4 T48s and 2 Cosyne synergy horn: Canberra Oz
Posted: Mon Jul 07, 2014 8:28 am
Hey guys,
Been too busy building cabs to start a thread but thought I should get one up and running (the missus has put a 9pm curfew on power tools for the sake of the neighbors so what else am I going to do with the long cold evenings?)
We have been plugging away for the last few weeks now and have recently started to see the fruits of our labour! What was a whole pile of ply and sawdust can pretty quickly turn into a cab which is nice. No major stuff ups yet- and our time getting accurate cuts has paid off with a relatively issue free construction phase. Lots of reading and re-reading the plans, figuring out sketch up models and making lists (I'm a list kinda guy)
A few basics- we went with the Ande 15" driver- 12kgs a pop but with all the right looking specs- not to mention an ok price too! For the cabs we ended up going for a 24" wide (25" wide total) Cab made from a mix of the regular bunnings radiata cd ply and the marine grade hardwood ply. Radiata for the inside panels and braces, hardwood for the external panels. These cabs will win no lightweight competition- but hopefully the added timber density will help resist the cabs from denting/ scarfing when they get smashed around in transport/ getting hauled into the forest for a doof). With the plans we went for a 1/2 square back 1/2 angle back approach. I liked the handles on the top and wanted to keep that feature but also liked the shape of the angle back for the bottom. We have installed small pads for casters to go on on this panel and it seems to work really well. I looked at converting all the measurements to metric for this build but decided it was too much hassle. All my rulers, table saw and tape measure have both so I just paid attention for the first few days and now it's like 2nd nature.
We used the sika supergrip 30min construction adhesive for the first 2 cabs as the PL got lost by the freight company and it was actually really nice to work with. Best approach was to let it dry in beads then come along with a sharp chisel once it had set and get if off in one go. Our first few attempts at wiping it off as we went just left more chiseling/sanding work down the track.
In terms of the build I've got 2 of the T48s pretty much done. Got the 2nd side dry fit together to check for square/countersink screwholes and will be taking it apart for painting up into the throat. Still need to install speakon connectors and the driver cable. After that it is final filling, sanding and painting time. We are hoping to do something a little different with the colour scheme for this system- meaning the final steps are a bit funny. We want the front braces and the cab outer to be the same colour with the horn throat a different one. At the moment I think the best approach is to paint the throat with a couple of coats, then sinal install the 2nd side, fill and paint the outside, then install the separately painted brace module at the very end with some judicious sika (because if dries white) and a few brads. And by the way, how awesome is a brad nailer?!! never used one before this project and it has made all the difference for us. Quick, accurate and very versatile.
We are still chasing down a limiter and a big roll of cable to make our leads but hopefully we can get them working in the next few weeks!
We went out to a music night the other night at a local bar- Nosaj Thing and D Tiberio played (Horizonize supported). The kludge of a system they had rigged up was pushed to its absolute limits and took up a huge amount of floor space in a relatively small bar. Kinda encouraged me that what we are building will find its home in the local scene. On a side note- also been looking at unity/synergy horn designs that we might be able to build to pair with our system as monitors (the djs/artists need good sound too right?)
Anyway, bed time for me. Hope you enjoy the pics- will post more as we get further along. Feel free to drop comments/ ask questions.
Been too busy building cabs to start a thread but thought I should get one up and running (the missus has put a 9pm curfew on power tools for the sake of the neighbors so what else am I going to do with the long cold evenings?)
We have been plugging away for the last few weeks now and have recently started to see the fruits of our labour! What was a whole pile of ply and sawdust can pretty quickly turn into a cab which is nice. No major stuff ups yet- and our time getting accurate cuts has paid off with a relatively issue free construction phase. Lots of reading and re-reading the plans, figuring out sketch up models and making lists (I'm a list kinda guy)
A few basics- we went with the Ande 15" driver- 12kgs a pop but with all the right looking specs- not to mention an ok price too! For the cabs we ended up going for a 24" wide (25" wide total) Cab made from a mix of the regular bunnings radiata cd ply and the marine grade hardwood ply. Radiata for the inside panels and braces, hardwood for the external panels. These cabs will win no lightweight competition- but hopefully the added timber density will help resist the cabs from denting/ scarfing when they get smashed around in transport/ getting hauled into the forest for a doof). With the plans we went for a 1/2 square back 1/2 angle back approach. I liked the handles on the top and wanted to keep that feature but also liked the shape of the angle back for the bottom. We have installed small pads for casters to go on on this panel and it seems to work really well. I looked at converting all the measurements to metric for this build but decided it was too much hassle. All my rulers, table saw and tape measure have both so I just paid attention for the first few days and now it's like 2nd nature.
We used the sika supergrip 30min construction adhesive for the first 2 cabs as the PL got lost by the freight company and it was actually really nice to work with. Best approach was to let it dry in beads then come along with a sharp chisel once it had set and get if off in one go. Our first few attempts at wiping it off as we went just left more chiseling/sanding work down the track.
In terms of the build I've got 2 of the T48s pretty much done. Got the 2nd side dry fit together to check for square/countersink screwholes and will be taking it apart for painting up into the throat. Still need to install speakon connectors and the driver cable. After that it is final filling, sanding and painting time. We are hoping to do something a little different with the colour scheme for this system- meaning the final steps are a bit funny. We want the front braces and the cab outer to be the same colour with the horn throat a different one. At the moment I think the best approach is to paint the throat with a couple of coats, then sinal install the 2nd side, fill and paint the outside, then install the separately painted brace module at the very end with some judicious sika (because if dries white) and a few brads. And by the way, how awesome is a brad nailer?!! never used one before this project and it has made all the difference for us. Quick, accurate and very versatile.
We are still chasing down a limiter and a big roll of cable to make our leads but hopefully we can get them working in the next few weeks!
We went out to a music night the other night at a local bar- Nosaj Thing and D Tiberio played (Horizonize supported). The kludge of a system they had rigged up was pushed to its absolute limits and took up a huge amount of floor space in a relatively small bar. Kinda encouraged me that what we are building will find its home in the local scene. On a side note- also been looking at unity/synergy horn designs that we might be able to build to pair with our system as monitors (the djs/artists need good sound too right?)
Anyway, bed time for me. Hope you enjoy the pics- will post more as we get further along. Feel free to drop comments/ ask questions.
I'm worried that after shooting a brad, if it doesn't go all the way in, what then?? Hammer? Dremel to cut it off?
gasket install and leak check
You won't be disappointed. I'm actually pumped to come and hear the four of them myself - given they are 'The LOUDEST' >100Hz cabs in the range.