Nilfisk-ALTO ALTO Q user manual Introduction, Features, Element Controls, Front Panel

1. INTRODUCTION

With LTO-Q you have acquired an indispensable toll to add clarity and flexibility to your music. The LTO-Q 5 bands parametric equaliser will provide precise audio signal control to fixed sound installation, live performance and studio applications. Thanks to the use of selected and expensive components the performances of LTO-Q are worth much more than its price: Variable Q controls allow you to notch out unwanted frequencies while sweepable frequency control add maximum flexibility to your mix.

2.FEATURES

Mountable in one standard rack unit 19"

1/4" TRS type jack and balanced XLR connectors available

Led Meter (12 LED) to read input and output

Low cut and high cut filters available to cancel unwanted frequencies

Bypass function to connect automatically input and output

Optimum transparency of the audio signal and minimum phase shift insured by the parallel architecture of the filters

Switch-on button on every single band

Constant Q principle combination

5 bands of equalisation fully parametric (gain, frequency, Q) for studio and live applications

The frequency range of the single 5 bands is overlapping. This will allow extreme boost or attenuation

3.ELEMENT CONTROLS

3.1 The Front Panel

11

4

2

BAND 1

BAND 2

BAND 3

BAND 4

BAND 5

INPUT / OUTPUT

LEVEL (dB)

20Hz - 400Hz

IN IN / OUT OUT

60Hz - 1KHz

IN IN / OUT OUT

150Hz - 2.5KHz

IN IN / OUT OUT

500Hz - 8KHz

IN IN / OUT OUT

1KHz - 20KHz

IN IN / OUT OUT

-30 -24 -18 -12 -6 -3 0 +3 +6 +9 +12 +18

I / O METER

																											OUTPUT		INPUT
	110	1.2	0		260	1.2	0		720	1.2		0		2.3	1.2	0		5.1	1.2	0		75		10			0			Q
LTOR	45	150	-5	+5	120	360	-5	+5	350	1K	-5	+5	1.0		3.1	-5	+5	2.2	7.0	-5	+5	50	110	7	15	-5	+5			5-BAND PARAMETRIC
	30	250	-10	+10	70	600	-10		+10 200	1.6K	-10	+10	0.6		4.8	-10	+10	1.3	12	-10	+10	25	200			22	+10		ON	EQUALIZER
																												AUDIO
																							3.5			-10			OFF

20

400

0.03

1.6

-15

+15

60

1K

0.03

1.6

-15

+15

150

2.5K

0.03

1.6

-15

+15

0.5

8.0

0.03

1.6

-15

+15

1.0

20

0.03

1.6

-15

+15

10

400

2.5

30

-15

+15 IN

OUT

Hz

OCTAVE

dB

Hz

OCTAVE

dB

Hz

OCTAVE

dB

KHz

OCTAVE

dB

KHz

OCTAVE

dB

Hz

KHz

dB

FREQUENCY

BANDWIDTH

LEVEL

FREQUENCY

BANDWIDTH

LEVEL

FREQUENCY

BANDWIDTH

LEVEL

FREQUENCY

BANDWIDTH

LEVEL

FREQUENCY

BANDWIDTH

LEVEL

LOW CUT

HIGH CUT

INPUT

POWER

10 9 8 7 6 5 3 1

Your LTO-Q includes 5 channels of equalisation. 3 rotary controls and 1 switch are present in each channel. The Master Section includes the power switch, 2 push-on switches, 3 rotary controls and 12 LED's.

1.POWER switch

When you set this switch in ON position (green light on) the unit will be turned on. When you set this switch in OFF position (green light off) the unit will be turned off.

2.The INPUT/OUTPUT control

With this control in ON position, the Led Meter will read the output level. With this control in OFF position, the Led Meter will read the input level.

3.The AUDIO IN/OUT control

The input jack of your LTO-Q is directly connected to the output jack when this control is OFF or if the unit is not connected to the AC socket. It is used to cause a "hard-bypass" and disable the equalisation process in the signal path.

4.The INPUT/OUTPUT LEVEL

The readable range of this 12 segments LED display is -30dB to +18dB. As mentioned before it will read either the INPUT or the OUTPUT level depending on the position of the switch (2).

4