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Deal.ai › Yamaha › Subwoofers
Yamaha
Yamaha True X Sub 100A Wireless Subwoofer

Yamaha True X Sub 100A Wireless Subwoofer

4.7(15 ratings)

Best price now

$79.00at MercariObserved at 10:17 AM

60% under what the other stores charge

Compared across 10 stores. Prices are checked against each store and labelled with when.

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Price facts

  • Lowest price today: $79.00 at Mercari (checked Nov 9, 2026).
  • Checked at 10 stores.

Our take on the Yamaha True X Sub 100A Wireless Subwoofer

The Yamaha True X Sub 100A is a slim wireless subwoofer built to add low bass to Yamaha's True X sound bar and speaker systems. Its 6.3-inch side-firing cone and 100 W amplifier cover roughly 35 Hz to 100 Hz, and its narrow cabinet fits beside a TV or couch where a boxy sub would not. It is not a standalone sub: it pairs wirelessly with True X components rather than working with any receiver. Owners rate it highly for the extra weight it gives movies and music, though its bass depth and output are modest next to larger subs.

Best forOwners of a Yamaha True X sound barSmall or medium roomsLiving rooms where floor space is tightMovie and music listeners wanting fuller bass
Pros
  • Very slim cabinet fits in narrow gaps
  • Wireless pairing with True X systems, no cable run
  • Adds clear low-end weight to a sound bar
  • Bass-reflex cabinet with a 6.3-inch side-firing driver
  • Simple setup with the True X app
Cons
  • Only works within the Yamaha True X ecosystem
  • Output is modest for large rooms
  • Bass rolls off around 35 Hz, so deep movie rumble is limited
  • Single driver, no stereo or dual-sub option

Yamaha True X Sub 100A Wireless Subwoofer prices at every store

  • MercariNew

    In stock

    $79.00Observed at 10:17 AM
    Visit Mercari
  • CrutchfieldPre-owned

    In stock

    $180.45Observed at 10:17 AM
    Visit Crutchfield
  • TargetNew

    In stock

    $199.95Observed at 10:17 AM
    Visit Target
  • Best BuyNew

    In stock

    $199.95Observed at 10:17 AM
    Visit Best Buy
  • Macy'sNew

    In stock

    $199.95Observed at 10:17 AM
    Visit Macy's
  • ABC WarehouseNew

    In stock

    $199.95Observed at 10:17 AM
    Visit ABC Warehouse
  • AdoramaNew

    In stock

    $199.95Observed at 10:17 AM
    Visit Adorama
  • Hi-Fi HeavenNew

    In stock

    $199.95Observed at 10:17 AM
    Visit Hi-Fi Heaven
  • Electronics ExpoNew

    In stock

    $199.95Observed at 10:17 AM
    Visit Electronics Expo
  • eBayOpen box

    Availability unknownSold by ea1180 (100% positive, 256 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $79.99+ $18.74 shippingVerified
    Visit eBay
  • eBayNew

    Availability unknownSold by limasamson (0% positive, 1 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $80.00+ $24.36 shippingVerified
    Visit eBay
  • eBayRefurbished

    Availability unknownSold by retail_outlet_direct (99.3% positive, 35,500 ratings)Returns: Set by the eBay seller; the eBay Money Back Guarantee covers an item that doesn't arrive or isn't as described.

    $128.99Free shippingVerified
    Visit eBay

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Yamaha True X Sub 100A Wireless Subwoofer price history

Lowest price we've seen: $79.00 on Nov 9 at Mercari. Tracked across 9 stores since Nov 9.

What reviewers say

  • 4.7 / 515 ratings

Owners give it strong marks for the bass boost it brings to True X sound bars and for its narrow footprint. Most criticism centers on its limited output and its dependence on Yamaha's ecosystem.

What people mention
  • Bass outputMixedOwners say it adds real weight to movies and music but runs out of steam in large rooms.
  • SizePraisedThe narrow cabinet is easy to tuck beside furniture or a TV stand.
  • SetupPraisedWireless pairing with True X gear is quick and needs no cable run.
  • CompatibilityCriticisedIt only works with Yamaha True X systems, not with other receivers or sound bars.
  • Low-end depthCriticisedBass rolls off around 35 Hz, so the deepest movie effects are softened.

Specifications

Outdoor
No
Frequency Response
35 Hz - 100Hz
Design Highlights
Slim profile (7-3/8" wide)
Bluetooth
Yes
Connectivity Technology
Wireless
Ports And Interfaces
HDMI
Wi-Fi
Yes

Questions and answers

Does the True X Sub 100A work with any sound bar?
No. It pairs wirelessly only with Yamaha True X components, such as the True X sound bars and speakers. It will not connect to other brands or to a standard AV receiver.
How deep does the bass go?
Yamaha rates it from 35 Hz to 100 Hz. That covers most music and everyday movie bass, but it will not deliver the sub-20 Hz rumble of a large dedicated sub.
Can I add a second sub?
The system supports one wireless sub per True X setup in typical use. Check your sound bar's app for whether a second unit can be paired.
What is in the box?
The subwoofer, a power cord and setup documentation. No audio cable is needed because it connects wirelessly.
Is it good for a large living room?
It suits small to medium rooms best. In a large or open space its 100 W amplifier and single 6.3-inch driver may not fill the room.
Does it need a wired connection?
No. It pairs wirelessly to the True X system and only needs power from a wall outlet.
Where is the Yamaha True X Sub 100A Wireless Subwoofer cheapest?
At Mercari, for $79.00, 60% under what the other stores charge, as of our latest check.
What do buyers say about the Yamaha True X Sub 100A Wireless Subwoofer?
Rated 4.7 out of 5 from 15 ratings.
Where can I buy the Yamaha True X Sub 100A Wireless Subwoofer?
10 stores we checked sell it, including eBay, Mercari, Crutchfield, Target, Best Buy.

Stores we've priced the Yamaha True X Sub 100A Wireless Subwoofer at

  • Adorama deals and prices
  • Best Buy deals and prices
  • Electronics Expo deals and prices
  • Macy's deals and prices
  • Target deals and prices

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Smart Functions
Smart compatible
Amplifier Power
100 W (Subwoofer)
Speaker Placement
Tabletop Mount
Audio Configuration
Bass-Reflex
Audio Highlights
Extra bass
Audio Channels
Surround
Driver Size
6.3 in (cone-type)
Driver Configuration
Side-Firing
Driver Type
Cone-type driver
Number Of Drivers
1
Max Output Power
100 Watts
Nominal Output Power
100 watts (RMS Power)
Max Wattage
40 W (power consumption)
Nominal Impedance
5 Ohms
Weight
20.7 lbs
Depth
40.7 cm
Height
16 in