About the Rockford Fosgate T1650

Product highlights:
- Featured in our article: Best car speaker lines for 2025
- 2-way 6-1/2" speakers (pair)
- injection molded carbon fiber and polypropylene woofer
- Santoprene rubber surround
- 1" aluminum dome tweeter
- integrated concealed 12dB/octave crossover
- grilles included
- Vertical Attach Surround Technique (VAST™) increases cone area
- power range: 10-75 watts RMS (150 watts peak power)
- frequency response: 44-22,000 Hz
- sensitivity: 88 dB
- top-mount depth: 2-9/16"
- warranty: 1 year
- MFR # T1650
- Item # 575T1650
What's in the box:
Rockford Fosgate T1650 owner's manual
If you need assistance accessing this owner's manual, please give us a call.- 2 Two-way speakers
- 2 Grilles
- Eight 1-1/4" Allen head screws
- 3mm Allen head bit
- 8 Speed clips
- Installation/Operation manual (English/ French/ Spanish/ German/ Italian)
More details on the Rockford Fosgate T1650

Features & specs
General | ||
---|---|---|
Speaker Size | 6 1/2 | |
Driver Design | 2-way | |
Woofer Design | Cone | |
Woofer Material | Carbon Fiber filled IMPP | |
Woofer Surround | Santoprene Rubber | |
Midrange Design | --- | |
Midrange Material | --- | |
Tweeter Design | 1" Dome | |
Tweeter Material | Treated Aluminum | |
Super Tweeter Design | --- | |
Super Tweeter Material | --- | |
Impedance (Ohms) | 4 | |
Weather-resistant | No | |
Grilles Included | Black, Metal mesh, Plastic frame | |
Parts Warranty | 1 Year | |
Labor Warranty | 1 Year | |
Specifications | ||
Sensitivity (1W at 1 meter) | 88 | |
Sensitivity at 2.83 volts | 91 | |
Frequency Response | 44 - 20k Hz | |
Maximum RMS Wattage | 75 | |
Peak Power Handling (Watts) | 150 | |
Top-mount Depth (Inches) | 2 9/16 | |
Bottom-mount Depth (Inches) | N/A | |
Cutout Diameter or Length (inches) | 5 1/2 | |
Mounting Height (Inches) | 1.108 | |
Frame Width | 6.518 | |
Frame Length | 6.518 |
Product Research
Features
Injection-Molded Woofers: The woofer cones are injection-molded carbon fiber filled polypropylene. This molding process assures a uniform cone thickness for superior linearity and clarity. It is also light weight and rigid for decreased distortion and improved bass response.
Klippel Verified: The Klippel distortion analyzer, a device that uses a laser and sophisticated software to do large-scale analysis of drivers in motion, lets Rockford Fosgate optimize the speaker's motor structure, voice coil alignment, and suspension to yield the best possible performance.
VAST Surround: The Vertical Attach Surround Technique (VAST) increases a speaker's effective radiating cone area without increasing the size of the basket.
FlexFit 2 Basket: The FlexFit 2 frame utilizes slots (where possible) instead of single screw sized holes; allowing slight adjustment of the speaker when mounted.
Size Classification Note: Some manufacturers, including Rockford Fosgate, call this size speaker a 6-1/2". Because it requires a larger cutout than a standard 6-1/2" speaker, Crutchfield has traditionally referred to this size woofer as a 6-3/4". Please refer to the Crutchfield Vehicle Selector to confirm fit in your vehicle.
Tweeters: Each speaker features a 1" treated aluminum dome tweeter mounted to an offset cantilever to eliminate frequency response anomalies due to acoustic reflection between the woofer cone and the rear of tweeter. The tweeters are angled so you can direct them toward the listening positions.
Speaker Terminals: These speakers have 0.25" wide positive (+) terminals and 0.187" wide negative (-) terminals, which are too large for the vehicle-specific speaker harnesses Crutchfield supplies for many vehicle applications. We recommend that a pack of assorted female quick slides (item number 120FQS10PK, sold separately) be purchased and spliced to the harnesses to adapt them to the speaker terminals.
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Customer Q&A
7 questions already asked
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These speakers sound great, even with only the low power from a head unit. However, to reach their potential they definitely need more power. The tweeter extends around an inch in front of the speaker making it hard to fit behind factory grills.
Steven from Pine Bluff, AR