Deaf Bonce MLA-70.2 XS Machete Two Channel Amplifiers Owner’s Manual

: June 13, 2024
: Deaf Bonce

Table of Contents

MLA-70.2 XS Machete Two Channel Amplifiers
Product Information:
Product Usage Instructions:
Wiring Diagrams:

MLA-70.2 XS Machete Two Channel Amplifiers

Product Information:

The MLA-70.2 XS and MLA-150.2 XS are two-channel amplifiers
produced by Deaf Bonce. These amplifiers belong to the class D
category, which ensures extremely loud sound systems with no loss
of quality. The operating voltage for these models is 9-15V.

Key Features:

Power RMS 4 Ohm: 70 x 2 (MLA-70.2 XS), 150 x 2 (MLA-150.2
XS)
Power RMS 2 Ohm: 100 x 2 (MLA-70.2 XS), 225 x 2 (MLA-150.2
XS)
Power RMS 4 Ohm bridged mode: 200W (MLA-70.2 XS), 450W
(MLA-150.2 XS)
High pass filter: 40Hz – 400Hz
Low pass filter: 40Hz – 400Hz
Crossover: 12dB/Oct
Bass level adjustment: dB at 45Hz
Frequency response: 20Hz – 20,000Hz
Input sensitivity: 0.4V – 8V
Signal to noise ratio: 85dB
Damping factor: 180
Integrated Fuse: No

Size (LWH): MLA-70.2 XS – 138mm x 83.1mm x 35.3mm, MLA-150.2 XS
– 138mm x 83.1mm x 35.3mm

*RMS Power at 14.4V, THD 1%

Product Usage Instructions:

Wiring Diagrams:

Standard wiring diagram of two-channel amplifier to two
speakers:

Connect the speaker cable from (+) terminal of the amplifier to
(+) terminal of the speaker.
Connect the speaker cable from (-) terminal of the amplifier to
(-) terminal of the speaker.
Repeat the installation sequence (Step 1 and Step 2) for each
speaker.

Note: The minimum permissible connection load
impedance at every single channel is 2 Ohm.

Standard wiring diagram of two-channel amplifier to one
subwoofer:

Connect the speaker cable from (+) terminal of the amplifier to
(+) terminal of the subwoofer.
Connect the speaker cable from (-) terminal of the amplifier to
(-) terminal of the subwoofer.

Note: The minimum permissible connection load
impedance for bridged connection is 4 Ohm.

Standard wiring diagram of two-channel amplifier to Head
Unit:

Connect one end of the RCA cable to the RCA output terminals at
the HU.
Connect the second end of the RCA cable to the amplifier RCA
inputs terminals marked with INPUT.

Note: The simultaneous operation of LPF (Low
Pass Filter) and HPF (High Pass Filter) is not supported.

Caution: Please ensure to follow the specified
minimum permissible load impedance for each connection type.

TWO-CHANNEL AMPLIFIERS

MLA-70.2 XS MLA-150.2 XS HTTPS://ALPHARD.AUDIO

CLASS D

Warranty period, after-sales service and service life information

Thank you for purchasing of 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’s in this manual. Please keep the manual in a safe and accessible place for future reference.
1. Before installing the amplifier disconnect the battery from the electrical system. 2. 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) 3. 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. 4. 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). 5. Route all signal cables next to each other and separately from the power cables. 6. Connect the wires of RCA input. The input signal power must be between 0.4 V and 8 V. 7. To connect the power wire supply is necessary to use special power cables. 8. 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 to the metal it can lead to distorsions at the signal outputs. 9. 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. 10. To activate the amplifier, it is necessary to apply the positive potential of 12 volts to the control input of the amplifier (REM IN) through a switch or a corresponding control output (REMOTE OUT) with the head unit (HU). 11. LED indicator on 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. 12. 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.

