Headphone Volume Control
This product allows the connection of a stereo balanced line input via 2 x female XLRs and creates a headphone output, with level control.
It is transformer balanced, and can be used with any headphones above 150Ω impedance. The transformer ratio of 2:1 ensures that any headphone load presented at the output is reflected through to the input at a 1:4 ratio (hence a 150Ω set of headphones looks like 600Ω at the input, a suitable load for most good quality line output stages).
Connectors & Controls
The stereo headphone output uses a stereo 6.35mm jack socket with the following connections:
The headphone level will be at half the level of
the incoming signal with the volume control at 100%.
Volume Level Control
The volume level control sets the output level of the stereo headphone socket and runs logarithmically from zero to the maximum output level.
Analogue Inputs CM-HPX1
The stereo analogue input is on two female 3 pin
XLR connectors with the following pin assignments:
Pin 1: 0V Common
Pin 2: Phase
Pin 3: Non Phase
|Input/Output Level Ratio:||2:1|
|Input/Output Impedance Ratio:||4:1|
|Minimum Headphone Impedance:||150Ω|
|Max Input Level:||+28dBu|
|Max Output Level:||+22dBu|
|Frequency Response:||20Hz to 20kHz, +0/-0.5dB|
|Distortion Ref +8dBu (Output):||<0.01%|
|Common Mode Rejection:||>80dB|
|Main Stereo Input (CM-HPX1):||2 x XLR 3 pin, female|
|Output:||¼” (6.35mm) A/B gauge 3-pole stereo jack sockets|
|CM-HPX1:||Headphone volume control, XLR input|
|Dimensions (Raw):||7.7cm (W) x 8.3cm (D) x 4.2cm (H) 3.0” (W) x 3.3” (D) x 1.7” (H)|
|Dimensions (Boxed):||12.7cm (W) x 22.9cm (D) x 7.6cm (H) 5” (W) x 9” (D) x 3” (H)|
|Weight:||Nett: 0.22kg Gross: 0.33kg Nett: 0.49lbs Gross: 0.73lbs|
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