GarageBand: Real Instruments sometimes can't be heard while recording
Symptoms
When you record Real Instruments into GarageBand, sometimes there is no sound, or the sound level is too low, to record well.
Products Affected
GarageBand, Real Instruments
Resolution
This issue arises from a mismatch in levels. Most computers have line level inputs. Such inputs are designed to accept signals that have been pre-amplified. Run the instrument or mic through a pre-amp, and connect the line-level output of the pre-amp to the computer audio input. Alternatively, there are many FireWire or USB audio interfaces that offer built-in pre-amps.
Additional Information
Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.