apart CONCEPT 1 Professional Integrated Amplifier Instruction Manual

CONCEPT1(T)
Instruction manual

CONCEPT1(T) Manual

Safety Instructions

• Please check the carton box for any kind of damage to the reception of the goods. In case of a damaged carton, please contact your dealer before opening the carton.
• !!!! Danger !!!! Exposure to extremely high noise levels may cause a permanent hearing loss. Individuals vary considerably to noise-induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient amount of time. Therefore it is recommended that all persons exposed to equipment capable of producing high sound pressure levels, such as this amplifier, be protected by hearing protection while installing or operating this unit.
•  Read all documentation before operating your equipment.
• Keep all documentation for future reference.
• Save the carton and packing material even if the equipment has arrived in good condition.
• Should you ever need to ship the unit, use only the original factory packing?
• Do not spill water or other liquids into or on the unit.
• Make sure power outlets conform to the power requirements listed on the back of the unit.
• Do not use the unit if the electrical power cord is frayed or broken.
• Have gain controls on amplifiers turned down during power-up to prevent speaker damage if there are high signal levels at the inputs.
• Do not connect the inputs/outputs of amplifiers or consoles to any other Voltage source, such as a battery, mains source, or power supply, regardless of whether the amplifier or console is turned on or off.
• Power down & disconnect units from mains Voltage before making connections.
• Do not use the unit near stoves, heat registers, radiators, or other heat producing devices.’
• Do not operate equipment on a surface or in an environment that may distort the normal flow of air around the unit. If the unit is used in an extremely dusty or smoky environment, the unit should be periodically “blown free” of dust.
• Do not remove the cover. Removing the cover will expose you to potentially dangerous Voltages.
• Do not drive the inputs with a signal level higher than that required to drive equipment to full output.
• Do not run the output of any amplifier back into another input
• In case of malfunction, this device should be serviced by qualified service personnel only.

4 Integrated amplifiers
Main features

• 3 basic operating modes combined in 1 device: stereo, linked mono, and individual mono.
• Paging microphone input with 2 zones programmable paging control.
• Standalone and/or RS232 controlled operation.
• Removable 19-inch rack ears.
• Menu-driven hidden configuration is accessible for installers only.
• Lockable front panel controls.
• Super simple no-nonsense user interface.
• Multi-functional stylish blue color dot matrix VFD display.
• Presettable paging mic gain and separate tone control.
• Integrated switchable highpass filter for use with optional subwoofers.
• Separate line out and pre-out (fixed and variable line outs).
• 4 stereo gain adjustable line inputs with additional link out on input 1.
• Line 4 input also available as a standard minijack in on the frontpanel for connection of personal audio devices.
• Programmable maximum microphone and music levels for all zones.
• Switchable automatic loudness compensation.
• 2 zone paging microphone optionally available.
• Low impedance (Concept 1) and 100 Volt speaker line outputs (Concept 1T) available.
• Integrated limiter circuit.
• IR remote control is optionally available.
• IR control extender is optionally available.
• 2 x 60 watts freely assignable RMS output power at your disposal.

Integrated amplifiers
Front panel and display layout

1. Power on/off button: push this button to turn the power on and off
2. Source A selector: push this button to select line source A
3. Source B selector: push this button to select line source B
4. Source C selector: push this button to select line source C
5. Source D selector: push this button to select line source D
6. Source D minijack input: this line input is shared with the source D connector at the rear
7. Select button: push this button to select basic submenus
8. Multifunctional encoder knob: turn this knob to adjust the main volume and other menu parameters
9. Stand-by led: this led is lit when the unit is powered off by RS232 control
10. Infrared receiver
11. Multifunctional dot matrix VFD display

Rear panel layout

1. Microphone input: connect your (paging) microphone on this euro block connector, connect the signal on +, -, the screen on GND. Connect the eventual paging contacts between GND and Z1 (for zone 1) and between GND and/or Z2 (for zone 2). The input gain can be adjusted with knob 2 between line and mic level to avoid distortion.
2. Mic input gain control: mic input gain adjust
3.  Mic input tone control: adjust the tone of the mic input between dark and bright
4. Link output: the signal here is a copy of the line A input signal
5. Line A: stereo line RCA connector
6. Line B: stereo line RCA connector
7. Line C: stereo line RCA connector
8. Line D: stereo line RCA connector, a mini-jack version of the line D input is available on the front panel. Only use one of the two inputs at the same time.
9. Pre-amp out: these RCA connectors offer a line-level signal, after the master volume, but before the limiter. For details, please take a look at the block diagram on page 7.
10. Line out: these RCA connectors carry the line-level signal after passing the volume control and limiter circuit. This is an ideal way to connect to active subwoofers or extra power amplifiers
11. Lo-cut right channel/zone 2: when this button is pushed, the signal to the internal power amplifier reduces the sub-bass frequencies for driving small-sized top speakers. It works ideally in combination with subwoofers
12. Right channel/zone 2 output: use this euro block connector to connect your right/zone 2 speakers, minimum load impedance is 4 Ohm (167 Ohm for T version)
13. Lo-cut left channel/zone 1: when this button is pushed, the signal to the internal power amplifier reduces the sub-bass frequencies for driving small-sized top speakers. It works ideally in combination with subwoofers
14. Left channel/zone 1 output: use this euro block connector to connect your left/zone 1 speaker, minimum load impedance is 4
15. IR jack: connect the optionally available IR remote receiver on this minijack connector: Sleeve =GND, ring = data, tip = +5VDC. Once this receiver is connected, the IR receiver behind the front panel is bypassed.
16. RS232: 9 pin sub D connector for connection of computers or other automated audio system controllers
17. Ac input: plug in the supplied mains cable here. Check your mains Voltage first !

