New 3-way mid-top |
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ceharden
The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
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Posted: 01 March 2020 at 8:24pm |
Another much overdue new design:
3-way mid-top for small venues. 12"+8"+1". Getting the combined rear chamber and port design right took a bit of thought. Drivers are all 18Sound. 12ND930, 8M400 and NSD1095 on XR1064. Runs 2-way active with a custom passive crossover between the 8" and 1". |
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colint
Old Croc Joined: 06 October 2007 Location: United Kingdom Status: Offline Points: 5227 |
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Nice looking box
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Never criticise another man until you've walked a mile in his shoes. Once you have, call him what you like, you're a mile away and you've got his shoes!
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Dub Specialist Sound
Old Croc Joined: 15 November 2013 Location: Smethwick Status: Offline Points: 4873 |
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Nice build , nice works..respect..
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Musical Roots Reggae Vibration is Life! for music is sound...sound is vibration...vibration is energy... and energy begets life. Therein lies my passion!...MUSIC IS LIFE...
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JonB67
Young Croc Joined: 22 April 2016 Location: UK Status: Offline Points: 1376 |
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really nice Chris.
bet it sounds great.
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VECTORDJ
Young Croc Joined: 11 June 2006 Location: United States Status: Offline Points: 515 |
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A+
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ceharden
The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
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Luckily I'm able to get wood CNC'd fairly easily. I'm far too lazy nowadays to cut everything from scratch. Still took many hours working on the CAD though.
I haven't gigged them yet but testing so far is promising. The 8" is covering ~400Hz to 2.4kHz and the TiN diaphragm on the 1" is quite nice. The impedance lumps on the 1" around the crossover region caused a few issues with the passive crossover design but managed to make it work without adding lots of extra compensation components. If you're wondering, 2.4kHz was settled on because it's a half wavelength of the 8"/1" driver offset so you can effectively get them in phase at the crossover point. Yes you get issues either side but it works well enough. It's the first cab I've designed for myself for a long time, have had the drivers lying around for years. Originally I was working on all kinds of complex horn loaded designs but realised for a lot of the jobs I do in small venues, something like this would be far more useful. Next up is something new to do the bass underneath... |
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odc04r
Old Croc Joined: 12 July 2006 Location: Sarfampton Status: Offline Points: 5482 |
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Nice work there, I still have a load of your old bits in the garage and one day I'll do a similar project. Sometimes trying tomake the best thing you can out of a pile of odd bits is an interesting challenge. You don't go back once you've got a decent CNC though do you. I was thinking the other day that with the right workflow angled cuts wouldn't be too hard or take too long. |
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MattStolton
Old Croc Joined: 04 September 2010 Location: Walthamstow Status: Offline Points: 4234 |
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Sometimes, reflex is all you need!
Look tidy. Personally I may have tried a 15/8/1, just to help out lower, but obviously box size goes up, which I presume was not your aim! Bit of a fan of a mid doing 400-2.5K ish. I have always had a worry about voice fundamentals 200-400, and then rest of voice in a different driver, but seems to hold together in my experiences. |
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Matt Stolton - Technical Director (!!!) - Wilding Sound Ltd
"Sparkius metiretur vestra" - "Meter Your Mains" |
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MPASOUND
Registered User Joined: 25 April 2006 Location: UK Status: Offline Points: 258 |
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Very nice looking project! NSD1095n is my favourite 1" driver.
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It's just bits of paper flapping about in a box.
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dlyxover
Old Croc Joined: 14 June 2007 Location: Liverpool Status: Offline Points: 1502 |
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tidy looking enclosure
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In the Truth there is no news, and in the News there is no truth
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BP1Fanatic
Registered User Joined: 02 August 2009 Location: Columbus, Ohio Status: Offline Points: 105 |
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Nice work! Can you post some measured graphs?
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Mark James
Old Croc Joined: 15 January 2006 Location: rig side Status: Offline Points: 5309 |
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Hey does your cnc guys charge much? I need to get some cabs sorted for someone and im not far away from you
Love this new top btw
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me so horny me love you long throw
horn loaded for her pleasure |
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