Why Choose Crutchfield?
Great gear and expert advice
Our experts help you pick the ideal gear for your needs.Meet our advisors
Free tech support for the life of your gear.Read about our one-on-one expert help
You may return items that are complete and like new for any reason within 60 days.See the details of our return policy
Earn one point for every dollar you spend and use those points to save on future purchases.Get full details on Crutchfield Rewards
Deep discounts on car installation gear
We offer vehicle-specific installation instructions, dash kits, wiring harnesses, and speaker accessories at deeply discounted prices with car stereo and speaker purchases. Available for most vehicles.Learn more
Trusted since 1974
Our customers have trusted us with their business, and they’ve helped us win awards for our service.Check out our most recent awards
The manufacturer’s warranty always applies.See more details
Item # 158SAWM20 | MFR # SA-WM20
This item is no longer available.
Our take on the Sony SA-WM20
Compact, and super-affordable, Sony's SA-WM20 is an easy way to add some extra bass to just about any home theater or music system. It features a built-in 50-watt amplifier and a 8" long-throw woofer for solid, punchy lows. A phase switch and crossover control let you easily match the SA-WM20's output to your other speakers. Nice features, great price!
- 50-watt amp
- 8" long-throw woofer
- frequency response 28-200 Hz
- continuously variable 50-200 Hz low-pass crossover
- speaker-level inputs
- line-level input
- phase switch
- black vinyl finish
- 10-5/8"W x 12-3/4"H x 15-1/8"D
- warranty: 1 year
Features and Specs
|Woofer Size (inches)||8|
|Low-Pass Crossover Freq||50-200Hz|
|High-Pass Crossover Freq||None|
|Amplifier Output (watts)||50|
|Frequency Response||28-200 Hz|
|Speaker Parts Warranty||1 YEAR|
|Speaker Labor Warranty||1 YEAR|
|Amplifier Parts Warranty||---|
|Amplifier Labor Warranty||---|
Advanced SAW Design: Combining a specialized speaker for deep bass with a built-in amplifier to provide power, this component features Sony's patented subwoofer design. In addition, this Super Acoustically Loaded product provides bass all the way down to the lowest musical frequencies (28 Hz) from a compact cabinet.
Woofer: The SA-WM20 has a 8" long-throw woofer for deep, accurate bass.
Amplifier: The 8" long-throw woofer is powered by a 50-watt amplifier.
Surround: For a smoother response and improved durability, the woofer uses a rubber surround.
Bass Port: There is a front-firing bass port for improved bass response.
- Power Button: turns the subwoofer amplifier on or off
- Level Control: rotary subwoofer level control
- Cut Off Frequency: variable low-pass crossover adjustable from 50-200Hz
- Phase Switch: allows you to select normal or reverse for best bass
- Power Indicator: illuminates in green when the subwoofer is receiving power
- Line In: one RCA pre-amp level input
- Speaker-Level Input/Speaker-Level Output: spring clips for speaker-level input and output
Our Product Research Team
At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.