Polk Audio RTA15TL Castle Level Mods

Parts List -
Tweeter Circuit -
Clarity Cap ESA/Mundorf Supreme
Mundorf Mox or Mills 12w
Madisound Air Core Inductor

Midbass Circuit -
Clarity Cap PX
Mundorf Mox or Mills 12w

Upgrade Features -
Based off schematics from - "Decato" from Club Polk
Point to Point wiring
99.99% Copper, Gold Plated Insulated Binding Post
Upgraded DH Labs T100 Wiring

Price of Upgrade?
Please email for pricing, Vr3Mods@GMail.com
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Learn more about Castle Mods, Click Here!


Thoughts from the customer?

"Just connected everything and put on my “reference” recordings … Sounds GREAT! Definite improvements over the whole range, more balanced than before; all harshness gone from the tweeters, midrange clarity is improved, especially on top; and the bass is tighter. I’m putting the speakers on points sooner rather than later, and I’ll keep you posted on how they burn in! Thanks … Alan Many apologies for not keeping you (and the forum) up-to-date on how the XOs are working for me; I’ve been swamped with work and it fell by the wayside. They sounded great out of the box and continued to improve as they burned in. I’m getting noticeably more clarity and smoothness all around at all volumes; tighter bass and the boominess is gone, great details in the mids and the high end is sweet and clear without the tweeters putting out so much of the mids. I put the cabinets on points, which helped further on the low end, and tilted them up slightly to help further on the high end. I’d have to spend at least $5,000 (plus an expensive amp upgrade) to get a pair of speakers that sound any better than this! Thanks again for doing such a superb job! Regards … Alan" - Alan (Polk Audio RTA15TL Castle Level Mods)

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