What is the exact outside dimension of the speaker frame? I'd like to mount it in an enclosure which allows room for a 3 1/4 inch wide speaker.

The front mounting flange of this speaker is basically square, with the four sides of the square being slightly rounded outward. There are four mounting holes, one in each corner of the mounting flange. The distance across the diagonals of the flange (crossing two opposite corner mounting holes) is 3.75 inches. The distance across the widest middle section of the flange ( intersecting the center of speaker cone) is 3.165 inches. Measurements were taken with a dial caliper and are accurate to 1/1000th (0.001) of an inch. So, the speaker will just squeeze into your 3.25" mounting space with only 0.085 (about 3/32") of an inch to spare - assuming you are measuring the 3.25" across the width of a square speaker mounting space and not diagonally across the square space. BTW The depth is 1.7".

Does it comes in pairs or this is just a single speaker ?

It's a single speaker. If you'd like a pair, you'll have to order two. Worth the extra effort. Mine sounds great.

whats the wattage/rms of this speaker?

Thank you for contacting Parts Express. To follow are Product Specifications for the item. Nominal Diameter3"Power Handling (RMS)10 WattsPower Handling (max)20 WattsImpedance4 ohmsFrequency Response135 to 16,000 HzSensitivity81 dB 1W/1mVoice Coil Diameter0.75"I hope the information is helpful. Should you have any other questions, please let us know. Customer Service Team

How thick is this speaker

They are good speakers for 10 watts+10 watts in a sead box if this helps any

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GRS 3FR-4 Full-Range 3" Speaker Driver 4 Ohm

Product ID: 260613395

Details

Audio output mode
Surround
Brand
GRS
Connectivity technology
Auxiliary
Frequency response
20000 Hz
Speaker maximum output power
25 Watts

⚡4 Ohm impedance for efficient power use

🔊3" full-range driver

🛠️Durable coated paper cone with foam surround

7356 som

Duties & taxes included

In stock

Sold byAmazon KyrgyzstanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🎶 Elevate your sound game with compact power and clarity!

COMPACT YET POWERFUL - 3-inch driver fits seamlessly into any setup without compromising sound quality.
ROBUST BUILD QUALITY - Economical ferrite magnet and pincushion frame guarantee durability and longevity.
EFFICIENT POWER HANDLING - 4 Ohm impedance ensures optimal energy use for crisp output at 25W max power.
PLUG AND PLAY VERSATILITY - Compatible with laptops, smartphones, and car systems for seamless integration.
CRYSTAL CLEAR AUDIO PRECISION - Coated paper cone and foam surround deliver rich, distortion-free sound.

The GRS 3FR-4 is a 3-inch full-range speaker driver featuring a coated paper cone with foam surround for clear, distortion-free audio. With a 4 Ohm impedance and 25W max power, it offers efficient and powerful sound output. Its durable ferrite magnet assembly and pincushion frame ensure long-lasting performance, while compatibility with multiple devices makes it a versatile choice for home theater, car, and computer audio setups.

Specifications

ASIN	B00K2ESJZ2
Additional Features	Subwoofer
Age Range Description	Adult
Antenna Location	For Computers, For Televisions, For Surround Sound Systems
Audio Driver Type	Dynamic Driver
Audio Output Mode	Surround
Best Sellers Rank	#42,594 in Electronics ( See Top 100 in Electronics ) #119 in Coaxial Car Speakers
Brand	GRS
Built-In Media	Subwoofer, speaker cables, mounting hardware
Color	Black
Compatible Devices	Laptop, Personal Computer, Smartphone
Compatible with Vehicle Type	Car
Connectivity Protocol	Bluetooth
Connectivity Technology	Auxiliary
Control Method	Touch
Controller Type	Button
Customer Package Type	FFP
Customer Reviews	5.0 5.0 out of 5 stars (1)
Enclosure Material	ferrite
Frequency Response	20000 Hz
Impedance	4 Ohms
Is Waterproof	FALSE
Item Dimensions D x W x H	8.1D x 9.4W x 5.1H centimeters
Item Weight	318 g
MP3 player	No
Manufacturer	GRS
Maximum Range	15 Meters
Model Name	1
Model Number	1
Mounting Type	Bar Mount
Number of Audio Channels	5.1
Number of Items	1
Power Source	Corded Electric
Speaker Maximum Output Power	25 Watts
Speaker Size	3 Inches
Speaker Type	Surround Sound
Specific Uses For Product	Construction, Home Theater
Subwoofer Connectivity Technology	Wired
Subwoofer Diameter	3 Inches
Tweeter Diameter	1 Inches
UPC	848864015194
Warranty Type	Limited
Water Resistance Level	Not Water Resistant
Wireless Technology	Bluetooth
Woofer Diameter	3 Inches

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