EN 5. 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 CH1 / C 2, 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, 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 RCA cable.
Standard wiring diagram of two-channel amplifier to two speakers.
Step 1. Connect the speaker cable from (+) terminal of the amplifier to (+) terminal of the speaker. Step 2. Connect the speaker cable from (-) terminal of the amplifier to (-) terminal of the speaker. Step 3. Repeat the installation sequence Step 1 and Step 2 for each speaker.

2-8 Ohm

Caution!!! The minimum permissible connection load impedance at every single channel is 2 Ohm. For models MLA-70.2 XS, MLA-150.2 XS the operating voltage is 9-15V.
4

Standard wiring diagram of two-channel amplifier to one subwoofer Step 1. Connect the speaker cable from (+) terminal of the amplifier to (+) terminal of the subwoofer. Step 2. Connect the speaker cable from (-) terminal of the amplifier to (-) terminal of the subwoofer.
min. 4 Ohm Caution!!! The minimum permissible connection load impedance for bridged connection is 4 Ohm.
For models MLA-70.2 XS, MLA-150.2 XS the operating voltage is 9-15 V. Standard wiring diagram of two-channel amplifier to battery Step 1. Connect one end of the power cable from (+) terminal of the battery and the second end to the amplifier terminal marked with +12V. Do not forget to protect positive power cable with appropriate fuse. Step 2. Connect one end of the power cable from (-) terminal of the battery and the second end of the grounding cable to the terminals marked with GND. Step 3. 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.
not more than 40 cm
Standard wiring diagram of two-channel 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 inputs terminals marked with INPUT.

1

23

4

5

6

78 9

Connection of terminals
1
2

1. FREQ high pass or low pass filter frequency adjustment (40-400Hz at 12 dB/Oct) 2. CROSSOVER selection of built-in filters operating mode (HPF, FLAT, LPF) 3. GAIN input signal level adjustment (0.4 – 8 V) 4. INPUT signal input, RCA jacks 5. POWER / PROTECT LED for operation (blue) / LED for protection (red) 6. 1 / 2 speakers connection terminals 7. +12V power supply terminal (+12V) 8. REM IN connector of remote activation of the amplifier 9 GND grounding supply terminal «-».
The minimum permissible load impedance at the single channel is 2 Ohm, in bridged mode 4 Ohm.

Voice coil
4 Ohm 8 Ohm

Total impedance
8 Ohm 16 Ohm

Voice coil
4 Ohm 8 Ohm
Voice coil
4 Ohm 8 Ohm

Total impedance
12 Ohm 24 Ohm
Total impedance
16 Ohm 32 Ohm

Voice coil
4 Ohm 8 Ohm

Total impedance
2 Ohm 4 Ohm

Voice coil
4 Ohm 8 Ohm

Total impedance
1.33 Ohm 2.66 Ohm

Voice coil
4 Ohm 8 Ohm

Total impedance
1 Ohm 2 Ohm

Voice coil
4 Ohm 8 Ohm

Total impedance
4 Ohm 8 Ohm

The minimum permissible load impedance at the single channel is 2 ohm, in bridged mode 4 ohm. Use these formulas to calculate the load impedance of various types of connections.

Model

MLA-70.2 XS

Power RMS 4 Ohm (W) Power RMS 2 Ohm (W)

70 x 2 100 x 2

Power RMS 4 Ohm bridged mode* (W) High pass filter (Hz)

200 1 40 – 400

Low pass filter (Hz)

40 – 400

Crossover (dB/Oct)

12

Bass level adjustment (dB at 45 Hz) Frequency response (Hz)

20 – 20 000

Input sensitivity (V) Signal to noise ratio (dB)

0.4 – 8 85

Damping factor

180

Integrated Fuse (Yes/No)

No

Input terminal connection (AWG/ mm²)

4 / 21.2

Output terminal connection (AWG/ mm²)

8 / 8.37

Working voltage (V) The simultaneous operation of LPF and HPF

9-15 No

Minimum permissible load impedance on the single channel (Ohm)

2

Minimum permissible load impedance in bridged mode (Ohm)

