Creative 1820M Rear Panel Connections, Line Level Analog Inputs, Turntable Inputs & Ground Lug

3 - PCI Card & Interfaces

The AudioDock

Rear Panel Connections

	6 Balanced Line Level Inputs					Turntable Inputs	Turntable	Alternate Outputs
	(configured as 3 stereo pairs)					(tied to line input 3)	Ground (same as outputs 1-4)
1L	1R	2L	2R	3L	3R	3L Phono 3R	Gnd	1 L/R	2 L/R	3 L/R	4 L/R
											Out
In
						Monitor					Card

Out

1L 1R 2L 2R 3L 3R 4L 4R In MIDI 2 Out

6 Balanced Line Level Outputs	Monitor	MIDI Port 2	Connect to
(configured as 3 stereo pairs)	Outputs	In/Out	E-MU 1010 Card

Line Level Analog Inputs

Six balanced 24-bit, line-level, analog inputs are provided (1-3). These can be used to input any line level signal from keyboards, CD-players, cassette decks, etc. The analog inputs are assigned to mixer strips in the mixer application. Input line level can be set to accommodate the consumer -10dBV standard, or the pro audio +4 dBu standard in the I/O screen of the Session Settings dialog box. See I/O Settings.

The maximum input level in pro mode is 18dBV (=20.2dBu). Maximum output level in consumer mode is 6dBV.

Either TRS balanced or TS unbalanced cables can be used. See page 101 for additional information about unbalanced cables and connectors. The line-level inputs are all servo-balanced, enabling them to convert unbalanced signals to balanced signals internally to reduce noise.

Turntable Inputs & Ground Lug

The RCA turntable inputs feed an RIAA equalized preamp designed to accept moving magnet type phono cartridges. The turntable inputs share line level inputs 3L and 3R. Inserting a plug into Line Input 3 disconnects the turntable preamp from that channel. Connect the ground lead from your turntable to the ground lug to prevent hum.

Line Level Analog Outputs

Eight balanced 24-bit, line-level, analog outputs are provided (1-4). Output pair 4 is designated as the Monitor Output and is fed by the monitor bus of the PatchMix DSP mixer application. We suggest that you plug your speakers in here. All the analog outputs can be freely assigned in the mixer application. Special anti-pop circuitry mutes the analog outputs when power is turned on or off.

Like the analog line inputs, either TRS balanced or TS unbalanced cables can be used. Balanced cables provide better noise immunity and +6dB higher signal level. The output line level can be set to accommodate the consumer -10dBV standard, or the pro audio +4 dBu standard in the I/O screen of the Session Settings dialog box. See I/O Settings.

The maximum input and output line levels are matched when the input and output settings are set to the same mode (pro or consumer) in the I/O preferences screen.

IMPORTANT NOTE:

Do NOT use balanced audio cables (TRS) when connecting balanced outputs to unbalanced inputs. Doing so can increase noise levels and introduce hum.

Warning: Do NOT leave your turntable connected when using outputs 3L and 3R. This can cause a ground loop.

•It’s also a good idea to mute Dock inputs 3 in the PatchMix DSP mixer when nothing is plugged in, since the turntable preamp has a very high gain (60dB) and could contribute extra noise to your mix/monitor bus.

22 Creative Professional