ESB 3.12D4 3000 Series 12" Dual 4 Ohm Subwoofer 300w RMS
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ESB Tremila 3.12D4 12"/300 mm 4+4 Ohm DVC Subwoofer
This ESB subwoofer is a precision loudspeaker that was designed to produce very high-quality sub-bass frequency performance in a car. To maximize the performance of this subwoofer we highly recommend using a dedicated enclosure. Inside the included datasheet are specifications and two recommended enclosures: one is a sealed enclosure; the other is a ported design. Both types of enclosures will give excellent sound quality and low-frequency extension. The sealed enclosure is a better choice if space is extremely tight, while the ported enclosure will produce 3dB more output with the same power if there is extra space to work with.
Features
- Non-pressed paper cone with long throw foam surround.
- Dual 44.7 Oz ferrite magnet, 2”/50 mm voice coil.
- Steel basket with anti-resonant painting.
Explore the full range in ESB Tremila Series.
Specification
| Speaker Type | Component Subwoofer |
|---|---|
| Nominal Diameter | 12”/300 mm |
| Nominal Impedance (Znom) | 4 + 4 Ohms |
| Continuous Power Handling | 300 W |
| Peak Power Handling | 600 W |
| Rec. Amplifier Power | 100 - 300W (RMS) |
| Frequency Response | 30 - 500 Hz |
| Driver Rear Displacement | 1.4 lt |
| Voice Coil | Resistance (Re) 3.6 + 3.6 Ohms |
| Voice Coil | Diameter 2”/51 mm |
| Free Air Resonance (Fs) | 30.9 Hz |
| Sensitivity | 89.0 dB @ 1W/1m / 92.0 dB @ 2.83V/1m |
| Electrical “Q” (Qes) | 0.65 |
| Mechanical “Q” (Qms) | 7.49 |
| Total Speaker “Q” (Qts) | 0.6 |
| Equivalent Compliance (Vas) | 57.4 lt |
| Moving Mass (Mms) | 158.3 g |
| Mech. Comp. (Cms) | 0.17 mm/N |
| Magnetic Strength (BL) | 9.3 N/A |
| Effective Piston Area (Sd) | 487.6 sq. cm |
| One-Way Linear Excursion (Xmax) | 12 mm |
What's Included
- ESB 3.12D4
ESB Audio
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Have it Fitted By Our Team
Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.
- 1
Tell us your vehicle
Make, model and year, and what you'd like fitted.
- 2
We confirm the parts
Fascia, wiring and interfaces checked for your car, with a fitted price.
- 3
Fitted at our workshop
Bring it to our Beeston workshop and we do the rest.
Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA
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Frequently Asked Questions
Q: Do I need an amplifier for this subwoofer?
A: Yes, unless it is an active (powered) subwoofer with a built-in amplifier. Passive subwoofers need an external amplifier matched to the RMS power and impedance shown in the Specification tab.
Q: What does RMS power mean?
A: RMS is the continuous power a subwoofer can handle, and it is the number that matters when matching an amplifier. Peak or max figures describe short bursts only. Match your amplifier output to the RMS rating in the Specification tab.
Q: Can CEN build or supply an enclosure and fit everything?
A: Yes. CEN supplies enclosures and offers professional installation from our Nottingham premises, including amplifier wiring. Contact us to discuss your build.
Q: How does the ESB HR 11 SW fit in my car?
A: It is designed to sit inside the rim of your spare tyre. It measures 360 x 360 x 126 mm, so check your spare wheel well before ordering, or ask CEN to confirm fitment.
Q: Will the HR 11 SW work with my factory stereo?
A: Yes. It has both low-level and high-level (speaker) inputs, so it can connect to factory and aftermarket head units.
Q: What can I adjust with the HR 11 SW remote?
A: The included remote adjusts volume, switches phase between non-inverted and inverted, sets the crossover between 50 and 150 Hz and adds up to 12 dB of bass boost.
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