Hortus AP Series User manual

AMPLIFIERS AP SERIES OWNER’S MANUAL
HORTUS AUDIO - FRANCE - www.hortusaudio.eu - [email protected] - +33.(0)4.67.27.43.05
AP2: 2-CHANNEL SERIES
AP2-140 - AP2-280 - AP2-500 - AP2-800 - AP2-3000
AP4: 4-CHANNEL SERIES
AP4-140 - AP4-280 - AP4-500 - AP4-800
HORTUS AUDIO

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1. Welcome:
Welcome to use AP series professional audio power amplifier. For your safety, please read
the caution before installing and operating the power amplifier.
AP series professional power amplifier has a stable circuit and reasonable cooling layout and
the carefully selected components, concise manufacturing process, long time burning test to
ensure that the amplifier has an excellent performance and reliability.
2. Features:
1. Power supply design (85-265 VAC)
Each unit contains a set of logical power. Adjust the power output level voltage through the
logic power supply real-time dynamic control circuit and can real-time dynamically adapt to
the signal and load equipments, which can achieve the optimal power matching under the
wide load conditions and ensure the amplifier will not overheat.
2. Professional Speakon socket suit for the engineering and touring performance.
3. Adopt the precision CNC lathes to stamp the integrated steel plate to make the
structure extremely strong and be able to withstand the maximum transient pressure
without deformation.
4. XLR balanced input and output.
5. Cooling systems:
The cooling system is using the wind tunnel type, seal gas flow pass can strengthen the coo-
ling effect and avoid the fault which cause by PCBA pollution which caused by the stage
dust and smoke. Ensure when the unit is under the normal work conditions, the tempera-
ture can reach balance within a certain range.
6. Perfect interface:
Signal input: XLR input/signal parallel output.
Horn output: speakon professional output socket.
CONTENT:
Introduction................................................................................................................2
Welcome ...............................................................................................................2
Features.................................................................................................................2
Safety operation........................................................................................................3
Operation..............................................................................................................3
Technical specifications
2-channel series ...................................................................................................4
4-channel series ...................................................................................................5
Main operation keys & Functions
Front panel ...........................................................................................................6
Rear panel.............................................................................................................7
Connection Modes
2-channel series ...................................................................................................8
4-channel series ...................................................................................................9
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Safety Operation
1. This amplifier only can plug in the AC power socket which the user’s manual instructs or
the specification is shown on this adaptater. Or else it may damage the amplifier and cause
a fire or electric shock.
2. Do not place heavy objects (including this amplifier) on the power cord and then cause an
electric shock or fire.
3. Do not expose the amplifier in the fume, high humidity, high temperature and dust
accumulation place and use.
4. Do not put this amplifier sidelong or upside down, use it in a good air flow environment.
5. When abnormity happen in the operation process, such as smoke, odor, noise, or foreign
bodies, liquid entering into the amplifier, please turn off the amplifier immediately and
unplug the socket from the AC power socket.
6. When abnormity happen, please don’t open the chassis and rebuilt or repair the amplifier
by yourself, if the internal is sure to need repair and maintenance, please contact the dealers
to deal with it.
Operation:
1. When the speaker is connected to the amplifier output socket, it only can use the speaker
special cable and connect it in accordance with the provisions.
2. When connect the amplifier, please close all the instruments, audio equipments and
speakers.
3. before turning on the amplifier, please turn down the volume at the minimum.
4. If you do not use this amplifier for a long time, please unplug the power cord from the AC
mains socket.
5. When unplug the power plug from the AC power socket, please grasp the plug. Do not
directly pull the cable. Otherwise it can damage the power cord and the lead to a fire or
electric shock.
HORTUS AUDIO - FRANCE - www.hortusaudio.eu - [email protected] - +33.(0)4.67.27.43.05
This equipment can create high sound levels.
Exposure without adequate protection
could cause permanent damage to hearing.

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AP2 SERIES
2-CHANNELS AP2-140 AP2-280 AP2-500 AP2-800 AP2-3000
SE MODE
CH1 + CH2
RL:
4 Ω2 x 140 W 2 x 280 W 2 x 490 W 2 x 810 W 2 X 3000 W
RL:
8 Ω2 x 140 W 2 x 280 W 2 x 245 W 2 x 410 W 2 x 1500 W
RL:
2 Ω- - - 2 x 900 W 2 x 1500 W
BTL MODE
RL:
4 Ω 140 W 280 W 1050 W 1400 -
RL:
8 Ω 140 W 280 W 900 W 1500 -
70 V
RMS 140 W 250 W 1000 W 1500 -
100 V
RMS 120 W 240 W 1000 W 1500 -
Damping Factor
(8Ωload)
> 225
(1 kHz)
> 350
(1 kHz)
> 1000
(1 kHz)
>350
(1 kHz)
>400
(20 - 500Hz)
Output Circuitry Class D - full bandwidth PWM modulator
with ultra low distortion -
Signal To Noise-Ratio
(20 Hz - 20 kHz,
8Ωload)
> 119 dB > 120 dB > 119 dB -
THD+N (typical) < 0.05 % (20 Hz - 20 kHz, 8Ωload, 3 dB below rated power)
Frequency
Response 20 Hz - 20 kHz (+0/-0.25 dB, 8Ωload, 3 dB below rated power) -
Protection Short circuit protection, DC protection, under voltage protection,
temperature protection, overload protection
Turn-on transients,
Over-heating, DC,
RF, Short-circuit,
mismatched loads,
ICL™, PMS™
Operation
Voltage 85 - 265V
Dimensions (mm)
446,5 x 360,50 x 88
A vertical rack space of 2U (88mm high) is required,
with an in rack depth of 17.58 inches (446,5mm).
HORTUS AUDIO - FRANCE - www.hortusaudio.eu - [email protected] - +33.(0)4.67.27.43.05
TECHNICAL SPECIFICATIONS

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AP4 SERIES
4-CHANNELS AP4-140 AP4-280 AP4-500 AP4-800
SE MODE
CH1 + CH2
RL:
4 Ω4 x 140 W 4 x 280 W 4 x 490 W 4 x 810 W
RL:
8 Ω4 x 140 W 4 x 280 W 4x 245 W 4 x 400 W
RL:
2 Ω- - - 4 x 900 W
BTL MODE
RL:
4 Ω 2 x 140 W 2 x 280 W 2 x 1050 W 2 x 1400
RL:
8 Ω 2 x 140 W 2 x 280 W 2 x 900 W 2 x 1500
70 V
RMS 2 x 140 W 2 x 250 W 2 x 1000 W 2 x 1500
100 V
RMS 2 x 120 W 2 x 240 W 2 x 1000 W 2 x 1500
Damping Factor
(8Ωload)
> 225
(1 kHz)
> 350
(1 kHz)
> 1000
(1 kHz)
>350
(1 kHz)
Output Circuitry Class D - full bandwidth PWM modulator
with ultra low distortion
Signal To Noise-Ratio
(20 Hz - 20 kHz,
8Ωload)
> 119 dB > 120 dB > 119 dB
THD+N (typical) < 0.05 % (20 Hz - 20 kHz, 8Ωload, 3 dB below rated power)
Frequency
Response 20 Hz - 20 kHz (+0/-0.25 dB, 8Ωload, 3 dB below rated power)
Protection Short circuit protection, DC protection, under voltage protection,
temperature protection, overload protection
Operation
Voltage 85 - 265V
Dimensions
446,5 x 360,50 x 88
A vertical rack space of 2U (88mm high) is required,
with an in rack depth of 17.58 inches (446,5mm).
HORTUS AUDIO - FRANCE - www.hortusaudio.eu - [email protected] - +33.(0)4.67.27.43.05
TECHNICAL SPECIFICATIONS

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1. Clip LED: Lights red when amplifier reaches near maximum output and begins to clip the
audio signal. In normal operation the clip indicator should be flashing often during dynamic parts
of the music, this is normal. What is not normal is if the clip indicator is staying lit for long portions
of time, then you need to reduce system volume or gain of the amplifier.
2. TEMP: Lights red when amplifier internal temperature reaches 85° & turn off at 60°.
PROTEC LED: Lights red if there is a problem with the audio system. For example, speaker
wire gets pinched/shorted together, blown a voice coil or running too low of an impedance.
0/+6 (sensitivity mode) / BRIDGE (A+B bridge mode) / STEREO (A+B stereo mode) / LINK (A+B
link mode) LED will light up if you select the corresponding mode by pressing the buttons on the
back of the amplifier.
3. LINK BC: Lights Blue when A+B link to C+D mode (only on 4 channels amplifier series)
4. Power switch: This switches the amplifier on and off.
When turned on, the power LED lights up behind the logo.
Note that the amplifier will only switch the power supply on once it has assured that there are no
internal faults. From the first application of AC power it takes a few seconds to complete these
tests. While the power up sequence is being completed all amplifiers channels are muted.
5. Gain control: Used to set the output level of each channel.
6. The cooling system uses the tunnel type of ventilation and is also isolated
from the electronic part to avoid any external pollution.
Cleaning: the two protective foams on the front of the amplifier can be easily
removed and cleaned when necessary (min 1/Year).
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MAIN OPERATION KEYS & FUNCTIONS
Front Panel
1 2 3 4 6
5
2-channel series
4-channel series

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1. 25Hz Mode: press to activate Subsonic filter 25Hz amplifier mode. Is a HPF (high pass
frequency) filter for subwoofers. A subsonic filter will attenuate frequencies so low that your
subwoofer cannot reproduce them OR that humans are incapable of hearing. Subsonic filter is
also a very important feature for vented enclosures.
2. Bridge Mode: when it is switched on the two amplifier channels are internally connected in
such a way that twice the output power is available. Only the input signal from channel A is ampli-
fied and loudspeakers are connected only to the correspondingly marked output. The volume is
controlled via the control knob for channel A. 4 channel series: turn on C+D switch, the volume is
controlled via the control knob for channel C. Warning in bridge mode +2 HOT / -2 COLD
3. Link Mode: uses multiple amplifiers in parallel, two or more amplifiers operating in-phase into a
common load. In this mode the available output current is doubled but the output voltage remains
the same. The output impedance of the pair is now halved.
4. Sensitivity Mode: 0 dB : normal standard (0.775V) gain switched on 6 dB to double the gain
(1.4V) of sensitivity
5. Link B ->C Mode: only on 4-channel series, switched on to link A+B audio signal with C+D
audio signal
6. Audio Output on speakon female chassis socket (A, B: 2-channel series)
+ (A, B, C, D: 4 channel series) +1 HOT / -1 COLD
Warning in bridge mode +2 HOT / -2 COLD
7. Balanced Signal Input on XLR female chassis socket (A & B: 2 channel series)
+ (A, B, C, D: 4-channel series)
XLR plug (balanced): 1: Ground, shielding, 2: Signal (in phase, +), 3: Signal (out of phase, –),
4: Shielding on plug housing (option)
8. Balanced Signal Output on XLR male chassis socket (A & B: 2-channel series)
+ (A, B, C, D: 4-channel series) Link Mode: uses multiple amplifiers in parallel
XLR plug (balanced): 1: Ground, shielding, 2: Signal (in phase, +), 3: Signal (out of phase, –),
4: Shielding on plug housing (option)
9. AC Power Input: lockable, robust and reliable 3 pole equipment (AC) powercon connector.
HORTUS AUDIO - FRANCE - www.hortusaudio.eu - [email protected] - +33.(0)4.67.27.43.05
MAIN OPERATION KEYS & FUNCTIONS
Rear Panel
5 1 2 3 46
7
8
9
2-channel series
4-channel series

8HORTUS AUDIO - FRANCE - www.hortusaudio.eu - [email protected] - +33.(0)4.67.27.43.05
2-CHANNEL CONNECTION MODES
Stereo connection
Mono connection
Bridge (BTL) connection
A
AB
A
B
A
A
A
Link connection
B
XLR IN: A or B
SPEAKON OUT: A & B
Warning in Bridge Mode
+2 HOT / -2 COLD
X
Do not connect

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4-CHANNEL CONNECTION MODES
Stereo connection
Mono connections
2 x Bridge (BTL) connections
A
B
A
A
AB
CD
D
C
A
A
C
C
C
Link connection
B
D
XLR IN: A or B / C or D
SPEAKON OUT: A & B / C & D
Warning in bridge mode
+2 HOT / -2 COLD
X
X
Do not connect
Do not connect
C
OR