I've designed 2 boxes for the Beyma 15P80ND, in its (i think), second iteration (06/2014):
- 15P80ND (V2) Technical file
The baffle was designed for this version exact dimensions:
It seems that around 11/2020, Beyma released a V3 version:
- Beyma 15P80ND V3 Technical file
The T/S parameters, as well as the dimensions are different for V3, and more specifically, the inner baffle (1) , that now is 352mm:
Moreover, the price for the Beyma 15P80ND has increased 100€ per unit, from 300€ to 400€.
The only alternative with the exact dimensions of the Beyma 15P80ND (V2) is the Beyma 15MC700Nd.
- Beyma 15MC700Nd technical file
The Beyma 15MC700Nd is also cheaper (282€ vs 400).
This driver will cover the frequencies bellow 350/300Hz.
I tried to model the driver, but either i've made a mistake, or the T/S parameters from the technical file aren't correct (file attached).
I can't find any feedback for the Beyma 15MC700Nd, except their introduction in AudioXpress.
Based on the above, is the Beyma 15MC700Nd a good replacement?
PS: The boxes are already built!
- 15P80ND (V2) Technical file
The baffle was designed for this version exact dimensions:
- Inner baffle (1) (3) = 388 mm
- Outer baffle (2) (4) = 349.5 mm
It seems that around 11/2020, Beyma released a V3 version:
- Beyma 15P80ND V3 Technical file
The T/S parameters, as well as the dimensions are different for V3, and more specifically, the inner baffle (1) , that now is 352mm:
Moreover, the price for the Beyma 15P80ND has increased 100€ per unit, from 300€ to 400€.
The only alternative with the exact dimensions of the Beyma 15P80ND (V2) is the Beyma 15MC700Nd.
- Beyma 15MC700Nd technical file
The Beyma 15MC700Nd is also cheaper (282€ vs 400).
This driver will cover the frequencies bellow 350/300Hz.
I tried to model the driver, but either i've made a mistake, or the T/S parameters from the technical file aren't correct (file attached).
I can't find any feedback for the Beyma 15MC700Nd, except their introduction in AudioXpress.
Based on the above, is the Beyma 15MC700Nd a good replacement?
PS: The boxes are already built!
Yup, you entered one parameter wrong - SD is 880cm2, not 8800.
That seems to have thrown off the program's sensitivity predictions, even though the calculated values in the driver record seem to not change when it's reset to the correct value.
HTH,
David.
That seems to have thrown off the program's sensitivity predictions, even though the calculated values in the driver record seem to not change when it's reset to the correct value.
HTH,
David.
I can swear i've looked at all parameters several times 🙁
Thank you, i was able to model both and they look similar.
For a 40L box (Blue 15P80Nd vs Red 15MC700Nd):
- 200W each:
- Reaching xmax at 20Hz (300W for 15P80Nd vs 450W for 15MC700Nd):
They seem similar enough, and given the fact that the 15MC700nd has the exact box dimensions while being 120€ cheaper, i think i'll go with the 15MC700nd.