Originally Posted by
Robh3606
'I swapped out the E-145 for TAD 1602 with good results . so its tad 1602 2118 mid and the amt for the top i like what i here ,sounds promising . now i would love to get it all passive x-over any help ?"
If you have it running in an active set-up and you like the way it sounds, measures well, you can use the active voltage drives as a starting point. You would probably need to tweak it with a set of measurements and crossover sims.
To start from scratch you would need to measure the drivers mounted in the cabinet and use a crossover simulator for the rest.
Have you tried to find any TAD designs that use that driver combo? That would greatly simplify things with a good staring point.
Rob
- Posted by Tre' (P) on October 5, 2013 at 17:00:22In Reply to: RE: YUP posted by Ed Schilling on October 5, 2013 at 09:34:08:
"Well, I say "not in the signal path" because the Coil
and cap are across the voice coils as a "shunt" (I guess is a [COLOR=#009900 !important]good word[/COLOR]) and not "in line" with the voice coils as in a parallel network. " Ed, the cap IS in series (in line) with the Heil and the coil IS in series (in line) with the 126.
The red is the signal path for the HF and the green is the signal path for the LF.
At 10000Hz the coil's reactance is 80 ohms while the Heil's is 3.7 ohms so the 10k flows through the Heil, not the coil.
At 10000Hz the caps reactance is .8 ohms and the 126's is 8 ohms (or whatever it is) so the 10k flows through the cap, not the 126.
At 100Hz the coils reactance is .8 ohms while the Heil is 3.7 so the 100Hz flows through the coil, not the Heil.
At 100Hz the reactance of the cap is 80 ohms while the 126 is much lower so the 100Hz flows through the 126, not the cap.
It's really just as simple as that.
The cap is in series with the Heil and the coil is in series with the 126.
The real advantage of a series [COLOR=#009900 !important]crossover[/COLOR] (as you have already said) is that changes in the impedance of the drivers does not change the FR.
And that's a good thing.
Peace.
anyone understand the concept here ?