Disassembling Acoustic B200 combo

Discussion in 'Amps and Cabs [BG]' started by WilliamSandoval, May 12, 2013.

  1. I have an Acoustic B200 combo. I use it for recording. I'm also a carpenter. I was thinking about building an Acoustic 361 cab which incorporates a folded horn design. I would remove the amp and speaker from my B200, build an enclosure for the amp and put the speaker into the 361 cab. It's basically an Acoustic 360/361, but with Acoustic B200 parts. Could it be done? The speaker would be permanently wired to the head just like a combo.
  2. Well first of all the ACC 360/361 was a preamp only head (360) and a self powered folded horn cab (361) loaded with a 18" Cerwin Vega driver. No relation to your G.C. Acoustic B200.
    That said, do not scale down the cab. It already has a high roll-off point. Whether the 15" G.C. Acoustic speaker will operate well in that speaker "plug" is unknown. Could be a fun project if you don't go into it with any expectations.
  3. I know about the separate power amp/preamp thing on the original 360. I would design the cab to fit the 15" speaker. If I can't do it, I'll put my B200 back together.
  4. Use the same speaker "plug" (sealed wedge) just cut the hole for the 15" instead of the 18". Keep all other cab details the same. :)
  5. alaskaleftybass

    alaskaleftybass Will Hanbury, Jr. In Memoriam

    Mar 21, 2012
    Sitka, Alaska
    I hope you do it! For many many years I've imagined a 15" folded horn cabinet and this would be a good test. I think when I was in college my friend took apart the Acoustic cab, then scaled down the dimensions. It was 40" tall by 20" wide and 15" deep. There was a 3" wedge in back and horns top and bottom. I don't think it was so scientific but it looked cool lol.

    Another bit of trivia: In the late 70's Kasino, a subsidiary of Kustom, built a combo amp with just the design you have in mind. It was tall and narrow, the amp was built in, and if you pulled the grill off you would see a mini folded horn design. It even had kickback wheels!

    Please keep us posted on this super cool project!

    Good luck! :bassist:
  6. Spent


    May 15, 2011
    Upstate NY
    Many years ago I built a folded horn speaker based on the Klipsch KHorn. It was a challenge, but it ended up sounding and looking amazing. To truly be a bass horn, it needs to sit in the corner as it utilizes the walls to extend to its full length. I'm sure there are designs for smaller ones, specifically for a bass cabinet, that can be placed anywhere. Good luck, it should be an interesting build.
  7. alaskaleftybass

    alaskaleftybass Will Hanbury, Jr. In Memoriam

    Mar 21, 2012
    Sitka, Alaska
    Oh wow, I remember those Klipsch Khorns! Only got to hear one time, and it was thunderous.

    In the 70's and 80's a small company called Speakerlab manufactured a do-it-yourself kit with all the components for a Klipsch style cab. It was very popular.
  8. If I do carry out this project, what will change as far as tone goes? Will there be a noticeable difference in volume? I don't really care about either, I'm just doing this project to see if I can do it.
  9. Bump for more input
  10. Tone will change some, exactly how? Most likely a loss in highs and maybe some upper mids, lows will fall off below about 80 Hz IIRC. Volume change.....louder.
  11. rdcowan


    Aug 13, 2009
    Central Texas
  12. Exactly what I was expecting. I never turn my 63hz knob past 9 o'clock, so bass loss is not a problem.