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Sony XS-GS1621C

640W 6.5" 2-Way GS-Series Component Speaker System w/ Soft Dome Tweeters, Bi-amp design, & 3-year warranty!

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List price $279.99

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Sony XS-GS1621C

640W 6.5" 2-Way GS-Series Component Speaker System w/ Soft Dome Tweeters, Bi-amp design, & 3-year warranty!


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NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!



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Sony XS-GS1621C



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Special Price $0 ($10.99 if purchased separately)


• Eliminates Road Noise
• Quiets Vibrations
• Stops Annoying Rattles
• Increases SPL
• Reduces Heat
• Simple To Install
• Peel and Stick Installation
• Two 10" x 10" Pieces

50% Off a Pair of Sony XS-GS1621C with MEX-XB100BT Purchase!

For a limited time receive 50% Off a pair of Sony XS-GS1621C Speakers when you buy a Sony MEX-XB100BT Hi-Power Bluetooth Receiver. This offer cannot be combined with any other coupons or offers.




Sony MEX-XB100BT



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Sony XS-GS1621C


Special Price $89.99 ($179.99 if purchased separately)

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Sony XS-GS1621C

GS Quality Components

The GS Series woofers utilize Mica Reinforced Cellular (MRC) and Kevlar Aramid fiber for an extremely light, rigid cone that produces exceptionally accurate mid-range and low-end with minimal distortion. The 1-inch synthetic fabric soft dome tweeter is designed for crisp, transparent highs with an incredibly high-frequency response.

Flexible Performance Options

The drivers use separate power inputs for each component of the 2-way system. This lets you drive the speaker system with dedicated power for the High Pass and Low Pass channels, instead of sharing power. This converts your Amplifier into the main crossover, and thereby providing a proper "Active" setup.



General Features:

  • 6-1/2" GS Series 2-Way Component Car Speakers
  • Power Handling:
    • Peak: 640 watts per set / 320 watts per side
    • Rated: 150 watts per set / 75 watts per side
    • CEA 2031 RMS: 240 watts per set / 120 watts per side
  • Recommended Power Range: 10 - 120 watts RMS per channel
  • Mica reinforced cellular and Kevlar aramid fiber cone
  • Rubber surround
  • 1" synthetic fabric dome tweeter
  • Ferrite high energy magnet (woofer)
  • Neodymium high energy magnet (tweeter)
  • 2-way crossover network
  • Bi-amp design input
  • 4 ohms impedance
  • Frequency Response: 30 - 30,000 Hz
  • Woofer Top-mount Depth: 2-1/4"
  • Woofer Cutout Dimensions: 5-1/8"
  • Tweeter Top-mount Depth: 1/2" (flush mount)
  • Tweeter Cutout Dimensions: 1-5/8" (flush mount)
  • Sensitivity: 87 dB 1 watt / 1 meter , ±2 dB
  • CEA-2031 compliant speakers
  • Matching Amplifier:
  • Authorized Internet Dealer
  • 3 Year Manufacturer's Warranty

Priced Per Complete Component System: 2 midwoofers, 2 tweeters and 2 crossover networks.

Check out the Sony XS-GS1621C Owner's Manual

Product History:

Sony XS-GS1621C thumbnail
(newest, current model)
Sony XS-GS1720S thumbnail
(previous model, replaced by Sony XS-GS1621C)

Speaker Specifications

This is the manufacturer product line of speakers.
GS (Sony)
Priced Per
Car Speakers are typically sold in pairs so you will receive 2 speakers for each speaker purchase on speakers marked "Priced Per Pair". If a speaker is marked "Priced Per Each" then the speaker is sold individually and each purchase you make will result in 1 speaker. High-powered tweeters, midrange and full-range pro audio for car speakers are typically sold per each speaker.
Speaker Size
Refers to the size of the speaker measured in inches. Every vehicle has standard application sizes. Please use our vehicle fitment guide for your vehicle's specific speaker sizes if you do not know them.
The number of individual drivers in a car speaker. Speakers with 2 drivers are known as a 2-way, and 3 drivers are known as a 3-way. Component systems are often referred to as "separates" because the tweeter is not attached to the midwoofer (main speaker driver) and mounts separately in a location such as a door post. Component systems typically come with an external crossover so you can easily adjust the high and low frequencies sent to both the midwoofer and the tweeter. Center channel speakers are great for those looking to have surround sound in their vehicle.
2-way Component System
Tweeter Design
Designs such as cone, dome, semi-dome, balanced dome, and whizzer are most popular. Cone tweeters are simple, efficient and typically are the most reasonably priced. Dome tweeters are used in most home speakers, and provide a smoother and more accurate sound. Semi-dome design is one with a dome placed inside a cone. A Balanced dome driver is a semi-dome with equal reproduction area given the cone and dome portions of the driver. A whizzer tweeter is a separate tweeter cone driven by the voice coil of the woofer.
Tweeter Size
Refers to the size of the tweeter. Typically, smaller tweeters produces less output with higher frequency response.
Tweeter Composition
Materials such as polypropylene, silk, cloth, and paper are the most common, where as many more recent tweeters are now manufactured with composites such as Aluminum, Titanium, Mylar, and other materials.

