Let's say an audiophile likes his stereo system, but he feels there is a dip in frequency response between 5 kHz and 8 kHz that he would like to ameliorate. His speakers are small to moderate-sized, full-range floor-standing speakers. He's always been fascinated by plasma tweeters.
He buys a pair of Lansche floor-standers of similar height to his existing speakers. He positions them on the outside of his existing speakers.
He connects them to the same brand and model of amplifier he is using for his existing speakers. (Let's assume his existing speakers and the Lansche speakers have the same sensitivity.) He puts in attenuators in front of the input to his amplifier so he can adjust the volume of the standalone Lansche system.
His goal is to have the Lansche system reproduce mainly the 5 kHz to 8 kHz frequency range. He buys a Marchand cross-over box. He sets the cross-over to 24dB slopes, plugs in a 5 kHz high pass filter and an 8 kHz low pass filter.
Our intrepid audiophile has now layered into his existing system a completely new loudspeaker system. He plays a bit with the cross-over frequency on the Marchand and adjusts the volume of the Lansche system using the attenuators in front of the amps driving the Lansches.
Sitting in his listening chair he feels he has successfully raised the prominence in his system of the 5 kHz to 8 kHz frequency range.
What could be wrong with this approach?
A sense of incoherent drivers between the original loudspeakers and the Lansches?
Phase anomalies resulting from having two different drivers (the tweeters in his original speakers and the plasma tweeters in the Lansches) reproduce the same exact frequency range?
What else?
He buys a pair of Lansche floor-standers of similar height to his existing speakers. He positions them on the outside of his existing speakers.
He connects them to the same brand and model of amplifier he is using for his existing speakers. (Let's assume his existing speakers and the Lansche speakers have the same sensitivity.) He puts in attenuators in front of the input to his amplifier so he can adjust the volume of the standalone Lansche system.
His goal is to have the Lansche system reproduce mainly the 5 kHz to 8 kHz frequency range. He buys a Marchand cross-over box. He sets the cross-over to 24dB slopes, plugs in a 5 kHz high pass filter and an 8 kHz low pass filter.
Our intrepid audiophile has now layered into his existing system a completely new loudspeaker system. He plays a bit with the cross-over frequency on the Marchand and adjusts the volume of the Lansche system using the attenuators in front of the amps driving the Lansches.
Sitting in his listening chair he feels he has successfully raised the prominence in his system of the 5 kHz to 8 kHz frequency range.
What could be wrong with this approach?
A sense of incoherent drivers between the original loudspeakers and the Lansches?
Phase anomalies resulting from having two different drivers (the tweeters in his original speakers and the plasma tweeters in the Lansches) reproduce the same exact frequency range?
What else?
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