I'm planning a tower speaker using the SB Acoustics SB16PFC25-4 Coax: https://loudspeakerdatabase.com/SB/SB16PFC25-4-COAX
But in order to keep the size down, I'd really like to place it in a small, closed box. It'll be paired with a capable bass woofer, and can be crossed over 500 hz (or higher).
Can I get away with a 12-15L box? The Vas 31.3, Qts is 0.31 and EBP is 102.8. Another way of asking might be: does the XO frequency mitigate that the box is that much smaller than Vas, or will it still run the risk damaging the woofer?
But in order to keep the size down, I'd really like to place it in a small, closed box. It'll be paired with a capable bass woofer, and can be crossed over 500 hz (or higher).
Can I get away with a 12-15L box? The Vas 31.3, Qts is 0.31 and EBP is 102.8. Another way of asking might be: does the XO frequency mitigate that the box is that much smaller than Vas, or will it still run the risk damaging the woofer?
I think you can easily go as small as 7 liters, which is the volume for a Qtc=0.7 sealed box. Smaller than 7 liter might be possible, but I generally start use a Qtc of 0.7
The quality of the midrange might be improved with a larger box, however, so I like your concept of a 12 liter box.
The quality of the midrange might be improved with a larger box, however, so I like your concept of a 12 liter box.
Awesome, that makes the design simpler. I want a small footprint for these.
The woofer I'm thinking about is also from SB Acoustics: https://loudspeakerdatabase.com/SB/SB17CRC35-8
I'm still at sketching. I think I need to do a theoretical XO and have a look at the impedance as well.
The woofer I'm thinking about is also from SB Acoustics: https://loudspeakerdatabase.com/SB/SB17CRC35-8
I'm still at sketching. I think I need to do a theoretical XO and have a look at the impedance as well.
No, the opposite, a smaller sealed enclosure is 'stiffer'. At 500Hz xo - far above the fb - the difference isn't very big anyway.
I have that driver. It also works well in a small sealed box, with surprisingly strong bass. I use it in a two way bookshelf, 12"H x 9"D x 8"W. I use a 4th order crossover filter with it.
Nice. I'm looking at WinISD now and I'm thinking two circular vents close to the floor. With a 30L box and a tuning frequency of 34 hz it's linear at down to 300 hz and then drops 1 db (!) down to 40 hz. -3 db seems to be at ~34hz. That's going to be interesting in my listening room 🙂