In this review, we will be comparing S 83 CEN and C 9 CEN II, two Passive Center Channel speakers by Jamo.
Let's have a brief look at the main features
of Jamo S 83 CEN and Jamo C 9 CEN II first before getting into our more
detailed comparison.
| Key Specs | Jamo S 83 CEN | Jamo C 9 CEN II |
|---|
| Brand | Jamo
Denmark · founded 1966 | Jamo
Denmark · founded 1966 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" soft dome with an integrated waveguide | 1" soft dome with an integrated waveguide |
|---|
| Woofer | 2 x 5" polyfiber | 2 x 4" HCCC (Hybrid Composition Conical Cone) |
|---|
| Frequency response | 65-26k Hz | 55-24k Hz |
|---|
| Sensitivity | 87 dB | 88 dB |
|---|
| Impedance | 8 ohms | 6 ohms |
|---|
| Power range | up to 80 watts | 50-140 watts |
|---|
| Weight | 6.80kg / 15lbs | 3.09kg / 6.8lbs |
|---|
| Dimensions (H x W x D) | 8-1/2" x 19-5/8" x 9-11/16"
216.0 x 499.0 x 247.0mm | 7-3/16" x 18-5/16" x 9-1/16"
183.0 x 466.0 x 231.0mm |
|---|
What size room are the Jamo S 83 CEN and Jamo C 9 CEN II 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* |
Jamo S 83 CEN |
Jamo C 9 CEN II |
| Near-field |
Average |
Poor |
| Small Room |
Good |
Average |
| Mid-size Room |
Average |
Good |
| Large Room |
Poor |
Average |
| Very Large Room |
Bad |
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 S 83 CEN and C 9 CEN II are 2-way speakers.
Jamo S 83 CENJamo C 9 CEN II
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Jamo S 83 CEN |
Jamo C 9 CEN II |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 5-inch
|
2 x 4-inch
|
S 83 CEN features a 1" soft dome with an integrated waveguide Tweeter and 2 x 5" polyfiber Woofer with a Crossover frequency at 2000Hz. On the other hand, the C 9 CEN II features a 1" soft dome with an integrated waveguide Tweeter and 2 x 4" HCCC (Hybrid Composition Conical Cone) Woofer.
Frequency Response
S 83 CEN has a frequency range of 65-26k Hz whereas C 9 CEN II has a frequency range of 55-24k Hz. With a minimum frequency of 55Hz, the C 9 CEN II can go significantly deeper on the low side and provide stronger bass compared to the S 83 CEN's min frequency of 65Hz.
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
S 83 CEN is a 8 ohms speaker compared to the C 9 CEN II which has a nominal impedance of 6 ohms.
These two speakers also have different sensitivity levels. S 83 CEN sensitivity is rated at 87 dB and the C 9 CEN II's is rated at 88 dB. This 1 dB difference makes the Jamo C 9 CEN II a more sensitive speaker compared to Jamo S 83 CEN, 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.
C 9 CEN II can handle a max power of 140 watts RMS, whereas S 83 CEN has a max power handling value of 80 watts RMS, 60 watts less than the C 9 CEN II.
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
S 83 CEN features 5-Way post type posts and C 9 CEN II has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.
Jamo S 83 CEN's Binding post terminals
Jamo C 9 CEN II's 5-Way post terminals
Cabinet Type and Port Position
Both S 83 CEN and C 9 CEN II 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.
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 Jamo S 83 CEN's and Jamo C 9 CEN II's external dimensions. Jamo S 83 CEN has external dimensions of 216.0 x 499.0 x 247.0mm (8-1/2 x 19-5/8 x 9-11/16inch) whereas Jamo C 9 CEN II has external dimensions of 183.0 x 466.0 x 231.0mm (7-3/16 x 18-5/16 x 9-1/16inch).
Jamo S 83 CEN is clearly the larger of the two speakers. Its body is 33mm wider, 33mm taller and 16mm deeper than Jamo C 9 CEN II.
