Anyone runing Altec 19's Active crossover

[Dylanl]

I found a older Crown 2 way crossover VFX2A and thought it might be cool to run my 19's active with tubes to the top and SS to the woofers.

Has anyone tried this?

FYI: 3 years ago I updated my original passive crossovers with new caps with stock values. Just wondering if I will hear a big difference.

[Tom Brennan]

The EQ built into the 19s passive crossover is vital to the speaker's' sound; if you use an active crossover and bypass the passive you'll have to compensate somehow for the loss of the EQ.

I think the 19 is one speaker best not bi-amped.

[John]

Everyone I know that has gone active with the 19's all ended up going back to passive.

My advice,

low level listening go with tubes and when you want to kick out the jams hook up some big old S.S. amps

[Zilch]

Clone the bridged-T HF comp filter (adjustable 30923) in the M19 XO, five inexpensive parts, and go for it.

[Dylanl]

Zilch, are you saying use the active or stay with the passive? I am not real savy when it comes to understanding how caps and such work but I can solder quite well. So if you could dumb down how to do it I will give it a whirl.

Thanks, Brett

[Zilch]

I'm saying use an active crossover to do the basic split at whatever frequency (500 - 1200 Hz) that works best, but add on the passive HF compensation from the M19 before the compression driver.

That's everything after C2, i.e., four resistors, an L-pad used as a variable resistor, and a capacitor.

[Dylanl]

So essentially its like adding the needed EQ for the horn to flatten out the response.