Audio System ASY-12 Subwoofer
145,00 €
Audio System ASY-12 is a 12-inch subwoofer driver for installers building SPL competition systems. Its dual 2-ohm voice coils allow the wiring configuration to be matched to the selected amplifier load. The 500 W RMS rating is intended for a custom-built system. A mounting depth of 16.1 cm and mounting diameter of 28.2 cm help determine the required enclosure space. This is a separate driver, so the enclosure and amplifier must be selected independently.
Audio System ASY-12 is a 12-inch subwoofer designed for sound pressure level (SPL) competition systems. It must be installed in a separately selected enclosure, so it is not a complete subwoofer cabinet. Its dual 2-ohm voice coils and 500 W RMS power rating affect the choice of amplifier and wiring configuration.
Construction Designed for SPL Systems
The motor assembly uses high-permeability plates and an enlarged magnet. The basket is bonded to the motor with special epoxy adhesive, which also helps damp vibrations at this connection.
This construction is intended for SPL applications, where matching the driver, enclosure and amplifier is essential. The model is made for a custom-built car audio system and is not intended to be used without an enclosure.
Voice-Coil Wiring and Amplifier Selection
This is not a single 2-ohm voice-coil model. The final load presented to the amplifier depends on how both coils are connected. Series and parallel wiring produce different total loads, so the correct configuration must be chosen for the specific amplifier.
Before connecting the subwoofer, check that the amplifier is stable at the selected load and consider its RMS output. Wire both coils with matching polarity so that they move in the same direction. Do not select an amplifier solely on the basis of the 1000 W peak dynamic power figure.
Setup and System Tuning
When installing a separate driver, the gain level and low-pass filter are adjusted through the amplifier or audio processor. Begin with a low gain setting and increase it gradually while monitoring signal clarity.
Set the filter point according to the frequency range reproduced by the system’s other speakers. If the processor offers phase or delay adjustment, compare the available settings at the measurement position. Competition systems should be tuned using measurements because maximum sound pressure depends on the complete installation.
Enclosure Design and Installation
The mounting depth is 16.1 cm, while the mounting diameter is 28.2 cm. Before cutting the mounting baffle, measure the actual installation area and account for the basket shape. Leave enough clearance behind the magnet so that it is not pressed against the enclosure.
Enclosure volume and tuning frequency must be calculated for the particular SPL system. The 36.8 Hz resonance frequency alone is not enough to determine the correct design. Vehicle cabin characteristics and enclosure orientation affect the result, so test the position before permanently securing the enclosure.
How to Interpret the Stated Parameters
The stated 85.8 dB sensitivity does not include measurement conditions. A meaningful comparison with other models is possible only when the same measurement method is used. The same limitation applies to power figures for which no test conditions are supplied.
The stated Xmax is 3.2 cm, but the measurement method is not specified, nor is it clear whether this represents one-way excursion or total travel from one extreme to the other. It should therefore not be compared directly with figures measured using different methods. Resonance frequency is an enclosure-design parameter, not the lower limit of the reproduced frequency range.
Technical Specifications
| Model | Audio System ASY-12 |
|---|---|
| Type | Subwoofer driver |
| Intended application | SPL competition audio systems |
| Nominal size | 12 inches |
| Sensitivity | 85.8 dB; measurement conditions not provided |
| Voice coils and nominal impedance | Dual 2-ohm voice coils |
| DC resistance (Re) | 1.9 ohms |
| Resonance frequency (Fs) | 36.8 Hz |
| RMS power | 500 W; test conditions not provided |
| Peak dynamic power | 1000 W |
| Xmax | 3.2 cm; measurement method not specified, and it is not stated whether this is one-way excursion or total travel from one extreme to the other |
| Mounting depth | 16.1 cm |
| Mounting diameter | 28.2 cm |
| Motor construction | High-permeability plates and an enlarged magnet |
| Basket-to-motor connection | Bonded and damped with special epoxy adhesive |
FAQ
Is this a complete subwoofer cabinet?
No. It is a separate 12-inch driver that must be installed in a purpose-selected enclosure and powered by an external amplifier.
What amplifier should I choose?
Choose according to the load produced by the voice-coil wiring, the amplifier’s stability and its RMS output. Peak power is not a target for continuous amplifier output.
How should the two voice coils be connected?
Connecting the two 2-ohm coils in parallel produces a nominal 1-ohm load, while connecting them in series produces a nominal 4-ohm load. Wire both coils with matching polarity and confirm that the amplifier is stable at the selected load.
What type of enclosure is required?
The enclosure type, volume and tuning frequency must be calculated according to the vehicle and the intended SPL result. Mounting dimensions alone are not sufficient for enclosure design.
How should I choose the enclosure position in the vehicle?
Test several enclosure positions and orientations before securing it permanently. Cabin shape affects sound pressure, so the result is best evaluated at the measurement position.
