Raising the While Flag on 604 Project

[Seadweller]

If you really want to tweak, you should get a Behringer DCX2496 and an extra amp.

So, does this device require 2 amplifiers?

[Panomaniac]

So, does this device require 2 amplifiers?

Yes, with an active crossover you will need 4 channels of amplification for your speakers.
The amp to run the horns does not need much power, a watt or 2 will do, but more is of course OK.

I would suggest that you decide what type of amp you want to go with for the final system. Tube or solid state. It will make a difference to the tuning of the crossover. The amp used to run the horns in active mode will make less difference, at least for tonal balance. Neither of these need to be of superb quality right now, if you just want to tinker. A 5.1 channel home theater receiver with analog inputs would do the job if you want to go solid state.

But first thing to do is what Todd and others suggest. Take them outside. See what happens to the tonal balance. If you can, arrange it so that the crossovers are easy to swap. You'll want to listen to both. Start with the horns all the way down, then bring them in slowly.

And you're right, we aren't helpful at all in getting them sold.

[Seadweller]

Yes, with an active crossover you will need 4 channels of amplification for your speakers.
The amp to run the horns does not need much power, a watt or 2 will do, but more is of course OK.

Thanks...So, does the active crossover allow you not only to set the XO point and slopes, but also adjust specific frequencies, similar to an equalizer?

Seems to me that XO's are more than just slopes and crossover points, that there are notch filters, uplift circuits, and other circuits that manage the drivers output.

[Panomaniac]

Yes indeed, all that can be part of a crossover. Or the crossover can be very simple.

The nice thing about a digital crossover like the DCX2496 is that it allow you to do so many things. Most active crossovers have fixed filter types and don't allow to adjust each section independently.

But of course that comes with a price. Tweaking can be endless, if you let it.

[Steve Mac]

...
The nice thing about a digital crossover like the DCX2496 is that it allow you to do so many things. ....

Yeah I agree...and if you are an analog purist...it's still the best way to quickly determine the response you want...and THEN emulate the curves in the analog world!

[NKF]

I have a pair of the GPA 604 H-3's in a six foot box. I also use a small band pass sub with the speakers. I love the sound and the sub helps. Very good bass.

Nick