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SMT 212 w/ Build pics. |
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wafflesomd 
Young Croc 
Joined: 21 September 2007 Status: Offline Points: 811 |
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 Topic: SMT 212 w/ Build pics.Posted: 28 August 2008 at 7:33pm |
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Well, the pics will be on later :P
Managed to get 11 ply birch for $35 (U.S.) :) Will these be the only SMT212's in the U.S.? |
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wafflesomd
Young Croc
Joined: 21 September 2007 Status: Offline Points: 811 |
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Posted: 28 August 2008 at 8:31pm |
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Oh yah.
I as gonna go buy a bit to round the corners. What size should I get if I'm using 18mm ply. |
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sKs01
Old Croc 
Joined: 11 April 2008 Location: sheffield Status: Offline Points: 1744 |
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Posted: 28 August 2008 at 9:50pm |
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18mm
 the bit for rounding (or at least ones i use) have a roller on the end total depth of the cutting section is around 20mm mebe, and the actual cutter will have a ciruclar ish flat bit on top so actual cut you make is about 8mm just find one thats got a 90 degree curve (if you get that) hope that helped a bit, if at all.nice price on the ply btw. |
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You're a big man, but you're in bad shape. With me it's a full time job. Now behave yourself.
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wafflesomd
Young Croc
Joined: 21 September 2007 Status: Offline Points: 811 |
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Posted: 28 August 2008 at 9:55pm |
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Well, yah, I know what the bit is. There are different sizes though.
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login4
Old Croc
Joined: 03 April 2006 Location: Wales Status: Offline Points: 1552 |
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Posted: 28 August 2008 at 11:02pm |
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for my SMT212 build i used the smaller of the the two that came in my router bit pack
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CELTIC SUBSONIC SOUND SYSTEMS
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eltron
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Joined: 21 December 2007 Location: Finland Status: Offline Points: 399 |
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Posted: 29 August 2008 at 9:11am |
Quoted from the Speakerplans.com build guide by rog. In that case the example build was 18mm MDF. |
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doober
Young Croc
Joined: 03 January 2006 Location: Cornwall UK Status: Offline Points: 1118 |
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Posted: 29 August 2008 at 4:29pm |
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I prefer a 9mm radius on large cabs, 6mm can look a bit insignificant on anyting bigger than a 12"+horn cab. To avoid hitting the screws just countersink them a bit deeper, and always fill and sand before rounding over.
Is the SMT a trapezoid cab? if so use a smaller radius around the front, and do these edges first before doing the top and bottom with a 9mm. Kieran |
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Blahblahblah
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Static Age
Old Croc
Joined: 14 November 2005 Location: Oxfordshire Status: Offline Points: 1652 |
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Posted: 29 August 2008 at 4:50pm |
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I like to do as much routing as i can while the cab is still a flat pack. That way i cant possibly hit a screw.
Edited by Static Age - 29 August 2008 at 4:51pm |
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hektik
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Joined: 12 October 2006 Location: NORFOLK Status: Offline Points: 217 |
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Posted: 03 September 2008 at 6:26pm |
if ur good enuff you can do it with a soft pad on a grinder .and you wont hit screws..practice with a piece of scrap first...its really quik and quite easy wen uv had a bit of practice took me about 5 mins per cab ill put sum piks up of mine tmoro ....look in new projects ...then 18" mini scoops theres sum piks up now but thats before id rounded the corners..
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hektik
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Joined: 12 October 2006 Location: NORFOLK Status: Offline Points: 217 |
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Posted: 04 September 2008 at 5:57pm |
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there ya go
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wafflesomd
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Joined: 21 September 2007 Status: Offline Points: 811 |
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Posted: 04 September 2008 at 7:17pm |
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I've got one built, minus the top and bottom. The rear of the cab ended up being around 200mm, not 195. So, I'm going to have to cut new ones specific to each cabinet.
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wafflesomd
Young Croc
Joined: 21 September 2007 Status: Offline Points: 811 |
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Posted: 19 September 2008 at 3:10pm |
 I tried some Eminence compression drivers, sounded OK, but couldn't keep up with both twelves. Cabinet likes to resonate at around 150 hrtz, so I just EQ that out and they sound great. A little issue with the tweeter baffle. Baffle ended up not being long enough to reach the side walls. Cutting it down and just mounting it on top of that separating sheet worked. Edited by wafflesomd - 19 September 2008 at 3:12pm |
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Now you are ready to go round the whole cab with your router with a round over
bit installed. You don't have to make a big round over, around 6 mm (1/4") is
good. Any more than this and you will be hitting the screws. Rounding over gives
a very professional finish to a cabinet and is easy to do. If you don't own a
router make it the next thing you buy.