Product Description
The RetroSound 4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio (store SKU RS-SP-4X8INCHDOORSPEAKERSFOR1966FO, Retro Manufacturing part R-483N) is a vehicle-specific RetroSound speaker listing from an authorized dealer.
Application: 1966 x 8". Install location: factory speaker opening. Speaker size: 4x8. Design: 3-Way.
Published electrical and mounting data for part R-483N: 4ohm nominal impedance; TrueRating™ / published power handling 60/120; frequency response 65Hz-21kHz; sensitivity 87dB; mounting depth 1.59″ (40.5 mm). Figures come from Retro Manufacturing’s product information for this model — if the sheet in the box differs, follow the sheet that ships with the product.
Sized for the factory speaker opening on the vehicle years in the title. Test-fit brackets and grills (when included) before final mounting; do not force mismatched openings.
Features for this listing
- Fitment focus: 1966 x 8" (factory speaker opening)
- Manufacturer part R-483N — 4x8
- Authorized RetroSound / Retro Manufacturing product
- Vintage Car Radio does not offer installation
This page is only for RetroSound 4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio. Other RetroSound speaker sizes and vehicles have their own listings with their own part numbers and openings — match years, location, and size carefully.
4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio specifications
- Manufacturer model: R-483N
- Store SKU: RS-SP-4X8INCHDOORSPEAKERSFOR1966FO
- Years (this listing): 1966
- Vehicle focus: x 8"
- Install location: factory speaker opening
- Nominal Diameter (inch): 4x8
- Description: 3-Way
- Nominal impedance: 4ohm
- Frequency response: 65Hz-21kHz
- Sensitivity: 87dB
- Power Handling (watts RMS/peak): 60/120
- Speaker Grill: NO
- Mounting Depth (inch): 1.59
- Mounting Depth (mm): 40.5
- Sensitivity (SPL@1w/1m): 87dB
Source: Retro Manufacturing product page for part R-483N. If the sheet in the box differs, follow the sheet that ships with the product.
4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio wiring and tech tips
- Disconnect the vehicle battery before working on speaker wiring.
- This listing is for the 4x8 speaker (part R-483N) at the factory speaker opening location on 1966 x 8".
- Confirm polarity and load: published impedance is 4ohm; power handling 60/120.
- Verify mounting depth clearance of 1.59″ (40.5 mm) at the factory speaker opening.
- Use brackets, grills, and wire included with this kit when supplied; do not force mismatched openings.
- Do not exceed the RMS rating published for this model.
Vintage Car Radio does not offer installation. Share the manufacturer manuals with your installer if needed.
4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio manuals
- Manufacturer product page for R-483N (specs & linked manuals)
- Retro Manufacturing warranty
- Retro Manufacturing help center
Documents on the R-483N product page are the official reference for RetroSound 4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio.
One-Year Retro Manufacturing Warranty
Per Retro Manufacturing’s limited warranty, Speakers such as R-483N are covered for 1 year from the original purchase date for defects in materials and workmanship when purchased from Retro Manufacturing or an authorized dealer.
RA required — tech@retromanufacturing.com or 1-888-325-1555, or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not offer installation.
FAQ — 4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio
What exactly is this listing?
RetroSound 4" x 8" Premium 3-Way Speakers for 1966 Ford Thunderbird with Deluxe Factory Radio — manufacturer part R-483N, store SKU RS-SP-4X8INCHDOORSPEAKERSFOR1966FO, for the factory speaker opening position on 1966 x 8".
Is this the same as every other 4×6 / speaker on the site?
No. Hardware families may share a part number (R-483N), but this page’s fitment, years, and install location are specific to this SKU.
Do you install?
No. DIY or a shop you choose.
Warranty?
Typically 1-year Speakers coverage from Retro Manufacturing — see Warranty.
Need help?
844-802-4499 or 574-226-6676.
Specs
Wiring / Tech Tips
Manuals
Warranty
One-Year Retro Manufacturing Warranty
Per Retro Manufacturing’s limited warranty, Speakers such as R-483N are covered for 1 year from the original purchase date for defects in materials and workmanship when purchased from Retro Manufacturing or an authorized dealer.
RA required — tech@retromanufacturing.com or 1-888-325-1555, or Vintage Car Radio at 844-802-4499 / 574-226-6676.
Vintage Car Radio does not offer installation.
