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Multi-Way Conventional loudspeakers with crossovers

Troels SBAcoustic 1st order design with xover schematic
Troels SBAcoustic 1st order design with xover schematic
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Old 27th March 2019, 08:07 PM   #1
andy2 is offline andy2  United States
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Default Troels SBAcoustic 1st order design with xover schematic

Hopefully this is not a repost.


He also makes the xover schematics available unlike most of his designs lately. He used to be anti-first order, but he's come around :-)

Fine-tuning the SBA-761 made me go through a wider range of my recordings than usual. Again 1st order filters throw a more truthful presentation and clearly demonstrates that phase shifts are one of the enemies of hi fidelity. The flute, the obo, the violin, etc., came with a vivid, yet smooth presentation without any harshness to the ear, something we've gotten so used to that we think this is the way things must sound. I'm not pointing fingers because there are a lot of good speakers out there that doesn't use 1st order filters - in fact most of them - and some of them sounds darn good. Every speaker is a compromise from design priorities.

Last edited by andy2; 27th March 2019 at 08:19 PM.
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Old 27th March 2019, 10:26 PM   #2
PeteMcK is offline PeteMcK
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have a look at the tweeter filter again....
Impedance varies with frequency, use impedance plots of your drivers and make crossover calculations using the actual impedance of the driver at the crossover frequency
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Old 27th March 2019, 10:28 PM   #3
LineSource is offline LineSource  United States
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"The construction here is the first of two SBA speakers designed for the DIY section of the new SBA website."

Troels stamp of approval on the SBA-761 is a statement that the SB_Acoustics Satori grade drivers are SO wide band and SO natural sounding that you can even use a simple crossover and achieve impressive sound from "good but not great" measurements.

A DSP company should to go a trade show using these same Satori drivers in a full 3-way 3-amp DSP with a flat SPL .... next to a small tube amp driving Troels SBA-761.
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Old 17th May 2019, 12:44 AM   #4
oglethorpescolony is offline oglethorpescolony  United States
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Would anyone care to guess or generalize as to how these would compare to his 3 way classics. I ran a pair for a few years and recently sent them to my dads where they are hanging on the wall with the ports closed off.
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