What size are the door speakers in a 1999 Chevy Blazer?
The front door speakers are 6.5 inches in diameter. Rear-door speakers are typically 4x6 inches for four-door models, while some two-door configurations used 5.25-inch speakers. This article breaks down the sizes by location and explains how to verify the exact fit for your specific vehicle.
Speaker sizes by door position
Below is a snapshot of typical factory configurations and common aftermarket replacements for the 1999 Blazer. Use this as a guide, but confirm with your VIN and door measurements if you plan a substitution.
- Front doors: 6.5 inches (approximately 165 mm) in diameter. These are commonly configured as 2-way or 3-way coaxial assemblies, with mounting depth varying by trim and year.
- Rear doors: Generally 4x6 inches (approximately 102 x 152 mm) in four-door models; some two-door configurations or specific trims may use 5.25-inch speakers. Always verify for your exact build.
When upgrading, keep in mind mounting depth, screw hole spacing, and impedance compatibility (commonly 4 ohms on factory GM systems). Adapters or custom mounting brackets may be required to fit aftermarket units.
How to verify the exact fit for your Blazer
To confirm the exact speaker size for your particular vehicle, follow these steps.
- Check the owner's manual or the service/repair manual for the audio system specifications.
- Inspect the door panels and existing speakers for size stamps or markings on the magnet or frame.
- Measure the opening diameter and mounting depth with a ruler or calipers to ensure a proper fit.
- Verify impedance (4-ohm vs. 2-ohm) and power handling to match your head unit or aftermarket amp.
- If in doubt, contact a GM dealership or reference the vehicle’s VIN-specific service information to confirm the standard sizes for your exact configuration (two-door vs four-door, trim level, and production date).
With the exact sizes confirmed, you can shop confidently for replacements: 6.5" front speakers and 4x6" rear speakers are the typical targets for a stock-to-upgraded setup. Always check mounting depth and hole patterns, and plan for adapters if your chosen speakers differ from stock dimensions.
Summary
In the 1999 Chevy Blazer, expect 6.5-inch front door speakers and 4x6-inch rear door speakers on four-door models, with some two-door variants using 5.25-inch rear speakers. Verify for your specific build by consulting manuals, inspecting the existing speakers, and measuring the openings. Upgrades should account for mounting depth and impedance to ensure a clean fit and optimal sound.
What size door speakers are in a 1999 Chevy Blazer?
Speakers that fit your 1999 Chevrolet Blazer*
| Speaker location | Speaker sizes** |
|---|---|
| Corner Dash | 2 ohm 4x6" |
| Front Door | 6-3/4" |
How many speakers are in a Chevy Blazer?
8 High-Performance Speakers.
What size are factory door speakers?
And you're going to put down that you got 6.5s. Now you go look for the right 6.5s. Much as I like to say these things are just plugandplay. A lot of times it takes a little bit more thought into it.
What size are Chevy door speakers?
6x9" Front & 6.5" Rear Door Speakers for 2014-2023 GM Silverado & Sierra 1500.
