Crossover with different slopes lowpass and highpass.

[Musician]

If I could wish - I would like switchable lowpass and highpass crossover between 36 dB butterworth, 24 linkwitz riley, 18dB butterworth, 12 dB butterworth, 12 dB linkwitz . I also wish that lowpass and highpass crossover could have different slopes to combine , so a closed box main speaker can be crossed 12dB/oct high pass ( making it a acoustical 24 dB/oct ) and combined with 24dB/oct low pass for the subwoofers. This would sum be a correct 24/24 dB acoustical crossover LP and HP, - if one uses closed box main speakers. This is called a THX crossover as you all know, and all THX AVR:s have this option.

Best integration for two channel music would infact be 30dB/oct low pass combined with 18dB/oct high pass for closed mains - so I would want that option to. A 30/30dB acoustical slope crossover. This gives even better power response in the room than the THX crossover. Not many manufacturers know this.

No streamer on earth has those options, and if the ultra would have this, it would be a sensation.

 

[harkpabst]

Your figures assume that the high pass filter is always aligned with the "natural" roll-off of the main speakers.

The biggest advantage of a bass management that controls both, the low pass for the sub and the high pass for the mains is that we no longer have to chase after this arrangement. Instead we can use a high crossover frequency, which in most cases is beneficial, as long as the slope is high enough.

The in-room response of a speaker is hardly ever the same as theory or anechoic measurements may suggest. The lower corner frequency will be lower in-room and there won't be a nice and smooth 12 dB/Oct slope for closed speakers.

Havin said that, there's nothing wrong with having full control over independent crossover frequencies and filter slopes, once everything else is sorted.

A 30/30dB acoustical slope crossover. This gives even better power response in the room than the THX crossover. Not many manufacturers know this.

It's not only manufacturers who don't know this. I'm sure you're more than prepared to link to some sources.

 

[Smartplug]

If I could wish - I would like switchable lowpass and highpass crossover between 36 dB butterworth, 24 linkwitz riley, 18dB butterworth, 12 dB butterworth, 12 dB linkwitz . I also wish that lowpass and highpass crossover could have different slopes to combine , so a closed box main speaker can be crossed 12dB/oct high pass ( making it a acoustical 24 dB/oct ) and combined with 24dB/oct low pass for the subwoofers. This would sum be a correct 24/24 dB acoustical crossover LP and HP, - if one uses closed box main speakers. This is called a THX crossover as you all know, and all THX AVR:s have this option.

Best integration for two channel music would infact be 30dB/oct low pass combined with 18dB/oct high pass for closed mains - so I would want that option to. A 30/30dB acoustical slope crossover. This gives even better power response in the room than the THX crossover. Not many manufacturers know this.

No streamer on earth has those options, and if the ultra would have this, it would be a sensation.

That was the feature I always wanted to have. I had mini dsp and the amount of customization was incredible. The integration between main and sub was top class. Now, if wiim can make such feature similar to mini dsp it would be ground breaking feature.