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

Grs 3fr 4 Full Range 3 Speaker Driver 4 Ohm

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Sold byAmazon JapanDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

🔊 Elevate your sound game with GRS — where compact meets clarity!

COMPACT YET MIGHTY - 3-inch driver size fits seamlessly into any space without compromising rich, full-range sound.
CRYSTAL CLEAR SOUND - Form surround with coated paper cone delivers pristine audio clarity for your home theater or car setup.
SEAMLESS CONNECTIVITY - Bluetooth and AUX support make integration with smartphones, laptops, and PCs effortless.
RELIABLE BUILD QUALITY - Durable pink cushion frame and economical ferrite magnet assembly engineered by GRS for lasting performance.
POWER OPTIMIZED PERFORMANCE - 4 Ohm impedance ensures efficient power handling and compatibility with a wide range of devices.

The GRS 3FR-4 is a 3-inch full-range speaker driver with 4 Ohm impedance, designed for clear, immersive sound in home theaters and vehicles. Featuring a coated paper cone with foam surround, a pink cushion frame, and a ferrite magnet assembly, it offers reliable performance backed by a 1-year limited warranty. Compatible with Bluetooth and AUX inputs, it’s a compact powerhouse for professional-grade audio setups.

Specifications

ASIN	B00K2ESJZ2
Amazon 売れ筋ランキング	車＆バイク - 954,060位 ( 車＆バイクの売れ筋ランキングを見る ) 車載用コアキシャルスピーカー - 467位
MP3プレーヤー付属	いいえ
UPC	848864015194
おすすめ度	4.3 5つ星のうち4.3 (563) var
お客様の年齢層	大人
インピーダンス	4 オーム
ウーファードライバーの直径	3 インチ
オーディオアウトプットモード	サラウンド
オーディオドライバーの種類	ダイナミックドライバー
カラー	ブラック
コネクティビティプロトコル	Bluetooth
サブウーファースピーカーの直径	3 インチ
サブウーファー接続技術	有線
スピーカーの種類	サラウンドサウンド
スピーカーサイズ:(cm)	3 インチ
スピーカーチャンネル構成	3.0
ブランド名	GRS
メーカー名	GRS
レンズマウントの種類	テーブルトップマウント
互換デバイス	スマートフォン, スマートフォン。, ノートパソコン, ノートパソコン。, パソコン。
付属品総数	1
保証タイプ	限定保証
同梱商品	スピーカー x 1。
周波数応答	20000 Hz
品目の寸法（D x W x H）	8.1奥行き x 9.4幅 x 5.1高さ cm
商品の推奨用途	Home Theater,Construction
商品の用途	建設、ホームシアター。
商品の追加説明1	サブウーファー
商品の重量	0.7 ポンド
商品外装素材	フォーム、紙、金属。
型番	1
最大レンジ	15 メートル
最大出力	25 ワット
梱包タイプ	FFP
無線タイプ	Bluetooth
管理方法	音声
車両の種類と互換性がある	乗用車
通信・接続インターフェース	AUX
防水	FALSE
電源のタイプ	電源コード

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