It's the size of the box which is the main factor in LF response. Using bigger/more drivers allows you to go louder but the response will get worse at LF if you use the same size box.
eg If you have 1x12" in a 50ltr box box. adding another 50ltr box & 12" will give you 3dB more efficiency but the LF response remains the same. This is equivalent to a 100ltr box with 2x12".
If you use the 100ltr box with 1x12", you'll find your LF response goes lower than with 2x12". It's how much box each driver sees that determines LF response.
All this supposes the TS parameters of each unit is 'matched' to the size of the box .. but you'll still see this general trend if not. Why don't you play with one of the speaker box design programmes to get an idea of what is going on.
But if you have EQ, you can compensate for the poorer LF response of a 'small' box by boosting LF. More units mean you can use greater power for this boost.
eg If you have 1x12" in a 50ltr box box. adding another 50ltr box & 12" will give you 3dB more efficiency but the LF response remains the same. This is equivalent to a 100ltr box with 2x12".
If you use the 100ltr box with 1x12", you'll find your LF response goes lower than with 2x12". It's how much box each driver sees that determines LF response.
All this supposes the TS parameters of each unit is 'matched' to the size of the box .. but you'll still see this general trend if not. Why don't you play with one of the speaker box design programmes to get an idea of what is going on.
But if you have EQ, you can compensate for the poorer LF response of a 'small' box by boosting LF. More units mean you can use greater power for this boost.
I would suggest you look at an array of sealed subwoofers. Sealed subwoofers allow for smaller enclosures but at the cost of low sensitivity. An array increases sensitivity so the differences balance out.
Also, "One of the additional benefits of the array’s sensitivity increase is that for the same SPL
the individual drivers in the array are operated at much lower drive level which reduces
distortion levels."
Regards,
Dan
Also, "One of the additional benefits of the array’s sensitivity increase is that for the same SPL
the individual drivers in the array are operated at much lower drive level which reduces
distortion levels."
Regards,
Dan
The more drivers you have the higher the resulting maximum level at a certain frequency is, also in the bass.
so if a singe driver can do 60dB SPL at 20Hz, 16 can do 24dB more at lower frequencies.
You will need EQ to get that in balance with rest of the spectrum..