to the 1". sadly i didn't get a picture of the crossover, with hf padding resistors mounted on an extruded ally heatsink they were an inspiring sight. could the humble polystyrene ball take us to higher crossover heights with a smaller cone driver? i'd like to see if 2.5k on an eight isn't out of the question, but anyway it's dirt cheap and easy to replicate, in these times when the phase plugged small format cone driver is a "must have" rig accessory, i reckon it could be a very popular diy option. 
james. ------------- mardy hippy. |
Replies:
Posted By: Mark James
Date Posted: 03 January 2008 at 4:14am
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im a fan of these too, ive only heard them a couple of times though, think they could of done with more kick but an extra 15 might have cured that,. nice pics there james. ------------- me so horny me love you long throw horn loaded for her pleasure |
Posted By: Disco Stu
Date Posted: 03 January 2008 at 3:27pm
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Not too dissimilar to this then
http://www.billfitzmaurice.com/Omni15.html ------------- All you need to know is: Sensitivity + Power Handling - Power Compression = Max Output My acts: www.myspace.com/thebowiexperience www.myspace.com/scheisseelektronisches |
Posted By: pooju
Date Posted: 03 January 2008 at 5:53pm
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great post james! ive been trying to figure a variant of the ported/horn hybrid top box like this, somewhere between a tms 5 and the backline, but using 12 + 10 and and 1 inch. Hows the low end with these cabs on their own/ whats the kick/throw like? The polystyrene ball info is interesting, certainly easier to work with that Lydon a's wood egg! |
Posted By: TONY.A.S.S.
Date Posted: 05 January 2008 at 12:17am
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Seeing the polystyrene plug reminds me that it could be made by the same company that makes horns the same way. The horn I saw was at the ATC factory a long while ago. There has always been a link between Martin Audio and ATC. ------------- http://www.facebook.com/tony.rossell.3" rel="nofollow - http://www.facebook.com/tony.rossell.3 |
Posted By: jbl_man
Date Posted: 05 January 2008 at 9:51am
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Nice photos James....are all the drivers Martins`own? ------------- Be seeing you. |
Posted By: Sounds_d_b
Date Posted: 05 January 2008 at 11:57am
Ive got a pair of these myself - cracking cabs and ideally suited to live work. They can be used on their own for small-med gigs (I have used them without any bass re-inforcement for full live bands with audiences of around 250). They have a very natural clean sound and give a lovely punchy mid, but can get a little aggressive in the top when driven hard. On their own they get a hi-pass at 45htz and a heavy limiter. For larger gigs I tend to run them alongside a pair of Void Impulse 8T Mk1's which they work exeptionally well with, and having dedicated bass obviously lightens the bass load on the 15" which, when dedicated to mid bass, sounds absalutley fantastic. |
pooju wrote:Posted By: james folkes
Date Posted: 05 January 2008 at 11:36pm
well... they are badged as martin dls522 and dls602 for the 15" and 10" respectively, but they look kind of b&c in nature. http://imageshack.us"> 
http://imageshack.us"> 
the 10" has an open circuit voice coil, the 15 measures fine, but makes a farty noise when played. i'm surprised it manages this as the cone is solid, absolutely no movement from even quite heavy pressure. might well be a job for our man in wembley... who isn't really in wembley from a post code perspective, but you know what i mean. james. ------------- mardy hippy. |
Posted By: Mark James
Date Posted: 06 January 2008 at 12:31am
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so you own some h3 now then james????? i like them alot too.... ------------- me so horny me love you long throw horn loaded for her pleasure |
Posted By: ceharden
Date Posted: 06 January 2008 at 12:39am
| 15" is def a B&C, could be one off the shelf although possibly discontinued now. Not sure about the 10", doesn't look like a B&C chassis. Might be ATC. |
Posted By: justamadman
Date Posted: 17 January 2008 at 4:28pm
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f**k me there expensive ------------- in front of the bass bins baby |
Posted By: wideload37
Date Posted: 13 April 2009 at 10:15pm
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could u tell me if the gaps eitherside of the hf horn are in anyway ports ?
thx
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Posted By: wideload37
Date Posted: 13 April 2009 at 10:22pm
lol sry my bad didnt read that bit in the explanation  could u instead tell me if the ports are simply flush or are longer? and does the lf horn fire into the space behind the mid horn? just trying to get a picture in my head how its kinda set up.
