Nilfisk ALTO Stereo Equalizer CONTROL60 User Manual

User's Manual  
30+30 Band  
Digital Equalizer  
CONTROL60  
R
Version 2.3 September 2005  
English  
 
PREFACE  
Dear Customer:  
Thanks for choosing LTO CONTROL60 and thanks for choosing one of the results of LTO AUDIO TEAM job and  
researches.  
For our LTO AUDIO TEAM, music and sound are more than a job...are first of all passion and let us say our  
obsession!  
We have been designing professional audio products for a long time in cooperation with some of the major brands  
in the world in the audio field.  
The LTO line presents unparalleled analogue and digital products made by Musicians for Musicians in our R&D  
centers in Italy, Netherlands, United Kingdom and Taiwan. The core of our digital audio products is a sophisticated  
DSP (Digital Sound Processor) and a large range of state of the art algorithms which have been developed by our  
Software Team for the last 7 years.  
Because we are convinced you are the most important member of LTO AUDIO TEAM and the one confirming the  
quality of our job, we would like to share with you our work and our dreams, paying attention to your suggestions  
and your comments.  
Following this idea we create our products and we will create the new ones! From our side, we guarantee you and  
we will guarantee you also in future the best quality, the best fruits of our continuous researches and the best prices.  
Our LTO CONTROL60 is the result of many hours of listening and tests involving common people, area experts,  
musicians and technicians.  
The result of this effort is a DSP hi-performance equalizer that can be used in applications as musical performances,  
installation and sound reinforcement.  
Besides we offer to you a number of factory EQ curves that we collected and transformed in presets now available  
in our small, efficient and easy to use LTO CONTROL60.  
Nothing else to add, but that we would like to thank all the people that made the LTO CONTROL60 a reality available  
to our customers, and thank our designers and all the LTO staff, people who make possible the realization of products  
containing our idea of music and sound and are ready to support you, our customers, in the best way, conscious  
that you are our best richness.  
Thank you very much  
LTO AUDIO TEAM  
2
 
TABLE OF CONTENTS  
1. INTRODUCTION ....................................................................................................................................4  
2. FEATURE LIST ......................................................................................................................................4  
3. CONTROL ELEMENTS..........................................................................................................................4  
3.1 The Front Panel  
3.2 The Rear Panel  
4. INSTALLATION & CONNECTION .........................................................................................................5  
4.1 Power Up and Audio Connections  
a. Audio Connections  
b.Power Up Setting  
4.2 Installation  
a. Standard Use  
b. Application Examples  
4.3 Operational Overview  
4.3.1 UTILITY KEY  
a. Load Preset  
b. Store Preset  
c. EQ. Type  
d. MIDI Setup  
4.3.2 EDIT EQ  
4.3.3 HP/LP  
4.3.4 AUX  
5. MIDI STANDARD CONTROL ..............................................................................................................12  
6. TECHNICAL SPECIFICATIONS...........................................................................................................15  
7. WARRANTY ..........................................................................................................................................16  
3
 
