I purchased a Line 6 Spider IV 15 amplifier about 10 months ago for playing and demoing tracks. It has worked quite well and I love the amp, but about a month or so after getting it, sometimes I would go to record, and there would be massive feedback. I would swap cables around and unplug and replug cables until it would suddenly stop. It started happing more often until now, I'm unable to stop it. For the past month, I have been unable to get it to stop. I have tried several different cables, adapters, computers, and power supplies, and nothing will get it to stop now.
My setup is: Guitar > 1" cable > Amp > 1" male / 3.5mm female adapter > Double-male 3.5mm cable > microphone line-in jack on computer
This has enabled me to record easily and clearly and has no problems besides when this feedback started. It sounds like wind overloading a microphone outside. Its explosive, and overbears any recording. Its not a problem of my guitar, the adapter, or the double male 3.5mm cable as I recorded the guitar straight into the computer to rule out those 3. Its not the amp or the 1" cables I've tried, because when the amp is played outloud, there's no feedback of any kind. I've mixed and swapped different adapters and cables, and nothing solves the problem. Only when I'm trying to record do I get this noise. Its not the noise gate either, I've tried turning it off and back on, it doesn't solve anything.
Has anyone else had this problem? Id like to know if there's anything I could do to fix it, or if my amp is defective and I could have it swapped or something.