Duke set me up with a Birdhaus 48 about a month ago. I'd been skipping around in this thread and was really taken by how involved, helpful and present he seemed here, and decided to contact him and ask if something like a Hathor 1203 was full-range enough to also reproduce cleanish electric guitar and lap steel (my other instruments).
1. He took my question seriously and promptly replied that the Hathor was voiced to complement those instruments when a bass was going through it, so it was probably not the ideal voice for that application.
2. He apparently gave it some thought after the exchange and contacted me to suggest that a Birdhaus miiiiiiiiight work. He conducted a guitar test of his own and wrote to say he didn't think it had enough upper-end content after all. I pointed out that I was used to a guitar amp with a Peavey Scorpion 12 in it, which is pretty "flat" for a guitar speaker, and that I didn't use much, if any, distortion. He responded that yep, Scorpion 12s are flatter than many, and if that was what sounded good to me...
3. He sent me a Birdhaus to try out and offered to pay return shipping if it didn't work out.
The Birdhaus most certainly did work out. I love it. I play a four-string P-type bass through a Zoom preamp set to the cleaner end of the "Marshall Superbass" model, more or less, for just a smidge of classic rock bass grime, using an old Peavey M-3000 power amp (210 W @ 4 ohms). At this power level, with both ports unplugged, the low end is full but not farty, the mids convey that sort of pillowy blooming hint of dirt, and I can EQ the top end to bring the clank or subdue the clank and the Birdhaus is able to convey what I tell the EQ to do. I'm playing with drums and a Les Paul/Marshall halfstack and I can hear myself with even frequency coverage from anywhere my instrument cord will reach, including looking straight down at the top of the cabinet. Remarkable. I no longer have to position myself close to on-axis to hear the upper textures of the sound. My bandmates--neither of whom are gear-tweaker nerds like I am--both commented by the end of the first practice with the Birdhaus that they could a) hear me more clearly and b) were not getting skewered by the intense cone of higher frequencies experienced when on-axis with the driver in my previous practice cab.
I find I don't need to use any of the speaker sims in my Zoom to sound good even though the Birdhaus goes higher than what I'm used to. The top end reproductions seems smooth and natural to me, even with a slightly dirty bass sound.
What I've read on this thread suggests to me that I may be on the caveman end of the Audiokinesis customer spectrum, tonally speaking, and I think it's noteworthy that a boutique cab can bring the goods even when asked to do it lowbrow-style.
With a 19" 3U rack SS power amp on top of the 14" wide Birdhaus, I do experience the "visual blight of lateral overhang," but I'm learning to appreciate that. I do have a soft spot for jank. In fact it might be time to send an update to the Janky-A Rigs of Doom thread...
As an added bonus, both my guitar and lap steel come through with lots of clear tone and hard-hitting transients if I want them, but not harshly if I don't. I'm thrilled to have one rig that seems able to amplify all three instruments at adequate volumes, with ample room for EQ tweaks, and is pretty lightweight and portable to boot. The tweeterless configuration still goes higher than I need it to; I do use a combination of speaker sim and top-end-limiting shelving EQ with those instruments but it's easy to tweak and get sounding good and natural that way.
Thanks a million, Duke! You just drop-kicked me WAY uptown.