1. INTRODUCTION  
Purchasing LTO CONTROL60, you purchase a very powerful equalizer, easy to use and contain in a very efficient  
single unit rack package.  
Our new CONTROL60 is a versatile and very powerful parametric/graphic PRE-EQ. It is based on 2 extremely  
powerful high speed 24 32-bit DSPs and very high quality 20-bit A/D and 24-bit D/A converters, preserving the  
pureness of analogue sound in your digital applications. It can be operated in 6 different modes:  
Graphic 2 30 Dual Mono 1/3 oct(GR.D.M)  
Graphic 2 30 Stereo 1/3 oct(GR.ST)  
Graphic 1 60 Mono 1/6 oct(GR.Mono )  
Parametric 2 30 Dual Mono(PAR.D.M)  
Parametric 2 30 Stereo (PAR.ST)  
Parametric 1 60 Mono (PAR.Mono)  
allowing the user to obtain the desired sound and timbre out of the musical signals easily.  
These algorithms are fully dual mono/stereo algorithms and use very powerful high precision and symmetrical  
filters, designed for professional use, able to modify the sound color improving the over all sound quality without  
introducing any loss or distortion.  
2. FEATURE LIST  
Robust and Compact Design  
Digital Stereo Equalizer with 24/32-bit High-Speed DSP Processor  
Very High-Quality BurrBrown 20-bit A/D and 24 D/A Converters for Pure and Clean Audio Quality  
Easy to Operate Front Panel Controls and Display  
Open Architecture for Easy Software Updates  
MPU Control  
2
30 or 1 60 Band Parametric Equalizer  
Windows Editor for Easy to Use and Powerful Pc Based MIDI Remote Control  
SMT Design for Greater Reliability  
Optimized Signal Path to Provide Superior Sound  
Manufactured Under QS9000, VDA6.1 Quality System  
3. CONTROL ELEMENTS  
3.1 The Front Panel  
16 13  
11  
10  
5
4
3
2
CLIP  
-6  
-12  
-18  
-24  
-30  
UP  
CONTROL60  
30 30 Band  
Digital Equalizer  
UTILITY  
EDIT  
CHANNEL  
VU METER  
ENTER  
ESC  
BYPASS  
HP/LP  
FLAT  
AUX  
R
ON  
RIGHT  
LEFT  
OFF  
DOWN  
POWER  
18  
17  
15 14 12  
9
8
7
6
1
1.Power Switch with LED  
2.Channel key with LED  
3.Flat key  
4.Bypass key with LED  
5.Utility key with LED  
6.VU meter key with LED  
7.AUX key with LED  
8.HP/LP key with LED  
9.Edit key with LED  
10.Dial Control knob  
11.Enter key  
12.Esc key  
4
 
