testing

gatemplin

crossover
[IMG]C:\Documents and Settings\Templins\My Documents\My Pictures\Crossover.JPG[/IMG]

HBombToo

interesting little circuit

gatemplin

It's a 4th order Linkwitz Riley parallel crossover with 3dB of baffle step compensation and 6dB of attenuation on the tweeter.....I hope:D

HBombToo

without getting out the calulator or pspice the tweet will receive half the real current since the tweet is ~ 6 Ohms. I think 1/2 power is about 6 dB spl... or close enough for government work.

HBomb

gatemplin

I think the first 3 ohm resistor would drop half the voltage, then the 6 ohm in parallel would eat half the current. So the tweeter actually sees one quarter of the power, 6dB less output. A 3dB increase takes double the watts. I got the values from a Lpad calculator.

What I am unsure of is the Low pass crossover values and the bafflestep compensation. I am still a newbie at this.

HBombToo

Originally posted by gatemplin
I think the first 3 ohm resistor would drop half the voltage, then the 6 ohm in parallel would eat half the current.

Ed Zachary

Originally posted by gatemplin

So the tweeter actually sees one quarter of the power, 6dB less output. A 3dB increase takes double the watts. I got the values from a Lpad calculator.

again agreed but I always confuse sound pressure and electrical power.

Originally posted by gatemplin

What I am unsure of is the Low pass crossover values and the bafflestep compensation. I am still a newbie at this.

assume low freq and and now the circuit is a series lr. Xl=2(3.14)*F*L so as low freq increases so does resistance. I would assume the sub impedance is 1 then trend it.

been a long time
HBomb