Hello,
I have inherited a pair of speakers: seas thor kit in Planet 10 quarterwave transmission line cabinets which are 49.5 x 9 x 13 inches. These belonged to two great men in my audio club and now I have inherited them. I believe they have the original crossover or something else that does not work. The speakers produce phenomenal (overpowering) deep bass and and a very forward midrange and treble that is highly detailed and fatiguing. I am looking for a crossover schematic that will suit this speaker without throwing out all the great bass and detail. I am happy to splurge on high quality components for the crossover as the drivers are excellent.
My friend that had these speakers said that this forum has had several different clever people work on this before and I am hoping that I can refine these beauties with help from the DIY community.
Regards
Rhett
I have inherited a pair of speakers: seas thor kit in Planet 10 quarterwave transmission line cabinets which are 49.5 x 9 x 13 inches. These belonged to two great men in my audio club and now I have inherited them. I believe they have the original crossover or something else that does not work. The speakers produce phenomenal (overpowering) deep bass and and a very forward midrange and treble that is highly detailed and fatiguing. I am looking for a crossover schematic that will suit this speaker without throwing out all the great bass and detail. I am happy to splurge on high quality components for the crossover as the drivers are excellent.
My friend that had these speakers said that this forum has had several different clever people work on this before and I am hoping that I can refine these beauties with help from the DIY community.
Regards
Rhett
Attachments
Hi,
Planet 10 has made a pdf where different cabinets and crossovers are shown (Thor-Revisited.pdf). Based on the cabinet dimensions you seem to have the "SMALL THOR ML-TL". However, the paper does not include Jimangie's latest crossover from 2015 (see attachment 2).
Planet 10 has made a pdf where different cabinets and crossovers are shown (Thor-Revisited.pdf). Based on the cabinet dimensions you seem to have the "SMALL THOR ML-TL". However, the paper does not include Jimangie's latest crossover from 2015 (see attachment 2).
I plan on revisiting the Thor XO this autumn -- even bought an industrial turntable to place them on --
Try this approach maybe.
https://purifi-audio.com/wp-content/uploads/2022/03/220211_R05-Notchfilter.pdf
https://purifi-audio.com/wp-content/uploads/2022/03/220211_R05-Notchfilter.pdf
As one who has wrestled with W18 Seas, the only reasonable response was with a Zobel network across the paralleled W18's. Flattening the impedance curve helps immeasurably.
Years ago I heard a pair that sounded good…I think the owner brought the crossover frequency down to about 1800hz with a larger first woofer inductor and removing the resistor from peak/break-up attenuation leg(?). Reminds me of the crossover Jeff Bagby used on his Parts Express “TANGO” kit.