In this review, we will be comparing Prime Center and ES35, two Passive Center Channel speakers from SVS and Polk Audio.
Let's have a brief look at the main features
of SVS Prime Center and Polk ES35 first before getting into our more
detailed comparison.
| Key Specs | SVS Prime Center | Polk ES35 |
|---|
| Brand | SVS
United States · founded 1998 | Polk Audio
United States · founded 1972 |
|---|
| Design | 3-way | 2-way |
|---|
| Tweeter | 1" dome | 1" High-res dome |
|---|
| Midrange | 3-1/2" | — |
|---|
| Woofer | 2 x 5.25" polypropylene | 6 x 3" mica-reinforced polypropylene Dynamic Balance |
|---|
| Frequency response | 48-25k Hz | 66-40k Hz |
|---|
| Sensitivity | 86 dB | 89 dB |
|---|
| Impedance | 8 ohms | 8 ohms |
|---|
| Power range | 20-200 watts | 20-150 watts |
|---|
| Weight | 9.18kg / 20.2lbs | 6.36kg / 14lbs |
|---|
| Dimensions (H x W x D) | 7-11/16" x 18-11/16" x 9-1/8"
196.0 x 475.0 x 232.0mm | 4-3/16" x 24-7/16" x 6-1/16"
107.0 x 621.0 x 154.0mm |
|---|
What size room are the SVS Prime Center and Polk ES35 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* |
SVS Prime Center |
Polk ES35 |
| 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.
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Drivers
One of the fundamental differences between these two speakers is that Prime Center is a 3-way design whereas the ES35 is a 2-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.
SVS Prime CenterPolk ES35
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
SVS Prime Center |
Polk ES35 |
|
Driver Setup
|
3-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
1 x 3-1/2-inch |
- |
|
Woofer
|
2 x 5.25-inch
|
6 x 3-inch
|
Prime Center features a 1" aluminum dome Tweeter, a 3-1/2" Midrange and 2 x 5.25" polypropylene Woofer with a Crossover frequency at 350Hz and 2400Hz. On the other hand, the ES35 features a 1" Terylene High-res dome Tweeter and 6 x 3" mica-reinforced polypropylene Dynamic Balance Woofer.
Frequency Response
Prime Center has a frequency range of 48-25k Hz whereas ES35 has a frequency range of 66-40k Hz. With a minimum frequency of 48Hz, the Prime Center can go significantly deeper on the low side and provide stronger bass compared to the ES35's min frequency of 66Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Center Channel class in our database.
Low Frequency
Center Channel Speakers
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
Prime Center and ES35 have the same Impedance of 8 ohms but where they differ is the sensitivity levels. Prime Center sensitivity is rated at 86 dB and the ES35's is at 89 dB. This 3 dB difference makes the Polk ES35 a more sensitive speaker compared to SVS Prime Center, hence will play louder with the same amount of watts.
Sensitivity
Center Channel Speakers
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.
Prime Center can handle a max power of 200 watts RMS, whereas ES35 has a max power handling value of 150 watts RMS, 50 watts less than the Prime Center.
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.
Input Type and Bi-Amping / Bi-Wiring
Prime Center features 5-Way post type posts and ES35 has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.
SVS Prime Center's 5-Way post terminals
Polk ES35's 5-Way post terminals
Cabinet Type and Port Position
Both Prime Center and ES35 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.
If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.
Polk ES35 Port
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 SVS Prime Center's and Polk ES35's external dimensions. SVS Prime Center has external dimensions of 196.0 x 475.0 x 232.0mm (7-11/16 x 18-11/16 x 9-1/8inch) whereas Polk ES35 has external dimensions of 107.0 x 621.0 x 154.0mm (4-3/16 x 24-7/16 x 6-1/16inch).
Polk ES35 is 89mm shorter and 78mm less deeper than SVS Prime Center but it is also 146mm wider.
Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base surface area of the SVS Prime Center is approximately 1102.0cm2 / 170.8inch2 and base area of the Polk ES35 is approximately 956.3cm2 / 148.2inch2. The Prime Center requires 15% more surface area than the ES35 which gives it a small disadvantage on placement in tight spaces.
Weight Comparison The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The SVS Prime Center weighs 9.18kg / 20.2lbs and the Polk ES35 weighs 6.36kg / 14lbs. This makes the Prime Center 44% heavier than the ES35.
Here is a comparison of how Prime Center and ES35's weights compare with the average, max and min weights in Passive Center Channel class.
Weight
All Center Channel Speakers
What's in the Box of SVS Prime Center?
Here are the items that are included inside the box of Prime Center:
- Center channel loudspeaker
- Grille (pre-installed)
- 4 Self-adhesive rubber bumpers
- Owners Manual
- SVS brochure
- Online Product Registration Card
What's in the Box of Polk ES35?
Here are the items that come with the ES35:
- LCR loudspeaker
- Grille (attached)
- 4 Self-adhesive rubber feet
- Wall-mount template
- Owners Manual
- Online Product Registration
 Max Input Power |
200 watts
vs
150 watts
|
Handle more power from your amplifier |
 Driver Setup |
3-way
vs
2-way
|
Have a dedicated mid-range driver |
 Woofer Size |
5.25 inches
vs
3 inches
|
Larger woofer |
|
Low Frequency Response |
48 Hz
vs
66 Hz
|
Generates deeper bass |
 Sensitivity |
89 dB
vs
86 dB
|
Play louder with same amount of amplification power |
|
Number of Woofers |
6
vs
2
|
More woofers |
 High Frequency Response |
40k Hz
vs
25k Hz
|
Generates higher frequency |
 Height |
107mm
vs
196mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
956cm2
vs
1102cm2
|
Takes less floor space |
| General |
SVS Prime Center |
Polk Audio Signature Elite ES35 |
| Brand |
SVS |
Polk Audio |
| Speaker Type |
Center channel speaker (Premium Black Ash) |
Low-profile center channel speaker |
| Power Range |
20-200 watts |
20-150 watts |
| Sensitivity |
86 dB |
89 dB |
| Impedance |
8 ohms |
8 ohms |
| Frequency Response |
48-25k Hz |
66-40k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
6 |
| Woofer Size |
5.25" |
3" |
| Woofer Composition |
polypropylene |
mica-reinforced polypropylene Dynamic Balance |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
dome |
High-res dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
3-1/2" |
No |
| Crossover Frequency |
350Hz and 2400Hz |
n/a |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
196.0mm (7.7") |
107.0mm (4.2") |
| Width |
475.0mm (18.7") |
621.0mm (24.4") |
| Depth |
232.0mm (9.1") |
154.0mm (6.1") |
| Weight |
9.18kg (20.2lbs) |
6.36kg (14lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
n/a |
MDF, Wood-grain vinyl |
| Available Colors |
Black |
Black, Walnut, White |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
A generation apart: Polk ES35 is the newer design, against a 2015 model. Newer is not automatically better, but the older one is more likely to be discounted or near run-out.
| Area | Better | Why |
|---|
| Bass | A | SVS Prime Center digs deeper - 48Hz against 66Hz. |
| Amplifier needs | B | Polk ES35 is more sensitive (89dB vs 86dB), so it goes louder on the same amplifier. |
| Headroom | A | SVS Prime Center takes more power (200W vs 150W) - more in hand in a big room. |
| Size | depends | Polk ES35 is easier to place; SVS Prime Center is bigger, which usually goes with fuller bass. Your room decides. |
| Expandability | depends | Neither adds bi-amping, a sub output or height drivers. Polk ES35 sits in a wider range (12 models), so a matched surround system is easier later. |
| Price | evenly matched | Much the same money ($399 vs $399 a pair). |
A SVS Prime Center B Polk ES35
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?
SVS Prime Center has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 66Hz anyway, so judge these on the other rows instead. In a large or open-plan room, SVS Prime Center has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, Polk ES35 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.