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1978 Triumph TR7

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Subwoofers and enclosures, specifically designed for your 1978 TR7, as well as universal fit solutions

Overview Upgrade your Speakers Add a Subwoofer Add an Amplifier Digital Sound Processors Audio Installation & Accessories Add a Backup Camera Dads & Grads Sale

Subwoofers and Boxes for 1978 Triumph TR7

A subwoofer that works with, or is designed for, your 1978 Triumph TR7 will add bass, clarity and depth to your music and system. A quality subwoofer will give realism and an overall rich, complete sound that you otherwise would not get with a factory car sound system.

Subwoofer bass packages

Universal Subwoofer Bass Packages

These packages include an amp, sub(s), an enclosure and amplifier wiring. They should fit your Triumph TR7, but verify your trunk/rear vehicle area.

Universal Subwoofers

Universal Subwoofers

These sub(s) are perfect for adding to a empty box or custom built enclosure. They should work with your Triumph TR7, but verify your trunk/rear vehicle area.

Universal-fit loaded and powered sub boxes

Universal-fit Loaded Subwoofer Boxes

These boxes include sub(s) and some include an amp. They should fit your Triumph TR7, but verify your trunk/rear vehicle area.

Universal-fit empty unloaded sub boxes

Empty Universal-fit Sub Box Enclosures

These boxes are ready for you to add a sub and amp. They should fit your ride, but verify your trunk/rear vehicle area.

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RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
Series
Many brands group their products into series or lines of products to help customers know the level of quality (good, better, best for example). You can filter by series and the brand using our guided browsing.
Punch Series (72)
S Series (43)
CompRT Series (42)
CompR Series (40)
W3 v3 Series (39)
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SA Series (35)
VC Series (32)
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Reference Series (17)
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XD Series (1)
XO Series (1)
Subwoofer Size
Refers to the diameter of the subwoofer, measured in inches.
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.
Top-Mount Depth (Mounting Depth)
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Voice Coil(s)
Dual voice coil subs have more wiring flexibility than single voice coils subs; however, single voice coil subwoofers provide easier hookup options for wiring multiple subwoofers in parallel or series. You may also run a dual voice coil (DVC) sub in parallel, series, or combination. A quad voice coil has four voice coils and is equal to two dual voice coil subwoofers as far as wiring goes.
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
Subwoofer Design
This is the design of the subwoofer or the opening of the subwoofer enclosure. Each design has it's own benefits, whether it is a square, circle, or oval.

Round/Circle: This is the typical and common subwoofer design. They have a round cone and are a circle in design.

Square: These woofers are able to achieve a greater cone area in a smaller space. Because of the greater surface area, some square subwoofers will be louder than a round subwoofer of the same size.

Minimum Sealed Box Volume
This value indicates the minimum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Maximum Sealed Box Volume
This value indicates the maximum sealed box volume that the manufacturer recommends for the subwoofer. The volume is typically displayed in cubic feet.
Sensitivity
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
  Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
Main Cone Color
This is the color of the speaker's or subwoofer's cone.
Recommended Enclosure Type
This is the recommended type of enclosure that the subwoofer should be installed into. Some subwoofers are specially designed for particular enclosures.

Sealed: These enclosures completely enclose the air inside the box. These boxes produce a tight bass.

Ported/Vented: These enclosures have a slot of air to escape from the box. The result is a sound that has more "boom".

Bandpass: These are a combination of both sealed and ported enclosures. They can be very efficient, but require tuning for the best response.

