Deaf Bonce MLA-800 790W RMS Machete Series Class-D Monoblock Amplifier Owner’s Manual
- June 4, 2024
- Deaf Bonce
Table of Contents
- INTRODUCTION
- SAFETY INSTRUCTIONS
- TYPICAL INSTALLATION SEQUENCE
- SELECTION OF THE DIAMETER OF POWER CABLES AND SPEAKER CABLES
- WIRING DIAGRAMS
- CONNECTION METHODS
- SPECIFICATIONS
- POSSIBLE FAULTS AND THEIR SOLUTIONS
- BOX CONTENTS
- WARRANTY AND MAINTENANCE INFO
- References
- Read User Manual Online (PDF format)
- Download This Manual (PDF format)
Deaf Bonce MLA-800 790W RMS Machete Series
Class-D Monoblock Amplifier
Owner’s Manual
MONO AMPLIFIERS
INTRODUCTION
Thank you for purchasing this Deaf Bonce product! Our company is committed to the creation of extremely loud sound systems with no loss of quality. To ensure proper use, please carefully read through this manual before using this product. It is especially important that you read and observe caution in this manual. Please keep the manual in a safe and accessible place for future reference.
SAFETY INSTRUCTIONS
- Make sure that your vehicle has a 12V DC electrical system with negative grounding. Before installing the amplifier in cars, trucks or buses, check the battery voltage.
- Check the state of the onboard power supply of your v, vehicle, the battery, and the alternator. When the engine is running, depending on the ambient temperature, the voltage to be outputted by the alternator must be within the range of 14 to 14.7 V. Open circuit voltage (OCV) of the battery must be within the range of 12.5 to 13 V. Make sure that the rated current of the alternator and the battery capacity is enough to provide increased consumption. For example, for the power of the amplifier 1000 W, the rated current of the alternator is required at the rate of 1000 W / 13 V = 77 amperes. A more powerful amplifier requires a more powerful alternator as well as an additional battery.
- Do not place the amplifier in the engine compartment and also in the places exposed to water, moisture, dust or dirt.
- Never stretch the cables outside of the car and near the moving parts of the car. This can lead to the destruction of the insulating layer, short circuit, and fire.
- The amplifier should be installed in areas of the car where the temperature varies from 0 °C (32 °F) to 55 °C (131 °F). The amplifier should be in a place with good air circulation. The horizontal position of the amplifier is the best way to install it.
- During the operation, the amplifier may be heated up to 80 °C (176 °F). Before you touch it, make sure it is not overheated which may be dangerous.
- To improve the cooling of the amplifier, it is recommended to clean periodically the heatsink from dust. When cleaning the heatsink strong solvents should not be used as they may damage the amplifier. Do not use compressed air, because solids can penetrate inside the amplifier. Cleanings are best done with wet towels or cloth.
- Make sure that the location of the amplifier does not violate the proper operation of the mechanical and electrical devices of the vehicle.
- Make sure that during the installation and connection of the battery, the power cables are not shorted.
- When performing plumbing, drilling or cutting works with the car, make sure that there is no wiring, brake lines, fuel pipe or other structural elements under the place of work. Follow the safety rules! Use protective glasses and gloves.
- To protect the wires use rubber gaskets if the wire passes through a hole in the plate, or other similar materials if it lies close to the parts exposed to heat.
- Make sure that all the cables are fixed over the entire length. Also, make sure that their outer protective shell is non-combustible. Use a clamping screw to secure the positive and negative cables next to the appropriate terminals of the amplifier.
- Select the diameter of the power cable in accordance with the power of the amplifier and the recommendations provided here. Power cables are extremely important since they directly affect the system damping factor and sound quality. The cables to the battery must be in the copper crimp terminals pressed with the help of a hydraulic press, and well fixed to the battery terminals.
- To avoid accidental damage, keep the amplifier in its original packaging prior to installation.
- Use high-quality copper speakers and power cables.
CAUTION! High sound pressure can damage your health! Please use common sense when controlling volume!
TYPICAL INSTALLATION SEQUENCE
- Before installing the amplifier disconnect the battery from the electrical system.
- To connect the amplifier it is necessary to stretch the power cable from the location of the battery to the place of installation of the amplifier. Select the power cable with the appropriate regulations in AWG (see Table: Selection of the diameter of the power cables)
- Connect the power supply with the correct polarity. Connect all (+) terminals of the amplifier to the cables stretching from the positive terminal of the battery and all (-) terminals of the amplifier – to the cables stretching from the negative terminal of the battery.
- Place the fuse holder for each positive cable within 40 cm from the positive terminal of the battery and connect one end of the power cable to the holder after connecting the other end to the amplifier. Do not install the fuse(s).
