Now there 18g50 and others I have not had to test it as I was seduced by the care of his joining the seriousness of his double spider and the assurance that it releases the ds first sight. I think the bowl aluminum alloy. I open the edifice on Sunday for preliminary tests I give them an account crest audio bridge with active filter Hz to the stroller parking. I tried eminence; Proel; Eighteensound, and a local hp nomex the results are not exactly like those one admires hire more experienced than me.
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Anytime I model above the mid 40s I get a hump and a steep roll off. Click to expand A smallish hump above Hz is often misunderstood as a "not wanted" characteristic that might cause sound anomalies. Every cabinet acts as a bandpass filter so its mathematically not possible to get a perfectly flat line response at the low mids response.
Try to imagine an parametric EQ and if a little hump little boost caused by some EQ adjustment actually could cause booming. Different group delay may cause issues with different cabs but group delay is not and never suitable to cause a "slower" sound for a single cab.
At the other hand side group delay may tell something about about the cab filter characteristic alignment. The higher the number the stronger the motor. The motors strength is representated by B magnetic flux density. While wire length L belongs to the VC which is not directly a part of the motor structure. Agian you have to take the moving mass into account, but for the most part it should be a good indicator. Here are a few numbers for comparison. Eminence Deltalite II Lowish Mms does improve efficience, less wire length l can be compensated by larger flux desnsity B for same F t.
As you can see, the beyma has a more powerful motor structure yet. I love the tight controlled bottom of sealed cabs, but look for a bit bigger and warmer sound. So, the goal hear is to split the difference. But its possible to adjust cab design for a bit "bigger and warmer" sound just with cab tuning.
Best Full range 15" driver - Beyma 15WR400 2x15