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2x15 vs. 8x10

Discussion in 'Amps and Cabs [BG]' started by fatrhino, Jul 24, 2000.

  1. fatrhino


    Jan 2, 2000
    I just bought a Mesa-Boogie 2x15. I love 15's for some reason. Anyway, my band went in to the recording studio the other day and there was a Mesa-Boogie 400+ with a ampeg 8x10. Ohhhhh man. I almost wet myself. Well my 2x15 hasn't came yet and I was wondering if 2x15's push as much air as a 8x10. I heard more speakers more volume so would my 2x15 sound considerably less powerful than that 8x10 was? Oh and I need a head so what would you recogmend used or new to power my 2x15 with Aprox. $600 - $700? No all tube 90lbs heads.
  2. danhei


    Jan 21, 2000
    The 2x15's will also be plenty loud. But it's not quite as simple as more speakers equal more volume. It also has to do with the types of speakers and the effeciency. I have a 4x10 and a 1x15 and they are both about the same loudness. But when using both together, they are much louder than either by themself for two reasons: 1) the amp puts more power into the two cabs (2 ohms) than either cab alone (4 ohms). 2) 4 10's and 1 15 adds up to alot of air moving!

    I wouldn't worry too much about 2 15's vs. 8 10's unless you happen to like the sound of 10's better than 15's.


    PS I drive my cabinets with a Peavey Firebass 700. 700 watts at 2 ohms, 475 at 4. Sounds great. The amp lists for $700 but you should only pay $550 to $620 or so. Don't pay list price! You'll probably have to bargain if it's a place like Guitar Center.
  3. An 8x10 is 80" 0f speaker. A 2X15 is 30" of speaker. The 8X10 will dispurse the sound more efficiently. The impedence will make a diference on the amount of wattage output from the head (4 ohms will put out more than 8 ohms). If all being equal, the 8x10 will win. 10" speakers have a quicker response than 15" speaker plus they usually have a tweater so you can get more brilliance than the 15" If you're looking for lots of bottom end and like it a bit muddy sounding, the 15's will do their job to the fullest.
  4. BTW, an Eden WT-300 should run about $700. You'll REALLY like the tone of this amp along with it's powerful EQ system!
  5. Munjibunga

    Munjibunga Total Hyper-Elite Member Gold Supporting Member

    May 6, 2000
    San Diego (when not at Groom Lake)
    Independent Contractor to Bass San Diego
    Actually, a 2x15 is 353 square inches of speaker, and an 8x10 is 628 square inches of speaker. So you're getting slightly less than double the speaker area with the 8x10.
    bobyoung53, yodedude2 and punchclock like this.
  6. I didn't think of the speaker sizes in square inches. Thanks for the correct analogy!
    ezstep and yodedude2 like this.
  7. embellisher

    embellisher Holy Ghost filled Bass Player Supporting Member

    Buster Brown and Thegrandwazoo like this.
  8. lol.. square inches means he got the area of the speakers. and as you most likely learned in math, when you get the area, you have to have it squared =)

    <BLOCKQUOTE><font size="1" face="Verdana, Arial">quote:</font><HR>Originally posted by embellisher:
    My speakers are round.. does that mean that I should consider them in 'round' inches?


  9. jazzbass_5


    Sep 1, 2007
    NY, Albion
    10 x 3.14 = 31.4 square inches of surface area per 10" speaker. (Approximately). 15 x 3.14 = 48.1 square inches of surface area for a 15.
    8 x 31.4 = 251 square inches for an 8x10s
    2 x 48.1 = 96.2 square inches for 2x15s.
    Then you have to take into account that the are 8 voice coils driving 8x10s, less mass, more punch. Only 2 for the 2x15s. Just some math and facts and stuff.. hehe.
  10. BadExample


    Jan 21, 2016
    That is of course the approx. area of the hole size.

    D800 or D800 + would probably float your 2x15 boat!
  11. chadds


    Mar 18, 2000
    Not accurate. But I see the math was covered. Tone is dependent on speaker efficiency and cab design. Can't judge sound by speaker diameter.
    Ultimately it's which head with which cab floats his musical boat.
    Last edited: May 18, 2017
    punchclock and joel406 like this.
  12. kpc


    Apr 6, 2011
    I believe the 810 has more speaker area.
    A single 15 is a little more then 2 tens as far as I know.
  13. LeftyD

    LeftyD Supporting Member

    Feb 22, 2017
    Las Vegas
    The original post was July,2000. The OP has not been seen since July,2003.
    Last edited: May 18, 2017
    bobyoung53 and Rattman like this.
  14. BogeyBass


    Sep 14, 2010
    I wonder if servers complain lol, 2000? that is like waaay back on the hardrive. Do i really have to read back that far...goshh. what the heck is a 8x10 we talking about picture frames or something.
  15. From my experience you need 2x10's = 1x15's roughly speaking so, you'd need 4x15's to compete with 8x10's. There is a lot more to the equation than driver size, of course. You have to look at the cabinet design (ported or sealed), coil size and magnet weight and type. I personally am stuck on the sound of my vintage 15" EVMb's in my very vintage Sunn Sorado cabinet. I've played this cabinet with several different heads including a Sunn 200S, a Peavey, a Crate, and now an Ampeg PF500. I think it sounds best with the pf500.
  16. chadds


    Mar 18, 2000
    Feels goofy to realize we are answering a question from awhile ago. But hey the time spent building and testing this time machine negates any embarrassment.
    BadExample and Rattman like this.
  17. Not sure the answer is still in any way relavant to the OP
    but the Mesa probably has EVs in it that are more sensitive than the 10s.
    Sensituve speakers can go a long way in stretch available watts.
    BadExample likes this.
  18. jazzbass_5


    Sep 1, 2007
    NY, Albion
    Well then...
  19. ahc


    Jul 31, 2009
    No. Virginia
    A speaker's excursion (xmax) makes a difference too. Speakers ain't flat and they move.

    Oh, and They're Back...

    yodedude2 and BadExample like this.
  20. You can tell the thread was from 2000, there was a mention of mixed drivers and then silence on the subject.

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