- Route all signal cables next to each other and separately from the power cables.
- Connect the wires of RCA input. The input signal power must be between 0.2 VRMS and 6 VRMS.
- To connect the power wire supply is necessary to use special power cables.
- Fasten the amplifier properly when installing it in the vehicle. If the component is disconnected during driving, it may cause serious damage to the passengers of the vehicle or another vehicle. It is not recommended to screw the amplifier directly into the metal it can lead to distortions at the signal outputs.
- After installation is complete, check the wiring of the system and make sure that all connections have been made correctly. Before installing the fuses, disconnect the positive lead from the battery and then install the fuse in the fuse holder. Using the light bulb 12 V 21 W, connect the positive lead to one contact of the bulb and the other contact of the bulb to the positive terminal of the battery. When properly connected, the bulb must briefly light up and go out. Now you may connect the positive lead to the (+) of the battery. If the light does not go out, then something is wrong. This will prevent damage to the amplifier in case of reverse polarity and unwanted sparks when connecting. Install the rest of the fuses.
- To activate the amplifier, it is necessary to apply the positive potential of 12 volts to the control input of the amplifier (REMIN) through a switch or a corresponding control output (REMOTE OUT) with the head unit (HU).
- The LED indicator on the front of the amplifier turns blue to indicate that the amplifier is turned on. If the indicator does not light up see chapter “Possible faults and their solutions” for more information.
- The sound level is calibrated by adjusting the volume of the source up to 3/4 of its maximum level. Then, adjust the sensitivity level of the amplifier up until you hear distortions.
SELECTION OF THE DIAMETER OF POWER CABLES AND SPEAKER CABLES
Use the table below to select the desired diameter based on the length and the current consumption.| Use the table below to select the desired diameter based on the length and the power consumption.
WIRING DIAGRAMS
Connect the speaker cables from the positive and negative terminals of the
speakers to the respective outputs of the amplifier terminal marked with
SPEAKER OUTPUT, as shown at the diagram. To connect the power wire supply it
is necessary to use. special power cables. The fuse is placed in the holder
and fixed in the cable cut. One end of the cable is connected to the positive
terminal of the battery, and the second one – to the amplifier terminals marked
with + 12V. Be sure to use a fuse with the parameters sufficient for use in the
system. The length and diameter of the grounding cable must conform to the
length and diameter of the cable + 12V. Connect one end to the negative
terminal of the battery and the other end of the grounding cable to the
terminals marked with GND. Connect the head unit (HU) to low-level inputs of
the amplifier using an RCA cable.
Standard wiring diagram of the mono amplifier to one subwoofer and to
battery
Step 1. Connect the speaker cable from the (+) terminal of the amplifier to (+)
terminal of the subwoofer.
Step 2. Connect the speaker cable from the (-) terminal of the amplifier to the
(-) terminal of the subwoofer.
Step 3. Connect one end of the power cable from the (+) terminal of the
battery and the second end to the amplifier terminal marked with + 12V. Do not
forget to protect the positive power cable with an appropriate fuse.
Step 4. Connect one end of the power cable from the (-) terminal of the
battery and the second end of the grounding cable to the terminals marked with
GND.
Step 5. Connect one end of the cable to the Remote output terminal at the HU
and the second end to the amplifier terminal marked with REM IN.
Caution! The minimum permissible connection load impedance is 1 ohm.
For models MLA-800, MLA-1000, MLA-1500the operating voltage is 10-15 V.
Standard wiring diagram of the mono amplifier to head unit
Step 1. Connect one end of the RCA cable to the RCA output terminals at the HU
and the second end to the amplifier RCA input the terminal marked with INPUT.
Application of connectors and controls
- POWER – LED for operation (blue)
- PROTECT – LED for operation (red)
- INPUT – signal input, RCA jacks
- OUTPUT – signal output, RCA jacks
- BRIDGE OUT – signal output for slave amplifier, RCA jack
- BRIDGE IN – signal input from master amplifier, RCA jack
- GAIN – input signal level adjustment (0.2 – 6 V)
- BASS BOOST – bass level adjustment (0 – 18 dB)
- LPF – low pass filter (32 Hz – 300 Hz at 12 dB/Oct)
- SUBSONIC – subsonic frequency filter (10 – 50 Hz at 12 dB/Oct)
- PHASE – phase shifter (0° – 180°)
- REMOTE – input for connection of the bass remote control
- POWER – LED for operation (blue)
- GAIN – input signal level adjustment
- GND – grounding supply terminal «-»
- REM IN – connector of remote activation of the amplifier
- +12V – power supply terminal +12 V
- FUSE – fuse connection terminal
- POWER – LED for operation (blue)
- PROTECT – LED for operation (red)
- SPEAKER OUTPUT – speakers connection terminals
CONNECTION METHODS
The minimum permissible load impedance at the output of the amplifier is 1 ohm.
