CS245i schematic
Tbone289
Posts: 661
I've been spoiled over the past few years having dorokusai's crossover schematics available for all my Polk speakers. It's been a great resource for crossover upgrades.
However, I'm using a CS245i in my HT setup now that I don't have a schematic for. I pulled the crossover last night to look for cap values for replacement and found something odd. One of the resistors was half-pulled out of the board. One leg was not soldered in to the through-hole, but the leg and through-hole had solder on them, as if it had been soldered in at one point, then heated and pulled. There was glue residue on the board with the outline of the resistor, but the resistor was pulled clear away and only soldered to the board on one side.
I decided to solder it back in, but I'm wondering if this was an intentional alteration at the factory, or a mistake. I would think that if it were an intentional factory modification, the resistor would have been completely pulled and not just hanging there by one leg.
Is there a schematic available for this speaker?
However, I'm using a CS245i in my HT setup now that I don't have a schematic for. I pulled the crossover last night to look for cap values for replacement and found something odd. One of the resistors was half-pulled out of the board. One leg was not soldered in to the through-hole, but the leg and through-hole had solder on them, as if it had been soldered in at one point, then heated and pulled. There was glue residue on the board with the outline of the resistor, but the resistor was pulled clear away and only soldered to the board on one side.
I decided to solder it back in, but I'm wondering if this was an intentional alteration at the factory, or a mistake. I would think that if it were an intentional factory modification, the resistor would have been completely pulled and not just hanging there by one leg.
Is there a schematic available for this speaker?
2.1: PC>Schiit Gungnir MB>Schiit Freya Noval>NAD C-270>Ascend Acoustics Sierra-1, HSU STF-2 5.1: HDMI Bitstream>Denon AVR-1910>polkaudio RTE55, CS350-LS, RT3, HSU STF-2, Visio M55-F0
Post edited by Tbone289 on
Comments
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I guess nobody knows.
Does anyone have a 245i that could check to see if there are two sand-cast resistors soldered in on the underside of the board?2.1: PC>Schiit Gungnir MB>Schiit Freya Noval>NAD C-270>Ascend Acoustics Sierra-1, HSU STF-2 5.1: HDMI Bitstream>Denon AVR-1910>polkaudio RTE55, CS350-LS, RT3, HSU STF-2, Visio M55-F0 -
I would contact dorokusai via PM, as he has all the schematics. See this thread:
http://www.polkaudio.com/forums/showthread.php?38755-POLK-AUDIO-Speaker-Wiring-Schematics-amp-More-ALL-MODELS-except-SDAPanasonic PT-AE4000U projector for movies
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