diff --git a/rtl/sound/jt12/jt12_top.v b/rtl/sound/jt12/jt12_top.v
index 2f584e9..9ed7c16 100644
--- a/rtl/sound/jt12/jt12_top.v
+++ b/rtl/sound/jt12/jt12_top.v
@@ -453,7 +453,7 @@ endgenerate
 `ifndef NOSSG
 generate
     if( use_ssg==1 ) begin : gen_ssg
-        jt49 #(.COMP(3'b01), .CLKDIV(JT49_DIV), .YM2203_LUMPED(YM2203_LUMPED))
+        jt49 #(.COMP(3'b00), .CLKDIV(JT49_DIV), .YM2203_LUMPED(YM2203_LUMPED))
             u_psg( // note that input ports are not multiplexed
             .rst_n      ( ~rst      ),
             .clk        ( clk       ),    // signal on positive edge