Machete ML-12R D4 - Subwoofer Deaf Bonce - Free user manual and instructions

Product Type	Subwoofer
Brand	Deaf Bonce
Model	Machete ML-12R D4
Size	12 inches
Impedance	Dual 4 Ohm (2+2 or 4+4 Ohm selectable)
RMS Power	500 W
Max Power	1000 W
Sensitivity (SPL)	88 dB (2+2 Ohm) / 88.2 dB (4+4 Ohm)
Frequency Response (Fs)	38 Hz (2+2 Ohm) / 38.3 Hz (4+4 Ohm)
Voice Coil	2-inch dual voice coil, copper wire
Cone Material	Pressed paper
Surround Material	Foam
Frame Material	Stamped steel
Magnet Type	Ferrite
Xmax (linear excursion)	12 mm
Recommended Enclosure	Bass reflex, 50 L, port area 150 cm², port length 62 cm, tuning 35 Hz
Weight (approx.)	12 kg
Warranty	Covered against defects in materials and manufacturing under normal use
Box Contents	Subwoofer, Owner's Manual, Warranty card
Safety Features	Secure installation required; high SPL can damage hearing; avoid over-driving

Frequently Asked Questions - Machete ML-12R D4 Deaf Bonce

How should I wire the dual voice coils?

The subwoofer has two voice coils (2+2 or 4+4 Ohm). You can wire them in series for higher impedance (e.g., 4+4 Ohm coils give 8 Ohm) or in parallel for lower impedance (e.g., 4+4 Ohm coils give 2 Ohm). Ensure your amplifier can handle the resulting load.

What is the recommended enclosure type and volume?

The manufacturer recommends a bass reflex enclosure with a volume of 50 liters (1.8 ft³). The port area should be 150 cm² (23 in²) and port length 62 cm (24.4 in), tuned to 35 Hz. This design optimizes performance.

How do I break in the subwoofer?

Play music at medium power for at least 40 hours to warm up the moving parts. This process loosens the suspension and ensures optimal long-term performance. Avoid high volume during break-in.

How much amplifier power do I need?

The subwoofer has an RMS rating of 500W and max 1000W. Choose an amplifier with nominal power below 500W to prevent damage. Proper gain setting is crucial to avoid clipping.

What settings should I use on my amplifier?

Set the low-pass filter (LPF) to 63-80 Hz, subsonic filter to 5 Hz below the port tuning (e.g., 30 Hz for a 35 Hz tune), and bass boost to 0 dB. Head unit volume should not exceed 80%.

Can I use a sealed enclosure instead of ported?

The manual only provides parameters for a bass reflex enclosure. While a sealed box may work, it will not match the recommended performance. For best results, follow the bass reflex design.

What are the physical dimensions of the subwoofer?

The subwoofer has a 12-inch diameter. Exact mounting depth and cutout dimensions are not specified in the manual, but typical 12-inch subwoofers have a mounting depth around 5-7 inches. Measure carefully before installation.

How do I clean and maintain the subwoofer?

Keep the subwoofer dry and free from dust. Use a soft, dry cloth to wipe the cone and surround. Avoid solvents or abrasive cleaners. Ensure proper ventilation to prevent overheating.

What does the warranty cover?

The warranty covers defects in materials and manufacturing under normal use. It does not cover damage from misuse, improper installation, or accidents. Repair or replacement is at the manufacturer's discretion.

Is this subwoofer suitable for car audio?

Yes, the Deaf Bonce Machete ML-12R D4 is designed for car audio systems. It is built to handle high power and produce loud, clear bass. Ensure secure mounting and proper electrical connections.

USER MANUAL Machete ML-12R D4 Deaf Bonce

1. Introduction
2. Safety instructions
3. Wiring diagrams
4. Recommended enclosure parameters
5. How to use
6. Specifications
7. Dimensions
8. Box contents
9. Warranty and maintenance info
10. Information on disposal of the electrical and electronic equipment (for the European countries with separate waste collection)

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1. INTRODUCTION

EN

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.

2. SAFETY INSTRUCTIONS

1. Fasten the subwoofer 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.
2. Before installing the components, if possible store the product in its original package to avoid accidental damage to the product.
3. Be careful when installing and dismantling the subwoofer! Do not let the subwoofer drop to avoid damage of its moving parts.
4. When working with tools follow safety rules.
5. Before the installation switch off the head unit and all other audio devices to avoid their damage.
6. Make sure that the location of the subwoofer does not hinder the proper operation of mechanical and electrical devices of the vehicle.
7. Do not install components in places exposed to water, excessive humidity, high or low temperature, dust or dirt. ATTENTION!!! The product may be operated at +5 °C (41F) to +40 °C (104F). In case of moisture condensation, let the product to dry.
8. 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.
9. When stretching back the speaker cables make sure that they are not in contact with sharp edges or moving mechanical devices. Make sure that they are firmly fixed and protected over the entire length.
10. The diameter of the speaker cables must be selected in accordance with the length and applied power.
11. Never stretch the cables outside of the car and near the moving parts of the car. This can lead to destruction of the insulating layer, short circuit and fire.
12. To protect the cables 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.

CAUTION!!! High sound pressure can damage your health! Please use the common sense when controlling volume!

3. WIRING DIAGRAMS

Attention! You need to connect both voice coils of the subwoofer.

Do not expose your amplifier to loads below the value predetermined by the manufacturer.

Various examples of connection types are given at the pages below. Use these examples to determine the required load impedance of your connection.

Connection of terminals

Serial connection

Total impedance = ΩSub 1 + ΩSub 2 + ΩSub 3 ...

Parallel connection

EN

Total impedance = 11 Sub 1 + 1 Sub 2 + 1 Sub 3

Schemes of enabling the load of the subwoofer

Voice coils 2+2,4+4 Ohm

The subwoofer has voice coil D2 or D4.

