Geddes multiple subwoofer method - 3 subs vice 4


Geddes recommends 3 subs for optimal sound - a different perspective

 

Interesting video depicting Geddes philosophy on using subs. Also, he treats the main speakers as part of the bass solution and does not recommend using high pass filters as this takes away from the total bass capabilities of the entire speaker sub interface system. I am going to experiment this weekend. Also, a higher crossover frequency for the first sub collocated closer to the main speakers is new to me. Recommended above 100 hertz for the first sub and then incrementally lower for the 2nd and 3rd sub in an asymmetric pattern. 
 

I feel like the Geddes approach for sub integration closely resembles what I have been doing for years without even knowing this method. So, my 18” deep bass and 15” mid bass drivers on the field coil speakers become part of the solution instead of being taken out of the equation. That’s what I have been doing and that’s what I thought sounded best to me. Multiple ways to do sub integration but this method is the one that pretty mirrors how I have been doing it for years.

audioquest4life

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My subwoofers offer high pass connectivity and filtering. The manufactures instructions suggests:  

If your main amplifier has difficulty driving your main speakers bass to your satisfaction then give the subs high pass circuit a try.

If your main speakers are small and lack bass then give the subs high pass a try.

I love the way my amps drive my speakers low bass. A few of my older LP's simply sound better with the subs off.

Since these subs multi parameter, frequency band auto optimization does so well matching the speakers low frequency presentation, high pass filtering is noticeably wasted. Surprisingly, this decade old twenty minute optimization software quickly and easily solves much of todays hifi subwoofer setup and integration issues.     

 

@rauliruegas  If you should happen on a used Plus in any size I think you might be amazed. All the best.