AI Corus

**Adrian Cho** · #1 09-27-2006, 10:38 AM

Check out the new AI Corus. Intended for guitar but I wonder how it would sound with bass. May alleviate some of the down-firing woofer concerns.

**Chris Fitzgerald** · #2 09-27-2006, 11:00 AM

Link

Bob Branstetter · #3 09-27-2006, 11:27 AM

Quote:

Originally Posted by Adrian Cho

Check out the new AI Corus. Intended for guitar but I wonder how it would sound with bass. May alleviate some of the down-firing woofer concerns.

It looks to be a Coda with a different crossover network. Same Price - Same Cabinet - Same Size Speakers.

**Adrian Cho** · #4 03-31-2007, 10:21 AM

I wonder if anyone has had a chance to hear one of these with a bass? It does say on AI's website and also in Bolo's post in this thread that some bassists do use and prefer it to the regular AI combos.

fdeck · #5 03-31-2007, 11:39 AM

I know a couple guitarists who I will have to tell about this.

bolo · #6 04-01-2007, 08:11 PM

Yeah, actually Rick Jones was the one who told me that some DB players prefer the Corus now over the Contra.

Bob B. is correct - It is still a down-firing design. And the # and size of the drivers are the same. And I think Rick said that yes the crossover is somewhat different.

But as I understand it, the major difference according to Rick is that the Corus uses a more efficient driver w/ a paper cone. I did not ask specifically, but I assumed he was referring to the downfiring 10" driver.

He did go on to say that at least one of the folks who tested it was left with the impression that it performed "more like" a front-firing cab. I could be oversimplifying it, and I could be wrong, but when I hear "more efficient", I think of a speaker that can go louder given the same input signal than a less efficient one.

I should emphasize (since Rick emphasized it with me), that an awful lot of this has to do with how each individual make and model of driver (and its given sonic characteristics) and the tuning of the cabinet work together when combined, which obviously they have spent a lot of time on.

So even though it may share many of the same physical traits with the Contra, and looks very similar in outward appearance, I gathered that the sound may actually be more different than you might expect.

Maybe those w/ some firsthand experience w/ DB will chime in.

drurb · #7 04-02-2007, 09:04 AM

Quote:

Originally Posted by bolo

I should emphasize (since Rick emphasized it with me), that an awful lot of this has to do with how each individual make and model of driver (and its given sonic characteristics) and the tuning of the cabinet work together when combined...

Absolutely true. This is an important points and emphasizes why you cannot replace a driver in a well-designed cabinet with any driver of the same size and expect it to sound good at all. Much of this is codified and formalized in what are referred to as the Thiele-Small alignments. If you're interested, look here.

Wilbyman · #8 04-02-2007, 09:08 AM

I'm kinda intrigued with this. I assumed the difference was that more sound (lower freqs) were coming through the 5" and that's why it behaved more like a front-firing cab.

W

**Adrian Cho** · #9 04-02-2007, 11:53 PM

Quote:

Originally Posted by bolo

But as I understand it, the major difference according to Rick is that the Corus uses a more efficient driver w/ a paper cone. I did not ask specifically, but I assumed he was referring to the downfiring 10" driver.

To quote the text on BobG's site:

The Corus is identical to the Coda R except for the special design woofer, which replaces the standard down-firing speaker in the Coda R. The woofer has been replaced with a more efficient one than is used in the Coda R, and the crossover network is changed to accommodate the new woofer.

Wilbyman · #10 06-28-2007, 09:51 AM

Anybody tried one of these with URB yet? I'm still pretty curious. I love me some AI gear.

W