I have 4 Behringer microphones (around £20) and a “SOUNDLAB 4 CHANNEL MONO MICROPHONE MIXER WITH EFFECTS“. I am attempting to start a podcast. When I record the audio, unless it is on full blast on all dials, I am unable to be heard. Even on full volume I am very quiet and drowned out by the white noise. The XLR cables I use are the default cables that came with the microphones. As the inputs are all 3.5mm I use a 3.5 to 1.35mm adapter that goes into my input line on my Mac. I record on Garage band. I also don’t have too much money to spend (only around £20-30) and I don’t have a lot of sound engineering expertise.

  • We need to know more about the mics. Best guess right now is they might need phantom power, or their impedance is badly matched to a 'headset' input. See sound.stackexchange.com/a/44185/9601 for a common issue with new users. Generally, 'pro' mics are not compatible with computer inputs. A mic preamp is required. i really cannnot tell what that mixer is meant to be, but I doubt it is meant to plug into a computer. – Tetsujin Oct 20 at 19:14
  • They are xm8500 ultra voice dynamic cardioid vocal microphones. Would I need one with 4 3.5mm inputs or would i connect my mixer into it? – Xavier Oct 20 at 19:22
  • Another thing to add is that my adapter that connects to my mac is a 3.5mm to 1.35mm and it jiggles about in the input port. The XLR cable leading into it also jiggles about. – Xavier Oct 20 at 19:41
  • Basically, you have too little input gain. The microphones output a low level signal (as dynamic mics do). The mixer seems to be quite a bit short on what gain it can produce (not even stated in the description). The mac expects a stronger signal than the mixer creates. Your solution would need to include more gain somehow. But even if you add the gain after your mixer, the mixer might be creating a lot of noise. – ghellquist Oct 21 at 12:49
  • No-one seems to publish any spec on this mixer, but reading between the lines from the advertising blurb - "A micro mixer that can expand a single input on a music mixer to take up to 4 microphones." - the output is low impedance. It's expecting to go into a 'pro' mixer & is not matched to a computer input. You will probably need a dedicated mic>USB pre-amp. You can get one for £30 [just]. – Tetsujin Oct 21 at 15:11

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