Use these formulas to calculate the load impedance of various types of
connections.
Serial connection
Total impedance = ΩSub 1 + ΩSub 2 + ΩSub 3 …
Parallel connection
SCHEMES OF ENABLING THE LOAD OF THE SUBWOOFER
In any case, do not expose the amplifier to loads lower than specified by the
manufacturer. Use these schematics to calculate the load impedance of
different connection types.
Voice coils 1+1, 2+2, 4+4 Ohm
The subwoofer has voice coil D1, D2 or D4.
One subwoofer, coils in series
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 2 Ohm |
| 2+2 Ohm | 4 Ohm |
| 4+4 Ohm | 8 Ohm |
One subwoofer, coils in parallel
| Voice coils | Total impedance |
|---|---|
| 1+1 Ом | 0.5 Ohm |
| 2+2 Ом | 1 Ohm |
| 4+4 Ом | 2 Ohm |
Subwoofers in series, coils in parallel
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 1 Ohm |
| 2+2 Ohm | 2 Ohm |
| 4+4 Ohm | 4 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 1.5 Ohm |
| 2+2 Ohm | 3 Ohm |
| 4+4 Ohm | 6 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 2 Ohm |
| 2+2 Ohm | 4 Ohm |
| 4+4 Ohm | 8 Ohm |
Subwoofers in series, coils in series
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 4 Ohm |
| 2+2 Ohm | 8 Ohm |
| 4+4 Ohm | 16 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 6 Ohm |
| 2+2 Ohm | 12 Ohm |
| 4+4 Ohm | 24 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 8 Ohm |
| 2+2 Ohm | 16 Ohm |
| 4+4 Ohm | 32 Ohm |
Subwoofers in parallel, coils in series
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 1 Ohm |
| 2+2 Ohm | 2 Ohm |
| 4+4 Ohm | 4 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 0.66 Ohm |
| 2+2 Ohm | 1.33 Ohm |
| 4+4 Ohm | 2.66 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 0.5 Ohm |
| 2+2 Ohm | 1 Ohm |
| 4+4 Ohm | 2 Ohm |
Subwoofers in parallel, coi ls in parallel
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 0.25 Ohm |
| 2+2 Ohm | 0.5 Ohm |
| 4+4 Ohm | 1 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 0.16 Ohm |
| 2+2 Ohm | 0.33 Ohm |
| 4+4 Ohm | 0.66 Ohm |
| Voice coils | Total impedance |
|---|---|
| 1+1 Ohm | 0.125 Ohm |
| 2+2 Ohm | 0.25 Ohm |
| 4+4 Ohm | 0.5 Ohm |
CAUTION! High sound pressure can damage your health! Please use common sense when controlling volume!
SPECIFICATIONS
| Model | MLA-800 | MLA-1000 | MLA-1500 |
|---|---|---|---|
| Power RMS 4 Ohm* (W) | 340 | 400 | 540 |
| Power RMS 2 Ohm* (W) | 540 | 680 | 920 |
| Power RMS 1 Ohm* (W) | 790 | 990 | 1480 |
| Crossover (dB/Oct) | 12 | 12 | 12 |
| Low pass filter (Hz) | 32 – 300 | 32 – 300 | 32 – 300 |
| Subsonic filter (Hz) | 10 – 50 | 10 – 50 | 10 – 50 |
| Bass level adjustment (dB at 45 Hz) | 0 – 18 | 0 – 18 | 0 – 18 |
| Frequency response (Hz) | 10 – 300 | 10 – 300 | 10 – 300 |
| Input sensitivity (V) | 0.2 – 6 | 0.2 – 6 | 0.2 – 6 |
| Signal to noise ratio (dB) | 89 | 88 | 99 |
| Input terminal connection (AWG / mm²) | 4 / 21.2 | 4 / 21.2 | 0 / 53.5 |
| Output terminal connection (AWG / mm²) | 8 / 8.37 | 8 / 8.37 | 8 / 8.37 |
| Working voltage (V) | 10 – 15 | 10 – 15 | 10 – 15 |
| The minimum permissible load impedance (Ohm) | 1 | 1 | 1 |
| Size (LхWхH, mm) | 325х216х50 | 350х216х50 | 375х216х50 |
| Size (LхWхH, inch) *RMS Power at 14.4 V, THD 1% | 12.8х8.5х1.97 | ||
| 13.78х8.5х1.97 | 14.76х8.5х1.97 | ||
| Low pass filter (Hz) | 32 – 300 | 32 – 300 | 32 – 300 |
| --- | --- | --- | --- |
| Subsonic filter (Hz) | 10 – 50 | 10 – 50 | 10 – 50 |
| Bass level adjustment (dB at 45 Hz) | 0 – 18 | 0 – 18 | 0 – 18 |
| Frequency response (Hz) | 10 – 300 | 10 – 300 | 10 – 300 |
| Input sensitivity (V) | 0.2 – 6 | 0.2 – 6 | 0.2 – 6 |
| Signal-to-noise ratio (dB) | 89 | 88 | 99 |
| Input terminal connection (AWG / mm²) | 4 / 21.2 | 4 / 21.2 | 0 / 53.5 |
| Output terminal connection (AWG / mm²) | 8 / 8.37 | 8 / 8.37 | 8 / 8.37 |
| Working voltage (V) | 10 – 15 | 10 – 15 | 10 – 15 |
| The minimum permissible load impedance (Ohm) | 1 | 1 | 1 |
