Operation Manual

USB 7490/7491

Monitor speaker

4. INPUT ( XLR/TRS SOCKET )

Connect your mixer, cd player, minidisc or a computer sound card)

5. MID BOOST SELECTOR

Two selections are available for the Mid-Boost, ‘In’ and ‘Out’.

The ‘Out’ setting produces a flat frequency response curve, while the ‘In’

setting gives an added boost to mid-range frequencies.

6. POWER CONNECTOR

Connect the AC cable provided with the set.

7. POWER SWITCH

Press this switch to turn the power on or off. Before operating this switch, make

sure that all controls are set at minimum position.

8. LEVEL CONTROL

To adjust the volume of the speaker.

9. ACCOUSTIC SPACE

The Acoustic Space switch has 3 positions:

- Half space: speakers are against the wall, 0dB position

- Three-Quarter space: speakers are in corners or close to the wall, -2dB position

- Full space: speakers are away from the wall, -4dB position

10. HIGH FREQ

Three settings are possible, -2dB, 0dB, and +2dB.

0dB is a setting with no attenuation, while the -2dB and +2dB settings will

enhance or boost high frequencies.

11. LOW CUT

This 3-position switch sets the bass frequency.

The lowest setting, 56Hz, is essentially a low cutoff b

ypass as it does not attenuate

the USB 7490’s frequency response. Other settings are 80Hz and 100Hz.

12. FUSE