13.Up key  
14.Right key  
15.Down key  
16.Left key  
17.LCD graphical display 128 64  
18.Vu-meter  
Power Switch With LED (1)  
Turns the apparatus on and off. Press the SW, the power LED inside the SW will turn on.  
Dial Control Knob (10)  
Used only to change editable values.  
3.2 The Rear Panel  
MIDI  
AC INPUT  
95-240V 60-50Hz  
Rated Power Consumption 15W  
FUSE:  
210-240V: T250mAL 250VAC  
95-120V: 500mA 250VAC  
REPLACE FUSE WITH CORRECT  
TYPE ONLY  
Apparaten skall anslutas till  
jordat uttag nar den ansluts  
till ett natverk  
OUTPUT  
THRU  
INPUT  
OUTPUT2  
OUTPUT1  
INPUT2  
INPUT1  
Input (19/20)  
These are XLR balanced connectors which connect to sources such as the channel inserts of mixing consoles.  
They may be used with nominal input levels from consumer to professional audio.  
Outputs (21/22)  
These are XLR balanced connectors which connect to devices such as the channel inserts on a mixing console  
or power amplifier input. For mono applications, use the output1 and/or output2.  
MIDI Connectors  
MIDI in (23): 5-poles DIN connector for the MIDI input to the CONTROL60.  
MIDI thru (24): 5-poles DIN connector for the MIDI thru.  
MIDI out (25): 5-poles DIN connector for the MIDI output from the CONTROL60.  
Power Connector (26)  
This is an IEC 3-pole socket for connecting the AC power supply to the CONTROL60.  
4. INSTALLATION & CONNECTION  
4.1 Power Up and Audio Connections  
a. Audio Connections  
The connections between the CONTROL60 and the other audio devices have to be made using high quality  
cables so to prevent bad performances of the CONTROL60 itself. So it should be good to use low-capacitance  
shielded cables with a flexible internal conductor. Connect the cables to the CONTROL60 properly by observing  
the following precautions:  
Do not bundle audio cables with AC power cords.  
Do not place audio cables and CONTROL60 near sources of electromagnetic interference such as:  
Transformers, monitors, computers, etc.  
Always unplug cables by firmly grasping the body of the plug and pulling directly outward.  
Do not place cables where they can be stepped on.  
b. Power Up Setting  
Before turning on the CONTROL60's power, check if:  
All connections have been made correctly.  
The volume controls of the amplifier or mixer are turned down.  
Insert the Power plug into the POWER input on the rear panel of the CONTROL60 and plug the power cord into  
an AC outlet.  
Turn on the power of the CONTROL60, pushing the ON/OFF button on the front panel.  
Turn on the power of the amplifier/mixer, and adjust the volume.  
4.2 Installation  
a. Standard Use  
The CONTROL60 may be placed almost anywhere: on a table, on top of an amp, next to a mixing console. If it will  
be on furniture, check the rubber feet provided to the bottom of the unit. Make sure to place the CONTROL60 away  
from other audio equipment that may induce fields, and away from the signal wiring.  
It is possible that CONTROL60 may pick up noise fields generated by other equipment such as large power amplifiers;  
in this case, move the CONTROL60 until the noise goes away.  
b. Application Examples  
- line instrument  
When connecting audio cables and/or turning power on and off, make sure that all devices in your system have  
their volume controls turned down.  
CONTROL60 has two XLR balanced inputs and two XLR balanced outputs allowing the CONTROL60 to be  
used in a classical Stereo in and Stereo Out connection or in Mono configuration as described below.  
MONO. Select the mono way in EQ TYPE. Connect one audio cable to the Input1 of the CONTROL60 from  
a mono source, and one or two other audio cables from the Output1 and Output2 of the CONTROL60 to a mono/  
stereo amplification system or one/two mixer inputs.  
STEREO. Select the stereo way in EQ TYPE. Connect two audio cables to the Input1 and Input2 of the CON-  
TROL60 from a stereo source, and two other audio cables from the Output1 and Output2 of the CONTROL60  
to a stereo amplification system or two mixer inputs.  
This connection scheme is suitable also for processing Hi-Fi stereo sources like CD players or recording decks.  
To process the signal coming from low signal voltage devices such as Hi-Fi turntable cartridges or microphones,  
please insert before CONTROL60 a suitable pre-amplifier (i.e. a RIAA stage for turntables, our MicTube for  
microphones).  
To Amplifier or Mixing Console  
From Stereo Audio Source  
Input 1  
Input 2  
Output 1  
Output 2  
CLIP  
-6  
-12  
-18  
-24  
-30  
UP  
CONTROL60  
30 30 Band  
Digital Equalizer  
UTILITY  
BYPASS  
HP/LP  
FLAT  
AUX  
CHANNEL  
ENTER  
ESC  
R
ON  
LEFT  
RIGHT  
OFF  
EDIT  
VU METER  
DOWN  
POWER  
- mixer  
Interfacing to a Mixing Console  
The CONTROL60 can accept mono or stereo sends at all system levels. The input circuitry of the CONTROL60  
can easily accept professional levels while having enough input and output gain to interface with the low signal  
levels of home recording systems.  
The CONTROL60 may be connected to a mixing console connecting the unit directly to the channel insert  
socket of a single channel that is to be processed. Another way of interfacing the CONTROL60 to a mixer or  
recording console would be in-line between the output of your mixing console and the input of a tape deck or  
power amplifier. This last setup would be used only if you wanted to process the entire mix.  
Using Inserts  
Inserts  
Input 1  
Output 1  
Input 2  
Output 2  
CLIP  
-6  
-12  
-18  
-24  
-30  
UP  
CONTROL60  
30 30 Band  
Digital Equalizer  
MIXING CONSOLE  
ENTER  
UTILITY  
BYPASS  
FLAT  
CHANNEL  
R
ON  
LEFT  
RIGHT  
OFF  
ESC  
EDIT  
HP/LP  
AUX  
VU METER  
DOWN  
POWER  
In the above figure it is described the situation in which you want to apply the CONTROL60 to a couple of  
channels arriving to a mixing console, in order to apply the desired equalization to single 'instruments' signals;  
in this case you will have to use a mixer which features individual channel inserts. Insert jacks on the back of  
a mixer provide a way of 'inserting' external processing equipment into the signal path. The insert occurs after  
the input amplifier, and before the channel fader; essentially it is the same as connecting the  
6
 
