Hello
I need some help...i want to build an active 3way LR24 crossover and when i sum the outputs i have this phase issue (photo attached)...the schematic is this :
Linkwitz-Riley Electronic Crossover
How to solve this ?
I need some help...i want to build an active 3way LR24 crossover and when i sum the outputs i have this phase issue (photo attached)...the schematic is this :
Linkwitz-Riley Electronic Crossover
How to solve this ?
Attachments
LR2 has a 2pole filter with a Q of 0.5
LR4 has two 2 pole filters each with a Q of sqrt(2)/2 (=0.7071) equals Butterworth filters.
The Butterworth filter has 90° of phase change at the crossover frequency, so two B2 have 180° of phase change at the crossover frequency.
Both have -6dB at the crossover frequency.
LR6 and LR8 are built.
Do you really have an LR24?
LR4 has two 2 pole filters each with a Q of sqrt(2)/2 (=0.7071) equals Butterworth filters.
The Butterworth filter has 90° of phase change at the crossover frequency, so two B2 have 180° of phase change at the crossover frequency.
Both have -6dB at the crossover frequency.
LR6 and LR8 are built.
Do you really have an LR24?
No; you'll find the relevant maths in discussion of minimum phase systems. Most things in audio, including Linkwitz-Riley alignments, exhibit minimum phase behaviour.
LR4's are excellent.
I designed one for my own use.
It balances between the high pass and low pass very well.
I designed one for my own use.
It balances between the high pass and low pass very well.
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