4

Size (LWH), mm

138 x 83.1 35.3

Size (LWH), inch

5.43 x 3.27 1.39

*RMS Power at 14.4 V, THD 1%

MLA-150.2 XS 150 x 2 225 x 2 450 1 40 – 400 40 – 400 12 –
20 – 20 000 0.4 – 8 85 180 No 4 / 21.2 8 / 8.37 9-15 No 2 4
151 x 83.1 35.3 5.95 x 3.27 1.39

Deaf Bonce amplifiers are high-quality and technically perfect products. The problems often arise due to improper use, faulty connection of components or lack of power supply of the on-board 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. 2) 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 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. 3) The amplifier turns on but at a high volume it goes in to 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. 4) 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.

9. BOX CONTENTS

EN

1.Amplifier 1 pc. 2.Owner’s manual 1 pc. 3.Warranty card 1 pc. 4.Mounting it1 pc.

10. WARRANTY PERIOD, AFTER-SALES SERVICE AND SERVICE LIFE I N F O R M AT I O N

Each Deaf Bonce product is warranted to be free from defects in materials and workmanship under normal use and service. The warranty period for the product is 12 (twelve) months from the date on which the product is transferred to the consumer (this date shall be deemed to be the date on which the consumer starts using the product). During the warranty period, defective parts will be repaired or replaced at the discretion of the manufacturer provided that there are grounds for doing so under the laws of the consumer’s country. The defective product must be returned to the dealer from whom it was purchased together with the duly filled out warranty certificate, complete, with original packaging. Our company shall not be liable for any damage caused by transportation. Our company shall not be liable for any expenses or lost profits arising out of or in connection with the use or inability to use the product or any other incidental or indirect costs, expenses, or damages incurred by the customer. The warranty is valid in accordance with the laws currently in force. For more information, please visit our company website and refer to the warranty card. The manufacturer reserves the right to change the design and specification of the product without prior notice. The service life of the product is 12 (twelve) months from the date on which the product is transferred to the consumer (this date shall be deemed to be the date on which the consumer starts using the product). The product or any part (component) of the product must not be used in any way (including, but not limited to use for intended or any other purpose, transportation, storage, modification/alteration/improvement/upgrade) after the expiry of the service life. At the end of its service life, the product must be disposed of.

11. INFORMATION ON DISPOSAL OF THE ELECTRICAL AND ELECTRONIC EQUIPMENT (FOR THE EUROPEAN COUNTRIES WITH SEPARATE WASTE COLLECTION)

MLA-70.2 XS

MLA-150.2 XS

RU

,

4 8

9. , . , , . 12 21 , .
. + . , . . .
10. , (REM IN) +12 , (REMOTE OUT) (). 11. LED , . « » . 12. 3/4 ; , , .

,
. 1. (+) (+) . 2. (-) (-) . 3. 1 2 .

2-8 O

!!! – 2 . MLA-70.2 XS, MLA-150.2 XS 9-15 .

15

RU
1. (+) (+) . 2 . (-) (-) .
. 4
!!! – 4 . MLA-70.2 XS, MLA-150.2 XS 9-15 .
1. (+) , , +12V. . 2. (-) , , GND. 3. Remote , , REM IN.
1. RCA RCA , RCA , INPUT.
16

1

23

4

5

6

78 9

1
2

1. FREQ (40-400 12 /) 2. CROSSOVER (HPF, FLAT, LPF) 3. GAIN (0,4 – 8 ) 4. INPUT , RCA 5. POWER / PROTECT () / () 6. 1 / 2 7. +12V (+12) 8. REM IN 9. GND «-»
2 , 4 .

2 , 4 . .

RMS 4 () RMS 2 () RMS 4 * () () () (/) ( 45 ) () () / ()

MLA-70.2 XS 70 x 2 100 x 2 200 1
40 – 400 40 – 400
12 20 – 20 000 0,4 – 8 85

180

(/)

(AWG/²)

4 / 21,2

(AWG/²)

8 / 8,37

()

9-15

()