One subwoofer, coils in series

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Voice coils	Total impedance
2+2 Ohm	4 Ohm
4+4 Ohm	8 Ohm

One subwoofer, coils in parallel

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Voice coils	Total impedance
2+2 Ohm	1 Ohm
4+4 Ohm	2 Ohm

Subwoofers in series, coils in parallel

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Voice coils	Total impedance
2+2 Ohm	2 Ohm
4+4 Ohm	4 Ohm

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Voice coils	Total impedance
2+2 Ohm	3 Ohm
4+4 Ohm	6 Ohm

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Voice coils	Total impedance
2+2 Ohm	4 Ohm
4+4 Ohm	8 Ohm

EN

Subwoofers in series, coils in series

Diagram of a speaker system with two main speakers and connected components (no text or labels)

Voice coils	Total impedance
2+2 Ohm	8 Ohm
4+4 Ohm	16 Ohm

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Voice coils	Total impedance
2+2 Ohm	12 Ohm
4+4 Ohm	24 Ohm

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Voice coils	Total impedance
2+2 Ohm	16 Ohm
4+4 Ohm	32 Ohm

Subwoofers in parallel, coils in series

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Voice coils	Total impedance
2+2 Ohm	2 Ohm
4+4 Ohm	4 Ohm

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Voice coils	Total impedance
2+2 Ohm	1.33 Ohm
4+4 Ohm	2.66 Ohm

Voice coils	Total impedance
2+2 Ohm	1 Ohm
4+4 Ohm	2 Ohm

Subwoofers in parallel, coils in parallel

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Voice coils	Total impedance
2+2 Ohm	0.5 Ohm
4+4 Ohm	1 Ohm

Voice coils	Total impedance
2+2 Ohm	0.33 Ohm
4+4 Ohm	0.66 Ohm

Voice coils	Total impedance
2+2 Ohm	0.25 Ohm
4+4 Ohm	0.5 Ohm

CAUTION!!! High sound pressure can damage your health!

Please use the common sense when controlling volume!

Use the table below to select the desired diameter based on the length and the power consumption.

4. RECOMMENDED ENCLOSURE PARAMETERS

3D diagram of a rectangular box with an oval cutout and labeled dimensions H, W, L (no text or symbols beyond labels)

Bass reflex box

L*W*H = body volume

Model	ML-10R D2/D4	ML-12R D2/D4
The recommended volume, liters / ft3	40 / 1.4	50 / 1.8
Port area, cm2 / inch2	80 / 12.4	150 / 23
Port length, cm / inch	35 / 13.8	62 / 24.4
Port setting, Hz	37	35

5. HOW TO USE

The correct choice of the amplifier, its settings and enclosure design prolongs the lifetime of your subwoofer. You should select an amplifier with a nominal power below the nominal power of the subwoofer. Proper coordination of the head unit (HU) with the amplifier will provide clean, undistorted signal fed to the subwoofer, which prevents overheating and voice coil damage. Like any other speaker the subwoofer has moving and stationary parts. We strongly recommend that the moving parts of the subwoofer should be warmed up at the beginning of operation. Be extra careful when warming up the parts. Warm up the subwoofer using musical material for 40 hours at medium power. If you feel strange smell during operation at maximum volume, you should lower the volume of the subwoofer and let the device to cool down at a low volume.

Recommended settings of the amplifier and HU: Volume of HU should not exceed 80%. The amplifier sensitivity should be set to 50%, subsonic filter frequency (Subsonic) should be set to 5 Hz below the port settings. For example, if you configure the port at 30 Hz, Subsonic should be set to 25 Hz. The low pass filter LPF (the filter that cuts all frequencies above those set for the filter) should be set to 63-80 Hz, bassboost should be set to 0.

1. SPECIFICATIONS
   EN

Model	ML-10R D2/D4	ML-12R D2/D4
Size (Inch)	10	12
Surround material	Foam	Foam
Cone material	Pressed paper	Pressed paper
Frame material	Stamped steel	Stamped steel
Magnet type	Ferrite	Ferrite
Power RMS (W)	500	500
Power MAX (W)	1000	1000
Voice coil size (Inch)	2	2
Voice coil wire	Copper	Copper

THIELE-SMALL PARAMETERS

Impedance (Ohm)	2+2 / 4+4	2+2 / 4+4
Re (Ohm)	1.8+1.8 / 3.6+3.6	1.8+1.8 / 3.6+3.6
SPL (dB)	86 / 86.2	88 / 88.2
Xmax (mm)	12	12
Fs (Hz)	40 / 40.6	38 / 38.3
Vas (L)	13.5 / 14.2	42 / 43.1
Qts	0.48 / 0.49	0.46 / 0.47
BL	17.5 / 17.8	16.6 / 16.9

This specified sensitivity is not directly connected with the sound pressure in the vehicle and therefore should not be used as the sole indicator for comparison with other subwoofers.

ML-10R D2/D4 ML-12R D2/D4

8. BOX CONTENTS

1. Subwoofer - 1 pc.
2. Owner's Manual - 1 pc.
3. Warranty card - 1 pc.

9. WARRANTY AND MAINTENANCE INFO

EN

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 decision. 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 impossibility 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 warranty card.

The manufacturer reserves the right to change design and specification without prior notice.

10. 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 helps to protect the environment and prevent harmful effects on health.

ML-10R D2/D4

Manufacturer: Ningbo Sound Solution I&E Trading Co., Ltd Made in China

ML-12R D2/D4

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Diagram of a speaker system with two speakers and wiring (no text or labels)

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8. КОМПЛЕКТАЦИЯ

ML-12R D2/D4