Next ?

[scottvalentin]

THAT looks pretty close to what you've measured!

[filmslayer]

THAT looks pretty close to what you've measured!

yes it does ... with that and what rpb suggested with the 225 tuned down -6db ...

[rpb]

OK, I got my sim pictures. I can't see yours, so I don't know how similar they are. Your hosting site wants me to sign up or something to see your pictures.

I did several sims. This one crosses lower, and needs a bigger coil.

[rpb]

Here's the woofer.

[rpb]

Here's the mid. I didn't take my own advice about the resistor location. Not on this one anyway.

[rpb]

Tweeter I guessed at the offsets.

[filmslayer]

my pics just dont show ? or you're clicking on them to see them betterb?


i've only used Xsim and at the risk of sounding ignorant i can't really read PCD .....

[rpb]

When I click on them to enlage, there's a problem. I can see them before clicking, but can't read many of the values.

Here's a partial sim with a higher woofer x-over. Steeper slope to push down the breakup.

[filmslayer]

ok , after looking at them i think i get what your doing ... will put it into Xsim in the morning ....

rite now i'm drinking cold beer and jam'in some Zep ... i plugged in one of my surrounds and turned on my subs , i nailed the mtm ! sounds great ...

[rpb]

The best part of doing x-overs is the audition following the work!

The mid is 2nd order electrical high pass, and damped second order low pass with a notch added at 10k.

The tweeter has a notch at 20k to pull the top end down.

[filmslayer]

The best part of doing x-overs is the audition following the work!

yep , my favorite part of building !

[rpb]

I like to check the mid padding resistor for heat while playing at close to maximum spl.

[PWR RYD]

OK, I got my sim pictures. I can't see yours, so I don't know how similar they are. Your hosting site wants me to sign up or something to see your pictures.

I did several sims. This one crosses lower, and needs a bigger coil.

In my humble opinion I think this sim by rpb will sound much better. The W/M xo point is lower with shallower slopes. The M/T xo is higher which should allow that small ribbon to play cleaner/louder. Basically there is a lot more contribution from the pair of mids, which is good. I'd give it a listen with and without the notch on the tweeter. You may like the extra top end lift.

[filmslayer]

i don't under stand pcd , in the the mid circuit where do i put the LCR and resistor ?

[rpb]

i don't under stand pcd , in the the mid circuit where do i put the LCR and resistor ?

The L ,C, and R are connected end to end with each other. (in series). Then, after the other x-over parts it connects in parallel with the mids. (There is no R on this mid sim.)

Same idea on the tweeter.