BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers

BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers — image 1
BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers — image 2
BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers — image 3
BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers — image 4
BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers — image 5
69%
31%
88%
Value for Money
76%
Sound Clarity
47%
Bass Output
58%
Tweeter Performance
91%
Installation Ease
63%
Build Quality
93%
Compatibility
54%
Frequency Range
67%
Sensitivity & Volume Output
79%
Mounting Depth & Fitment
61%
Durability Over Time
55%
Packaging & Included Accessories
62%
Aesthetics & Appearance
More

Overview

The BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers are a no-frills OEM replacement aimed squarely at drivers who need a quick, affordable upgrade over worn factory speakers. Released in late 2021, these BOSS door speakers have carved out a respectable spot in a crowded budget category — landing at #65 in Car Coaxial Speakers on Amazon is no small thing at this price tier. The 2-way coaxial design bundles woofer and tweeter into one compact unit, keeping installation refreshingly simple. At under 2 lbs for the pair, they are easy to handle, and the flush-mount setup means most DIYers can get them seated properly without specialized tools or adapter brackets.

Features & Benefits

These BOSS door speakers run at 4-ohm impedance, making them compatible with virtually any factory or entry-level aftermarket head unit right out of the box. That 140W figure on the packaging is a peak rating, not continuous RMS power — in practice, a standard car stereo drives them just fine without clipping. Frequency response runs from 100Hz to 18kHz, covering mids and highs with reasonable clarity, though you should not expect meaningful low-end output from a 3.5-inch cone. The 1-inch piezoelectric tweeter handles high frequencies without needing a separate crossover. A poly injection cone with rubber surround adds solid resistance to the humidity and temperature swings a car interior regularly throws at speakers.

Best For

This budget coaxial pair makes the most sense for drivers replacing dead or muffled factory speakers in compact cars where 3.5-inch is the standard door or dash fitment. First-time DIY installers will appreciate how uncomplicated the process is — standard wiring connections, a shallow 1.44-inch mounting depth, and a 3.1-inch mounting hole that fits many factory cutouts without modification. The CH3220B speakers also work well in secondary positions like rear decks or fill locations in vans and small buses. If deep bass or audiophile-grade clarity is the goal, these are not the right tool. But for a practical factory upgrade on a tight budget, they punch right where they are supposed to.

User Feedback

Buyers consistently single out improved vocal clarity as the most noticeable step up from factory units, with mid-range detail getting the most praise. The overall value sentiment is strong — most owners feel they got more than their money's worth. That said, two complaints surface regularly. First, bass is genuinely thin, and some buyers are caught off guard expecting more low-end; being realistic about that going in helps. Second, a handful of users find the piezoelectric tweeter sounds harsh or fatiguing at high volumes. Installation is largely straightforward, though a few specific vehicle fitments required adapter plates. Long-term durability feedback is cautiously positive, with the stamped basket and budget construction holding up for most, but not impressing buyers used to sturdier hardware.

#Coaxial Speakers
#Speakers
#Car Audio
#Car Electronics
#Car & Vehicle Electronics
#Electronics

Pros

  • Noticeable mid-range clarity improvement over worn or stock factory speakers in compact vehicles.
  • Plug-and-play 4-ohm impedance works with virtually every factory and entry-level aftermarket head unit.
  • Shallow 1.44-inch mounting depth fits tight door cavities where deeper speakers simply will not clear.
  • Lightweight and easy to handle solo during a DIY install — no second pair of hands required.
  • The CH3220B speakers hold up reasonably well in temperate climates with normal everyday use.
  • Rubber surround is a smarter long-term choice than foam, resisting moisture and temperature changes better.
  • A genuinely strong value proposition for anyone upgrading from buzzing or blown OEM speakers on a tight budget.
  • No crossover network needed — the 2-way coaxial design keeps installation wiring clean and simple.
  • Solid Amazon ranking at #65 in Car Coaxial Speakers reflects real-world buyer satisfaction at this price tier.

Cons

  • Bass output is genuinely thin — the 100Hz low-end limit is not a spec footnote, it is audible.
  • The piezoelectric tweeter can sound sharp and fatiguing during extended high-volume listening sessions.
  • The 140W rating is peak power only; real continuous handling capacity is considerably lower and often misunderstood.
  • Stamped steel basket and lightweight materials feel noticeably budget-grade compared to similarly priced rivals.
  • No mounting hardware or wire connectors are included, which catches first-time installers off guard.
  • Sensitivity at 88dB means underpowered factory systems may struggle to drive these BOSS door speakers to satisfying volumes.
  • Surround material shows early wear in vehicles exposed to extreme heat or high interior humidity regularly.
  • Fitment is not universal — some vehicle makes require adapter plates that add cost and installation time.
  • Sound quality deteriorates noticeably when the head unit is pushed past moderate volume levels.

