ClaudeJ1 Posted July 22, 2008 Share Posted July 22, 2008 In my quest fro sonic nirvana, I just scored 2 plus 2 Peavey MB-1 Midbass horns within a week, from 2 sources. One pair in large, heavy cabinets, one pair without. I know this is a Klipsch board, but I coudn't find an MSSM to go on top of my MWMS's, so this is the closest I could find that I can afford. This horn is amazinglooking. It has a Phase plug that the 12" woofer feeds into, just like acompression driver, with a molded "salad bowl" sized back air chamber,totally sealed with 8 bolts. There is a 4" voice coil metal cap on it. It has an efficiency of 109 db/watt. It'ssupposed to be the most kick butt mid bass horn ever made but few weresold and made because of the size and expense. Shipping weight with allthe lumber housings was over 350 lbs. According to a 1981 spec sheet,the horn is good from 150 Hz to 1.2 Khz which is PERFECT for 98% of thevocal range without Xover anomalies................we shall see. Ishould get to plug one into my left channel tomorrow, since I haveparts from a KG-4 Xover that I can use........ to see how it comparewith my reference LaScala midbass (with the amazing K43 woofer). May the best horn channel win!! I had a friend stand next to it for scale. Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 22, 2008 Author Share Posted July 22, 2008 front view Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 22, 2008 Author Share Posted July 22, 2008 back view Quote Link to comment Share on other sites More sharing options...
jacksonbart Posted July 22, 2008 Share Posted July 22, 2008 Looks like a wood chipper in that last pic. Quote Link to comment Share on other sites More sharing options...
oldenough Posted July 23, 2008 Share Posted July 23, 2008 Anything less would be trying to defy the laws of physics.[:S] Quote Link to comment Share on other sites More sharing options...
Guest srobak Posted July 23, 2008 Share Posted July 23, 2008 Reminds me of Community's "Leviathan"... Quote Link to comment Share on other sites More sharing options...
Coytee Posted July 23, 2008 Share Posted July 23, 2008 I had a friend stand next to it for scale How do we know your friend isn't a muchkin, standing only 2' tall? [] Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 23, 2008 Author Share Posted July 23, 2008 Anything less would be trying to defy the laws of physics. Good point. You can't do 150 hz. with a tweeter sized horn. Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 23, 2008 Author Share Posted July 23, 2008 Holy Decibels, Batman!! That Leviathan setup makes my midbass horn look like a super-tweeter, wow. Where was that setup and how long ago? Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 23, 2008 Author Share Posted July 23, 2008 He's a giant munchkin at 5'10"..................................smart***!!! Quote Link to comment Share on other sites More sharing options...
Guest srobak Posted July 23, 2008 Share Posted July 23, 2008 I don't recall where that pic is from, but I know the Carolina Panthers have a bunch in their stadium. I had to help re-position the ones at Spartan Stadium ages ago during a remodel (there were 4), but I think they are now long gone. 6 feet tall, 6 feet wide, and 7 feet deep. Absolute monsters at 750lbs... loaded with 6 15in drivers, 1 4in mid coupled to ahorn and 2 2.8in highs coupled to horns. 1200w cont, 3000w peak/prog, 112db http://www.robak.net/downloads/leviathan-2.pdf Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 23, 2008 Author Share Posted July 23, 2008 In my quest fro sonic nirvana, I just scored 2 plus 2 Peavey MB-1 Midbass horns within a week, Lordy, seems more like a quest for a double hernia! I guess you have a heckabig room? Actually, without the 18 cubic foot 3/4 Baltic birch enclosure, the horns are not that heavy. My basement is about 26x40 and split down the 26 foot dimension. To the left of the laundry room door, it is 6 feet to the cement wall and the room is 13.3 feet wide, which allows me to put everything in that area since it is useless for anything else. I had Khorns in there before, so, effectively the MWMS don't take up any more space. They do give me a large platform to put stuff on, including the upside down LaScala you see in my Avatar. I plan on aligning all of the voice coils on the horns back to the corners for acoustic time alignment. I want to control the position, angle, intensity of each horn separately and I'm investing in a measurement system next.......It will end up as a 3 or 4-way setup with passives or active Xover. Quote Link to comment Share on other sites More sharing options...
Hifi jim Posted July 23, 2008 Share Posted July 23, 2008 Looks like a wood chipper in that last pic. Second the wood chipper comparison. I think that's what Claude should call it. But you have to say it with that Frances McDormand Fargo accent; "Is that your friend back there in the wood chipper?" Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 23, 2008 Author Share Posted July 23, 2008 Changed the Xover point with the K55/K400 to 1Khz and left the JBL where it was, of course since all phoenolic drivers die at 6Khz. Here's the best part. I tried an old Peavey 22A driver in the K400, still crossed at 1Khz, but now I don't need the JBL superteeter. Yes the HF dispersion is really narrow, especially compared to a JBL 2404, but it's crisp, clean and detailed. The tonality seems to be there, with amazing lower midrange detail from the MB-1, especially on vocals, since it covers the ENTIRE vocal range without a Xover point..........not sure yet about upper midrange/lower treble as I'm only playing with the Crites Autoformer, caps and chokes..........First order only. I will want to use the Behringer DCS 2496 later on to play with Xover points, slopes, and PEQ's etc. But for now, the crude results are encouraging. I just never thought I'd be using a K400 as a tweeter, but in looking back at PWK's original data in the Klipsch papers, he had curves showing that thing going way up there with a metal diaphragm driver in about 1964. Quote Link to comment Share on other sites More sharing options...
Moderators dtel Posted July 23, 2008 Moderators Share Posted July 23, 2008 Looks about the right size for MWM's. [] Quote Link to comment Share on other sites More sharing options...
ClaudeJ1 Posted July 23, 2008 Author Share Posted July 23, 2008 Looks about the right size for MWM's. Good of you to notice. I thought so too. As to the MB-1, it is the rarest and most efficient one from Peavey. The phase plug allow it to have to HF response, I guess. I noticed way more detail in the mid bass than the LaScala L vs. R channel. I may be selling 2 LaScalas soon.................. Quote Link to comment Share on other sites More sharing options...
soundbound Posted July 24, 2008 Share Posted July 24, 2008 Very nice looking horns and drivers! Quote Link to comment Share on other sites More sharing options...
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