Material : Iron plate + Rubber.
MMLFX 2pcs Woofer Radiator Bass Passive Speaker 3" Low Frequency Loudspeaker Diaphragm Vibration Plate DIY
90160 Stainless Steel Bass Diaphragm Speaker Vibration Plate for Indoor Use
Guitar Amplifier | Practice Guitar Speaker | Portable Bass Amp Speaker for Beginners Adults Home Recording Stage Performance Small Gig
Professional 90160 Stainless Steel Bass Diaphragm Speaker Passive Radiators
