I liked my bi-amped Sonos IKEA Symfonisk pair of vintage Klipsch KG4 speakers so much I decided to upgrade the cabinets with damping and a brace, sand and refinish the wood veneer cabinets, paint the front and back, and add a pair of 5 way binding posts. They sound incredible now.
Amazon links are affiliate and support the channel.
Noico 80 mil 10 sqft car Sound deadening mat, Butyl Automotive Sound Deadener, Audio Noise Insulation and dampening
https://amzn.to/3FRJkoa
Neoprene Foam Tape with 3" Core, 1/16" x 1/2" x 100', Black
https://amzn.to/3BXsdAh
Woodcrafter 3/4" Thick Baltic Birch Plywood Circle 6 Inch
https://amzn.to/3BVgrqb
GearIT 12AWG Premium Heavy Duty Braided Speaker Wire (6 Feet) with Dual Gold Plated Banana Plug Tips - Oxygen-Free Copper (OFC) Construction, White
https://amzn.to/3BUYDeU
Gold Plated Binding Post Banana Jacks Connectors Extra Long Shaft with Solder Tabs (4-Pair)
https://amzn.to/3WClAv7
KabelDirekt - Pure Copper Stereo Audio Speaker Wire & Cable - Made in Germany - 14 AWG Gauge - 50 feet
https://amzn.to/3hGlYKt
Rust-Oleum 327916 American Accents Spray Paint, 12 oz, Satin Canyon Black
https://amzn.to/3vc0dW4