From 7b890ffba1b9d62716871cc496f5bc732c66734d Mon Sep 17 00:00:00 2001
From: pschatzmann <phil.schatzmann@gmail.com>
Date: Wed, 27 Mar 2024 10:56:22 +0100
Subject: [PATCH] AudioDriverAD1938Class

---
 src/Driver.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/Driver.h b/src/Driver.h
index 9678a19..49fb7df 100644
--- a/src/Driver.h
+++ b/src/Driver.h
@@ -360,9 +360,9 @@ class AudioDriverAD1938Class : public AudioDriver {
   }
   bool end(void) override { return ad1938.end(); }
   bool setMute(bool mute) override { return ad1938.setMute(mute); }
-  // mutes an individual DAC
+  // mutes an individual DAC: valid range (0:3)
   bool setMute(bool mute, int line) { 
-    if (line > 7) return false;
+  if (dac_num > 3) return false;
     return ad1938.setVolumeDAC(line, mute ? 0.0 : (static_cast<float>(volumes[line]) / 100.0f));
   }