Spatial Audio M4 Triode loudspeakers

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Manolo

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  • Consulting Structural Engineer
Spatial Audio M4 Triode loudspeakers
« on: 22 Dec 2025, 10:08 pm »
Greetings:
i have had these speakers since their inception and very happy with their sound qualities. Very musical! What I love the most is their soundstage and depth ..

Would it be possible to get a diagram of their crossover, now that they are discontinued? I would like to investigate some crossover upgrades to make them better.. thanks.

ric

  • Full Member
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Re: Spatial Audio M4 Triode loudspeakers
« Reply #1 on: 26 Dec 2025, 02:23 pm »
Hi, I have the M3 Turbo S and I upgraded the main capacitor parts and the resistor. I replaced the 6.8uf caps in the mids and the 68uf caps in the bass, then replacing the resistor with a Path resistor. I used Jupiter foil type caps.
You might want to expose the crossover and take pictures. It was scary for me, since I'm not familiar with electronics, but I can solder a little.
Huge impact, Highly recommended, just buy the best caps you can afford. Eventually I also replaced the wiring to the speakers with anti cables wire, and I used Duelund silver wire for the tweeters.
Good luck!