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Nederlands Forum over Oude Radio's |
Re: 3-weg filter Luidsprekerbox AD10100-5060-0160
Geschreven door anton tan op 15. Jun 2006 10:51:57:
In reactie op: Re: 3-weg filter Luidsprekerbox AD10100-5060-0160 geschreven door Thomas op 15. Jun 2006 01:18:27:
What the hell is this??
An active or passive filter gives exact the same frequency and phase response at a given filter order. The advantage of an active filter is that one can design a higher order filter without coils and te design is much simpler for higher order filters. There is also a disadvantage of active filters and that is because you have to use seperate Power amplifiers for each frequency range. Philips has done this with their MFB active loudspeaker boxes.
In general people dislike to use different power amplifier for each frequency range because they have one good amplifier which is in use and they only want to connects it to a louspeaker only. That is also the reason why the MFB philips boxes were not an succes. People wants to hav ethe opportunity to choose their amplifier by their own.The mentioned Philips loudspeaker kit is an excelent midclass set. No more and no less. The woofer is to large giving much mebram distortions during high output operation which is heard as a kind of amplitude dependent noise.
Regards.