DD Audio SL712-D2

DD Audio SL712-D2 Shallow Subwoofer Instruction Manual

Model: SL712-D2

Ynlieding

The DD Audio SL712-D2 is a 12-inch shallow-mount subwoofer designed for high-fidelity audio reproduction in compact spaces. This subwoofer is engineered to deliver powerful and accurate bass response, making it suitable for various automotive and marine applications where space is limited. This manual provides essential information for the proper installation, operation, and maintenance of your SL712-D2 subwoofer.

DD Audio SL712-D2 Shallow Subwoofer, top-down view

Figuer 1: Boppe-nei-ûnderen view of the DD Audio SL712-D2 subwoofer, showcasing syn kompakte ûntwerp en robuuste konstruksje.

Key Features

  • Compact Cast Aluminum Frame: Provides structural rigidity and allows for shallow mounting applications.
  • 3-Inch High-Temperature Copper Voice Coil: Ensures high power handling and thermal stability.
  • Dual Layer Spiders with Integrated Tinsel Leads: Offers enhanced excursion control and durability.
  • 170mm Double Magnet Motor with Bumped Back Plate: Delivers strong motor force for dynamic bass output.
  • Free Flow Cooling Motor Vent System: Dissipates heat efficiently to maintain performance.
  • Water-Resistant Treated Non-Pressed Cone: Provides durability and consistent performance in various environments.
  • EROM Surround: Contributes to controlled excursion and extended lifespan.

Opset en ynstallaasje

Proper installation is crucial for optimal performance and longevity of your subwoofer. It is recommended that installation be performed by a qualified professional.

Oanbefellings foar omslach

The SL712-D2 is designed to perform well in both sealed and ported enclosures. Refer to the specifications section for recommended enclosure volumes.

  • Sealed Enclosure Volume: 0.7 - 1.5 cubic feet (19.8 - 42.5 Liters)
  • Ported Enclosure Volume: 1.0 - 1.75 cubic feet (28.3 - 50 Liters)

Montage

Ensure the mounting surface is rigid and free from obstructions. Use appropriate fasteners to secure the subwoofer firmly to the enclosure.

  • Montage Diameter: 11.375 inch (289 mm)
  • Montage djipte: 5.5 inch (140 mm)
DD Audio SL712-D2 Shallow Subwoofer, side view toant montagedjipte

figuer 2: Side view of the SL712-D2, illustrating its shallow mounting depth for installation in confined spaces.

Wiring

The SL712-D2 features a dual 2-ohm voice coil configuration. Proper wiring to your amplifier is critical to ensure stable operation and optimal power delivery. Consult your amplifier's manual for compatible impedance loads and wiring diagrams. Common configurations include:

  • Parallelle bedrading: Connect both 2-ohm voice coils in parallel for a 1-ohm total impedance.
  • Serie Wiring: Connect both 2-ohm voice coils in series for a 4-ohm total impedance.

Soargje der altyd foar dat jo ampDe fersterker is stabyl by de keazen impedânsje. Ferkearde bedrading kin sawol de subwoofer as de amplibbener.

DD Audio SL712-D2 Shallow Subwoofer, rear view terminals werjaan

figuer 3: Rear view of the SL712-D2, highlighting the dual voice coil terminals for wiring connections.

Operating Instructions

Ynbraakperioade

Allow a break-in period of approximately 20-30 hours of normal listening before operating the subwoofer at its maximum potential. This allows the suspension components to loosen and reach their optimal compliance.

AmpLifier Gain en Crossover Ynstellings

  • Winst ynstelling: Stel de amplifier gain to match the output voltage of your head unit. Avoid setting the gain too high, as this can introduce distortion and potentially damage the subwoofer.
  • Low-Pass Filter (LPF): Brûk de amplifier's low-pass filter to send only low frequencies to the subwoofer. A common starting point is 80-100 Hz, but this may vary based on your system and personal preference.
  • Subsonysk filter (HPF): As dyn amplifier has a subsonic filter, set it slightly below your enclosure's tuning frequency (for ported enclosures) or around 25-30 Hz (for sealed enclosures) to protect the subwoofer from over-excursion at very low frequencies.