source (instrument or mic) into the CONTROL60 before the mixer's channel input. Usually, insert connections  
require a special, stereo-splitting Y-cord to be connected, known as TRS connector. This connector has a stereo  
jack which plugs into mixer's channel insert socket, and a couple of mono jacks (input and output) which will plug  
into CONTROL60 via jack-XLR adapters. Fitting this kind of cabling will virtually insert into one mixer's channel  
the EQ process. Take good care in adjusting CONTROL60 input and output levels, in order to satisfy the dynamics  
needs of both the processed channels. Do not use for the CONTROL60 the effects send/return connections found  
on most mixers for effect modules, as they could lead to heavy frequency response alterations.  
Improper level setting when using a digital processor is the most common cause of noise and distortion problems.  
4.3.Operational Overview  
Switching ON the CONTROL60, at system startup these screens will appear:  
This phase lasts some seconds, then, the system loads the last used preset and proceed to the utility menu,  
the related LED on, if the system was not bypass when switched on.  
4.3.1 UTILITY KEY  
To access the UTILITY menu it's necessary to push the UTILITY key. When pressing the utility key (utility LED  
on), this screen will appear:  
a. Load Preset  
This function allows the loading of one of the 99 available presets, where the first 36 presets (6 for each EQ  
type) are factory presets, and the presets from 37 to 99 are the user's configurable presets and all not initialized  
(empty) when CONTROL60 is shipped.  
To load a preset:  
The starting screen is this:  
Here can be found the name, number, type of the current preset. Pressing enter when on the RET item  
causes the system to return to the main menu.  
Move into the screen with UP/DOWN keys; the user can select the preset field, the selected items are  
reversed to underline them. To load a preset it is necessary to select the preset item, choose the desired  
preset with the dial knob and at last press enter.  
7
 
To load the preset. If the EQ is Dual Mono (DM), first choose the channel with the Channel key. It is very  
important that the preset to be loaded belong to the same type (PAR ST, MN, etc) indicated in the upper  
right corner to the window. If the user tries to load a different type or EMPTY preset, a warning "NO LOAD-  
ING" will be shown. To return to main menu select the item RET and press ENTER.  
b. Store Preset  
With this function the user can store a preset into one of the 63 locations available to the user. This is  
the access screen.  
In this window the user can find the position in which to save the current preset. With up/down it's possible  
to select the item RET or the field preset; selected items are graphically reversed.  
To save a preset the item Preset has to be selected, with the dial it's possible to choose the desired position  
and lastly press ENTER to save.  
After saving the preset a string of characters will be shown, in which the user will edit the preset's name  
(max. 8 characters). With Left/Right it's possible to move inside the string, the dial selects the blinking  
char, Enter confirms, Esc cancels operation allowing to retain the old preset's name.  
If confirmed, the new name will be shown in the left lower corner and in the preset field.  
To return to the main menu, select RET and press.  
c. EQ. Type  
With this function it's possible to change the EQ type.  
8
 
With Up/Down select one of the 6 possible EQ type (ex. Parametric mono 1 60). Selection is shown reversing  
the item.  
To confirm press enter. The following warning will be shown to the user:  
If confirmed, the system will load the new EQ type with a default preset. Whatever editing info which was  
not stored will be lost.  
Use UP/DOWN/LEFT/RIGHT key to select one of the 4 fields. Use ENTER to access selected function  
sub-menu.  
If the CONTROL60 is already working on UTILITY menu, each further use of the button will have no effect.  
At the end the user will be presented with a window containing the updated preset.  
To return to the main menu, select RET and press ENTER.  
d. MIDI Setup  
With this function the user can set the MIDI configuration. This is the starting screen.  
With Up/Down the user can select the MIDI channel and/or the output enable. The selection is shown reversing  
the item.  
9
 
With the dial knob the parameter values can be changed (no confirmation needed). To get back to the main  
menu select RET and press ENTER. These two are system parameters and do not belong to any preset.  
4.3.2 EDIT EQ  
Press EDIT key, the related LED on, this screen will present:  
Use UP/DOWN/LEFT/RIGHT to select an item; filter number, Gain, Freq, Bandwidth.  
If the selected item is filter number, then with the dial knob it's possible to change it between 1 and 60 PEQ  
or GEQ if EQ type is Mono, otherwise 30 PEQ or GEQ per channel. Filter frequency will be shown by a  
vertical segment crossing the frequency axis.  
If the selected item is Gain, Freq or Bandwidth, then with the dial it's possible to change the value of the  
selected parameter. The filter characteristics are varied in real time and immediately audible (no confirmation  
needed), while the graphics is updated after a small delay. While the system is calculating the new curve  
an asterisk is shown in the upper right corner of the window.  
If the EQ type is graphic it will be possible to select only Gain and filter number.  
When into this menu, using the FLAT key sets all the gains to 0dB (Edit LED ON).  
4.3.3 HP/LP  
Press HP/LP key (the associated LED is ON). This screen will present:  
10  
 
