07-10-2016, 10:23 AM
If the crossover is missing, it's because someone has taken it out.
Some people believe that crossovers can be affected by vibration inside a loudspeaker cabinet, and report incredible subjective advantages to mounting the unit externally. It's fairly common in "hi-fi land".
Alternatively, someone might have designed a low-level crossover that sits between the preamp and a pair of stereo amplifiers. Such an arrangement would be called "active", rather than bi-amping.
Bi-amping retains the existing crossover, but uses a pair of (hopefully!) identical amplifiers, both of which carry the whole audio spectrum in voltage terms, but only deliver current at the frequencies demanded by the drive unit and crossover combination. Really, it should be called "buy-amp", because that's the overall effect. Exactly like "buy-wiring". Manufacturers are incredibly good at finding new ways to sell stuff...
Some people believe that crossovers can be affected by vibration inside a loudspeaker cabinet, and report incredible subjective advantages to mounting the unit externally. It's fairly common in "hi-fi land".
Alternatively, someone might have designed a low-level crossover that sits between the preamp and a pair of stereo amplifiers. Such an arrangement would be called "active", rather than bi-amping.
Bi-amping retains the existing crossover, but uses a pair of (hopefully!) identical amplifiers, both of which carry the whole audio spectrum in voltage terms, but only deliver current at the frequencies demanded by the drive unit and crossover combination. Really, it should be called "buy-amp", because that's the overall effect. Exactly like "buy-wiring". Manufacturers are incredibly good at finding new ways to sell stuff...
