Polk Audio RTA11T Crossover Modification Thread
VR3
Posts: 28,999
Throwing around some Dayton caps and resistors! The resistors are under the board, how I like it... was a fun project!
- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
Comments
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Some partial upgrade work!
The Mdl caps are very nice for the money
A full rebuild
Post edited by VR3 on- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit. -
How did the RTA11TL crossover upgrade sound?
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All owners have been happy to my knowledge 😁- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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Good to know as I start on mine. Thanks.
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I like the way you tucked the large inductor underneath the capacitor on a standoff platform.
What would you surmise would be the improvements in a 7B that has Mills/Sonicaps and internal wiring upgrades but still has the original Polk wound air core inductors, in going with Jantzen perfect lay inductors or US Coils?George / NJ
Polk 7B main speakers, std. mods+ (1979, orig owner)
Martin Logan Dynamo sub w/6ft 14awg Power Cord
Onkyo A-8017 integrated
Logitech Squeezebox Touch Streamer w/EDO applet
iFi nano iDSD DAC
iPurifier3
iDefender w/ iPower PS
Custom Steve Wilson 1m UPOCC Interconnect
iFi Mercury 0.5m OFHC continuous cast copper USB cable
Custom Ribbon Speaker Cables, 5ft long, 4N Copper, 14awg, ultra low inductance
Custom Vibration Isolation Speaker Stands and Sub Platform -
Thank you!
The issue with the original Polk coils is how poorly wound they are. When you compare them to a perfect lay which is perfectly wound side to side and as tight as possible... The sound is just better. You receive more details and finer nuances. I highly recommend replacing board inductors.
Madisound inductors which are what are used here are not perfect lay but still wound way way better than the og polks- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit. -
Pardon my naivety…The issue with the original Polk coils is how poorly wound* they are. When you compare them to a perfect lay which is perfectly wound side to side and as tight as possible... The sound is just better.
…no chance you could “tighten*” the winding?
Thanks regardless, you make a difference to this forum
TonySamsung 60" UN60ES6100 LED, Outlaw Audio 976 Pre/Pro, Samsung BDP, Amazon Firestick, Phillips CD Changer
Canare 14 ga - LCR tweeters inside*; Ctr Ch outside
BJC 10 ga - LCR mids “Foamed & Plugged**”, inside* & out
8 ga Powerline: LR woofers, inside* & out
*soldered **Rob the Man (Xschop)
LR: Tri-amped RTi A7 w/Rotels*. Woofers - 980BX; Tweets & Mids - RB981*
Ctr Ch: Rotel RB981* -> Bi-amped CSi A6
Surrounds: Rotel 981* -> AR 12 ga -> RTi A3
*all connected w/Premiere ICs
5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”
Power Conditioning & Distribution:
4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s -
It is not just the tightness. A perfect lay is just that, perfectly wound with no cross cross wires, etc.- Not Tom ::::::: Any system can play Diana Krall. Only the best can play Limp Bizkit.
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vr3: thanks so much for taking time out to explain the term “perfect lay”Samsung 60" UN60ES6100 LED, Outlaw Audio 976 Pre/Pro, Samsung BDP, Amazon Firestick, Phillips CD Changer
Canare 14 ga - LCR tweeters inside*; Ctr Ch outside
BJC 10 ga - LCR mids “Foamed & Plugged**”, inside* & out
8 ga Powerline: LR woofers, inside* & out
*soldered **Rob the Man (Xschop)
LR: Tri-amped RTi A7 w/Rotels*. Woofers - 980BX; Tweets & Mids - RB981*
Ctr Ch: Rotel RB981* -> Bi-amped CSi A6
Surrounds: Rotel 981* -> AR 12 ga -> RTi A3
*all connected w/Premiere ICs
5 Subs: Sunfire True SW Signature -> LFE & Ctr Ch; 4 Audio Pro Evidence @ the “Corners”
Power Conditioning & Distribution:
4 dedicated 20A feeds; APC H15; 5 Furman Miniport 20s
