I am still in the process of finding the right design for my HT using high efficiency pro drivers.
So far some of my favorites are the SEOS waveguide designs.
I am thinking about building one using the Eminence Delta 12lfa woofer but I want to get the best possible bass performance out of that driver.
Size in not a problem as long as it is not more than 45cm wide and 45cm deep (more or less).
I don't have a problem with height but I would like a design that brings the drivers at ear level when sitting.
Pi speakers uses that driver in a BR enclosure aound 105-110lt in the Three Pi speaker, Eminence recommends a BR enclosure between 25.5-102lt or a sealed at 19.8-28lt and WinISD recommends 218lt BR tuned @ 32Hz.
WinISD also gives me nice looking curves with boxes between 110-180lt tuned between 32-35Hz.
I did a few calculations for a TQWT enclosure and came up with boxes between 133-185lt
Most of them came out too deep but the smaller one looks fine with internal dimensions 86.8X38.3X41.6 (cm H/W/D) for an internal volume of 133.3lt and an f3 of 38.4Hz
If I model a box of 133.3 lt in WinISD tuned around 32Hz (using the same size port as the one in the TQWT enclosure) it looks nice with a sight downslping curve and an f3 at 34Hz and f6 at 27Hz (better than the f3 38.4 of the TQWT). .
The TQWT box is actualy just a BR box with a bracing that makes it act as a quarter wave tapped tube. What am I supposed to expect from it?
Will the TQWT design have any benefits compare to the simple BR box?
I cannot sim the response of the TQWT with WinISD and Hornresp is too complicated for me to even try a different design (it may be able to simulate the TQWT but I have no idea how).
Am I on the right track? Is there a better option that I haven't think of?
So far some of my favorites are the SEOS waveguide designs.
I am thinking about building one using the Eminence Delta 12lfa woofer but I want to get the best possible bass performance out of that driver.
Size in not a problem as long as it is not more than 45cm wide and 45cm deep (more or less).
I don't have a problem with height but I would like a design that brings the drivers at ear level when sitting.
Pi speakers uses that driver in a BR enclosure aound 105-110lt in the Three Pi speaker, Eminence recommends a BR enclosure between 25.5-102lt or a sealed at 19.8-28lt and WinISD recommends 218lt BR tuned @ 32Hz.
WinISD also gives me nice looking curves with boxes between 110-180lt tuned between 32-35Hz.
I did a few calculations for a TQWT enclosure and came up with boxes between 133-185lt
Most of them came out too deep but the smaller one looks fine with internal dimensions 86.8X38.3X41.6 (cm H/W/D) for an internal volume of 133.3lt and an f3 of 38.4Hz
If I model a box of 133.3 lt in WinISD tuned around 32Hz (using the same size port as the one in the TQWT enclosure) it looks nice with a sight downslping curve and an f3 at 34Hz and f6 at 27Hz (better than the f3 38.4 of the TQWT). .
The TQWT box is actualy just a BR box with a bracing that makes it act as a quarter wave tapped tube. What am I supposed to expect from it?
Will the TQWT design have any benefits compare to the simple BR box?
I cannot sim the response of the TQWT with WinISD and Hornresp is too complicated for me to even try a different design (it may be able to simulate the TQWT but I have no idea how).
Am I on the right track? Is there a better option that I haven't think of?
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