Use UP/DOWN/LEFT/RIGHT to select between Freq, Order relative to HP and LP (Butter worth).  
Dial changes selected values, while updating the graphics, the asterisk will be shown as above. The filter  
will be inserted into the signal path in real time (no confirmation needed).  
4.3.4 AUX  
Press AUX key (the related LED is ON), this screen will present:  
Use UP/DOWN/LEFT/RIGHT to select between Delay Adjust, Delay Fine, Output Volumes and Input Gain.  
Dial changes selected values, no confirmation is needed.  
When finished editing the EQ preset, if desired the result can be saved with the STORE function; otherwise  
whatever preset loading will overwrite all the parameters. In the same way when the EQ is switched off all  
unsaved data will be lost. If the system is switched off while in bypass mode, when switched on again it will  
start in bypass mode. In this mode all the keys are disabled until the user presses again the BYPASS key  
restoring the system to normal operation.  
Bypass key: Using this key is possible to bypass the process, sending to the CONTROL60 outputs exactly  
the input signals. this is a digital bypass and the input signal is anyway converted digitally before to be sent  
to the outputs. When the CONTROL60 is in this mode (bypass LED will on), all the keys except the BYPASS  
key are disabled.  
Up/Down/Left/Right key: These keys are used to navigate menus.  
Enter/Esc key: These keys are used to access or to leave the menus, or to confirm the parameter values.  
Edit key: This key allows the user to enter the EDIT menu (the Edit LED will be On).  
When entered the edit menu, the user will be able to access and modify all the parameters related to the  
process. When the user modifies one parameter value, the LED starts to blink to signal the update. The LED  
will blink until the storing of the new modified preset in one of the 64 available locations.  
Vu-meter key: This function allows the user to set visualization of input (LED OFF) or output (LED ON)  
signal on the LED bar-graphs.  
Channel key: Selects the channel to be edited if the EQ type is dual mono; the channels are indicated by  
different LED colors.  
Graphic display: 128 64 pixel  
Flat key: By means of this key it is possible to reset all the parametric filters, i.e. Set all the gains to 0dB.  
This key works only when the edit LED is lit. When entering into EDIT EQ , flat key should be used to set all  
the gains to 0dB.  
11  
 
Notes:  
If the system is in bypass whatever control change command is ignored, except controller # 86.  
Select the channel to edit by means of the controller 0 (bank).  
If the type of EQ is Graphic or Parametric mono (1x60), assign to controller 84 (Mode) the value to edit the  
first 30 filters and the value 1 to edit the following 30 filters.  
At EQ type change, the system loads a default preset belonging to the same EQ type.  
Warnings:  
1. Before starting a MIDI session please set on the Control60 the same MIDI channel used by the external controller.  
2. During a MIDI control session the unit's graphic display is NOT updated.  
3. After MIDI use of Control60 it's advisable to run a manual STORE to save preset changes done by means  
of the external controller. After saving, reboot the Control60 to use it as a stand-along unit.  
MIDI Controllers Values  
Amplitude 15dB / 15dB step 0.5dB  
(Value = d u)  
d \ u  
0
0
1
2
3
4
5
6
7
8
9
15.0dB  
10.0dB  
05.0dB  
00.0dB  
05.0dB  
10.0dB  
15.0dB  
14.5dB  
09.5dB  
04.5dB  
00.5dB  
05.5dB  
10.5dB  
14.0dB  
09.0dB  
04.0dB  
01.0dB  
06.0dB  
11.0dB  
13.5dB  
08.5dB  
03.5dB  
01.5dB  
06.5dB  
11.5dB  
13.0dB  
08.0dB  
03.0dB  
02.0dB  
07.0dB  
12.0dB  
12.5dB  
07.5dB  
02.5dB  
02.5dB  
07.5dB  
12.5dB  
12.0dB  
07.0dB  
2.0dB  
03.0dB  
08.0dB  
13.0dB  
11.5dB  
06.5dB  
1.5dB  
03.5dB  
08.5dB  
13.5dB  
11.0dB  
06.0dB  
1.0dB  
04.0dB  
09.0dB  
14.0dB  
10.5dB  
05.5dB  
00.5dB  
04.5dB  
09.5dB  
14.5dB  
10  
20  
30  
40  
50  
60  
Frequency 20Hz- 20KHz step 1/12 oct  
(value = d u)  
d \ u  
0
0
1
2
3
4
5
6
7
8
9
20  
21,2  
37,9  
67  
22,5  
23,7  
25  
45  
26,6  
28,3  
29,9  
53,5  
95  
31,5  
57  
33,6  
10  
35,8  
63  
40  
71,5  
125  
42,5  
76  
47,5  
85  
50  
90  
59,5  
20  
80  
100  
106,5  
190  
30  
113  
119  
134  
143  
250  
450  
800  
151,5  
266,5  
475  
160  
170  
180  
40  
200  
212,5  
379  
225  
237,5  
425  
283  
299  
315  
336,5  
597,5  
1062  
1900  
3362  
5975  
10625  
19000  
50  
358  
400  
500  
532,5  
950  
565  
60  
630  
672,5  
1187  
2125  
3787  
6725  
11875  
715  
757,5  
1337  
2375  
4250  
7575  
13375  
850  
900  
1000  
1800  
3150  
5650  
10000  
18000  
70  
1125  
2000  
3575  
6300  
11250  
20000  
1250  
2250  
4000  
7150  
12500  
1425  
2500  
1512  
2662  
4750  
8500  
15125  
1600  
2825  
5000  
9000  
16000  
1700  
2987  
5325  
9500  
17000  
80  
90  
4500  
100  
110  
120  
8000  
14250  
13  
 
