Harman-Kardon GB4 manual STE1

STE1

48V

3

Stereo Input

STE MIC GAIN (1) adjusts the sensitivity of both pairs of Mic (XLRs) or Line (1/4" jacks) inputs. Both pairs are electronically balanced, and are located on the rear connector panel.

	L
STE			PK
MIC		30
GAIN
LINE =	5	60dB
-20
		L
MONO
		R
HF	3	- 0 + 3
6			6
9			9
12			12
	15	15
HM	3	- 0 + 3
6			6
9			9
12			12
	15	15
LM	3	- 0 + 3
6			6
9			9
12			12
	15	15
LF	3	- 0 + 3
6			6
9			9
12			12
	15	15
	EQ
AUX1
PRE			0
		+ 6
AUX2
PRE			0
		+ 6
AUX3
PRE			0
		+ 6
AUX4
PRE			0
		+ 6
AUX5
PRE			0
POST
		+ 6
AUX6
PRE			0
POST
		+ 6
AUX7
PRE			0
POST
		+ 6
AUX8
PRE			0
POST
		+ 6
BAL		0
	L	R

4The PEAK LED (2), monitors both left and right signals after the gain control.

2

1The 48V switch (3) applies 48V phantom power to the input XLRs. An adjacent LED indicates when the phantom power is on.

5	The Left PHASE switch (4) inverts the phase of the left channel.
	The L switch (5) routes the left input signal to both L and R channels in the module. The R switch
	similarly routes the right input signal. Pressing L and R together mono sums the input.

The EQ section (6) is four band, with shelving high and low frequencies and peaking high-mid

6and low-mid bands.

The HF control gives +/-15dB cut/boost at 12KHz. The LF control gives +/-15dB cut/boost at 60Hz. The HM control gives +/-15dB cut/boost at a centre frequency of 2.5kHz, and the LM control gives +/-15dB cut/boost at a centre frequency of 450Hz.

The EQ is switched in by the EQ switch (7).

7A mono sum of the signal is sent to the AUX 1-8 busses via individual level pots (8). Aux 1- 4 are pre fader signals, whilst Aux 5-8 are globally selectable pre or post fade via switches on the master section.

The BAL control (9) allows the stereo image to be balanced between the left and right channels within the module.

The stereo signal in the module is turned on and off by the illuminated MUTE switch (10), and

8also the master mutes M1-M4 from the master section, if they are selected using the M1 - M4 switches (11).

Post-fader signal level is controlled by a 100mm stereo fader (12).

The signal is sent to the stereo mix bus, centre bus and 4 group busses using the C, L+R, 1-2 and 3-4 switches (13). Note the use of group 1 & 2, and group 3 & 4 as 2 sets of stereo pairs. The feed to the centre bus is a mono sum of the stereo signal.

A 4-segment LED bargraph meter (14), next to the fader, meters the signal post-EQ, pre-mute,

9pre-fade. The meter has a peak type response.

12

	MUTE
10	C
	L
5	R
	1
	2
0	3
	4
5	+16
	+8
	0
10	-10
	M
	1
15
	M
	2
20	M
	3
	M
	4
30
	PFL
	STE1

10

13

14

11

15

The PFL switch (15) feeds a mono sum of the pre-mute, pre-fade signal to the monitor output and phones output. An adjacent LED indicates when the PFL is on.

28 GB4 User Guide