The structure of the horn frame: the outer diameter of the frame, which determines the size of the horn; after the outer diameter is the inner and outer diameter of the drum paper R ring; the middle hole of the frame determines the diameter of the voice coil and the number of waves of the elastic wave; the effective height of the frame determines The drum paper is effective and high.
The quality requirements of the basin frame: flatness, height setting, heat dissipation design, surface treatment inspection, in order to check whether the iron frame or aluminum frame can adhere well to the adhesive after the surface treatment, generally use the wetness test to detect. The thickness of the electroplating film should be greater than 5um. To check whether the iron frame is resistant to oxidation and rust, use a salt water spray test to test. 5% or 8% brine 48H.