CONCEPT1T Version

1. lo-cut Right channel/zone 2: switch not available
2. Right channel/zone 2 output on euro block connector: minimum load impedance: 167 Ohm or 60 watts/100 Volt
3. lo-cut Left channel/zone 1: switch not available
4. Left channel/zone 1 output on euro block connector: minimum load impedance: 167 Ohm or 60 watts/100 Volt

User Operation
The table below shows the 3 possible operating modes: stereo, 2 separate mono zones with one linked music volume control, and 2 separate mono zones with individual music volume control. You can adjust the volume by turning the large rotary control from -80 dB (lowest) to 0 dB (highest). Volume adjustment is the default parameter assigned to the rotary control. In order to enter the menu, press the select button next to the large rotary control.
Example in stereo operating mode: press the select button once to show the first editable parameter, VOL appears in the display.
Push the select button a second time to adjust the microphone level, MIC appears in the display.
Push the select button a third time to adjust treble tone control, TREB appears in the display.
Push the select button a fourth time to adjust bass tone control, BASS appears in the display.
Push the select button again, EXPERT appears in the display. This menu is not allowed for the user. Push the select button again to return to VOL or wait a few seconds, the display will jump back to VOL automatically.

Expert Operation

In order to edit the EXPERT parameters, push select repeatedly until “EXPERT” appears in the display. Then press the SELECT’ and theSOURCE D’ button. A hidden menu structure is now available and gives you the opportunity to edit several parameters, such as operating mode, maximum music level, and so on. The table shows the entire menu structure. The menu tree is also printed on top of the Concepct1 unit and should need no further explanation. To leave the EXPERT mode: press SELECT’ and theSOURCE’ button simultaneously. In the EXPERT mode, if there is no action for 1 minute, the unit will auto return to USER mode.
RS232 & IR Information
Please check our website for the latest information on RS232 and IR communication: Concept1 RS232 Manual Concept1 IR Manual
Block diagram

Accessories

transformers to change 1 or 2  channels of the CONCEPT1 into 100 Volt line outputs.

ERROR conditions

unit near the power switch. For qualified personnel only.
No power, unit is  very hot| No display| Power off the unit, wait for cool down, and power on again.
No sound| Amp error| Switch power off and on again, if the error is not solved, check amp fuses on the main PCB and replace if necessary. For qualified personnel only.
Overheated| High temp| Wait for cool down, reduce volume and check speaker loads.

Only for concept1t version

No sound| Amp error| Check if the environment temperature is within the operating range of the unit (0° – 40°C).
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If any of these fault conditions occur, please unplug the power cord first, check your speaker lines, remove overloads.

Technical Specifications

CONCEPT 1

screw terminals

Digital control

Inputs / outputs

source inputs A-B-C-D input impedance/sensitivity| 15 ohm / 0.3 V -10 dBV, max 2.7 V +8.5 dBV
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source inputs A-B-C-D digital preset gain range| -20 / +14 dB
source digital tone control| bass 90 Hz, treble 15 kHz, +/- 14dB
automatic loudness| +6 dB (90 Hz) / +4 dB (15 kHz)toflat 0 dB
micro balanced input impedance / sensitivity| 1.5 kohm / 1.5 MV -56 dBV,max 0.4 V-8 dBV
micro balanced input rear panel gain trim| -56 / -16 dBV mic – line
micro tone control; rear panel LO – HI| 100 Hz / +3 dB, 10 kHz / -6 dB to
100 Hz / -9 dB, 10 kHz / +4dB
pre-out impedance / sensitivity| 1 kohm / 0 dBV
line-out impedance / sensitivity| 1 kohm / +3 dBV

general

physical specifications

net dimensions (w x h x d) mm| 430 (without rackears) x 88 x 290 (320 including knobs)
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gross dimensions (w x h x d) mm| 530 x 380 x 170
net weight| 6.6 kg
gross weight| 7.6 kg

CONCEPT 1T (100-volt output version)

all specs same as above, except;|
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RMS program power, both channels are driven, 167 ohm / CH,| 60 W / 100 volt + 60 W / 100 volt
net weight| 8.2 kg
gross weight| 9.2 kg

developed by
Audioprof NV
Industriepark Brechtsebaan 8 bus 1
2900 Schoten – Belgium
Company names, product names, and trademarks are the property of their respective owners.
Apart-Audio specifications are subject to change without notice

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