Bandwidth 0.05 oct - 3 oct step 0.05 oct  
(value = d u)  
d \ u  
0
0
1
2
3
4
5
6
7
8
9
0,05  
0,55  
1,05  
1,55  
2,05  
2,55  
0,1  
0,6  
1,1  
1,6  
2,1  
2,6  
0,15  
0,65  
1,15  
1,65  
2,15  
2,65  
0,2  
0,7  
1,2  
1,7  
2,2  
2,7  
0,25  
0,75  
1,25  
1,75  
2,25  
2,75  
0,3  
0,8  
1,3  
1,8  
2,3  
2,8  
0,35  
0,85  
1,35  
1,85  
2,35  
2,85  
0,4  
0,9  
1,4  
1,9  
2,4  
2,9  
0,45  
0,95  
1,45  
1,95  
2,45  
2,95  
0,5  
10  
20  
30  
40  
50  
1
1,5  
2
2,5  
3
Input Gain & Output Volume 12dB/ 12dB step 0.5dB  
(value = d u)  
d \ u  
0
0
1
2
3
4
5
6
7
8
9
12.0dB  
07.0dB  
2.0dB  
03.0dB  
08.0dB  
11.5dB  
06.5dB  
1.5dB  
03.5dB  
08.5dB  
11.0dB  
06.0dB  
1.0dB  
04.0dB  
09.0dB  
10.5dB  
05.5dB  
00.5dB  
04.5dB  
09.5dB  
10.0dB  
05.0dB  
00.0dB  
05.0dB  
10.0dB  
09.5dB  
04.5dB  
00.5dB  
05.5dB  
10.5dB  
09.0dB  
04.0dB  
01.0dB  
06.0dB  
11.0dB  
08.5dB  
03.5dB  
01.5dB  
06.5dB  
11.5dB  
08.0dB  
03.0dB  
02.0dB  
07.0dB  
12.0dB  
07.5dB  
02.5dB  
02.5dB  
07.5dB  
10  
20  
30  
40  
14  
 
