|
And so it begins... with build pics! |
Post Reply 
|
Page 123 12> |
| Author | |
Heathrow_B_line 
Old Croc 
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
 Post Options
 Thanks(0)
 Quote Reply
 Topic: And so it begins... with build pics!Posted: 23 April 2006 at 5:55pm |
|
The weathers getting better and i've got enough saved up to try and build some mt122 variants. Been lusting over them for a couple of months and flicking through julz' pics its just made me want to build then even more. i intend to build them with only one 12" and not two as per plan. Also i intend to reinforce the bottom and put a top hat mounting plug. this, however. needs to be investigating on my trial version as althougth it would be handy in some cases im not sure whether [a] the box will be too heavy to be supported on a speaker stand, and whether having 50kg on just a small pole would be stable/safe. either way my trial cab should answer most of my questions. as i said i will build one on its own (so if i get stuck i wont waste too much money!) then build 8. i was thinking about getting some fibreglass horns moulded but at the moment i think wood is a better option. reading the lab horn forum i often see that ppl have constructed special jigs to cut out the difficult bits... i think i'll try and replicate this. Hopefully i will get about 2 hours at work on monday to knock out some cad drawings in autocad so i can show u guys what exactly im thinking of doing... and if there are any glaring flaws! As a engineer i think having it laid out in cad will help me when it comes to generating a cutting list. if anyone else is building mt122's in the london area id welcome any input/show&tells... heres what ive found by searching all the mt122 threads.... Edited by Heathrow_B_line - 20 August 2006 at 12:56pm |
|
|
Produce a killer sound. Take no prisoners.
|
|
 |
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 April 2006 at 5:55pm |
|
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 April 2006 at 5:59pm |
|
|
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
Mark James
Old Croc
Joined: 15 January 2006 Location: rig side Status: Offline Points: 5306 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 April 2006 at 6:02pm |
|
oooooh they look so nice!
|
|
|
insert silly sentence here
|
|
|
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 April 2006 at 6:02pm |
|
advice from various threads...
don't cut the angles on the front of the horn, use a power planner and take of fine shavings until you get the right wafer thin edge. This is what i did with all my MT122's.
Something i've done (like timebombs suggestion) is to extend the top & bottom pieces to the front of the cab & only do small bit of the sharp mitre (so you only go a few milli's into the wood.)
You then end up with a well beefy looking cab & if you stopped it a cm further in, have a mounting for a grille too (i think they look too awesome to hide the innards though!) Otherwise as mal x posted a power plane is the way to go, the carbide tips last for years too (as long as you dont plane down too many wood screws!) As far as build sequence make the horn and the baffle first then build a box around them much easier.
there are enough angles on the plans to get you started, but you are on your own when it comes to calculating the angles of the flare components. if it helps, i found that a compound mitre angle of around 3.5 degress for the inner flare segments and the twice that for the outers was pretty close to being correct. as dom says, attempting to calculate them using trig is absolutely mind mangling, both he and i opted for a trial and error approach in the end. as i never cease to enjoy pointing out, there is not one square bit of wood in those cabintes.
Edited by Heathrow_B_line - 23 April 2006 at 6:04pm |
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 23 April 2006 at 6:19pm |
|
23-04-06 ----------------------------------------------------------- order P Audio SN 12B Neo order P Audio BMD 2723 order P Audio PH2723 Horn From proaudio parts ----------------------------------------------------------- Buy electric plane buy belt sander buy compressor and nailgun and spray gun buy ply to cover pool table [7ft x 4ft] buy black and decker work mate buy 18mm & 12mm ply [maybe get cut to length in store] buy router [will i really use it?] Edited by Heathrow_B_line - 23 April 2006 at 6:30pm |
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
james folkes
Old Croc
Joined: 08 January 2005 Location: United Kingdom Status: Offline Points: 3064 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 April 2006 at 3:05pm |
yes!!!! routers make sinking the recesses for your handles a doddle, cutting the round baffle holes a dream and they could be considered almost essential for rounding over the edges of your finished boxes. you could do it with the belt sander i suppose, but it will be quick, simple and precise with your friend the router. james. |
|
|
mardy hippy.
|
|
|
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 April 2006 at 3:32pm |
|
it would nice to have this jig.... to cut the circles out
Edited by Heathrow_B_line - 24 April 2006 at 3:33pm |
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 24 April 2006 at 3:33pm |
|
|
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
james folkes
Old Croc
Joined: 08 January 2005 Location: United Kingdom Status: Offline Points: 3064 |
Post Options
Thanks(0)
Quote Reply
Posted: 25 April 2006 at 5:24am |
|
ooh, i've got a little slack and pecker one just like that shown in the first
picture, that is my rounding over machine and is permanently set up for this task. the bit i have got is a bit bigger than the one shown in the second picture, i think the slightly smaller size would have been better, especially when it comes to rounding over two edges (eg mouth braces). the jig shown in the first picture will be a doddle to make, but to be fair my other two 1/2" machines came with a locating pin which goes on one of the fence rods enabling simple circle cut outs. it is plenty accurate too. if you are feeling particularly trick you could even use the rebated dado rail or tongue and groove construction, for which a router will be absolutely essential. it really does help the boxes come together more easily and accurately. just noticed the "ply to cover pool table". nice. what with that and your crt projector home cinema you must have quite a tricked out crib, i'm assuming you are saving pictures of the roof mounted hot tub for later... james. |
|
|
mardy hippy.
|
|
|
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 25 April 2006 at 7:19am |
|
u know us london fellas... we like our toys! tried to sell the pool table on sj awhile back to clear some space in my garage but mite come in handy now as a huge 7ft by 4ft work table... u always seem to run out of space when u start building things! im still unsure what primary saw to go for... ive already got a cheap £50 table saw for argos lurking somewhere in my shed... it does mitres but im thinking of maybe get a circular saw and making the aforementioned jigs to cut big pieces with and use the table saw for the mitre cutting. definitely get a router as there dirt cheap in screw fix! |
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
Heathrow_B_line
Old Croc
Joined: 11 January 2006 Location: United Kingdom Status: Offline Points: 7339 |
Post Options
Thanks(0)
Quote Reply
Posted: 25 April 2006 at 7:31am |
|
|
|
Produce a killer sound. Take no prisoners.
|
|
|
|
|
Post Reply
|
Page 123 12> |
| Tweet |
| Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |
Topic Options
Heathrow_B_line wrote:
