Polk Audio 255C-RT vs JBL Stage 280W Comparison

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Polk Audio 255C-RT

Passive In-wall | 50-25kHz

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JBL Stage 280W

Passive In-wall | 42-25kHz

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Polk Audio 255C-RT

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JBL Stage 280W

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Polk Audio 255C-RT

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JBL Stage 280W

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Polk Audio 255C-RT vs JBL Stage 280W Speaker Comparison

In this review, we will be comparing 255C-RT and Stage 280W, two Passive In-wall speakers from Polk Audio and JBL.

Let's have a brief look at the main features of Polk Audio 255C-RT and JBL Stage 280W first before getting into our more detailed comparison.

Key Specs	Polk Audio 255C-RT	JBL Stage 280W
Brand	Polk Audio United States · founded 1972	JBL United States · founded 1946
Design	2-way	2-way
Tweeter	1" Soft-Dome	1" Horn-Loaded
Woofer	2 x 5.25" Polymer Composite	8" Polycellulose
Frequency response	50-25kHz	42-25kHz
Sensitivity	90 dB	90 dB
Impedance	8 ohms	8 ohms
Power range	10-150 watts	20-120 watts
Dimensions (H x W x D)	7.5625" x 13.0625" x 3-7/8" 193.0 x 332.0 x 98.4mm	14.6875" x 9.3750" x 3.8750" 374.0 x 239.0 x 99.0mm

What size room are the Polk Audio 255C-RT and JBL Stage 280W speakers good for?

The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:

Listening Environment*	Polk Audio 255C-RT	JBL Stage 280W
Near-field	Poor	Poor
Small Room	Average	Average
Mid-size Room	Good	Good
Large Room	Average	Average
Very Large Room	Poor	Poor

(* Approximate Room sizes: Small < 100sq. ft / 9 m², Mid-size: 100-220 sq. ft / 9-20 m², Large 220-400 sq. ft / 20-36 m², Very Large: > 400 sq. ft / 36 m². Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)

The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.

Drivers

Both 255C-RT and Stage 280W are 2-way speakers.

Polk Audio 255C-RT

JBL Stage 280W

TweeterWoofer

Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.

Driver	Polk Audio 255C-RT	JBL Stage 280W
Driver Setup	2-way	2-way
Tweeter	1-inch	1-inch
Midrange	-	-
Woofer	2 x 5.25-inch	1 x 8-inch

255C-RT features a 1" Soft-Dome Tweeter and 2 x 5.25" Polymer Composite Woofer. On the other hand, the Stage 280W features a 1" Horn-Loaded Tweeter and 1 x 8" Polycellulose Woofer.

Frequency Response

255C-RT has a frequency range of 50-25kHz whereas Stage 280W has a frequency range of 42-25kHz. With a minimum frequency of 42Hz, the Stage 280W can go significantly deeper on the low side and provide stronger bass compared to the 255C-RT's min frequency of 50Hz.

The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the In-wall class in our database.

Low Frequency

In-wall Speakers

255C-RT

Stage 280W

Min

Average

Median

Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.

Impedance and Sensitivity

255C-RT and Stage 280W have the same Impedance of 8 ohms and their sensitivity is also same at 90 dB.

Sensitivity

In-wall Speakers

255C-RT

Stage 280W

Min

Average

Median

Power Range

Power range is the range of input power in watts RMS that a loudspeaker is designed to handle. Staying within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.

255C-RT can handle a max power of 150 watts RMS, whereas Stage 280W has a max power handling value of 120 watts RMS, 30 watts less than the 255C-RT.

Note that higher power handling does not make a speaker louder: that depends mainly on sensitivity and impedance. The calculator below shows how loud each of these actually plays on a real amplifier.

Which plays louder on your amplifier?

Starting with a popular amplifier - change it to the one you own, or any you are considering, and watch both numbers move.

Amplifier - change this

Distance

Playing as

Polk Audio 255C-RT

JBL Stage 280W

Input Type and Bi-Amping / Bi-Wiring

255C-RT features Spring clip type posts and Stage 280W has a Spring clip type posts. None of these speakers feature bi-amping/bi-wiring.