6.TECHNICAL SPECIFICATIONS  
/+15dB step 0.5dB  
Parametric Filters  
Band Pass Filters  
Gain  
Freq  
20Hz 20KHz step 1/12 oct  
0.05oct 3oct step 0.05oct  
Bandwidth  
High pass Butterworth  
Freq  
20Hz 20KHz step 1/12 oct  
Bypass, 1st ord ( 6dB/oct), 2nd ord ( 12dB/oct)  
Slope  
Low pass Butterworth  
20Hz 20KHz Step 1/12 oct  
st  
Bypass, 1 ord ( 6dB/oct), 2nd ord ( 12dB/oct  
Freq  
Slope  
Delay line  
Up to 512 ms min step 21us  
/+12dB step 0.5dB  
AUX Section  
Digital input gain  
Digital output volume  
Inputs  
Input Impedance  
Max. Input Level  
Outputs  
/+12dB step 0.5dB  
2 XLR F electronically balanced  
Analog Input Section  
Analog Output Section  
Digital/Analog Interface  
>40 Kohms  
+12dBv  
2 XLR M electronically balanced  
<200 Ohms  
Output Impedance  
Max. Output Level  
Amplitude Response  
Signal to Noise Ratio  
+12dBv  
20Hz 20KHz  
>99 dB  
THD+N  
Sampling Frequency  
Conversion  
0.01  
1KHz 3 dBFS  
46.875 KHz  
Input 20 bits Sigma-Delta  
Output 24 bits Sigma-Delta  
36 (6 for each EQ type)  
63  
Conversion  
Memory  
Factory preset  
User preset  
Connections  
Input/output/thru  
5
MIDI Section  
poles DIN(female)  
Sockets  
mode  
Photocoupled  
Power Supply  
Connector type  
Type  
3 pole IEC, grounded  
Servo controlled, switching  
fuse  
210 240V: T250mAL 250VAC  
95 120V: 500mAL 250VAC  
95 240V~60 50Hz  
15W  
AC Input  
Rated power consumption  
Graphic Display  
Keyboard  
User Interface  
Physical  
128 64 dot  
14 user keys/8 LEDs  
Vu meter  
2
6 LEDs  
Size  
Standard 19"rack mounting  
Dimensions  
weight  
483(W) 232.5(D) 44(H)mm(19" 9.3" 1.7")  
3.5Kg(7.72lb)  
15  
 
7. WARRANTY  
1. WARRANTY REGISTRATION CARD  
To obtain Warranty Service, the buyer should first fill out and return the enclosed Warranty Registration Card within  
10 days of the Purchase Date.  
All the information presented in this Warranty Registration Card gives the manufacturer a better understanding of  
the sales status, so as to purport a more effective and efficient after-sales warranty service.  
Please fill out all the information carefully and genuinely, miswriting or absence of this card will void your warranty  
service.  
2. RETURN NOTICE  
2.1 In case of return for any warranty service, please make sure that the product is well packed in its original shipping  
carton, and it can protect your unit from any other extra damage.  
2.2 Please provide a copy of your sales receipt or other proof of purchase with the returned machine, and give detail  
information about your return address and contact telephone number.  
2.3 A brief description of the defect will be appreciated.  
2.4 Please prepay all the costs involved in the return shipping, handling and insurance.  
3. TERMS AND CONDITIONS  
3.1 LTO warrants that this product will be free from any defects in materials and/or workmanship for a period  
of 1 year from the purchase date if you have completed the Warranty Registration Card in time.  
3.2 The warranty service is only available to the original consumer, who purchased this product directly from the  
retail dealer, and it can not be transferred.  
3.3 During the warranty service, LTO may repair or replace this product at its own option at no charge to you for  
parts or for labor in accordance with the right side of this limited warranty.  
3.4 This warranty does not apply to the damages to this product that occurred as the following conditions:  
Instead of operating in accordance with the user's manual thoroughly, any abuse or misuse of this product.  
Normal tear and wear.  
The product has been altered or modified in any way.  
Damage which may have been caused either directly or indirectly by another product / force / etc.  
Abnormal service or repairing by anyone other than the qualified personnel or technician.  
And in such cases, all the expenses will be charged to the buyer.  
3.5 In no event shall LTO be liable for any incidental or consequential damages. Some states do not allow the exclu-  
sion or limitation of incidental or consequential damages, so the above exclusion or limitation may not apply to you.  
3.6 This warranty gives you the specific rights, and these rights are compatible with the state laws, you may also  
have other statutory rights that may vary from state to state.  
16  
 
SEIKAKU TECHNICAL GROUP LIMITED  
No. 1, Lane 17, Sec. 2, Han Shi West Road, Taichung 40151 Taiwan  
email: [email protected] Fax: 886-4-22346757  
All rights reserved to ALTO. All features and content might be changed  
without prior notice. Any photocopy, translation, or reproduction of part of this  
c
manual without written permission is forbidden. Copyright  
2005 SEIKAKU GROUP  
NF01202-2.3  
 

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