1. 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 cautions in this manual. Please keep the manual in a safe and accessible place for future reference.
2. Safety Instructions
- Fasten the speakers properly when installing them in the vehicle. If a component is disconnected during driving, it may cause serious damage to passengers or other vehicles.
- Before installing the components, if possible, store the product in its original packaging to avoid accidental damage.
- Be careful when installing and dismantling the speaker! Do not let the speaker drop to avoid damage to its moving parts.
- When working with tools, follow safety rules.
- Before installation, switch off the head unit and all other audio devices to avoid their damage.
- Make sure that the speaker's location does not hinder the proper operation of mechanical and electrical devices of the vehicle.
- 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 (41°F) to +40 °C (104°F). In case of moisture condensation, let the product dry.
- When performing plumbing, drilling, or cutting works on the car, make sure that there are no wiring, brake lines, fuel pipes, or other structural elements under the place of work. Follow safety rules! Use protective glasses and gloves.
- When stretching speaker cables, make sure they are not in contact with sharp edges or moving mechanical devices. Ensure they are firmly fixed and protected over their entire length.
- The diameter of the speaker cables must be selected in accordance with the length and applied power.
- Never stretch cables outside the car and near moving parts of the car. This can lead to destruction of the insulating layer, short circuits, and fire.
- To protect the cables, use rubber gaskets if the wire passes through a hole in a plate, or other similar materials if it lies close to parts exposed to heat.
⚠️ CAUTION!!! High sound pressure can damage your health! Please use common sense when controlling volume!
3. Wiring Diagrams
Do not expose your amplifier to loads below the value predetermined by the manufacturer. Various examples of connection types are given below. Use these examples to determine the required load impedance of your connection.
Serial Connection of Speakers
- Voice coil 4 Ohm, 2 HFS: Total impedance 8 Ohm
- Voice coil 4 Ohm, 3 HFS: Total impedance 12 Ohm
- Voice coil 4 Ohm, 4 HFS: Total impedance 16 Ohm
Parallel Connection of Speakers
- Voice coil 4 Ohm, 2 HFS: Total impedance 2 Ohm
- Voice coil 4 Ohm, 3 HFS: Total impedance 1.33 Ohm
- Voice coil 4 Ohm, 4 HFS: Total impedance 1 Ohm
Mixed Connection of Speakers
- Voice coil 4 Ohm, 4 HFS: Total impedance 4 Ohm
⚠️ CAUTION!!! High sound pressure can damage your health! Please use common sense when controlling volume!
Selection of Speaker Cable Diameter
Use the table below to select the desired diameter based on the length and power consumption.
| Power Consumption (W) | Cable Length (m) | A.W.G | mm² |
|---|---|---|---|
| 25000 | 0-1 | 5 | 16.8 |
| 20000 | 0-1 | 8 | 8.37 |
| 15000 | 0-1 | 10 | 5.26 |
| 10000 | 0-1 | 14 | 2.08 |
| 8000 | 1-2 | 5 | 16.8 |
| 6000 | 1-2 | 8 | 8.37 |
| 4000 | 1-2 | 10 | 5.26 |
| 2000 | 1-2 | 14 | 2.08 |
| 1000 | 2-3 | 5 | 16.8 |
| 500 | 2-3 | 8 | 8.37 |
| 250 | 2-3 | 10 | 5.26 |
| 100 | 2-3 | 14 | 2.08 |
4. Filtering, Recommended Amplifier Settings
The correct choice of amplifier, its settings, filtering, and enclosure largely influence the lifespan of your audio system. You should select an amplifier with a nominal power not exceeding the nominal power of the speakers. Proper coordination of the head unit (HU) with the amplifier will allow you to get a clean, undistorted signal applied to the component to prevent overheating and voice coil damage.
Recommended settings of the amplifier and HU:
- Volume of HU should not exceed 80%.
- The amplifier sensitivity should be set to 50%.
The recommended filter settings:
- The high pass filter (HPF) (the filter that cuts all frequencies below those set for the filter) should be set to 2.5-8 kHz (12-24 dB/Oct).
Recommended amplifiers:
- Atom 500.2 Pro
- Atom 700.2 Pro
- Atom 900.2 Pro
- Atom 2.5K Pro
- Atom 3.5K Pro
AT-37 Sport HPF - 2.5-8 kHz (12-24 dB/Oct)
Frequency response graph shows a curve starting around 1kHz, rising to a peak between 2kHz and 5kHz, and then gradually decreasing towards 10kHz and beyond. The Y-axis is labeled in dB, and the X-axis is labeled in kHz (1k, 2k, 5k, 10k).
5. Specifications
| Parameter | Value |
|---|---|
| Model | AT-37 Sport |
| Size (inch/mm) | 3.9 / 100 |
| Diaphragm material | Polycarbonate |
| Body | Aluminum |
| Magnet type | Neodymium |
| Power RMS (W) | 60 |
| Power MAX (W) | 120 |
| Voice coil size (inch) | 1.5 |
| Voice coil wire | CCAW |
| Frequency response (Hz) | 2,000 - 20,000 |
| Impedance (Ohm) | 4 |
| SPL (dB) | 108.8 |
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 speakers.
6. Dimensions
The following dimensions are provided for installation planning:
- Overall Diameter: 100 mm / 3.94 inches
- Cutout Diameter: 92.5 mm / 3.64 inches
- Mounting Depth: 75.5 mm / 2.97 inches
- Overall Height: 65 mm / 2.56 inches
- Magnet Diameter: 79.1 mm / 3.11 inches
The diagram shows a circular speaker with mounting holes and measurements. It also indicates a non-polar capacitor, likely for crossover or protection.
A non-polar capacitor is included.
7. Box Contents
- High-frequency speaker - 2 pcs.
- Mounting kit - 1 pc.
- Owner's manual - 1 pc.
- Warranty card - 1 pc.
Warranty Information
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.
Deaf Bonce shall not be liable for any damage caused by transportation. Deaf Bonce 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 the Deaf Bonce 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.
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