| Size (LхWхH, mm) | 325х216х50 | 350х216х50 | 375х216х50 |
| Size (LхWхH, inch) *RMS Power at 14.4 V, THD 1% | 12.8х8.5х1.97 | ||
| 13.78х8.5х1.97 | 14.76х8.5х1.97 |
POSSIBLE FAULTS AND THEIR SOLUTIONS
Deaf Bonce amplifiers are high-quality and technically perfect products. The problems often arise due to improper use, the faulty connection of components, or the lack of power supply of the onboard network.
-
The amplifier does not turn on.
Problem solution: Check all the contacts and the presence of 9-15 V at the amplifier terminals. Check whether the control input of the amplifier “REM IN” receives the positive potential of +12 V. -
Power turns on, but goes into protection (protection indicator lights up)
Problem solution: Check if there is a short circuit (fault) on the amplifier output which is connected to the speakers or subwoofers. Make sure that the commutation of the voice coils of the subwoofer is correct. The rated impedance of the voice coils should not be lower than the permissible rated load impedance of the amplifier. Check the supply voltage of the amplifier. It must be within the range of 9-15 V. -
The amplifier turns on but at a high volume, it goes into protection. Problem solution: The amplifier may lack power. Make sure that the rated current of the alternator and the battery capacity is enough to power this amplifier. Check the amplifier for overheating. Check the load impedance.
-
The amplifier is turned on, but there is no sound from the speakers or subwoofer. Problem solution: Check the connection of the amplifier, the integrity of the interconnecting cable, HU, the speakers or the subwoofer.
BOX CONTENTS
- Amplifier – 1 pc.
- Owner’s manual – 1 pc.
- Warranty card – 1 pc.
- Remote control – 1 pc.
- Mounting Kit – 1 pc.
- Window decals – 2 pcs.
WARRANTY AND MAINTENANCE INFO
Deaf Bonce products are warranted against defects concerning materials and
their manufacturing under normal functioning conditions.
While the product is under warranty, defective parts will be repaired or
replaced at the manufacturer’s discretion. The defective product, along with
notification about it, must be returned to the dealer from which it was
purchased together with the warranty certificate duly filled in, complete with
the original packaging. If the product is no longer under warranty, it will be
repaired at the current costs.
Our company does not undertake any liability for damages due to
transportation. Our company does not take any responsibility for: costs or
loss of profit due to the possibility to use the product, other accidental or
consequential costs, expenses or damages suffered by the customer. Warranty
according to laws in force. For more information visit our website and
carefully read the warranty card. The manufacturer reserves the right to
change design and specification without prior notice.
INFORMATION ON DISPOSAL OF THE ELECTRICAL AND ELECTRONIC EQUIPMENT (FOR THE
EUROPEAN COUNTRIES WITH SEPARATE WASTE COLLECTION)
Items marked “crisscrossed wheeled bin” are not allowed to be disposed of
together with usual household waste. These electrical and electronic products
should be disposed of in special reception centers, equipped for recycling
such products and components. For information about the location of the
nearest disposal/recycling spot and the rules of delivery of waste please
contact your local municipal office. Recycling and proper disposal help to
protect the environment and prevent harmful effects on health.
Manufacturer: Ningbo Sound Solution I&E Trading Co., Ltd
Made in China
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https://deafbonce.com/amplifiers/machete-mla-1000|
https://deafbonce.com/amplifiers/machete-mla-800|
https://deafbonce.com/amplifiers/machete-mla-1500
References
Read User Manual Online (PDF format)
Read User Manual Online (PDF format) >>