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@thespeakerdude 

Wise comments about purity.  It is absolutely true that not everyone prefers the active version of a well executed design.  I sometimes wonder if posting in favor of active makes people think there is no alternative.  I've done this demo, this comparison, I've demo'd active vs passive (ATC SCM40) of the same speaker using the same amplifiers right next to each other in the same room.  Despite the audibly clear advantage of the active to me, some still picked passive (without knowing which was which).  I have noticed how seating position can impact this choice, so a great observation that crossover differences can lead to room differences that may be part of the listener's choice.

There is no such thing as a pure chain, there are tradeoffs. I never said passive was better than active, what I said was I didn't like the sound of the powered speakers that I have heard. I do like active systems that I can pick the amplifiers and not be stuck with what comes with the speaker. 

@invalid, how do you measure purity? No driver is a perfect radiator, so they are not pure. Electronics can be, for any reasonable measure, pure. I see active speakers as the melding of electronics which can be pure, with drivers that are not, such that the combination exceeds the two combined independently.

This is only controversial at the consumer end. At the development end, for those working on active speakers, there is no controversy that an active speaker is better able to achieve measurements of purity. We define purity as reduced distortion, flatter response, better dispersion.

@invalid 

One on the BIG tradeoffs is budget. If I have $$$ to invest in a speaker/amp/cable chain I think active will be preferable on a value for SQ basis.

Another BIG tradeoff is convenience and a one box solution is very convenient (although you do need additional outlets).

Another BIG tradeoff is risk. When I get an active speaker I know what it will sound like. When I get a passive speaker I have to risk picking an amp and amps can get expensive then I have to risk getting a good speaker cable (if you believe those matter).

So now all amplifiers sound the same.