I seem to be having the same issues that a lot of people have reported, where I cannot get the Marshall Gateway app to connect to my Code 25. I've only had the amp for about a week and I cannot get the app to see it. ?
I can connect to the amp via Bluetooth using my phone (Pixel 3a, Android 11) and whilst connected, can use it as a BT speaker to play music from Spotify. However, nothing I do seems to get the app to connect to the amplifier.
-I've updated the amp to the latest firmware using my laptop/web browser.
-I've followed all the instructions in the Bluetooth Connectivity Troubleshooter to the letter (CODE - Gateway Bluetooth Connection Troubleshooting - my.marshall.com)
No matter what I do, or what order I install/uninstall/connect, the app will not see the amplifier. Everything works otherwise - I'm able to apply Patches from ? using a USB connection - and the amp sounds great. I'd just like to be able to control it from my phone.
I have found a weird thing that may or may not be known with iOS + Bluetooth and the Code 50.
The CODE 50 when playing backing tracks / using it as a Bluetooth speaker is very quiet (So the master is wacked up and the playing guitar is extremely loud).
and the weirdest thing (which physically makes sense but still it shouldn't do it) is that the Amp is predominatly a Left speaker when playing music through bluetooth as my phone (iPhone 6S) thinks my amp is bluetooth headphones rather than speaker (as the headphone icon pops up on the top right).
My amp is on the latest firmware update.
Is there any fix for this? There's nothing in the gateway app for audio balencing
Actually I'm totaly not interested in bluetooth connection, but of course I understand that it might be an essential prolem for some people...
But there are some other problems I'd like you to find good solution for.
1. Master volume. From 0 to 10% there is almost no sound, over 10% it becomes very loud.
2. Decreasing sound level with Volume pot results in decreasing USB signal level - not acceptable for players using USB output for recording in DAW software. It would be nice if for clean preamp gain at 2 and volume at 3 give recording level about -6 dB, now it is about -36 dB...
Best regards, Jacek.
P.S. What is a frequency range of CODE 25 speaker?