|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
108.5.225.95
In Reply to: RE: Revel F52`s and Horizontal Bi-Amping posted by s-a-k on September 13, 2016 at 12:17:18
I would use the passive crossovers for biamping. Crossovers in well designed speakers do more than just act as crossovers. They equalize small problems in the driver responses and these corrections are specific to each speaker design. An electronic crossover is generic and isn't designed to do this compensation in many cases. If you're lucky and the electronic crossover is adjustable for crossover point and slope you may be OK but you would have to test it first.
This doesn't mean electronic crossovers don't work. They do very well but they must be designed for each speaker just like a good passive crossover to do the same compensations.
Follow Ups:
Some of those complexities are dependent on the variable impedance of the drivers and are eliminated when going to a line-level crossover. The speaker impedance becomes irrelevant as the amplifier presents a constant impedance to the crossover.
Other advantages include 1) protecting the tweeter from clipping as it is isolated from the power draw of the woofer; 2) There is better bass control as the DCR (power loss) from the LP inductors is eliminated 3) The efffective delivery of watts to the drivers is quadrupled not doubled - that is two 100 WPC stereo amps act like a 400 WPC amp not a 200; 4) Finally, separating the signals before amplification reduces IM resulting in a cleaner and more resolved sound.
All this is achieved at a cost -- proper line-level biamping requires a lot of thought and attention so that the crossover closely simulates the OEM XO with regards to order, frequency and slope.
I married the perfect woman. The downside is everything that goes wrong is my fault.
Edits: 09/15/16
I agree with all your points. I am an advocate of active crossovers. But what I said still stands. Modern crossover compensate for driver problems and a generic active crossover may not work. Plus most of us would be tuning the crossover by ear and then you will get what sounds good but that may not be maximum fidelity. Otherwise passive crossovers would be easy to design. We'd just look up simple formulas in books.
Note I did say to try it and the best way is to do one active and try to make it 'sound' like the other speaker. It may or may not work.
Post a Followup:
FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
This post is made possible by the generous support of people like you and our sponsors: