citronic H3200 Hybrid Class H Power Amplifier User Manual

citronic H3200 Hybrid Class H Power Amplifier

Product Information

H3200 Hybrid Class-H Power Amplifier

The Citronic H3200 power amplifier is designed to offer high power output in a compact, lightweight form factor. It uses hybrid class-H architecture and has a standard operating mode of STEREO, with each input feeding its relevant speaker output. The amplifier has a MODE switch (10) on the rear panel to determine the way it operates, indicated by LEDs above the switch. It also has a SENSITIVITY switch (11) with three settings for different input levels and an LF PROCESSING switch (18) for a 2dB boost of around 100Hz for enhanced bass response. The CROSSOVER switch (19) can filter out higher frequencies when using the amplifier with a subwoofer cabinet.

Product Usage Instructions

1. Connect each signal input from a mixer or other line-level source via XLR or 6.3mm jack connectors to the combo connectors (9, 12) on the rear panel using good-quality signal leads. Depending on the output level of the mixer, select the appropriate sensitivity on the rear panel.
2. Wiring connections for balanced or unbalanced inputs are as follows:
   • Connector type: 6.3mm jack
   • Signal hot + Tip: Pin 2
   • Signal cold Ring: Pin 3
   • Ground (GND): Sleeve Pin 1
   • Unbalanced wiring: Ring + Sleeve combined Pin 3 + Pin 1 combined
3. Each channel input also has a corresponding XLR line output (17, 20) for linking onto further equipment, as necessary. XLR inputs and outputs for each channel are wired in parallel, allowing the signal to be carried forward to further amplifiers.
4. Connect the amplifier to a mains supply (15), ensuring the IEC lead is earthed, in good condition, and connected securely.
5. With Channel 1 + 2 controls (2, 6) turned fully down, switch on the power to the amplifier (7). This unit has a soft-start function which makes some checks before engaging power to the amplifiers, which may take a few seconds.
6. If using the H3200 amplifier with a subwoofer cabinet, switch the CROSSOVER switch (19) to 120Hz to filter out higher frequencies and enable the amplifier to focus all of its energy on the sub-frequencies. The normal setting is OFF.
7. When set to ON, the LF PROCESSING switch (18) provides a 2dB boost of around 100Hz for enhanced bass response.
8. The rear panel has a MODE switch (10) that determines the way the amplifier operates, indicated by LEDs above the switch. The standard operating mode is STEREO, with each input feeding its relevant speaker output. PARALLEL mode sums both inputs together in mono so that each amplifier channel receives a mix of both inputs.

Please read the manual carefully before operating and follow the instructions to achieve the best results from your amplifier and avoid damage through misuse. Make sure to place the amplifier in a safe and secure location and clean it regularly. Damage caused by misuse is not covered by the warranty.

Introduction

Thank you for choosing a Citronic H3200 power amplifier as part of your sound reinforcement system. These amplifiers use hybrid class-H architecture to offer high power output in a compact, lightweight form factor. Please read this manual fully and follow the instructions to achieve the best results from your amplifier and to avoid damage through misuse.

Warning

• To prevent the risk of fire or electric shock, do not expose any of the components to rain or moisture.
• If liquids are spilled on the casing, stop using it immediately, allow the unit to dry out, and have checked by qualified personnel before further use. Avoid impact, extreme pressure, or heavy vibration to the case.
• No user-serviceable parts inside – Do not open the case – refer all servicing to qualified service personnel.

Safety

• Check for the correct mains voltage and condition of the IEC lead before connecting to a power outlet.
• Ensure speaker leads are in good condition with no shorted connections or damaged plugs.
• Check that the impedance of speaker loads do not exceed the minimum stated load for the amplifier.
• Do not allow any foreign objects to enter the case or through the ventilation grilles.

Placement

• Keep out of direct sunlight and away from heat sources.
• Keep away from damp or dusty environments.
• When rack-mounting, ensure adequate support for the base of the amplifier and firm fixings for the front.
• Ensure adequate airflow and do not cover cooling vents at the front and rear of the amplifier.
• Ensure adequate access to controls and connections.

Cleaning

• Use a soft cloth with a neutral detergent to clean the casing as required.
• Use a vacuum cleaner to clear ventilation grilles of any dust or debris build-ups.
• Do not use strong solvents for cleaning the unit.

Front Panel

1. Cooling vent – do not cover or obstruct
2. Channel 1 level
3. Channel 1 indicator LEDs
4. LCD status display
5. Channel 2 indicator LEDs
6. Channel 2 level
7. Power on/off switch
8. Mains fuse holder
9. Channel 2 line input (XLR/jack)
10. Mode switch – Parallel/Stereo/Bridge
11. Input sensitivity switch 1.0V/1.4V/2.0V
12. Channel 1 line input (XLR/jack)
13. Channel 2 speaker output (SPK)
14. Channel 1 (& Bridge) speaker output (SPK)
15. IEC mains power inlet
16. Cooling vents – do not cover or obstruct
17. Channel 2 line output (XLR)
18. LF enhancer on/off switch
19. Crossover 120Hz LPF on/off switch
20. Channel 1 line output (XLR)
21. Channel 2 speaker output (4mm posts)
22. Channel 1 (& Bridge) speaker output (4mm posts)

Operation

Connect speaker cabinets to channel outputs using good quality Speakon® leads (13, 14) or alternatively with bare wire connection or 4mm plugs (21, 22) and ensure that the combined load on each channel is no lower than 2Ω. For speaker loads connected in parallel… 1/speaker impedance + 1/speaker impedance… = 1/TOTAL impedance. Therefore…

• 8Ω + 8Ω = 4Ω total
• 4Ω + 4Ω = 2Ω total
• 8Ω + 8Ω + 8Ω + 8Ω = 2Ω total

The rear panel has a MODE switch (10), which determines the way that the amplifier operates, indicated by LEDs above the switch. The standard operating mode is STEREO, with each input feeding its relevant speaker output.

PARALLEL mode sums both inputs together in mono so that each amplifier channel receives a mix of both inputs. Also, both channels can be combined to drive a single load at higher power by selecting BRIDGE mode. In this mode, the input is on channel 1 and the output is from the OUT 1 speaker connections as indicated on the rear panel (Speakon connection should be wired to pins 1+ and 2-) WARNING – The minimum load for BRIDGE mode is 4Ω. Below the MODE switch is a SENSITIVITY switch (11), which has 3 settings for different input levels. The standard setting is 1.0V and further settings for 1.4V and 2.0V higher level inputs will reduce the input sensitivity.
When set to ON, the LF PROCESSING switch (18) provides a 2dB boost of around 100Hz for enhanced bass response. If using the H3200 amplifier with a subwoofer cabinet, switching the CROSSOVER switch (19) to 120Hz will filter out higher frequencies to enable the amplifier to focus all of its energy on the sub-frequencies. The normal setting is OFF. Connect each signal input from the mixer or other line-level source via XLR or 6.3mm jack connectors to the combo connectors (9, 12) on the rear panel using good-quality signal leads. Depending on the output level of the mixer, select the appropriate sensitivity on the rear panel. Wiring connections for balanced or unbalanced inputs are as follows…

Connector type| Signal hot +| Signal cold –| Ground (GND)| Unbalanced wiring
---|---|---|---|---
6.3mm jack| Tip| Ring| Sleeve| Ring + Sleeve combined
XLR| Pin 2| Pin 3| Pin 1| Pin 3 + Pin 1 combined

• Each channel input also has a corresponding XLR line output (17, 20) for linking onto further equipment, as necessary.
• XLR inputs and outputs for each channel are wired in parallel, allowing the signal to be carried forward to further amplifiers.
• Connect the amplifier to a mains supply (15), ensuring the IEC lead is earthed, in good condition, and connected securely.
• With Channel 1 + 2 controls (2, 6) turned fully down, switch on the power to the amplifier (7). This unit has a “soft-start” function which makes some checks before engaging power to the amplifiers, which may take a few seconds.
• With a mixer (or another signal source) levels turned down, gradually increase the amplifier’s channel level controls to the required level (normally full) and then gradually increase the signal level from the mixer or sound source until the sound can be heard through the speakers and then continue increasing up to the required level.
• The LED indicators for each channel (3, 5) are as shown opposite.
• In normal operation, the POW indicators will be on and the SIG indicators will light when an input signal is present.
• If the input signal is overloading the amplifier, this “clips” above the available power limit.
• When this happens, the CLIP indicators will light.
• It is acceptable for CLIP indicators to flash very briefly in response to loud peaks in the audio signal.
• However, if they light for any longer than a brief instant or very frequently, the input level should be reduced or channel level controls on the front panel should be turned down until the regular clipping is eliminated.
• If the internal protection circuitry detects a fault in the speakers or amp, the channel(s) will enter protect mode and PRO will illuminate on the front panel to show this. Switch the amplifier off and check the entire system (including speaker leads) before powering up again. If still in Protect Mode, seek advice from qualified service personnel.

Each H3200 amplifier also has a backlit LCD display (4) on the front panel with the following information for monitoring.

• Mains supply voltage
• The internal temperature of each amplifier channel
• VU signal meters for each channel
• Fan speed

Before powering down, turn the channel gain controls fully down to avoid loud noises when switching off.

Specifications

inrush limiting.
Frequency response| 20Hz-20KHz ±0.5dB
Crossover| Switchable 120Hz Low Pass subwoofer filter
THD +N| 0.20%
S/N ratio| -95dB
Damping factor| >700
Input sensitivity| 1.0V – 1.4V – 2.0V switchable
Input impedance| 20KΩ (balanced),10KΩ (unbalanced)
Dimensions| 483 x 361 x 88 mm (1U)
Weight| 8.9kg

• Testing @ 2Ω under 40ms burst, 1kHz sine wave (1.0% THD)

Troubleshooting

No power light on either channel| Ensure the IEC inlet is connected to the mains and the lead is in good condition
---|---
Ensure the mains outlet is switched on
Power lights are on but no other LEDs and no output| Check input signal and connection leads
Ensure channel gain controls are not turned fully down
The power light and Signal LEDs are lit but no output| Check speaker cabinets are in good working order
Check speaker leads are in good condition and connected properly

PROTECT LED is lit and there is no output

| Switch off and disconnect from the mains
Check speakers are in good working order and not shorted out (using a multi- tester)
After checking all connected items, power up again
If still in Protect Mode, switch it off again and refer to qualified service personnel
Ensure cooling vents are clear and the amplifier is not overheated
Output is very distorted and “CLIP” LEDs

are lighting

| Check the speaker impedance is not below 2Ω per channel (4Ω if bridged)
Turn down the input level from the audio source
Turn down channel gain controls

Output is working but at a very low level

| Ensure the input source is at line level
Switch the SENSITIVITY to a lover voltage
Increase input level from the audio source
Turn up channel gain controls

Disposal: The “Crossed Wheelie Bin” symbol on the product means that the product is classed as Electrical or Electronic equipment and should not be disposed of with other household or commercial waste at the end of its useful life. The goods must be disposed of according to your local council guidelines.

Errors and omissions excepted. Copyright© 2022. AVSL Group Ltd. Unit 2-4 Bridgewater Park, Taylor Rd. Manchester. M41 7JQ AVSL (EUROPE) Ltd, Unit 3D North Point House, North Point Business Park, New Mallow Road, Cork, Ireland

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