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Polk R300 vs Polk Audio Reserve R350 Comparison

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Polk R300

Passive Center Channel | 65-38k Hz

Polk Audio Reserve R300
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Polk Audio Reserve R350

Passive Center Channel | 75-35k Hz

Polk Audio Reserve R350
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Polk R300 Polk R300
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Polk Audio Reserve R350 Polk Audio Reserve R...
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Polk R300
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Polk Audio Reserve R...
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Polk R300 vs Polk Audio Reserve R350 Speaker Comparison

In this review, we will be comparing R300 and Reserve R350, two Passive Center Channel speakers by Polk Audio

Let's have a brief look at the main features of Polk R300 and Polk Audio Reserve R350 first before getting into our more detailed comparison.

Polk R300 Key Specs

  • 2-way Design
  • 1" Pinnacle Ring Radiator Tweeter
  • 2 x 5.25" Polypropylene Turbine Cone Woofer
  • 65-38k Hz Frequency Response
  • 86.5 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:30-200watts
  • Weight:7.64kg
  • Dimensions (H x W x D): 6-13/16" x 19-1/16" x 8-15/16" ( 174.0 x 485.0 x 228.0mm )

Polk Audio Reserve R350 Key Specs

  • 2-way Design
  • 1" Ring Radiator Tweeter
  • 4 x 4" Woofer
  • 75-35k Hz Frequency Response
  • 87 dB Sensitivity
  • Impedance: 8ohms
  • Weight:kg
  • Dimensions (H x W x D): 5-9/16" x 30" x 7-1/4"

R300 and Reserve R350 are members of Polk Audio's Reserve series of speakers. Below you can find the loudspeakers from this series.

Polk Audio Reserve Series History
Model Body Frequency SensitivityImpedance Woofer
Polk R700
  
Floor-standing 38-38k Hz 88 dB8Ω 2 x 8"
Polk R600
  
Floor-standing 43-38k Hz 87.5 dB8Ω 2 x 6.5"
Polk R500
  
Floor-standing 49-38k Hz 87 dB8Ω 2 x 5.25"
Polk R200
  
Bookshelf 51-38k Hz 86 dB8Ω 1 x 6.5"
Polk R100
  
Bookshelf 58-39k Hz 86 dB8Ω 1 x 5.25"
Polk R400
  
Center Channel 48-39K Hz 89 dB8Ω 2 x 6.5"
Polk R300
Center Channel 65-38k Hz 86.5 dB8Ω 2 x 5.25"
Polk R200 50th AE
  
Bookshelf 51-38k Hz 86 dB8Ω 1 x 6.5"
Polk Audio Reserve R350
Center Channel 75-35k Hz 87 dB8Ω 4 x 4"
Polk Audio Reserve R900
  
Surround 70-32k Hz 85.5 dB8Ω 1 x 4"

In the following sections, we will get into more detail in order to better understand how the Polk R300 and Polk Audio Reserve R350 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Drivers

Both R300 and Reserve R350 are 2-way speakers.

Driver Polk R300 Polk Audio Reserve R350
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 2 x 5.25-inch 4 x 4-inch

R300 features a 1" Pinnacle Ring Radiator Tweeter and 2 x 5.25" Polypropylene Turbine Cone Woofer with a Crossover frequency at 2200Hz. On the other hand, the Reserve R350 features a 1" Ring Radiator Tweeter and 4 x 4" Woofer .

Frequency Response

R300 has a frequency range of 65-38k Hz whereas Reserve R350 has a frequency range of 75-35k Hz. With a minimum frequency of 65Hz, the R300 can go significantly deeper on the low side and provide stronger bass compared to the Reserve R350's min frequency of 75Hz.

Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the Center Channel class in our database.

Low Frequency

Center Channel Speakers

R300
Reserve R350
Min
Average
Max
High Frequency

Center Channel Speakers

Polk R300
Polk Audio Reserve R350
Min
Average
Max

None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.

Impedance and Sensitivity

R300 and Reserve R350 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. R300 sensitivity is rated at 86.5 dB and the Reserve R350's is at 87 dB.

Sensitivity

Center Channel Speakers

R300
Reserve R350
Min
Average
Max

Input Type and Bi-Amping / Bi-Wiring

R300 features Binding post type posts and Reserve R350 has a Binding post type posts. None of these speakers feature bi-amping/bi-wiring.

Polk R300 Terminals
Polk R300's Binding post terminals

Physical Specs

Size of a speaker can sometimes become 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 R300's and Polk Audio Reserve R350's external dimensions. Polk R300 has external dimensions of 174.0 x 485.0 x 228.0mm ( 6-13/16 x 19-1/16 x 8-15/16inch) whereas Polk Audio Reserve R350 has external dimensions of ( ) .

Polk R300 is clearly the larger of the two speakers. Its body is 485mm wider, 174mm taller and 228mm deeper than Polk Audio Reserve R350.

What's in the Box of Polk R300?

Here are the items that are included inside the box of R300:
  • Center-channel loudspeaker
  • Grille
  • Owners Manual
  • Online Registration


Reasons to choose Polk Audio Reserve R300 over Polk Audio Reserve R350
Woofer Size 5.25 inches vs 4 inches Larger woofer
Low Frequency Response 65 Hz vs 75 Hz Generates deeper bass
Price per pair* 449USD vs 649USD costs less (*prices may change depending on the seller, location and time)

Reasons to choose Polk Audio Reserve R350 over Polk Audio Reserve R300

Number of Woofers 4 vs 2 More woofers
High Frequency Response 35000k Hz vs 38k Hz Generates higher frequency
Height 0mm vs 174mm Easier to fit in smaller spaces
Base Surface Area 0cm2 vs 1105cm2 Takes less floor space
Polk R300 vs Polk Audio Reserve R350 Specs Table
Detailed comparison of specifications
General Polk Audio Reserve R300 Polk Audio Reserve R350
Brand Polk Audio Polk Audio
Speaker Type Center channel speaker Center channel speaker
Sensitivity 86.5 dB 87 dB
Impedance 8 ohms 8 ohms
Impedance 3.8 ohms n/a
Frequency Response 65-38k Hz 75-35k Hz
Drivers
Woofer Quantity 2 4
Woofer Size 5.25" 4"
Woofer Composition Polypropylene Turbine Cone
Woofer Surround Material Rubber n/a
Tweeter Size 1" 1"
Tweeter Type Pinnacle Ring Radiator Ring Radiator
Aimable Tweeter No No
Midrange Driver No No
Crossover Frequency 2200Hz n/a
Firing Direction rear n/a
Physical Specs
Height 174.0mm (6.9") mm (0")
Width 485.0mm (19.1") mm (0")
Depth 228.0mm (9") mm (0")
Weight 7.64kg (16.8lbs) n/a
Enclosure Acoustic Suspension
Available Colors Black, Walnut Brown
Grille Yes n/a
Moisture Resistancy No No
Connections
Biamp Inputs No n/a
Other
Parts Warranty 5 Years 5 Years
Labor Warranty 5 Years 5 Years

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