Xmax (millimeters)
Typically measured in millimeters, the Xmax value is the measure of a speaker cone's maximum excursion in one direction while maintaining a linear behavior.
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Rockford Fosgate Prime R2 R2SD4-10

400W Peak (200W RMS) 10" Prime Series Dual 4-ohm Shallow Car Subwoofer

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Rockford Fosgate Prime R2 R2SD4-10

400W Peak (200W RMS) 10" Prime Series Dual 4-ohm Shallow Car Subwoofer

• Peak Power: 400 watts
• RMS Power: 200 watts
• Impedance: Dual 4 ohm
• Mica Injected Polypropylene - MIPP Cone
• Foam Surround
• Mount depth: 3.417"
• Sensitivity: 82 dB

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$159.99

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NVX XCW152

4000W Peak (2000W RMS) 15" X-Series Dual 2-ohm SPL Subwoofer

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NVX XCW152

4000W Peak (2000W RMS) 15" X-Series Dual 2-ohm SPL Subwoofer

• Peak Power: 4000 watts
• RMS Power: 2000 watts
• Impedance: Dual 2 ohm
• Enhanced Woven Fiber Paper Composite Cone
• Custom High Roll Foam Surround
• 30 mm Xmax (One Way)
• Sensitivity: 87.3 dB

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Orion HCCA104

8000W Peak (2000W RMS) 10" HCCA Series Dual 4-ohm Competition Car Subwoofer

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Orion HCCA104

8000W Peak (2000W RMS) 10" HCCA Series Dual 4-ohm Competition Car Subwoofer

• Peak Power: 8000 watts
• RMS Power: 2000 watts
• Impedance: Dual 4 ohm
• Moisture and UV-resistant Paper cone
• Nitrile Butadiene Rubber (NBR)-Foam surround
• Mount depth: 8.425"
• Sensitivity: 84 dB

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• Peak Power: 8000 watts
• RMS Power: 2000 watts
• Impedance: Dual 4 ohm
• Moisture and UV-resistant Paper cone
• Nitrile Butadiene Rubber (NBR)-Foam surround
• Mount depth: 8.425"
• Sensitivity: 84 dB

Rockford Fosgate Power T1 T1D215

2000W Peak (1000W RMS) 15" Power Series Dual 2-ohm Car Subwoofer

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Rockford Fosgate Power T1 T1D215

2000W Peak (1000W RMS) 15" Power Series Dual 2-ohm Car Subwoofer

• Peak Power: 2000 watts
• RMS Power: 1000 watts
• Impedance: Dual 2 ohm
• Kevlar Reinforced Pulp Paper Cone
• Santoprene Rubber Surround
• Mount depth: 8.39"
• Sensitivity: 88 dB

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Cerwin-Vega V12DV4

3600W Peak (1200W RMS) 12" Vega Series Dual 4-ohm Subwoofer

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Cerwin-Vega V12DV4

3600W Peak (1200W RMS) 12" Vega Series Dual 4-ohm Subwoofer

• Peak Power: 3600 watts
• RMS Power: 1200 watts
• Impedance: Dual 4 ohm
• Carbon Fiber Polypropylene Cone
• Santoprene Rubber Surround
• Mount depth: 6.57"
• Sensitivity: 87 dB

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Sony XS-W124GS

1800W Peak (420W RMS) 12“ XS Series Single 4-ohm Car Subwoofer

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Sony XS-W124GS

1800W Peak (420W RMS) 12“ XS Series Single 4-ohm Car Subwoofer

• Peak Power: 1800 watts
• RMS Power: 420 watts
• Impedance: Single 4 ohm
• Paper cone with Polypropylene cap
• Rubber surround
• Mount depth: 5-3/4"
• Sensitivity: 83 dB

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$168.00

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Sundown Audio NS v.6 D2 15" (NSV615D2)

7000W Peak (3500W RMS) 15" Nightshade Series Dual 2-ohm Car Subwoofer (SW-NSV615D2)

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Sundown Audio NS v.6 D2 15" (NSV615D2)

7000W Peak (3500W RMS) 15" Nightshade Series Dual 2-ohm Car Subwoofer (SW-NSV615D2)

• Peak Power: 7500 watts
• RMS Power: 3500 watts
• Impedance: Dual 2 ohm
• Polypropylene Cone
• Mega Roll V2 Surround
• Sensitivity: 85.84 dB