Power Handling

The SL712-D2 has a continuous RMS power rating of 1000 Watts. Ensure your amplifier provides clean power within this range. Underpowering or overpowering with a clipped signal can cause damage.

Ûnderhâld

The DD Audio SL712-D2 is designed for durability, but proper care will ensure its long-term performance.

  • Reiniging: Brûk in sêfte, droege doek om de kegel en de omjouwing sêft ôf te feegjen. Foarkom it brûken fan agressive gemikaliën of tefolle focht.
  • Ynspeksje: Ynspektearje de subwoofer periodyk op tekens fan skea, lykas skuorren yn 'e surround of konus, of losse ferbiningen.
  • Omjouwingsfaktoaren: Protect the subwoofer from extreme temperatures, direct sunlight, and excessive moisture. While the cone is water-resistant, prolonged exposure to water should be avoided.

Troubleshooting

If you experience issues with your SL712-D2 subwoofer, consult the following common troubleshooting steps:

  • Gjin lûd:
    • Kontrolearje alle bedradingferbiningen fan 'e amplifier to the subwoofer and from the head unit to the amplibbener.
    • Ferifiearje de ampDe lifer is oan en ûntfangt in sinjaal.
    • Soargje derfoar dat it folume fan 'e haadienheid omheech stiet en net mute.
    • Kontrôle amplifier-lonten en auto-lonten.
  • Ferfoarme lûd:
    • Ferminderje de amplifier winst.
    • Kontrolearje de juste crossover-ynstellingen; soargje derfoar dat de subwoofer gjin frekwinsjes te heech spilet foar syn ûntwerp.
    • Verify the enclosure is sealed properly (if applicable) and free from air leaks.
    • Ensure the subwoofer is not over-excursing.
  • Swakke bas:
    • Kontrolearje de bedrading op juste polariteit.
    • Ferifiearje amplifier gain and output levels.
    • Ensure the enclosure volume matches recommendations.
    • Adjust low-pass filter settings.

If problems persist after following these steps, contact DD Audio customer support or a qualified car audio technician.

Spesifikaasjes

ParameterWearde
Speaker Grutte12 ynms
Watt RMS1000
ImpedânsjeD2 (Dual 2-Ohm)
Diameter stimspoel (VCD)3 ynms
Piston Diameter12 ynms
Fs (Resonance Frequency)29 Hz
Qms (Mechanical Q)5.4
Qes (Electrical Q)0.62
Qts (Total Q)0.54
Vas (Equivalent Volume)39.2 liter
Xmech (Mechanical Excursion)40 mm
Xmax (lineêre ekskurzje)19 mm
Frame OD (Outer Diameter)12.375 inch (314 mm)
Frame OD w/ Gasket12.5 inch (318 mm)
Montagediameter11.375 inch (289 mm)
Montage djipte5.5 inch (140 mm)
Motor diameter6.7 inch (170 mm)
Motordjipte2.5 inch (63.5 mm)
Woofer ferpleatsing0.07 CuFt (2 Liters)
Sealed Enclosure (Recommended)0.7 - 1.5 CuFt (19.8 - 42.5 Liters)
Ported Enclosure (Recommended)1.0 - 1.75 CuFt (28.3 - 50 Liters)
MateriaalAluminum, Paper
Item Gewicht24 pûn sterling

Warranty Information

The DD Audio SL712-D2 subwoofer comes with a 1 jier garânsje from the date of purchase. This warranty covers manufacturing defects under normal use. It does not cover damage caused by improper installation, abuse, accidental damage, water damage, or unauthorized modifications.

For warranty claims, please retain your proof of purchase and contact DD Audio customer support or your authorized dealer.

Stypje

For additional support, technical assistance, or to view more products, please visit the official DD Audio website:

www.ddaudio.com

You may also contact your authorized DD Audio dealer for local support.

© 2026 DD Audio. All rights reserved. Information subject to change without notice.

Ask a question about this manual

Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.