PEI is an acronym for "Polyetherimide" which is an amorphous, amber transparent, high-performance thermoplastic.

Woofer Composition
Lightweight woofer cone materials are essential for efficient operation. Poly cones produce exceptional sound and are sturdy against various changes in temperature. Paper cones are very efficient, and when treated for moisture resistance, will perform at a high level. Poly refers to polypropylene, which is thermoplastic or fibers that are polymers of propylene. IMPP refers to injection molded polypropylene, a commonly used process and material in speakers.
Mica Reinforced Cellular Glass-Fiber
Woofer Surround
A speakers surround is part of the suspension system. The surround protects the cone and prevents it from being displaced as it flexes out from the basket. It is usually made of a durable material like treated foam or rubber in order to withstand the strenuous job of producing bass frequencies.
Peak Power Handling
Peak power handling refers to the amount of power a speaker can handle during a brief musical burst. The RMS power range figure is a much more reliable rating for determining the speaker's power requirements. The Peak power handling specification is typically rated per speaker unless otherwise noted.
320 watts
RMS Power Handling
The RMS power is the amount of power the speaker requires to operate safely and properly. RMS Power Handling refers to the amount of power a speaker can handle on a continuous basis. We recommend powering your speakers or subwoofer with 80%-120% of its recommended RMS rating. The RMS power handling specification is typically rated per speaker unless otherwise noted.
75 watts
An efficiency or sensitivity rating tells you how effectively a speaker converts power into sound. The higher the number, the more efficient the speaker and the louder it will play with the same input power. An efficient speaker helps you maximize your available power. Most sensitivity ratings measure the speaker's output with 1 watt of input, 1 meter from the speaker. Some speakers' sensitivity is measured with 2.83 volts of input, instead of 1 watt.
Efficiency (1w/1m) is not an accurate indicator of a subwoofer's output capability and should not be used as a comparison to other speakers or subwoofers to determine which one is "louder".
87 dB
Frequency Response
The range of frequencies the speaker will reproduce (lowest frequency to the highest). Bigger is better, meaning the wider the range, the better. The optimal range is 20 - 20,000 Hz (which is the range of human hearing).
30 - 30000 Hz
Impedance (Per Voice Coil)
The load value (in ohms) that the speakers present to the amplifier per voice coil - the amount of resistance to the current flow. This is a key specification as subs wired in parallel or low impedances can create problems with your amplifier and potentially void all warranties. We encourage you to ask our support department prior to purchase if you do not understand which impedance level will suit your application best.
4 ohms
Shallow Mount Installation
This means that the subwoofer/speaker is designed to be installed in areas that do not have a lot of space. Shallow mount subwoofers are typically found under a seat or behind the seat in some trucks.

Shallow mount speakers will typically have a mounting depth of 2" or less, while shallow mount subwoofers will typically have a mounting depth of 3" or less.

Top-Mount Depth
The depth when installed on top of the mounting surface. Measured from the bottom of the speaker's magnet to the bottom of the mounting holes on the rim of the speaker.
Cutout Dimensions
Refers to the dimensions of the hole, measured in inches, required to contain the speaker.
Speaker Grilles
A grating or screen of metal or plastic bars or wires, mounted in front of a speaker as protection. If yes, the speakers will include matching speaker grilles. If no, there are no grilles included.
Number of Speakers
This is the number of speaker that is included in the package. Each purchase will result in receiving the number of speakers indicated here. Please note that some items will have multiple woofers in the same enclosure. For sets of component speakers, this number will refer to the number of sets of speakers (For example, 2 would indicate the purchase includes 2 woofers and 2 tweeters).

Please refer to the product image and description for further details about the speaker.

2 Woofers + 2 Tweeters

Warranty and Return Policy

Parts Warranty Duration
3 years
Labor Warranty Duration
3 years
Warranty Provider

Summary of Customer Ratings & Reviews

Rating Distribution

5 Star
4 Star
3 Star
2 Star
1 Star

Average Attribution Rating



Upgrades in my FoST

December 17, 2014

I am using these speakers with my stock MFT sony head unit and they sound great. The awesome thing about these is the Bi-Amp design so if you have separate channels for most of your speakers, Like the Focus ST does... you can get the clean sound you have been looking for with a good little thump too. Drums come through great on the woofers and the tweeters are balanced well. The grills for these speakers look well designed and are attractive.

