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10 vs 15 vs 12: Does bass speaker size matter?

Ampeg currently have four 15 cabs in their line up, each one sounds, and performs different.
MarkBass also have a few different 15's, they sound different from others in their line, as well as from the Ampegs mentioned above.

Then throw in an SWR 15, the GK Neo 15, a Mesa Subway 15 and a Peavey Black Widow 15 and we got all kinds of different 15 sounds and performances.

Which one is the "true" 15? :help:
Obviously, Ampeg... They are all the true 15s, just like brothers are all different, but still brothers. :D

J/K, keep your tomatoes. ;)
 
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Loved sealed 8x10".
Highly like a good 15"
Used 4x10" too long to oppose their practical performance but.......
Settled for sealed 4x12" as the best alround with deep lows, clear highs and mids to punch the back wall when you are playing. Also generates the highest number in bass players coming for a closer look and asking questions. Never had another combination do that.
 
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When comparing basses, strings, amps and cabinets, I think only so much can be quantified. Most of my satisfaction has more to do with the response, how expressive I can play, and how much continuous inspiration is generated. If a particular brand cabinet & speaker size is one element (molecule) that drives you, it has a little less than what shows up on a spectrum analyzer, and more to do with how connected you are. The audience will notice that difference.
 
speaker choice today is far different than when I first started playing bass in the 1970s. Back then for all practical purposes 15s were the primary choice (other than the Ampeg 810 that few could afford or were able to transport), and speaker cab design was relatively unsophisticated.

Over the past decade or so as speaker design has gotten more sophisticated, I’ve owned and used pretty much the whole gamut - 15s, 12s, 10s, even a 2x8 cab that punched way above its weight class and size. I’ve landed on 12s (I have two 112 cabs made by RevSound, each weighs 21 lbs) as striking the best balance for me of cab weight and performance (tone and volume). The reality is that any of the above speaker sizes, in a properly designed cabinet, could easily do what I need. So my conclusion after all these years is that the answer to the OP’s question is that it does not matter.
 
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