Owner's Manual

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H8 DSP

Digital Interface Processor

User’s manual

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Source Setting.

- Turn on the system and play track 1 of the CD supplied with the H8 DSP.

- Set all tone controls to zero (flat).

- Set balance and fader to center.

- Adjust the head unit volume to the maximum undistorted output level.

- If the source features an adjustable equalizer, make sure that all controls

are set to zero (flat).

Press BACK to go back to the previous step.

Press NEXT to go ahead with the setup procedure.

Press CANCEL to exit the procedure.

WARNING: the head unit level must be elevated to the

maximum undistorted level

. If the head unit distortion level

can not be tested in advance, adjust the volume to approximately 80% of its maximum. If the head unit

output

level is set too low

, the device will produce ground noise (hissing sound) when playing music tracks.

This is due to the low signal / noise ratio provided by the H8 DSP input head unit. If you have this problem,

after you

calibrate the amplifiers sensitivity

(see 8.1.21), increase the head unit volume and

repeat the H8 DSP

calibration procedure

as detailed in the following chapter 9

Head unit input-level instrument check

You will need an oscilloscope for this instrument check.

- Connect the head unit output to the oscilloscope.

- Play track 1 of the H8 DSP CD.

- Set tone, fader, balance controls and the equalizer (if any) to zero (flat).

- Turn on the car.

- Adjust the volume control so that the oscilloscope shows

a sine wave with slightly cut peaks, as shown in the figure.

- Note down the volume used by the head unit. It must be left in this

position for the following operations.

FL ± /FR ± /RL ± /RR ±

IN HI-LEVEL

wires

FL ± (TWL) /FR ± (TWR) /FL ± (WL) /FR ± (WR)

FL ± /FR ± /RL ± (Sub L) /RR ± (Sub R)

FL ± /FR ±

7. Master high-level main inputs configuration.

You can assign to any of the processor input channels a name corresponding to the signal coming from the source.

The available names are: FL (Front Left Full); FR (Front Right Full); RL (Rear Left Full); RR (Rear Right Full); FLTW

(Front Left Tweeter); FRTW (Front Right Tweeter); FLW (Front Left Woofer); FRW (Front Right Woofer); Sub L (Sub Left);

Sub R (Sub Right).

The H8 DSP will use these names to reconstruct a full range signal coming from an OEM source with a dedicated

multi-channel amplifier and assign the corresponding signal to the respective analog output.

Press BACK to go back to the previous step.

Press NEXT to go ahead with the setup procedure.

Press CANCEL to exit the procedure.