Originally Posted by astrallite
Isn't that a contradictory statement? If the amps are isolated it would be 1 amp per speaker, all the amps together would mean they are not isolated
Separating amps for each speakers is better as they drive less electrical noise. When you have one big amplifier in the passive system there will be more electrical noise. Not to mention, the heat will increase further. It will also infect the rest of the circuit system with noise that includes onboard DAC in the receiver. Actually they infect each other. It's a noise city. With the Active, you have separate amps you can connect the power cable to outlet farther away from the other amp. The larger the amp, and the more power draw in the amplifier to support multiple channels, the more noise they will be infested with.
Active speakers do have higher noise level than passive speakers though. There is considerable DSP noise from using active crossovers, there's no way around it. Even super high end $10,000 DEQX active crossovers will have far higher noise level than $100 passive home theater speakers. This is a well-known, measurable, and reviewed issue with active crossovers.
I don't have noise issue. Are you referring to hiss / hum issues with the active speakers? That depends on the quality, design of the speaker system and your audio interconnects. Active systems can definitely suffer from electrical noise and RFI/EMI just like the Passives do, but they are less affected with the Active system because they produce less noise. The best way to eliminate hiss / hum is to get better interconnects. It worked for me.
In the end, with Active system you get the most naked (transparent) sound, with more details. With cable upgrade the sound improves even much greater. You can get improvement with the Passive's too with such upgrade, but not as good as the Active.
You don't need $10k active speakers to get better sound, the cheaper ones will do fine. Just gotta get the right ones and that synergize with the rest of your system.
cheezcakeEdited by CheezCake - 1/10/14 at 10:21am