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Re: Definimax 4012HO - End of Life [message #90851 is a reply to message #90415] Sun, 08 September 2019 17:55 Go to previous messageGo to previous message
Wayne Parham is currently offline  Wayne Parham
Messages: 18791
Registered: January 2001
Illuminati (33rd Degree)

I've measured the 12PLB100 driver and it works well too. Same deal: It needs the same crossover components as the Definimax 4012HO and the Delta Pro 12. Response from any of those three is similar, with vertical nulls in the same locations.

I'll be adding the Delta Pro 12 and the B&C 12PLB100 drivers as options in the next few days, as well as modifying the schematic to include those drivers in the notes.

Here are the distortion measurements, taken with an 8.9v (10 watt) drive signal:

Fundamental	2nd	3rd	4th	5th	6th

		     B&C 12PLB100
100Hz		0.50%	0.72%	0.25%	0.04%	0.02%
200Hz		0.78%	0.51%	0.12%	0.02%	0.01%
400Hz		0.79%	0.45%	0.07%	0.01%	0.01%

	      Eminence Definimax 4012HO
100Hz		0.95%	0.77%	0.34%	0.03%	0.05%
200Hz		0.82%	0.67%	0.32%	0.04%	0.03%
400Hz		0.75%	0.53%	0.26%	0.03%	0.02%

	        Eminence Delta Pro 12
100Hz		2.12%	2.23%	1.63%	0.44%	0.16%
200Hz		2.37%	2.56%	1.33%	0.31%	0.18%
400Hz		2.54%	2.34%	1.12%	0.38%	0.14%
 
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