thx again
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Posted By: james folkes
Date Posted: 13 April 2009 at 11:55pm
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the ports on the h3 are pretty deep yeah, they are as deep as the mid horn is long. you should be able to see this by the way they are flush with the 10" baffle in the second picture. the 15" lf driver is very close to the mid's back bowl, it fires nearly vertically down, ever so slightly tilted towards the rear of the cab. it is a very good use of cabinet space, although not quite as good as the res2. james. ------------- mardy hippy. |
Posted By: rich_gale
Date Posted: 14 April 2009 at 12:55am
| lovely cabs. i like the mid/high section on this cab. may well try replicating the mid section into something im playing with atm. nice thread. |
Posted By: manudj91
Date Posted: 23 May 2011 at 8:39pm
| hi, i've martin audio h3 and i whant to now if all the h3 makes a farty noise when play? thanks |
Posted By: manudj91
Date Posted: 23 May 2011 at 8:42pm
| < ="utf-8">hi, i have martin audio h3 but the 15 makes a farty noise when played, is normaly for this speaker? thanks |
Posted By: rich_gale
Date Posted: 23 May 2011 at 8:48pm
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no. probably need a recone, or there might be something in the horn hitting the cone? maybe a plastic beer glass? ------------- REFLEX ALL THE WAY.... (however, im playing with horns again...) That ok Mister Valiant? :) |
Posted By: manudj91
Date Posted: 23 May 2011 at 9:22pm
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< ="utf-8">no, I've already checked, it's like touching wood, keeping the volume downbecause it does not, it does give more power. In addition if I raise the cone does not do a bit more.
i don't understand.. |
Posted By: Plaguesguitarist
Date Posted: 24 May 2011 at 8:20pm
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Good Cabs these. Handles are slightly in the wrong place for my mind.
Not a patch on their predecessors though - The RS800's. Done side by side testing in a lincoln venue.
But then again, i'm prejudiced. i've got rs800's. ------------- Why did the lampy cross the road? To steal MY sharpie. |
Posted By: Jimmer
Date Posted: 12 March 2014 at 9:03am
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No ------------- Light travels faster than sound....That's why some people appear bright until you hear them speak! |
Posted By: discosucks
Date Posted: 12 March 2014 at 10:30am
| All you need is a boot. |
Posted By: cookie-dj
Date Posted: 03 January 2015 at 12:55pm
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can someone revive this thread with all pics? always wanted to know how one of these looks inside ------------- You can't polish a turd! |
Posted By: discosucks
Date Posted: 04 January 2015 at 12:28am
| I have pictures of the inside of mine Ill see can i dig them up . |
Posted By: angus
Date Posted: 11 January 2015 at 4:24pm
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That would be useful for me too please. ------------- They're complaining over there, but it's their fault! |
Posted By: discosucks
Date Posted: 11 January 2015 at 4:36pm
| http://forum.speakerplans.com/cbe18_topic66883_page9.html |
Posted By: angus
Date Posted: 12 January 2015 at 10:58pm
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Cheers. That helps a bit! That ported 15 kick is a clever design and good use of space for sure. Think I'll be leaving that out of my mid top and use a lightweight 15 in a bph like the old tms 2. Interesting to see how they fit it all in there though. ------------- They're complaining over there, but it's their fault! |
Posted By: BenW8C
Date Posted: 23 April 2019 at 8:22pm
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I can't see the pictures anymore..:(! Can someone please send them to me? I'm in the process of buying six and it would be perfect if I know how it should look exactly! Thanks allot, Ben Strootman. benstrootman@outlook.com
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Posted By: jacethebase
Date Posted: 23 April 2019 at 8:29pm
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You do realise H3 is 70x40? 3 a side isn’t really ideal IMHO, maybe look at W8t is you want to use multiple boxes :) ------------- www.wedding-production.co.uk www.stage2sound.com |
Posted By: BenW8C
Date Posted: 24 April 2019 at 10:11am
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Yes, thanks for the mention though:). I'm looking to keep 4 and sell 2, the guy only wants to sell all 6 at once. Cheers.
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Posted By: BenW8C
Date Posted: 24 April 2019 at 11:47am
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Seems linke 'angus' send me a pm, probably with information but I can't open it. I've done a search and found out it's probably caused by the fact I haven't posted 10 times yet.. If you read this angus, would you mind sending it to my mail or in this thread? Thanks allot. Ben.
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Posted By: angus
Date Posted: 24 April 2019 at 2:04pm
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Sure, I justjwanted to know whether you were selling the other 2 and how much for possibly? You can email me at angus dot mack at gmail if that's better for you? Cheers, Angus ------------- They're complaining over there, but it's their fault! |
Posted By: BenW8C
Date Posted: 24 April 2019 at 2:14pm
| I've sended you an e-mail :). |