I am planning to build a smal speaker with a small sub (if you can call a 8" woofer a sub).
The small speaker will have a 6" Vifa woofer and 1" Vifa tweeter (models TC18WG49 and TC26TG05) the specs can be got from http://www.d-s-t.com/vifa/index.htm.
below this speaker I intend to add a small 8" woofer (active).
The 8" will provide bass reinforecement and also compensate for some difraction loss. The 8" woofer is a repaired Eminence woofer approx TS specs are Fs=35Hz and Qts 0.45. The cabinet of this woofer will act like a stand for the 6" 2 way described above.
1. can I use a 2ay 12db series XO with the Vifa drivers.
2. To make the cabinetry simple I intend using 4'x8' sheets of MDF and making the height of the speaker 4' (48"). Is this too tall? Should I put the 6" on top of the 1" so that the 1" can be closer to listening height (36-38").
3. At what height on the baffle should the 8" be? Roy Allison claims it should be as close to the ground as possible, else where I hear the center of the bass driver should be 16" (40cm) from the ground. And my common sense tells me it should as close to the 6" 2 way as phyisically possible so that all the sound is coming from as small a point as possible.
4. I intend to bend the cabinet side walls a la Sonus Faber Amati and Wilson Benesch Act 2. How thick a MDF can I bend. If the MDF is less than say 8mm (so that it is easier to bend) should I use layers. If I am using layers can I use lead sheet 2-3mm between the layers?
5. I intend to bolt the drivers to the cabinet instead of using screws as I want to integrate the drivers as solidly to teh cabinet as possible. Does is make sense to veneer the cabinet so that the bolts are covered/hidden. What are chances I burn a woofer or tweeter out. Usually I hear only tweeter burn out.
6. The baffle will be 30mm MDF. Since I am bolting the drivers shold I use a 3-4mm metal plate on the inside of the baffle so that the bolt does not bite into the wood?
7. I intend using a truss rod for each of the 6" and 8" drivers. The truss rod will be a plastic or metal tube filled with either lead shot, sand or thermacol pellets. Which combintion wouldone recomend?
Since I do not have regualr access to the net please email me at [email protected]
Regards
Navin
The small speaker will have a 6" Vifa woofer and 1" Vifa tweeter (models TC18WG49 and TC26TG05) the specs can be got from http://www.d-s-t.com/vifa/index.htm.
below this speaker I intend to add a small 8" woofer (active).
The 8" will provide bass reinforecement and also compensate for some difraction loss. The 8" woofer is a repaired Eminence woofer approx TS specs are Fs=35Hz and Qts 0.45. The cabinet of this woofer will act like a stand for the 6" 2 way described above.
1. can I use a 2ay 12db series XO with the Vifa drivers.
2. To make the cabinetry simple I intend using 4'x8' sheets of MDF and making the height of the speaker 4' (48"). Is this too tall? Should I put the 6" on top of the 1" so that the 1" can be closer to listening height (36-38").
3. At what height on the baffle should the 8" be? Roy Allison claims it should be as close to the ground as possible, else where I hear the center of the bass driver should be 16" (40cm) from the ground. And my common sense tells me it should as close to the 6" 2 way as phyisically possible so that all the sound is coming from as small a point as possible.
4. I intend to bend the cabinet side walls a la Sonus Faber Amati and Wilson Benesch Act 2. How thick a MDF can I bend. If the MDF is less than say 8mm (so that it is easier to bend) should I use layers. If I am using layers can I use lead sheet 2-3mm between the layers?
5. I intend to bolt the drivers to the cabinet instead of using screws as I want to integrate the drivers as solidly to teh cabinet as possible. Does is make sense to veneer the cabinet so that the bolts are covered/hidden. What are chances I burn a woofer or tweeter out. Usually I hear only tweeter burn out.
6. The baffle will be 30mm MDF. Since I am bolting the drivers shold I use a 3-4mm metal plate on the inside of the baffle so that the bolt does not bite into the wood?
7. I intend using a truss rod for each of the 6" and 8" drivers. The truss rod will be a plastic or metal tube filled with either lead shot, sand or thermacol pellets. Which combintion wouldone recomend?
Since I do not have regualr access to the net please email me at [email protected]
Regards
Navin