125A and 127A are the same driver, except for the inverted dome on 125A. 127H is the ferrite magnet version (the others are alnico,) which I prefer. Here's 127H (as I recall) in KLH 6 with the same waveguide BmWr75 used:
http://audiokarma.org/forums/showthread.php?p=2132952&highlight=KLH-6#post2132952
Next pic down shows a new, less expensive version of that waveguide, for use with 1" thread-on compression drivers such as the EconoWave Selenium, in Large Advent.
I posted the closed-box performance of 127H earlier in this thread:
http://audiokarma.org/forums/showthread.php?p=1806222#post1806222
Those woofers are used ported in several well-liked JBL bookshelves such as L26, L36, L40, L50, etc.. That's virtually a no-brainer, but I'll have to run the calcs using AS-10 volume.
127H-1 is somewhat of a different animal; we used it here because it has twice the power handling capacity of the non "-1" versions.
We are just beginning work with this new waveguide, but simply using the standard EconoWave crossover with an inexpensive Selenium driver gives a good starting performance. We'll likely be modifying the compensation filter in that crossover to improve this, but it will probably just mean replacement of a couple of inexpensive components:
http://audiokarma.org/forums/showthread.php?p=2247049#post2247049
Bottom line: The less expensive and less complicated version of BMWr75's AS-10 project is EconoWave using the 8" square waveguide.... :yes:
http://audiokarma.org/forums/showthread.php?p=2132952&highlight=KLH-6#post2132952
Next pic down shows a new, less expensive version of that waveguide, for use with 1" thread-on compression drivers such as the EconoWave Selenium, in Large Advent.
I posted the closed-box performance of 127H earlier in this thread:
http://audiokarma.org/forums/showthread.php?p=1806222#post1806222
Those woofers are used ported in several well-liked JBL bookshelves such as L26, L36, L40, L50, etc.. That's virtually a no-brainer, but I'll have to run the calcs using AS-10 volume.
127H-1 is somewhat of a different animal; we used it here because it has twice the power handling capacity of the non "-1" versions.
We are just beginning work with this new waveguide, but simply using the standard EconoWave crossover with an inexpensive Selenium driver gives a good starting performance. We'll likely be modifying the compensation filter in that crossover to improve this, but it will probably just mean replacement of a couple of inexpensive components:
http://audiokarma.org/forums/showthread.php?p=2247049#post2247049
Bottom line: The less expensive and less complicated version of BMWr75's AS-10 project is EconoWave using the 8" square waveguide.... :yes:
