Audio Input and Output Help

Input Type

• 3.5mm (1/8”) TRS, Stereo, unbalanced
• Max Peak Input: -10dBV (316mV RMS)
• Input Impedance: 29k ohms

Output Type

• 3.5mm (1/8”) TRS, Stereo, unbalanced
• Max Output : -10dBV (316mV RMS) at 10k ohms “Line Level”
• Load Impedance : 10k – 200k ohms

NEVER connect the input if levels are directly from an amplifier or loudspeaker connection. Doing so may result in damage.

NEVER connect the output to a balanced input that has 48V microphone phantom power enabled. Doing so may result in damage.

The output is stereo unbalanced and should not be connected to a balanced input as very poor sound quality will result.

Audio Input Tips

• Line or headphone output of consumer or professional audio equipment is recommended.
• If the input source level is too low turning up the input fader may produce noise. If the input level is too high it may distort.

Audio Output Tips

• Line level output is not suitable for connection to headphones. Although some sound can be heard in headphones, and it may be useful from time to time, the volume and quality will not usually be satisfactory.
• Connection to a load with a lower impedance (fewer ohms) will result in distortion and loss of bass. There is no upper limit for the load impedance, but very high impedance loads might result in some noise being heard.
• When possible connect directly to mixer or power amplifier “line level” inputs.
• If the input impedance is less than 10k ohms it is advisable to insert a suitable pre-amplifier between the console and the mixer/ amplifier.

Preventing hum

• When the ColorSource AV console is connected to external audio equipment, and some other peripherals, audible hum may be produced. This is usually due to a phenomenon known as a ground-loop or hum-loop where several pieces of equipment are grounded independently and then also to each other.
• Ground loops can sometimes be cured by simple means including re-arranging the grounding of the mixer/ amplifier and source of sound.

You should ask a competent electrician to perform any changes of grounding as it could affect equipment safety.

• If hum cannot be cured easily you should consider using a Direct Injection (DI) box. You will need a stereo DI box on either the input or the output, and exceptionally on both. DI boxes are readily obtainable from music stores. You need a fully isolated type.