No, using multiple woofers is not the culprit. Poor design skills, using too small of a cabinet for the given drivers and not enough internal damping material inside the cabinets themselves are the culprits. Larger cabinets produce resonance at a lower frequency, hence offering more linear bass extension. Poor tuning of the ports / improper bass alignment is what produces the single huge peak. The very wide bass plateau's are caused by not using enough damping material inside the cabinet. Just further evidence that too many "manufacturers" are using "computer software" to design their products. They do this because they don't really know how to build & design a speaker on their own, let alone tweak the results that the computer program itself provided.
As a side note, most people think that vented designs should use physically smaller cabinets than sealed designs. That is exactly the opposite of the truth in most cases. The general public has been lead to believe this because many companies use vents in very small speakers. This was not to give more bass extension so much as it was to "fool you" into thinking the speaker had better bass. What they did is give you more apparent bass with higher sensitivity i.e. quantity over quality. The whole reason that Edgar Villchur and Henry Kloss designed the acoustic suspension speaker was that it offered the best bass response characteristics that one could achieve in a smaller box.
At the time that they were designing the Acoustic Suspension speaker, other designs used some type of vent or open baffle and the cabinet had to be HUGE to get any kind of deep bass out of it. Not only do acoustic suspension speakers provide better transient response, they also offer a slower roll-off below the point of resonance. As such, a vented design that resonates at 45 Hz will be -24 dB down at 22.5 Hz ( one octave ). A sealed design that resonates at 50 Hz ( vents always look more impressive on paper ) is only -12 dB down at 25 Hz. You tell me which speaker has better extension in the real world. Then factor in transient response, which sealed speakers do better. Now ask yourself why a manufacturer would want to use a vent and you'll figure it out soon enough. They are cheaper to build, cheaper to ship, offer more apparent bass and take less power to pressurize the room. The bottom line is more profit, more bass, more sales.
With such a situation, how can they lose? There is only one way that they could. So long as they keep the consumer in the dark and hope that they never become educated or learn how and what to listen for, they'll keep racking up sales by pushing garbage out the door. High profit garbage at that. Sean
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As a side note, most people think that vented designs should use physically smaller cabinets than sealed designs. That is exactly the opposite of the truth in most cases. The general public has been lead to believe this because many companies use vents in very small speakers. This was not to give more bass extension so much as it was to "fool you" into thinking the speaker had better bass. What they did is give you more apparent bass with higher sensitivity i.e. quantity over quality. The whole reason that Edgar Villchur and Henry Kloss designed the acoustic suspension speaker was that it offered the best bass response characteristics that one could achieve in a smaller box.
At the time that they were designing the Acoustic Suspension speaker, other designs used some type of vent or open baffle and the cabinet had to be HUGE to get any kind of deep bass out of it. Not only do acoustic suspension speakers provide better transient response, they also offer a slower roll-off below the point of resonance. As such, a vented design that resonates at 45 Hz will be -24 dB down at 22.5 Hz ( one octave ). A sealed design that resonates at 50 Hz ( vents always look more impressive on paper ) is only -12 dB down at 25 Hz. You tell me which speaker has better extension in the real world. Then factor in transient response, which sealed speakers do better. Now ask yourself why a manufacturer would want to use a vent and you'll figure it out soon enough. They are cheaper to build, cheaper to ship, offer more apparent bass and take less power to pressurize the room. The bottom line is more profit, more bass, more sales.
With such a situation, how can they lose? There is only one way that they could. So long as they keep the consumer in the dark and hope that they never become educated or learn how and what to listen for, they'll keep racking up sales by pushing garbage out the door. High profit garbage at that. Sean
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