diff --git a/sx3_BackGains.txt b/sx3_BackGains.txt
new file mode 100644
index 0000000..b4fed9d
--- /dev/null
+++ b/sx3_BackGains.txt
@@ -0,0 +1,12 @@
+7 0 1.20298
+7 1 0.995493
+7 2 0.993613
+7 3 1.2514
+9 0 1.01574
+9 1 0.961032
+9 2 0.988379
+9 3 1.05832
+19 0 1.07936
+19 1 0.97626
+19 2 1.00078
+19 3 1.03335
diff --git a/sx3_GainMatchfront.txt b/sx3_GainMatchfront.txt
new file mode 100644
index 0000000..4f5669b
--- /dev/null
+++ b/sx3_GainMatchfront.txt
@@ -0,0 +1,8 @@
+3 0 1 1 -0.852399 0.881228
+3 0 2 2 -0.813845 0.975967
+3 0 3 3 -0.859643 0.863715
+3 1 1 1 -0.76728 0.942438
+3 1 2 2 -0.780302 0.929008
+3 2 2 2 -0.729082 1.02005
+3 3 2 2 -0.759098 1.05376
+3 3 3 3 -0.821183 0.952335