Reddit reviews StarTech.com 1m Black DB9 RS232 Serial Null Modem Cable F/M - DB9 Male to Female - 9 pin Null Modem Cable - 1x DB9 (M), 1x DB9 (F), Black (SCNM9FM1MBK)
We found 1 Reddit comments about StarTech.com 1m Black DB9 RS232 Serial Null Modem Cable F/M - DB9 Male to Female - 9 pin Null Modem Cable - 1x DB9 (M), 1x DB9 (F), Black (SCNM9FM1MBK). Here are the top ones, ranked by their Reddit score.
Connect your serial devicesand transfer your files1m DB9 Null Modem CableDB9 Male to Female CableRS232 Null Modem Cable9 pin Null Modem Cable1 m Male to Female Null Modem Cable1x DB9 (M)1x DB9 (F)Black
The connector from the wired remote control to the subwoofer rear panel is a 9-pin male D-sub connector, as seen on one end of:
https://www.amazon.ca/StarTech-com-SCNM9FM1MBK-RS232-Serial-Female/dp/B00CEMGLEQ/
You could also get only the
You could also get a replacement remote from eBay:
https://www.ebay.com/itm/Edifier-M3300-Multimedia-Subwoofer-and-dial-adjuster-FREE-SHIPPING/113230077526
To get from the PS4's HDMI output to an analog input for the Edifier 3300, you could use an HDMI audio extractor which produces an analog signal:
https://www.amazon.ca/Neoteck-Extractor-Adjustment-Optical-Converter/dp/B07DD9N44Q/
If you're handy with basic electronics, you could build yourself an RCA to Edifier connector by using a multimeter to probe your broken wired remote (and/or inspect the amplifier on the inside of the woofer) to figure out which of the pins on the D-sub connector are actually used for audio. There will be at least three pins used (L+, R+, LED +), plus the shield. /r/audiorepair might be able to help with detailed advice.