Physical Specs

The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Polk Audio 255C-RT's and JBL Stage 280W's external dimensions. Polk Audio 255C-RT has external dimensions of 193.0 x 332.0 x 98.4mm (7.5625-inch x 13.0625-inch x 0.0000-inch) whereas JBL Stage 280W has external dimensions of 374.0 x 239.0 x 99.0mm (14.6875-inch x 9.3750-inch x 3.8750-inch).

Polk Audio 255C-RT is 181mm shorter and 0.59999999999999mm less deeper than JBL Stage 280W but it is also 93mm wider.

Below you can see the front view size comparison of Polk Audio 255C-RT and JBL Stage 280W in scale.

Comparison image of Polk Audio 255C-RT and JBL Stage 280W Size and External Dimensions

What's in the Box of Polk Audio 255C-RT?

Here are the items that are included inside the box of 255C-RT:

In-wall center-channel loudspeaker
White metal grille
Mounting template
Owners Manual
Sheer-Grille Painting instructions
Online Registration Card
Polk Audio product brochure

What's in the Box of JBL Stage 280W?

Here are the items that come with the Stage 280W:

In-wall loudspeaker
Grille
Cut-Out Template
Quick Start Guide

Reasons to choose Polk Audio 255C-RT over JBL Stage 280W

Max Input Power	150 watts vs 120 watts	Handle more power from your amplifier
Number of Woofers	2 vs 1	More woofers
Height	193mm vs 374mm	Easier to fit in smaller spaces
Price per pair*	398USD vs 450USD	costs less (*prices may change depending on the seller, location and time)

Reasons to choose JBL Stage 280W over Polk Audio 255C-RT

Woofer Size	8 inches vs 5.25 inches	Larger woofer
Low Frequency Response	42 Hz vs 50 Hz	Generates deeper bass
Base Surface Area	236cm² vs 326cm²	Takes less floor space

Polk Audio 255C-RT vs JBL Stage 280W Specs Table

Detailed comparison of specifications

General	Polk Audio 255C-RT	JBL Stage 280W
Brand	Polk Audio	JBL
Speaker Type	Passive In-wall Speaker	Passive In-wall Speaker
Power Range	10-150 watts	20-120 watts
Sensitivity	90 dB	90 dB
Impedance	8 ohms	8 ohms
Frequency Response	50-25kHz	42-25kHz
Drivers
Woofer Quantity	2	1
Woofer Size	5.25"	8"
Woofer Composition	Polymer Composite	Polycellulose
Woofer Surround Material	Rubber	Rubber
Tweeter Size	1"	1"
Tweeter Type	Soft-Dome	Horn-Loaded
Aimable Tweeter	No	No
Midrange Driver	No	No
Physical Specs
Height	193.0mm (7.6")	374.0mm (14.7")
Width	332.0mm (13.1")	239.0mm (9.4")
Depth	98.4mm (3.9")	99.0mm (3.9")
Enclosure	In-wall	In-wall
Moisture Resistancy	No	No
Connections
Biamp Inputs	No	No
Other
Parts Warranty	Lifetime	5 Years
Labor Warranty	Lifetime	5 Years

Verdict

A generation apart: JBL Stage 280W is the newer design, against a 2016 model. Newer is not automatically better, but the older one is more likely to be discounted or near run-out.

Area	Better	Why
Bass	B	JBL Stage 280W digs deeper - 42Hz against 50Hz. A subwoofer would even that out.
Amplifier needs	evenly matched	Similar sensitivity (90dB vs 90dB) - both want much the same power.
Headroom	A	Polk Audio 255C-RT takes more power (150W vs 120W) - more in hand in a big room.
Size	depends	Polk Audio 255C-RT is easier to place; JBL Stage 280W is bigger, which usually goes with fuller bass. Your room decides.
Expandability	depends	Neither adds bi-amping, a sub output or height drivers. JBL Stage 280W sits in a wider range (10 models), so a matched surround system is easier later.
Price	A	Polk Audio 255C-RT is cheaper - $398 against $450, about 12% less.

A Polk Audio 255C-RT B JBL Stage 280W
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.

Which should you choose?

Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 50Hz anyway, which makes the cheaper Polk Audio 255C-RT much easier to justify. In a large or open-plan room, JBL Stage 280W has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Polk Audio 255C-RT is the easier speaker to get right.

And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.