[jon_010101]

So, I've been scheming up some serious hifi upgrades, and one thing I have had in mind is going to an active system.

One possibility is to start from scratch, and build new speakers to be used with an active crossover and separate amplifiers.  But the other would be to modify my Diluceos to allow active use, by adding inputs direct to the tweeter and midwoofers, and pulling the existing crossovers outside to a separate enclosure (for use with conventional amplifiers).  If this worked well, I'd later add another channel for a pair of subwoofers.

My question for Danny: With this in mind, would it be advisable to base the active design on the passive filter, using the same slopes and crossover points?  Or, should I aim for steeper slopes?  I no longer can find schematics online, but I thought it was second order on the woofer and third order on the tweeter ~2kHz 

Unless I can find something awesome on eBay, I would likely be building the crossovers entirely from scratch and using vacuum tubes, so I'd need to figure out first what slopes and crossover point to build for.  Except for some attenuation, I don't plan to allow any major adjustments once it's put together.  It would be a Diluceo-specific crossover unit 

I'll be grateful for any suggestions... or, feel free to talk me out of this

[Hank]

Well, one piece of advice (remember what you paid for it ) is to leave them alone.  If you're going to invest the hours into desiging, building, tweaking an active crossover, then do it with current, better drivers.  The Neo-2X maybe?

[Danny Richie]

I agree with Hank.

The Diluceo had a ruler flat response. The chances of reaching that same result using an electronic crossover is slim, and I don't know if the end result would be an improvement.

I certainly wouldn't attempt it without a good measuring system.

I'd start with a new speaker and leave the Diluceo as a reference.