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In Reply to: Re: Does placing the crossover near the amp help control posted by Dave I on May 27, 2000 at 06:57:50:
... you can make a substantial improvement (again IMO) to a conventional speaker without relocating the crossover by simply bringing separate return lines from the drivers back to the amp and allowing the return current from the crossover to have its own line also. This of course still requires access to the crossover to disconnect the driver returns. In effect you are creating a super node at the power amp return terminal which is the lowest impedance point that you have access to in order to minimize cable impedance contributions to the sound of the speaker system. I this way, each driver's cable impedance is only modulated by in band signals.Dave
Dave,thanks for the post!
I like this supernode idea. Letīs wave the starwired banner- I try it.How do you rate the starshaped routing against the triwiring you have implied? Letīs say, you have the xxxnode in a speaker internal crossover.
This reminds me of a comment I once received- the closer the crossover to the terminal, the betterCiao,
Philipp
It depends on many factors Philipp, cable type, crossover type, etc but on my DIY system with careful attention paid to phase matching in the crossover regions and passive component selection the improvement with separate return lines was quite significant compared to a star ground at the crossover. It provides most of the same advantages as moving the crossovers to the amp (which also provides important mechanical isolation) but not quite. I would encourage you to try it in steps and report your findings if possible as I was amazed at the improvement possible.Dave
Dave,
so the star(supernod=overall star) is formed with separate return lines from both the speaker and the crossover at the amp- and the speakers are tri-wired; the crossover is close to the amp (and then protected against interference and vibration)
Thanks, Iīm looking forward testing it on my timealigned speaker projectregards,
Philipp
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