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Description

Sundown Audio SA-6.5 SW D2

The Sundown Audio SA-6.5 SW D2 is a compact 6.5-inch shallow-mount subwoofer designed to deliver strong and controlled bass in space-limited car audio installations. Built as part of Sundown Audio’s SA Series, it features a dual 2-ohm (D2) voice coil configuration, allowing flexible wiring options for higher output from mono amplifiers. The subwoofer uses a high-temperature copper voice coil, a reinforced cone, and a durable surround to ensure clean low-frequency performance and long-term reliability. Optimized for sealed enclosures, the SA-6.5 SW D2 is an excellent choice for under-seat, truck, and compact vehicle systems where installation depth is limited but bass impact is still required.


Specifications

RE (Ohms) 4.0 7.1
FS (Hz) 48.9 51.8
VAS (L) 4.1 3.6
Qes 0.50 0.54
Qms 4.82 4.65
Qts 0.46 0.49
Le (mH) 1.69 2.45
BL (NA) 13.5 17.9
Mms (Grams) 74.8 75.6
Cms (uM/N) .14 .12
Sens (dB @ 1w/1m) 81.6 81.5
Xmax 10mm 10mm
T/S SPECS SA 6.5 D2 SA 6.5 D4

Enclosure Specifications

Sealed Enclosure 0.15 cu ft
Ported Enclosure 0.3 cu ft
Recommended Tuning 40Hz
Recommended Port Area 4 sq in
Displacement
Depth 3.79″
Outside Diameter 7.16″
Cut-Out 5.93″
Product Sku SA-6.5 SW D4

About The Product

The SA-6.5SW was created to achieve extremely high performance with less than 4” of mounting depth. Sundown uses a solid-pole design, allowing the back plate to rest against the back wall of the enclosure to reduce the mounting depth requirements even more. Twenty millimeters of mechanical excursion means surprisingly deep bass out of this mighty 6.5” sub!

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Questions and Answers

Q1: What size and voice coil configuration does the SA-6.5 SW D2 use?

A1: It is a 6.5-inch shallow-mount subwoofer with a dual 2-ohm (D2) voice coil configuration.

Q2: Is this subwoofer suitable for shallow installations?

A2: Yes, the SA-6.5 SW is specifically designed for limited-depth and under-seat installations.

Q3: What enclosure type is recommended for best performance?

A3: A sealed enclosure is recommended for tight and accurate bass response.

Q4: Can this subwoofer be wired for low-impedance systems?

A4: Yes, the dual 2-ohm coils allow wiring options down to 1 ohm, depending on amplifier compatibility.

Q5: What kind of bass performance can I expect from this subwoofer?

A5: The SA-6.5 SW D2 delivers clean, punchy, and controlled bass, especially suited for compact car audio systems.


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