This project started 4 years ago, but lots of things happened in between and i was only able to complete the speakers today
Design
Here the speaker dimensions, as designed 4 years ago:
Drivers
- Beyma 15MC700nd: X < 350Hz
- AE TD12M: 350 < X < 1500Hz
- Beyma TPL-150H: 1500Hz < X < 20000Hz
(Crossover points will be dictated by real measures, but should be around those values).
Crossover will be Active, using a Monacor DSM-48LAN.
Boxes
Here the empty boxes, before stuffing and final coating:
Final Speakers
(sorry for the low image quality, i'm a really bad photographer)
Grills off:
Grills On:
One full speaker weight around 60kgs!
Some details
The backplate for the TPL-150H was removed, leaving the felt protection:
Drivers were stuffed with a mixture of:
- 4mm Bitumen pads glued to the walls
- Wool felt glued to the bitumen pads
- One high density rockwool 70 kg/m³ wall at the middle of the box
- Low density "fluffy" rockwool 30 kg/m³
- Raw wool
Initial Driver Measurements
(just for checking everything was ok)
A nearfield measure for both TPL-150H boxes (measured indoor, with ceiling at 1.8m at the measurement position):
A nearfield measure for both Beyma 15MC700nd boxes (measured indoor, with ceiling at 1.8m at the measurement position):
(i accidently removed the measures for the AE TD12M, but both tracked perfectly as well).
You can find detailed measurements for the AE TD12M on drivervault.
Finally, a nearfield measure for all drivers (measured indoor, with ceiling at 1.8m at the measurement position):
Next step
I'm now waiting to receive a 1200mm x 610mm x 3mm MDF board, so i can draw the exact positioning for the 0º to 180º measurement using the Ground plane technique, to get the required measures to use with VituixCAD for crossover development.
I'll be requiring your help for fine tuning the crossover once i have all the required measures, in order to obtain the best result possible
Design
Here the speaker dimensions, as designed 4 years ago:
Drivers
- Beyma 15MC700nd: X < 350Hz
- AE TD12M: 350 < X < 1500Hz
- Beyma TPL-150H: 1500Hz < X < 20000Hz
(Crossover points will be dictated by real measures, but should be around those values).
Crossover will be Active, using a Monacor DSM-48LAN.
Boxes
Here the empty boxes, before stuffing and final coating:
Final Speakers
(sorry for the low image quality, i'm a really bad photographer)
Grills off:
Grills On:
One full speaker weight around 60kgs!
Some details
The backplate for the TPL-150H was removed, leaving the felt protection:
Drivers were stuffed with a mixture of:
- 4mm Bitumen pads glued to the walls
- Wool felt glued to the bitumen pads
- One high density rockwool 70 kg/m³ wall at the middle of the box
- Low density "fluffy" rockwool 30 kg/m³
- Raw wool
Initial Driver Measurements
(just for checking everything was ok)
A nearfield measure for both TPL-150H boxes (measured indoor, with ceiling at 1.8m at the measurement position):
A nearfield measure for both Beyma 15MC700nd boxes (measured indoor, with ceiling at 1.8m at the measurement position):
(i accidently removed the measures for the AE TD12M, but both tracked perfectly as well).
You can find detailed measurements for the AE TD12M on drivervault.
Finally, a nearfield measure for all drivers (measured indoor, with ceiling at 1.8m at the measurement position):
Next step
I'm now waiting to receive a 1200mm x 610mm x 3mm MDF board, so i can draw the exact positioning for the 0º to 180º measurement using the Ground plane technique, to get the required measures to use with VituixCAD for crossover development.
I'll be requiring your help for fine tuning the crossover once i have all the required measures, in order to obtain the best result possible