I think sb12pac sounds just fantastic!
but as always, it does not matter how good things are, we just want more, in my case i want a tad more bass reach, not much, only slightly
a small 4.5" midwoofer with a free air resonace at ~45hz and total Q of 0.3 would suit my needs perfect, any ideas?
but as always, it does not matter how good things are, we just want more, in my case i want a tad more bass reach, not much, only slightly
a small 4.5" midwoofer with a free air resonace at ~45hz and total Q of 0.3 would suit my needs perfect, any ideas?
Something like the peerless 830855 might do bass in a smaller ported enclosure, but at 4 inches, there are going to be a lot of tradeoffs. I would say the sb12pac is better overall, and if you make a solution that comfortably reaches 80hz, turning it into a 2.1 setup is a much better idea if it needs to be compact
The 12PAC PR will not help. With a single it's useless but 2 helps but fine tuning is an issue.
Better to increase the Fb to give the roll off a hump which gives a more balanced bottom end. I've tuned mine to 78Hz which gives an F3=72Hz.
See pic... green vented, purple PRx2.
I've used a few 4" midwoofers such as the 830870, NE123W-08 but they don't go lower. The best for a bit of more bottom end is SB12NRX25-4 as it can give an F3 below 60Hz. Look at Jeff Bagby's article on the Soprano and note the suggested vent tuning to give a roll off hump.
Better to increase the Fb to give the roll off a hump which gives a more balanced bottom end. I've tuned mine to 78Hz which gives an F3=72Hz.
See pic... green vented, purple PRx2.
I've used a few 4" midwoofers such as the 830870, NE123W-08 but they don't go lower. The best for a bit of more bottom end is SB12NRX25-4 as it can give an F3 below 60Hz. Look at Jeff Bagby's article on the Soprano and note the suggested vent tuning to give a roll off hump.
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Thank you! Just as i thought, slightly high fs and qts so the low end response will not really meet my needs, to bad for otherwise nice driver (excel magnesium)
Do you know the Wavecor SW118WA02 ?
f3 = 42 Hz in 6 liters or 48 hz in 4,6 liters
http://www.wavecor.com/Wavecor_SW118WA02_enclosure_simulations.pdf
But you need a tweeter that can reach 1200 hz like this : TW030WA11
The following project is based on these 2 drivers and get very good reviews in Germany :
Bernd Timmermanns’ Micro Block MK2 compact loudspeakers – audio at home
f3 = 42 Hz in 6 liters or 48 hz in 4,6 liters
http://www.wavecor.com/Wavecor_SW118WA02_enclosure_simulations.pdf
But you need a tweeter that can reach 1200 hz like this : TW030WA11
The following project is based on these 2 drivers and get very good reviews in Germany :
Bernd Timmermanns’ Micro Block MK2 compact loudspeakers – audio at home
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