Ratings

The BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers were evaluated by our AI rating system after processing thousands of verified global buyer reviews, with spam, incentivized, and bot-generated feedback actively filtered out. The scores below reflect a transparent, balanced picture of where these BOSS door speakers genuinely deliver and where they fall short. Both consistent praise and recurring frustrations are weighted into every category.

Value for Money
88%
Most buyers in this tier are hunting for the best sound improvement per dollar spent, and the CH3220B speakers consistently deliver on that narrow brief. Owners replacing buzzing or completely silent factory units report feeling like they got far more than they paid for, especially given the overall clarity boost.
A small segment of buyers who compared these against similarly priced competitors found marginally better build or sound elsewhere. The value equation is strong, but it is not uncontested in this highly competitive budget bracket.
Sound Clarity
76%
24%
Mid-range clarity is the standout strength here. Vocals on podcasts and talk radio come through noticeably cleaner than typical OEM speakers, and most users on daily commutes report a satisfying bump in overall intelligibility without any tuning required.
Clarity begins to break down at higher volumes, where some harshness creeps in — particularly in the upper frequencies. The sound profile is serviceable for casual listening but reveals its limits quickly if you push the head unit past 70 percent volume.
Bass Output
47%
53%
For a 3.5-inch driver, the low-end handling is physically constrained, and buyers who accept this upfront are not disappointed. The speakers handle bass-light genres like talk radio, country, and classic rock without obvious strain.
This is the most common complaint by a wide margin. The 100Hz lower frequency limit means bass is genuinely thin, and buyers expecting thumping low-end from these small cones are routinely let down. Pairing with a subwoofer is essentially required for any bass-forward music listening.
Tweeter Performance
58%
42%
The 1-inch piezoelectric tweeter does add a layer of high-frequency detail that most comparable factory speakers lack entirely. At moderate listening volumes, hi-hats and string instruments sound reasonably present and separated from the mid-range.
Piezoelectric tweeters are a known trade-off in budget coaxials — they can sound sharp or fatiguing over extended listening sessions, and several buyers specifically called out harshness at higher volumes. Listeners sensitive to treble may find the highs grating rather than refined.
Installation Ease
91%
This is one of the biggest selling points for first-time DIY installers. The 1.44-inch mounting depth and standard 3.1-inch mounting hole fit a wide range of compact door cavities without adapter rings, and the wiring connections are entirely plug-and-play with most factory harnesses.
A fraction of buyers encountered fitment challenges in specific vehicle makes where the door cavity geometry or factory grille spacing did not align cleanly. In those cases, adapter plates were needed, adding minor cost and complication to what should be a simple swap.
Build Quality
63%
37%
The poly injection cone and rubber surround are practical choices for an entry-level car speaker — rubber surrounds in particular hold up better than foam alternatives in the heat and humidity of a car interior over time. Most users report no issues within the first year of use.
The stamped steel basket and lightweight overall construction do feel budget-grade when handled directly. Buyers coming from mid-range brands notice the difference in material density immediately, and a minority of long-term users have reported cone flex or surround degradation after extended use in extreme climates.
Compatibility
93%
Four-ohm impedance is essentially the universal standard for car audio, meaning these budget coaxials plug straight into the vast majority of factory and aftermarket head units without any impedance mismatch concerns. Compatibility complaints are nearly nonexistent across the review pool.
The 88dB sensitivity rating is adequate but not high, meaning a weak factory amplifier may not drive them to satisfying volumes. In vehicles with particularly underpowered OEM audio systems, some users noted the speakers never quite reached the loudness they expected.
Frequency Range
54%
46%
The 100Hz to 18kHz response covers the mid and upper registers well enough for spoken-word content, pop, and acoustic music. Within that range the speakers perform reasonably consistently without major dips or peaks that cause obvious coloration.
The hard 100Hz lower limit is not a technicality — it is an audible ceiling on low-end reproduction. Anything below that, including kick drums, bass guitars, and deep electronic tones, is simply absent. The frequency window is narrow for music listeners with varied tastes.
Sensitivity & Volume Output
67%
33%
At moderate listening levels driven by a typical factory radio, these BOSS door speakers reach comfortable daily-use volumes without needing an external amplifier. For commuters who listen at reasonable levels, sensitivity is a non-issue.
At 88dB per watt, they are not especially efficient compared to some competitors in the same segment. Buyers who like loud listening or have older factory systems with limited output power may find the maximum achievable volume underwhelming without adding an amp.
Mounting Depth & Fitment
79%
21%
The 1.44-inch mounting depth is genuinely shallow, which is a meaningful advantage in compact vehicles where door panel clearance is tight. Most small sedan and hatchback door cavities accommodate these without modification or spacer rings.
While shallow depth helps in most cases, the 3.1-inch mounting hole is a specific dimension that does not fit every factory cutout. Owners of certain Japanese-market compact models reported needing to slightly enlarge or adapt the existing hole, which adds time to the install.
Durability Over Time
61%
39%
For a budget pair, these hold together reasonably well in normal year-round conditions. Buyers in temperate climates who use their cars casually report no degradation in sound or physical condition after a year or more of daily use.
Heat and humidity are the real adversaries here. Users in hotter climates or vehicles that see significant interior temperature swings have noted faster wear on the surround material and occasional rattling that develops over time. Long-term reliability is genuinely mixed at this price point.
Packaging & Included Accessories
55%
45%
The pair arrives packaged adequately to prevent shipping damage, and including an instruction manual is a genuine help for first-time installers who want a reference during the swap process.
No mounting hardware, wire connectors, or grilles are included in the box, which surprises some buyers who expect at least basic accessories at this price. Sourcing compatible mounting screws separately is a minor but real inconvenience for new DIYers.
Aesthetics & Appearance
62%
38%
The clean black finish looks presentable and unobtrusive once seated behind a factory or aftermarket grille. Most buyers never see the speakers after installation, so appearance is a low-stakes factor, but the look is acceptable for those with visible door panels.
The stamped basket and molded cone do not convey premium quality when visible. Buyers who leave speakers exposed in custom door panels or want an upscale visual presentation will find the budget aesthetic a poor fit for finished interior builds.

