Taken from a recent Audioholics reply regarding "Club Polk" and Polk speakers:
"I'm yet to hear a Polk speaker that merits more than a sentence and 60 seconds discussion."
"Green leaves reveal the heart spoken Khatru"- Jon Anderson
"Have A Little Faith! And Everything You'll Face, Will Jump From Out Right On Into Place! Yeah! Take A Little Time! And Everything You'll Find, Will Move From Gloom Right On Into Shine!"- Arthur Lee
In answer to your original question, the 10s are very much worth the effort and expense, depending on the original condition.
To do the mod for the 198s, find the schematic at the top of this forum "schematic_m10_sl3000mod".
Pay careful attention to the inductor that must be changed, particularly the resistance value, not just the mh value.
If you do decide on the upgrade, I can offer advice on the parts needed, the schematic doesn't tell the whole story.
Center: Custom Built http://www.polkaudio.com/forums/show...hannel-Project
Surrounds & Rears: Custom Built http://www.polkaudio.com/forums/show...rround-Project
All with Sonicaps, Mills, RDO-194s-198s, Dynamat & Hurricane Nuts.
Pioneer Elite VSX-72TXV, Carver PM-350
Bose 901 Series II Continentals, Custom Rebuilt Equalizer
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