Until recently I had a Phonic Firefly audio interface connected to my iMac via FireWire. I used two mono jack-to-jack leads to route the audio output from this to a small mixing console so that I could mix it with other signals (e.g. from an electronic drum kit, or a phone or other device). This always worked without a hitch.
However, I recently upgraded my iMac to a newer model that has no FireWire port, rendering my Firefly interface useless. After a bit of research, I decided to buy a Scarlett 2i4
. It's connected to my iMac via USB (of course), and has a pair of active monitors connected to the 1-2 pair of phono outputs. This works fine just for listening to whatever happens to be playing on the iMac. I say this simply to point out that the basic functioning of the 2i4 seems to be OK.
However, when I connect the 1-2 pair of 1/4" jack outputs on the back of the 2i4 to my mixing console (as I used to do with my Phonic Firefly), I don't get any signal showing on the mixing console and I can't hear anything coming through it. I've also tried taking the output from the 3-4 pair of phono outputs, with the same result. I've tested the jack-to-jack cables I'm using and they're fine, as is the mixing console. If I plug a pair of headphones directly into either of the 1-2 output sockets on the back of the 2i4, I can hear audio, though not very loud.
What is happening here? Why can't I get a usable signal from the outputs on the back of the 2i4? Any ideas?