Suitable for:

The BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers are a strong pick for drivers who need to replace dead or degraded factory speakers without spending serious money or booking a professional installation. If your compact car, hatchback, or small sedan came with underwhelming OEM audio and the door cavities call for a 3.5-inch fitment, this budget coaxial pair slots in with minimal hassle. First-time DIY installers will appreciate the shallow 1.44-inch mounting depth and standard 4-ohm impedance that plays nicely with virtually any factory head unit right out of the box. They also work well as fill speakers in secondary positions — rear decks, dash locations, or even bus installs where the goal is basic audio coverage rather than hi-fi performance. If your listening habits lean toward podcasts, talk radio, audiobooks, or casual background music at moderate volumes, these BOSS door speakers will deliver a noticeable and satisfying upgrade over what most manufacturers ship from the factory.

Not suitable for:

The BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers are simply the wrong tool for buyers who care deeply about sound quality, bass response, or long-term build durability. The 100Hz lower frequency limit is a hard physical constraint — no amount of EQ tuning will conjure meaningful bass from a 3.5-inch cone, so if hip-hop, EDM, or bass-heavy rock is your daily soundtrack, you will be disappointed without adding a dedicated subwoofer. Audiophiles or anyone upgrading from a mid-range or premium speaker setup will likely find the piezoelectric tweeter harsh at higher volumes and the overall sound profile too thin and colored for critical listening. The stamped basket and budget-grade construction also give pause for buyers in hot or high-humidity climates, where surround material degradation can become a real issue over time. If you are building a custom door panel where speakers are visible, the utilitarian appearance of this budget coaxial pair is not going to impress. And if your vehicle's factory amplifier is already underpowered, the 88dB sensitivity rating means you may never get the volume levels you are hoping for.

