OOPS WRONG CHANNEL
Bertrand,
Tell me what you want from it: X-over?Anything else?
The whole site won't fit in a post but I'll give it a shot.
Cheers,😉
Bertrand,
Tell me what you want from it: X-over?Anything else?
The whole site won't fit in a post but I'll give it a shot.
Cheers,😉
I am designing and building an HT system for my basement...sort of a-theatre in a home type thing, but on a budget. Now that's why we have engineers, to do certain tasks in a certain budget. I chose Audax, because of the price, but after building the Left and Right fronts using their TW10E01 (I think that's it...) and the HM130Z2. Their are in a Transmission Line cabinet and use a first order Butterworth@4000Hz. The sound? AWESOME! Just awesome! Lacking bass, sure...but that's what my sonotube and 10" woofers from some old Technics are for.😀
BEST SHOT
Hi,
Anyone else having trouble accessing the Audax site??
THE CENTER CHANNEL SPEAKER
Crossover
The low-pass filter comprised of L1 and C1 constitutes a second-order electrical network. Similar to the L/R speaker, resistors R1 and R2 equalize power sharing between the two woofers. Notice that the woofers are connected in reverse polarity as required for 2nd-order in-phase crossovers. Because of its large value, an iron core or ferrite core coil can be used for L1. The specified DCR for L1 is 0.48W. We have experienced no undesirable effects on performance using the cored coil. The purest among you can replace L1 with a 12-gauge air-core coil. Just remember that this coil will weigh about 6 pounds and cost US $35-40 plus shipping!
The midrange crossover has 2nd-order high-pass and 3rd-order low-pass characteristics. The topology is a bit unusual in that it does not resemble the traditional high-pass/low-pass cascade. Rather the topology is derived from a low-pass to band pass transformation. You can think of the 400Hz high-pass filter as being made up of L2, C3 and R5. This combination provides a 2nd-order response to compliment the 2nd-order woofer roll off. R5 controls the Q of the 2nd-order response. C2, L3 and C7 make up a 3rd-order low-pass. This electrical filter combines with the natural response of the midrange to produce an overall 4th-order in-phase high-pass response at 3500Hz.
The tweeter high-pass filter is also a 3rd-order electrical filter. Again, this filter combines with the tweeter response to yield an overall 4th-order in-phase response. The high-frequency roll off capacitor used in the L/R speaker crossover (C5 of Fig. 7) is not needed here since the 3500Hz-crossover frequency is above the point where the tweeter response begins to rise.
Hi,
Anyone else having trouble accessing the Audax site??
THE CENTER CHANNEL SPEAKER
Crossover
The low-pass filter comprised of L1 and C1 constitutes a second-order electrical network. Similar to the L/R speaker, resistors R1 and R2 equalize power sharing between the two woofers. Notice that the woofers are connected in reverse polarity as required for 2nd-order in-phase crossovers. Because of its large value, an iron core or ferrite core coil can be used for L1. The specified DCR for L1 is 0.48W. We have experienced no undesirable effects on performance using the cored coil. The purest among you can replace L1 with a 12-gauge air-core coil. Just remember that this coil will weigh about 6 pounds and cost US $35-40 plus shipping!
The midrange crossover has 2nd-order high-pass and 3rd-order low-pass characteristics. The topology is a bit unusual in that it does not resemble the traditional high-pass/low-pass cascade. Rather the topology is derived from a low-pass to band pass transformation. You can think of the 400Hz high-pass filter as being made up of L2, C3 and R5. This combination provides a 2nd-order response to compliment the 2nd-order woofer roll off. R5 controls the Q of the 2nd-order response. C2, L3 and C7 make up a 3rd-order low-pass. This electrical filter combines with the natural response of the midrange to produce an overall 4th-order in-phase high-pass response at 3500Hz.
The tweeter high-pass filter is also a 3rd-order electrical filter. Again, this filter combines with the tweeter response to yield an overall 4th-order in-phase response. The high-frequency roll off capacitor used in the L/R speaker crossover (C5 of Fig. 7) is not needed here since the 3500Hz-crossover frequency is above the point where the tweeter response begins to rise.
PARTS LIST
Crossover Parts List
L1 = 6.8mH, 0.48 ohms, ferrite or iron core (#12AWG air core for the purist)
L2 = 1.2mH, 0.34 ohms, #16AWG
L3 = 2.7mH, 0.53 ohms, #16AWG*
L4 = 0.27mH, 0.24 ohms, #18AWG
C1 = 62mfd
C2 = 24mfd
C3 = 10mfd
C4 = 82mfd
C5 = 4.7mfd
C6 = 8 mfd
R1, R2 = 10 ohms, 25watts
R3 = 8 ohms, 10watts
R4 = 15 ohms, 10watts
R5 = 2 ohms, 10watts
Crossover Parts List
L1 = 6.8mH, 0.48 ohms, ferrite or iron core (#12AWG air core for the purist)
L2 = 1.2mH, 0.34 ohms, #16AWG
L3 = 2.7mH, 0.53 ohms, #16AWG*
L4 = 0.27mH, 0.24 ohms, #18AWG
C1 = 62mfd
C2 = 24mfd
C3 = 10mfd
C4 = 82mfd
C5 = 4.7mfd
C6 = 8 mfd
R1, R2 = 10 ohms, 25watts
R3 = 8 ohms, 10watts
R4 = 15 ohms, 10watts
R5 = 2 ohms, 10watts
An externally hosted image should be here but it was not working when we last tested it.
CRISS CROSS
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
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