Re: Fun Stuff--Quick Questions

Posted by nl (A) on February 11, 2007 at 18:24:06

In Reply to: Fun Stuff--Quick Questions posted by Dr Deville on February 11, 2007 at 15:58:39:

The XO is a Behringer non-digital model, the CX2200 or something like that. You can get them on eBay for less than $100. They are XLR only so you have to make your own RCA-XLR cables, which is easy.

I'm referring to line-level passive. Actually I already made a PLLXO for a 100hz cutoff, but I haven't been using it because it's for 100K input and my amps are 10K. Actually the present amps are inverted chip amps, and I'm not so sure about using filtering before an inverted stage. Maybe it's OK.

I didn't try going higher than 200hz, but I don't think I'd want to. It's fun to play with an active XO because you can do things like mute out individual drivers and listen to what is coming through each driver. 200hz seems like a natural cutoff between bass information (drums and bass) and midrange -- vocals and lead instruments etc. Maybe 300hz would be OK too. But you can really tell why the 800hz-1200hz range is dangerous. You're really splitting the sound in half, with the fundamentals of vocals and lead instruments coming from one driver and the overtones from another. Put it this way -- you can listen to the FRs crossed at 200hz and enjoy the music, but listening to the Altecs crossed at 800hz produces just noise.

As for the "grunge" I was mainly referring to the problems of a crossover in the sensitive voice range. After all, I was using the same XO at a lower point for the FRs as well. However, the XO itself adds a lot of electronic grunge to the sound.

Anyway, I tried 200hz at it was a nice compromise between freeing up the FR by cutting out the bass and preserving the FR cohesive sound.

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Follow Ups Full Thread

Topic - this week's OB experiments and conclusions - nl 14:21:10 02/11/07 (24)

hey freddyi ! i can tell you that broun sound uses a - snkby 12:25:37 02/12/07 (0)

Re: this week's OB experiments and conclusions - nullspace 08:05:33 02/12/07 (0)

Re: this week's OB experiments and conclusions - Vince S 00:32:04 02/12/07 (0)

Fun Stuff--Quick Questions - Dr Deville 15:58:39 02/11/07 (3)

Re: Fun Stuff--Quick Questions - nl 18:24:06 02/11/07 (2)

Gracias, Playing "Big" - Dr Deville 23:39:44 02/11/07 (1)

Re: Gracias, Playing "Big" - nl 09:15:36 02/12/07 (0)

this week's OB experiments and conclusions - hitsware 15:29:34 02/11/07 (10)

Is the xover xcessable on the Silver Iris - hitsware 17:08:01 02/11/07 (9)

Re: Is the xover xcessable on the Silver Iris - freddyi 17:31:16 02/11/07 (6)

I wonder how far you'd have to bend to adjust this one ? - hitsware 17:40:34 02/11/07 (5)

Re: I wonder how far you'd have to bend to adjust this one ? - freddyi 17:52:52 02/11/07 (4)

Re: the 'price is right' on this one...... - hitsware 17:59:27 02/11/07 (3)

Re: the 'price is right' on this one...... - freddyi 18:15:17 02/11/07 (2)

too much ...... $1 / inch is the 'golden ratio' ........... - hitsware 19:17:48 02/11/07 (0)

$11 (nt) Re: the 'price is right' on this one...... - Dr Deville 18:55:01 02/11/07 (0)

Is the xover xcessable on the Silver Iris - hitsware 17:16:43 02/11/07 (1)

Re: poor man's Silver Iris :) - hitsware 17:28:43 02/11/07 (0)

Re: this week's OB experiments and conclusions - freddyi 15:15:26 02/11/07 (5)

Re: this week's OB experiments and conclusions - nl 18:38:59 02/11/07 (4)

Re: this week's OB experiments and conclusions - JANDG 20:59:39 02/13/07 (0)

What About Dual FR Drivers? Re: this week's OB experiments and conclusions - Dr Deville 03:03:25 02/12/07 (0)

Wideband Choices --FF225K? Re: this week's OB experiments and conclusions - Dr Deville 23:54:55 02/11/07 (0)

Re: this week's OB experiments and conclusions - freddyi 19:29:16 02/11/07 (0)

Follow Ups

Re: Fun Stuff--Quick Questions - nl 18:24:06 02/11/07 (2)

Gracias, Playing "Big" - Dr Deville 23:39:44 02/11/07 (1)

Re: Gracias, Playing "Big" - nl 09:15:36 02/12/07 (0)

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