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The Highly Coveted Acoustic Folded Horn Stack Is Available

Discussion in 'Amps and Cabs [BG]' started by Gibenbackerbass, May 8, 2010.


  1. hdracer

    hdracer

    Feb 15, 2009
    Elk River, MN.
    Is that the right link?
     
  2. billfitzmaurice

    billfitzmaurice Commercial User

    Sep 15, 2004
    New Hampshire
    Owner, Bill Fitzmaurice Loudspeaker Design
  3. BillyB_from_LZ

    BillyB_from_LZ Supporting Member

    Sep 7, 2000
    Chicago
    A TalkBass friend with a better ear than mine has played through one and said that its output is mainly "fake" bass i.e. lots in the 80 Hz region but not much below.
     
  4. Bassamatic

    Bassamatic keepin' the beat since the 60's Supporting Member

    This is just styled to look like the old folded horn cab. In those cabs, the speaker faced backwards, BTW, into the horn. However, due to the size of this cab and that it has a single 10", it could have some good sound.
     
  5. grifff

    grifff

    Jan 5, 2009
    Towson, Maryland
    +1
     
  6. MEKer

    MEKer Supporting member

    May 30, 2006
    OP---what made you think it was a folded horn? It's not, as Bill quickly pointed out.

    BTW, Bill F---I have read a few times that folded horns have long been considered obsolete and inefficient. Why exactly is that?

    I VERY fondly remember my pair of large GK folded horn cabs (each driven by a Crown 500w amp) in the late 70's and they WERE beasts. Man, I wish I still had them although they might break my back now.
     
  7. Jaco who?

    Jaco who?

    May 20, 2008
    The big enormous smiley suggests humor.
     
  8. Mr. Foxen

    Mr. Foxen Commercial User

    Jul 24, 2009
    Bristol, UK
    Amp tinkerer at Ampstack
    Bill sells plans for folded horns, and they are madly efficient, just not above 150hz or so, so they are pretty bad for playing bass through. More for PA applications.
     
  9. Munjibunga

    Munjibunga Retired Member

    May 6, 2000
    San Diego (when not at Groom Lake)
    Independent Contractor to Bass San Diego
    I like the way the picture makes it look as big as an 810. The thing's about a foot wide and two feet high.
     
  10. seamonkey

    seamonkey

    Aug 6, 2004
    Dime store amp.

    I wouldn't mind seeing some new folded horn subwoofers made but MDF will never be light.
    Still need a decent top for mids.
     
  11. billfitzmaurice

    billfitzmaurice Commercial User

    Sep 15, 2004
    New Hampshire
    Owner, Bill Fitzmaurice Loudspeaker Design
    You're reading the wrong sources.
    Both the DR250 and DR280 run lower than the average commercial bass cabs, and they're tops, not subs.
     
  12. I played that one at GC with my SR500 - and although it was OK - just barely OK - it was what it is - a mini of sorts and I don't really like mini-anything. I don't think it's the flea-weight Wattage - just a single 10 in a 2.125' tall cab that makes it hurt for the Lows, as it can really pin your ears in the Highs - but it ain't thump-y enough or me.

    I'd call it a mid/tweeter-in-a-taller-than-normal-box if I was pressed to quantify it.

    My opinion, of course - but I'm the guy who added a .1uF cap over the OE cap on my S/P too. I LIKE DEEP.

    .
     
  13. rbonner

    rbonner

    Sep 25, 2008
    There should be a special section under TB/amps for reviewing garbage.

    BOB
     
  14. I call that a cheap shot. The unit is what it is, and it will appeal to bedroom and cellar players, and might even find it's way into a small, very small gig.

    But to paint with that big brush is unfair and not called for.

    It's small and not very low-down, but it is an entry level unit that has some merit, even if it's not a refrigerator or $20K tied up in things that aren't necessary for two guys in their garage on a Sunday morning - when they SHOULD be in church.
     
  15. Bassmec

    Bassmec

    May 9, 2008
    Ipswich UK
    Proprietor Springvale Studios
    These old Jaco Pastorious 408's were the best cab they made, the old 301 Cab/vega 18's where ok but they never had the real low end or thud of the quasi Isobaric 4 X 15 design:
    [​IMG]
    My hybrid active rig is a Mesa Studio pre into Jbl 260 dsc into carver
    PM600 power amp for the JBL 2380/2445 horns (in at 1.2 Khz)
    and then a Carlesbro Pro 3000H split 1 channel to the 4 ohm 2X12 (JBL 2206 drivers) and then channel 2 a full 1500 watts RMS into the 2 ohm 408 cab crossed in at 23Hz and out at 125hz.
    Now thats a real Acoustic 408 beast Rig! albeit with a bit of driver help now from 4 Jbl 2226 drivers.:eek:
    Don't ask how much it weighs, you can easily hear just how heavy it is.:bassist:
     
  16. hdracer

    hdracer

    Feb 15, 2009
    Elk River, MN.
    Oh come on, I was only 3 sips into my morning coffee. My sense of humor doesn't kick in on Saturday mornings until after at least my second cup.
     
  17. It's mid afternoon and my sense of humor hasn't even kicked in yet.:rolleyes:
     
  18. craig.p

    craig.p

    Sep 28, 2008
    New Hampshire
    > I have read a few times that folded horns have long been considered
    > obsolete and inefficient

    They're obsolete only on jobs where your bass is running through the mains. In situations like that, a FH on stage is actually counterproductive and asking for trouble. On mid-sized jobs where your bass is NOT running through the mains but the room is still large enough to accommodate (or justify) a FH's throw, there's nothing sweeter because you don't have to hammer the stage with volume to reach the back of the room with clarity and definition.

    As for efficiency, there are two parts to this. The first part is cab efficiency. I know of no other cab architecture with a higher efficiency, everything else being equal. Bill F will correct me if I'm wrong there. The second part is what I'll call "implementation efficiency" which I'll define as the amount of equipment needed per hundred paying customers: there's less haul-in required with FH cabs than with non-FH cabs. Haul-in concerns show up on the mid-sized jobs where you don't run through the mains; the smaller jobs don't require FH-class reach and the larger jobs require (or rather demand) minimal if any, because the mains are doing the work for you.
     
  19. billfitzmaurice

    billfitzmaurice Commercial User

    Sep 15, 2004
    New Hampshire
    Owner, Bill Fitzmaurice Loudspeaker Design
    What's obsolete are folded horns of the Acoustic 360/Ampeg V4B mold. They're obsolete because they were huge, they were huge because they used eighteens or dual fifteens, they used those drivers because the driver technology of the 1960s-1970s made it a necessity. And they're obsolete because they had poor response into the mids, the result of their folding geometry.

    Modern midbass folded horns are half the size of those old behemoths, because modern driver technology allows them to use single tens or twelves, and with the right geometry they have no problems in the mids. But no manufacturer makes modern configuration folded horns for bass, because the labor cost to build them is at least four times that of simple boxes. Even though a 1x10 folded horn can outperform a traditional 4x10 of the same size it's still cheaper for a manufacturer to build the 4x10.
     

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