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Kicker CVR12 (52CVR124)

900W Peak (450W RMS) 12" CompVR Series Dual 4-ohm Car Subwoofer

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Kicker CVR12 (52CVR124)

900W Peak (450W RMS) 12" CompVR Series Dual 4-ohm Car Subwoofer

• Peak Power: 900 watts
• RMS Power: 450 watts
• Impedance: Dual 4 ohm
• Injection Molded Polypropylene Cone
• ISD (Inverted Structural Dome)
• Santoprene Rubber Surround
• Mount depth: 6-3/8"
• Sensitivity: 86.9 dB

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Kicker CVT124 (52CVT124)

800W Peak (400W RMS) 12" CompVT Series Single 4-ohm Shallow Car Subwoofer

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Kicker CVT124 (52CVT124)

800W Peak (400W RMS) 12" CompVT Series Single 4-ohm Shallow Car Subwoofer

• Peak Power: 900 watts
• RMS Power: 450 watts
• Impedance: Single 4 ohm
• Injection Molded Polypropylene Cone
• ISD (Inverted Structural Dome)
• Santoprene Rubber Surround
• Mount depth: 4-3/8"
• Sensitivity: 87.1 dB

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Rockford Fosgate Power T1 T1S1-10S

1000W Peak (500W RMS) 10" T1 Slim Series Single 1-ohm Shallow Subwoofer for Sealed Enclosures

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Rockford Fosgate Power T1 T1S1-10S

1000W Peak (500W RMS) 10" T1 Slim Series Single 1-ohm Shallow Subwoofer for Sealed Enclosures

• Peak Power: 1000 watts
• RMS Power: 500 watts
• Impedance: Single 1 ohm
• Optimized for sealed enclosures
• Carbon Fiber/PMI/Glass Fiber Cone
• Synthetic organic polymer Surround
• Mount depth: 3.01"
• Sensitivity: 82 dB

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Kicker Comp TC10 (43TC104)

300W Peak (150W RMS) Loaded Single 10" Vented Truck Enclosure

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Kicker Comp TC10 (43TC104)

300W Peak (150W RMS) Loaded Single 10" Vented Truck Enclosure

• Sealed truck enclosure with 1 10" Comp Series Subwoofer
• 150 watts RMS (300 watts Peak)
• Final Impedance: 4-ohm
• Dimensions: 4-3/4" L x 15" H x 21-3/4" W x 7-11/16" W2

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Pioneer TS-A2000LB

700W Peak (250W RMS) Loaded Single 8" Sealed Shallow Truck Enclosure

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Pioneer TS-A2000LB

700W Peak (250W RMS) Loaded Single 8" Sealed Shallow Truck Enclosure

• Sealed shallow truck enclosure with 1 8" A Series Subwoofer
• 250 watts RMS (700 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 13.75" L x 9.875" H x 5.125" W

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Alpine W-DB10V (Open Box, Great)

1500W Peak (500W RMS) Loaded Dual 10" Vented Subwoofer Enclosure

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Alpine W-DB10V (Open Box, Great)

1500W Peak (500W RMS) Loaded Dual 10" Vented Subwoofer Enclosure

• Ported enclosure with 2 10" Bass Series Subwoofer
• 250 watts RMS each (750 watts Peak each)
• Final Impedance: 2-ohm
• Dimensions: 30-1/2" L x 15-1/2" H x 18-1/4" W

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• Ported enclosure with 2 10" Bass Series Subwoofer
• 250 watts RMS each (750 watts Peak each)
• Final Impedance: 2-ohm
• Dimensions: 30-1/2" L x 15-1/2" H x 18-1/4" W

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Alpine S2-SB12

1800W Peak (600W RMS) Loaded Single 12" Sealed PrismaLink Subwoofer Enclosure with RGB Light

