Poll: Should I pair a 110 or 112 cab with my 110 combo?

Discussion in 'Amps and Cabs [BG]' started by fermata, Jun 4, 2018.

  1. a 110 extension cab

    6 vote(s)
  2. a 112 extension cab

    2 vote(s)
  1. fermata

    fermata Guest

    Nov 10, 2015
    I'm planning on getting an Eden EX-series extension cab for my Promethean P3110 (110 300W combo). The question is whether to get the EX110 or EX112.

    Are there downsides to pairing a 112 with a 110 combo that outweigh the extra volume the pair should deliver? Or is it better to play it safe and match the driver size in the extension cab to my combo, even if it moves less air?
    Last edited: Jun 5, 2018
  2. Stumbo

    Stumbo Guest

    Feb 11, 2008
    fermata likes this.
  3. fermata

    fermata Guest

    Nov 10, 2015
    A bump for more input. Thanks to the poll respondents so far.
  4. There are two questions here.

    1) Are larger drivers more sensitive than smaller drivers,?
    A simple review of TS frequency response graphs (the sound level between about 200 and 2000 Hz) will show that larger drivers are generally more sensitive than smaller drivers, but that there is a wide range of sensitivities in a given driver size and that there is considerable overlap, with for example some 10's being more sensitive than some 15's. So this must be taken on a case by case basis.

    2) will the combination of two drivers sound better when the two drivers are the same size?
    Examination of the same frequency response graphs shows that while there is a general trend of deeper bass for the larger drivers, and more extended highs for the smaller drivers, there is a great deal of scatter in driver frequency range (useful response from the lows to the highs), and, just as critically, in the overall shape of the frequency response (the distribution of peaks and dips). The latter greatly impacts the tone of the driver. And in this characteristic, the drivers are all over the place. This has more to do with things like cone composition, density and profile, surround geometry, composition and density, voice coil and former mass, composition dimensions, and dust cap profile, composition, density and size. So driver size has little to do with the tone of the driver through the mids and highs. Therefore, matching cab driver size is only the most rudimentary step to tone match.

    The bottom line: For matching cabs for greater volume or tone, driver size is at best a weak guide. To make any real progress in matching cabs for loudness or tone, it is essential to examine them on a case by case basis. For tone matches it is best to match identical cabs. In some cases cabs have been voiced/designed by the manufacturer to work together. For all other non-identical cabs it is best to audition them.
    DukeLeJeune and fermata like this.
  5. fermata

    fermata Guest

    Nov 10, 2015
    You've cut to the chase--I don't have a way to audition the two options, so I'm trying to figure this out on paper, so to speak. Not ideal, as you point out!

    I do have this much to go on: Other people have had success pairing the EX110 with the Promethean (the fact that both use coaxial speakers may help), so that appears to be the fail-safe option. But I'm curious about the EX112 because the consensus among folks who have tried both cabs is that the EX112 is richer-sounding. But that's on its own or in a pair, not combined with a 110 combo, so we're back to the try-before-I-buy dilemma...
  6. Then, for the safest match, go with the EX110. If you really would like a richer tone, get the EX112 from a dealer who will let you return it for any reason, and try it out. You could always lightly boost the bass with the two 110's.
    fermata likes this.