User Manual for AMP MASS 1000 12D2 V2 Subwoofer
Quick guide for the AMP MASS 1000 12D2 V2 subwoofer. Includes wiring diagrams, enclosure recommendations, technical specifications, and setup guidelines.
Table of contents
Manual images
Click an image to enlargeQuick guide from the manual
To ensure optimal performance and longevity of your AMP MASS 1000 12D2 V2 subwoofer, follow these essential guidelines:
- Amplifier Matching: Select an amplifier with an RMS power rating 1.5 to 2 times the rated power of the subwoofer to ensure clean, undistorted signal delivery.
- Break-in Period: Warm up the subwoofer by playing musical material at medium power for 50 hours.
- Recommended Settings:
- Head unit volume: Do not exceed 80%.
- Amplifier Gain: Set to 50%.
- Subsonic Filter: Set to 5 Hz below the port tuning frequency (e.g., if tuned to 35 Hz, set to 30 Hz).
- LPF (Low-Pass Filter): Set between 63 Hz and 80 Hz.
- Bassboost: Set to 0.
Specifications
- Diameter: 12" (300 mm)
- Impedance: 2 Ohm + 2 Ohm
- Nominal Power: 1000 W
- Sensitivity: 86.6 dB
- Frequency Response: 31 Hz – 800 Hz
- Voice Coil: 3" (75 mm) BASV dual
- Magnet: 190x20 mm x 2 Y35 Ferrite
- Cone: Non-Pressed Paper
- Surround: Reinforced Ribbed Rubber Foam
- Basket: Aluminium
Wiring the subwoofer
The subwoofer features dual voice coils, allowing for different wiring configurations to achieve desired impedance:
- One subwoofer, coils in series: Connects to 4 Ohms.
- One subwoofer, coils in parallel: Connects to 1 Ohm.
- Subwoofers in parallel, coils in series: Connects to 2 Ohms.
- Subwoofers in parallel, coils in parallel: Connects to 0.5 Ohms.
Recommended enclosures
For optimal acoustic performance, use a ported enclosure with the following specifications:
- Volume (net int.): 57 L
- External Dimensions (W x H x D): 640 x 322 x 454 mm
- Slot Port Internal Dimensions (SW x SH x SL): 63 x 292 x 660 mm
- Tuning Frequency (Fb): 35 Hz
- F3: 31 Hz
Important: Use 15 mm thick material for the enclosure. All volumes listed are net internal volumes; ensure you account for port and brace displacement when building. If using two subwoofers, double the required volume.
Safety and maintenance
Always operate the subwoofer in a mounted state. Securely attach all audio system components to prevent damage, especially in the event of an accident. The subwoofer is designed for an operating temperature range of +5 to +30 °C.
Practical help
Common problems
Ensure the amplifier RMS power is 1.5-2x the subwoofer's rated power and that the gain is not set too high (max 50%).
Check amplifier settings; ensure the head unit volume does not exceed 80% and filters are set correctly.
Before use
- Warm up the subwoofer for 50 hours at medium power.
- Ensure the amplifier is matched correctly (1.5-2x RMS).
- Set Subsonic filter 5Hz below port tuning.
- Set LPF between 63-80Hz.
- Securely mount the subwoofer before operation.
Images and diagrams
- Wiring diagrams illustrate how to connect dual voice coils in series or parallel to achieve specific impedance loads.
- Enclosure diagram shows the required internal volume and port dimensions for a ported box design.
Model compatibility
- Requires a ported enclosure of 57L for optimal performance.
- Voice coils are dual 2 Ohm.
Manual page author
Michael Turner
Technical manual editor
Reviews PDF manuals for structure, safety notes, and practical product details so readers can find the right information quickly.