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Alpine S2-SB12

1800W Peak (600W RMS) Loaded Single 12" Sealed PrismaLink Subwoofer Enclosure with RGB Light

• Sealed enclosure with 1 12" S Series Subwoofer
• 600 watts RMS (1800 watts Peak)
• Final Impedance: 2-ohm
• Dimensions: 16.5" L x 15" H x 13.25" W

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List price $600.00
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Atrend 10DV-MOJO

Empty Dual 10" Vented Enclosure for Memphis MOJO, MOJO Pro, and M6/M7 Series Subwoofers

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Atrend 10DV-MOJO

Empty Dual 10" Vented Enclosure for Memphis MOJO, MOJO Pro, and M6/M7 Series Subwoofers

• 10" Dual Ported Subwoofer Enclosure
• Fits Memphis MOJO, MOJO Pro, and M6/M7 series subwoofers
• 1" Medium Density Fiberboard (MDF) construction
• Premium black carpet finish
• Total box volume: 3.2 cubic feet

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Sundown Audio E10 v.4 D2 10" (E10V4D2)

1500W Peak (750W RMS) 10" E Series Dual 2-ohm Car Subwoofer (SW-EV410D2)

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Sundown Audio E10 v.4 D2 10" (E10V4D2)

1500W Peak (750W RMS) 10" E Series Dual 2-ohm Car Subwoofer (SW-EV410D2)

• Peak Power: 1500 watts
• RMS Power: 750 watts
• Impedance: Dual 2 ohm
• Pressed Paper Cone
• Pressed Foam Surround
• Mount depth: 5.625"
• Sensitivity: 83.6 dB

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Sundown Audio NS v.6 D1 18" (NSV618D1)

7000W Peak (3500W RMS) 18" Nightshade Series Dual 1-ohm Car Subwoofer (SW-NSV618D1)

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Sundown Audio NS v.6 D1 18" (NSV618D1)

7000W Peak (3500W RMS) 18" Nightshade Series Dual 1-ohm Car Subwoofer (SW-NSV618D1)

• Peak Power: 7000 watts
• RMS Power: 3500 watts
• Impedance: Dual 1 ohm
• Polypropylene Cone
• Mega Roll V2 Surround
• Sensitivity: 87.47 dB

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DS18 ZR212LD

3200W Peak (1600W RMS) Loaded Dual 12" Vented Enclosure

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DS18 ZR212LD

3200W Peak (1600W RMS) Loaded Dual 12" Vented Enclosure

• Ported enclosure with 2 12" ZR Series Subwoofer
• 3200 watts RMS (1600 watts Peak
• Final Impedance: 1-ohm
• Dimensions: 36.22" L x 14.48" H x 19.68" W x 21.65" W2

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Rockford Fosgate Prime R2 R2SD2-10

400W Peak (200W RMS) 10" Prime Series Dual 2-ohm Shallow Car Subwoofer

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Rockford Fosgate Prime R2 R2SD2-10

400W Peak (200W RMS) 10" Prime Series Dual 2-ohm Shallow Car Subwoofer

• Peak Power: 400 watts
• RMS Power: 200 watts
• Impedance: Dual 2 ohm
• Mica Injected Polypropylene - MIPP Cone
• Foam Surround
• Mount depth: 3.417"
• Sensitivity: 82 dB

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Atrend 8DQV

Empty Dual 8" Vented Subwoofer Enclosure

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Atrend 8DQV

Empty Dual 8" Vented Subwoofer Enclosure

• 8" Dual Ported Subwoofer Enclosure
• 3/4" Medium Density Fiberboard (MDF) construction
• Miter and Dado construction
• Premium carpet finish
• Silver spring loaded terminal cups
• Glued and braced with fasteners
• Total box volume: 1.13 cubic feet

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    FAQ for Subwoofer and Sub Box Upgrades in 1978 TR7

    Q: Can I upgrade or change the Subwoofer and Sub Box Upgrades in 1978 Triumph TR7?

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