Polk Audio Monitor 4.6

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knelson092856
knelson092856 Posts: 2
in Forum Testing Area
I just purchased a pair of polk monitor 4.6 series2 speakers. When I opened the box they appear to be almost new. I am fine leaving the tweeters and woofers. Are there obvious circuitry updates that they may require?
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  • Gardenstater
    Gardenstater Posts: 4,180
    edited March 2022 Answer ✓
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    Pictures or it didn't happen :D

    Only one resistor and one capacitor won't set you back a whole lot, even with stagflation.

    Schematic:
    https://us.v-cdn.net/5021930/uploads/attachments/4/6/7/2/8/18761.pdf

    Check the Midwoofers (MWs) for voice coil rubbing and then listen to them awhile and test with some low frequency tones and if everything is fine, glue the magnet assemblies to prevent shifting and then mod the XO's and internal wiring would be my advice. I'd probably put an order in for a couple of RDO-198s while they are still available, which is the updated tweeter. There are other mods such as steel rings inside for the MWs, DnamatXtreme (or similar) to dampen the baskets, Armacell foam inside the baskets to help with backwave distortions, and Blackhole5 behind the MW's for same.

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    George / NJ

    Polk 7B main speakers, std. mods+ (1979, orig owner)
    Martin Logan Dynamo sub w/6ft 14awg Power Cord
    Crown D150 amp
    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
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