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 Jamo S 83 CEN is approximately 1232.5cm2 / 191.0inch2 and base area of the Jamo C 9 CEN II is approximately 1076.5cm2 / 166.9inch2. The S 83 CEN requires 14% more surface area than the C 9 CEN II 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 Jamo S 83 CEN weighs 6.80kg / 15lbs and the Jamo C 9 CEN II weighs 3.09kg / 6.8lbs. This makes the S 83 CEN 120% heavier than the C 9 CEN II.
Here is a comparison of how S 83 CEN and C 9 CEN II'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 Jamo S 83 CEN?
Here are the items that are included inside the box of S 83 CEN:
- Center-channel loudspeaker
- Grille
- User Manual
- Important Safety Instructions
- Warranty Information
What's in the Box of Jamo C 9 CEN II?
Here are the items that come with the C 9 CEN II:
- Center-channel loudspeaker
- Grille
- 4 Rubber feet (pre-installed)
- 2 Self-adhesive rubber bumpers
- User Manual
- Important Safety Instructions
- Warranty Information
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
 Woofer Size |
5 inches
vs
4 inches
|
Larger woofer |
 High Frequency Response |
26k Hz
vs
24k Hz
|
Generates higher frequency |
 Price per pair* |
229USD
vs
344USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
140 watts
vs
80 watts
|
Handle more power from your amplifier |
 Sensitivity |
88 dB
vs
87 dB
|
Play louder with same amount of amplification power |
|
Low Frequency Response |
55 Hz
vs
65 Hz
|
Generates deeper bass |
 Height |
183mm
vs
216mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
1076cm2
vs
1232cm2
|
Takes less floor space |
| General |
Jamo S 83 CEN |
Jamo Concert 9 Series C 9 CEN II |
| Brand |
Jamo |
Jamo |
| Speaker Type |
Center channel speaker |
Center channel speaker (Black Ash) |
| Power Range |
up to 80 watts |
50-140 watts |
| Sensitivity |
87 dB |
88 dB |
| Impedance |
8 ohms |
6 ohms |
| Frequency Response |
65-26k Hz |
55-24k Hz |
Drivers |
|
|
| Woofer Quantity |
2 |
2 |
| Woofer Size |
5" |
4" |
| Woofer Composition |
polyfiber |
HCCC (Hybrid Composition Conical Cone) |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
soft dome with an integrated waveguide |
soft dome with an integrated waveguide |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
2000Hz |
n/a |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
216.0mm (8.5") |
183.0mm (7.2") |
| Width |
499.0mm (19.6") |
466.0mm (18.3") |
| Depth |
247.0mm (9.7") |
231.0mm (9.1") |
| Weight |
6.80kg (15lbs) |
3.09kg (6.8lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Available Colors |
Black, White, Walnut |
Black Ash, White Oak,Dark Apple |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |
Both are Jamo, from different ranges - so the house sound is shared and the differences are mostly in scale, engineering and price.
| Area | Better | Why |
|---|
| Bass | B | Jamo C 9 CEN II digs deeper - 55Hz against 65Hz. |
| Amplifier needs | evenly matched | Similar sensitivity (87dB vs 88dB) - both want much the same power. |
| Amplifier match | A | Jamo S 83 CEN is the easier load at 8 ohms. |
| Headroom | B | Jamo C 9 CEN II takes more power (140W vs 80W) - more in hand in a big room. |
| Size | depends | Jamo C 9 CEN II is easier to place; Jamo S 83 CEN is bigger, which usually goes with fuller bass. Your room decides. |
| Price | A | Jamo S 83 CEN is cheaper - $229 against $344, about 33% less. |
A Jamo S 83 CEN B Jamo C 9 CEN II
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?
Jamo C 9 CEN II is ahead, but only on 1 of the measured areas, and it costs about 50% more. That is a lot of money for a narrow margin on paper - Jamo S 83 CEN looks like the sensible buy unless something else about the Jamo C 9 CEN II appeals to you. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 65Hz anyway, which makes the cheaper Jamo S 83 CEN much easier to justify. Match it to your room: we rate Jamo S 83 CEN the better fit for near-field listening and a small room, and Jamo C 9 CEN II for a mid-size room and a large room.
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.