In Reply to: Practical limitations of EQ posted by tomservo on July 5, 2006 at 08:24:55:
Passive loudspeaker crossover networks being frequency selective circuits by intent are also equalizers and any criticism you can level at active equalizers is also true for crossover networks. But crossover networks have many more drawbacks including the inability to easily adjust their operating parameters, their change in their effect as power levels increases and speaker resistance goes up with temperature (especially for tweeters) their cost, their expense, and they are usually burried inside speaker cabinets where they can't even be serviced easily. (the only way to service early model KLH6s is to remove the woofer cone first and recone it later, pry the baffle board out with a crowbar and hope you don't break it, or saw the cabinet open and figure out later how to get it back together again and reseal it.) To handle large signals they often need expensive large inductors and large capacitors, they can have adverse and unpredictable interactions with the output stages of some amplifiers. In short, given the drastic reduction in price of active equalizers, active crossover networks, and power amplifiers, it is hard to see why passive crossover networks are even still around. But then so are vacuum tubes, phonograph records, class A designs, and a lot of other anachronisms from earlier eras.
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Follow Ups
- Crossover networks are equalizers too and by comparison they are awful - Soundmind 06:24:48 07/07/06 (2)
- 'Awful' passive crossovers - thoriated 10:38:48 07/07/06 (1)
- Re: 'Awful' passive crossovers - Soundmind 11:05:28 07/07/06 (0)