Hi all,
I have everything I need to start building my new tower speakers. The plans are:
1) TMM, Seas 27TBFC on top, Peerless 830884 woofers on a TMM configuration.
2) Ported alignment, 4" port.
3) 96L enclosure size, tuned to around 30 Hz.
4) 1" chamfer all around.
5) 2" front baffle (MDF), 1" MDF all around.
6) XOver point around 1.4 KHz, 4th order, L-R.
7) Front facing port.
The design is inspired on the JBL L250, although (obviously) it's vastly different - this will be a 2.5 way, with a much smaller woofer. I also found the baffle shape helps quite a bit with tweeter diffraction.
These are the basics. I just delivered my plans to my local furniture builder. I'd love to hear any opinions on the driver configuration and positioning I arrived to. I have no experience with TMM speakers, so any help is greatly appreciated!
This is the front baffle configuration. The base is quite wide - 45 cms. This is because, in order to get 96L out of the enclosure, I'd need a box 40 cms. deep (quite deep for my room, actually).
I may build the columns a bit slimmer (40 cms. wide) and build the box 45 cms. deep. It doesn't really affect baffle diffraction measurements. Any ideas or hints? I'd assume a slimmer baffle would look prettier.
This is the baffle diffraction I'd be expecting:
I think the tweeter diffraction will be easily controllable, and considering the 27TBFC's dropping response below 1.7 KHz or so, it may actually be helpful for the crossover point I'm looking at.
At this point, I'd be very grateful for any opinions regarding driver placement and baffle width, since I'll give the local furniture maker an advance payment on Tuesday, and the design needs to be finalized by then (I don't expect major changes, though).
One thing that makes me think I may have my baffle configuration wrong is Jon's M8a design, where his woofer is a bit far away from the tweeter. Is this because of floor bounce, or any other reason? Am I on the right track?
EDIT : Changed thread name to a more descriptive one
I have everything I need to start building my new tower speakers. The plans are:
1) TMM, Seas 27TBFC on top, Peerless 830884 woofers on a TMM configuration.
2) Ported alignment, 4" port.
3) 96L enclosure size, tuned to around 30 Hz.
4) 1" chamfer all around.
5) 2" front baffle (MDF), 1" MDF all around.
6) XOver point around 1.4 KHz, 4th order, L-R.
7) Front facing port.
The design is inspired on the JBL L250, although (obviously) it's vastly different - this will be a 2.5 way, with a much smaller woofer. I also found the baffle shape helps quite a bit with tweeter diffraction.
These are the basics. I just delivered my plans to my local furniture builder. I'd love to hear any opinions on the driver configuration and positioning I arrived to. I have no experience with TMM speakers, so any help is greatly appreciated!
This is the front baffle configuration. The base is quite wide - 45 cms. This is because, in order to get 96L out of the enclosure, I'd need a box 40 cms. deep (quite deep for my room, actually).
I may build the columns a bit slimmer (40 cms. wide) and build the box 45 cms. deep. It doesn't really affect baffle diffraction measurements. Any ideas or hints? I'd assume a slimmer baffle would look prettier.
This is the baffle diffraction I'd be expecting:
I think the tweeter diffraction will be easily controllable, and considering the 27TBFC's dropping response below 1.7 KHz or so, it may actually be helpful for the crossover point I'm looking at.
At this point, I'd be very grateful for any opinions regarding driver placement and baffle width, since I'll give the local furniture maker an advance payment on Tuesday, and the design needs to be finalized by then (I don't expect major changes, though).
One thing that makes me think I may have my baffle configuration wrong is Jon's M8a design, where his woofer is a bit far away from the tweeter. Is this because of floor bounce, or any other reason? Am I on the right track?
EDIT : Changed thread name to a more descriptive one
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