30 of 50 found this helpful

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Accessory Tools and Products

Accessories added

NVX 25 ft. of True Spec 12 Gauge Speaker Wire

100% OFC wire with EnvyFlex metallic jacket insulates and protects against damage from extreme conditions.

Your Price $39.99

Streetwires 25 ft. of True Spec 12 Gauge Speaker Wire

You need speaker wire to connect your speakers!

Your Price $44.95

Belva 23 ft. of True Spec 12 Gauge Speaker Wire

100% Copper Clad Aluminum, high strand count with ultra-flexible PVC blended jacket for easy installation

Your Price $14.99

Car Stereo and Speaker Installation Tool Kit

Includes Test Light, Crimp/Splice Tool, Multi-bit Screwdriver and more.

Your Price $16.99

NVX XTGSP2 Tone Generator and Speaker Polarity Tester

Perfect for safely troubleshooting and testing audio systems

Your Price $29.99

Belva Five Piece Installer's Panel Removal Tool Kit

Easily removes dash/trims, door clips, panels and pins, rubber grommets and vehicle emblems.

Your Price $11.99

3 in 1 Wire Quick Splice T-Tap and Butt Connector Crimper + Wire Cutter

Used for cutting copper and aluminum wires up to 8 gauge.

Your Price $29.99

Universal Wire Puller & Grabber

Running wires has never been easier! This wire puller allows you to run wires through those hard to reach places!

Your Price $6.99

NVX SDDK12 Door Kit

Eliminates speaker panel distortion and reduces door vibration, rattles and squeaks!

Your Price $39.99

Stinger Roadkill Door Kit

Use this to eliminate rattle from your doors!

Your Price $54.99

NVX Sound Dampening Rubber Roller

Install your Sound Dampening with ease using this heavy duty rubber roller!

Your Price $6.99

12-10 AWG Butt Connectors

These yellow butt connectors are ideal when connecting thicker speaker wire your new aftermarket speakers.

Your Price $5.99

12-10 AWG Yellow T-Tap Adapters

Allows for fast and easy splicing of wires by easily tapping into the cable.

Your Price $4.99

12-10 AWG Quick Disconnect Connectors

These yellow quick disconnect connectors make it easy to connect and disconnect speaker wire your to your new aftermarket speakers!

Your Price $6.99

Speaker Baffles for your Speakers

Enhance the sound of your speakers with these easy to install speaker baffles.

Your Price $9.99

XTC 6-1/2" Round Large Frame, Shallow Foam Speaker Baffles

Creates a tight seal behind speaker for enhanced audio quality.

Your Price $12.99

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Browse 2 questions and 2 answers
Hide answersShow all answers | Sort by
Hi, i see that these speakers have two different ratings for power.
one being rms power @ 120w and rated power @ 70w.
which do i follow when choosing an amp for this set of speakers?
rowan m on Mar 28, 2015
Best Answer: Hello Rowan,

Each SIDE (i.e. 1 Tweeter, 1 Mid, 1 Crossover) is asking for ~75w RMS. Which means the amp you choose must provide ~75w RMS Per Channel. For example, the matching amp for this set is the Sony XM-GS400, providing exactly 70w RMS per channel.

Sony XM-GS400
Reply · Report · Rick MStaff on Mar 30, 2015
· Add Answer · I Have This Question Too (2)
what is the best amplifier for sony gs1621c speakers?
Karl V on Jan 2, 2015
Best Answer: Hello Karl,

The matching amp for the XS-GS1621C is the Sony XM-GS400 . The 70w RMS rating of the amp is a Conservative figure, and is known to provide slightly more. However, you aren't limited to Just that amp; You are free to pick any amp that provides ~75w RMS @4ohms, like the Kenwood eXcelon XR400-4.
Reply · Report · Customer SStaff on Jan 3, 2015
· Add Answer · I Have This Question Too (0)

Product Summary


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Internal SKU


Internal Product ID


Sonic Electronix Wiring Guide

Wiring Diagram Legend

Warning: The image depicted shows the resistance change when wiring multiple subwoofer terminals. Please refer to your subwoofer's owner's manual for the proper wiring of its terminals. Sonic Electronix, Inc. is not responsible for damage caused to your audio system or vehicle due to improper installation. Please call tech support at 1-877-289-7664 if you require additional assistance.

Product Name: Sony XS-GS1621C

  • Sony GS Series Speakers
  • NEW! Sony GS Series Car Speakers | CES 2014