Specifications

  • Speaker Size: Each speaker measures 3.5 inches in diameter, making this pair a direct replacement for small-format factory door, dash, or rear-deck positions.
  • Configuration: 2-way coaxial design integrates the woofer and tweeter into a single unit, eliminating the need for separate component mounting or external crossover hardware.
  • Peak Power: The pair is rated at 140 watts maximum combined peak output, which is a marketing ceiling figure and not a continuous RMS power rating.
  • Impedance: Both speakers are rated at 4 ohms, the standard impedance for car audio systems and compatible with virtually all factory and aftermarket head units.
  • Frequency Response: The speakers reproduce audio from 100Hz to 18kHz, covering mid-range and high frequencies but offering no meaningful low-frequency extension below 100Hz.
  • Sensitivity: Sensitivity is rated at 88dB at 1 watt measured at 1 meter, meaning a moderately powered head unit is needed to drive these to satisfying volume levels.
  • Tweeter Type: A 1-inch piezoelectric tweeter handles high-frequency reproduction without requiring a dedicated crossover network in the signal chain.
  • Cone Material: The woofer cone is constructed from poly injection material, which resists warping and moisture exposure better than paper-based alternatives at this price tier.
  • Surround Material: A rubber surround encircles the cone, providing better long-term durability against heat and humidity compared to foam surrounds common in lower-cost competitors.
  • Basket Construction: The speaker basket is stamped steel, which is standard practice at this price point and adequate for normal car audio use in controlled environments.
  • Mounting Depth: Each speaker requires a minimum mounting depth of 1.44 inches, a shallow profile that fits many compact vehicle door cavities without spacer rings.
  • Mounting Hole: Installation requires a 3.1-inch mounting cutout diameter, which matches the factory opening in many small sedans and hatchbacks without modification.
  • Pair Weight: The combined weight of both speakers is 1.72 lbs, making them lightweight and easy for a single person to manage during a DIY installation.
  • Mount Type: These speakers use a flush-mount installation method, sitting flat and flush against the mounting surface for a clean, factory-style finish.
  • Finish: Both speakers feature a black finish that blends unobtrusively with standard factory door panels and grilles.
  • Quantity: The package includes two speakers sold as a matched pair, sufficient for a single stereo channel pair in one vehicle location.
  • Included Items: The box contains the two speakers and a printed instruction manual; no mounting hardware, wire connectors, or speaker grilles are included.
  • Connectivity: Connection is via standard wired terminals compatible with typical factory speaker harnesses, with no wireless or Bluetooth functionality involved.
  • Water Resistance: These speakers carry no water resistance or weatherproof rating and are not designed for exposed or marine applications.
  • Dimensions: Each speaker unit measures approximately 2.01″ deep by 3.5″ wide by 3.5″ tall in its overall physical footprint.

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FAQ

They fit many compact sedans and hatchbacks directly, but it depends on your specific vehicle. The mounting hole needed is 3.1 inches and the mounting depth is 1.44 inches. Before buying, look up your car model in an online fit guide or check the factory speaker cutout dimensions in your door panel.

Your factory head unit will drive these BOSS door speakers just fine in most cases. The 4-ohm impedance matches standard OEM radios, and no external amp is required for everyday listening volumes. That said, if your factory system is especially underpowered, you may not get the loudness you are hoping for without adding an amp.

That figure is a peak power rating, not continuous RMS power, which is the number that actually describes real-world handling capacity. Most factory radios deliver somewhere between 15 and 25 watts RMS per channel, which is well within what these speakers can handle comfortably day to day. Do not let the 140W headline mislead you into thinking you need a powerful amp to run them safely.

Honestly, not much. The 3.5-inch cone and 100Hz lower frequency limit mean meaningful bass simply is not something these can produce. They handle mids and highs well enough, but if bass is important to your listening experience, you will want to pair them with a separate subwoofer.

Not at all — this is genuinely one of the more DIY-friendly speaker options at this price. The shallow mounting depth, standard wiring connections, and included instruction manual make the process approachable even for a first-timer. Most people complete the installation in under an hour with basic hand tools.

No, the box only includes the two speakers and an instruction manual. You will need to source mounting screws separately, and most installers reuse their factory grilles. It is a minor but real inconvenience worth knowing about before you start the project.

Yes, these are listed as compatible with car and bus applications. They work well as fill speakers in secondary listening positions in larger vehicles, as long as the mounting location accommodates the 3.5-inch format and the head unit runs at standard 4-ohm impedance.

This is a fair concern and one that comes up in real buyer feedback. Piezoelectric tweeters have a reputation for sounding sharp or fatiguing at higher volumes, and these BOSS door speakers are no exception. At moderate listening levels they are fine, but if you regularly crank your audio, the high-frequency edge can become uncomfortable over time.

For most drivers, the improvement in mid-range clarity is immediately noticeable — voices, guitars, and instruments come through with more detail and less muddiness than typical OEM units. The main exception is bass, where factory speakers in some vehicles actually perform comparably. Overall the upgrade is real and worthwhile for the cost involved.

No. These are rated with zero water resistance and are not designed for any kind of exposure to rain, humidity, or outdoor conditions. They are strictly designed for enclosed vehicle interior installations where they are protected from the elements.

Where to Buy

Walmart
BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers
In stock $20.99
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eBay
BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers
In stock $29.29
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Parts Express
BOSS Audio CH3220B 3.5-inch Car Coaxial Speakers
In stock $20.90
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