spatial audio M3 or M4 as an upgrade


I am using a pair of rebuilt and fully modded pair of dahlquist  dq 20s.All internal caps,resistors,wiring,inductors,posts upgraded.also used a product called cascade in woofer cabinent .cascade is like concrete when dried making cabinent dead.Silver  solder brass screws and more used.I am considering An upgrade.Can anyone chime in about spatial as an upgrade and not a lateral move?It It's hard to go back to a box speaker after these.I want to dethrown these at an affordable price.I want music to sound right and be able to hear subtleties at same time.It 's hard to get the brass right and hear the details too.
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Showing 1 response by audiogalore

Thank you for the detail analysis on the Spatial M4. I presently have a CS 3.0 MkII setup and driving the same with a Woo WA5 Set Class 300b 8W high current amp. that is the best I have heard from the speakers and personally have tried many SS amps and found the Woo best. The closest that came to it was a First Watt F1. Hard to beat the warm tubes sound, mids and highs to kill for, especially 300b. I am now wanting to try the Spatial M3 full range passive crossover setup. I presently use the CS 3.0 MKII with a JL 113 for LF but I feel the combination is not the same having the woofer matching the envelope incorporating from one chassis.