In this review, we will be comparing C 91 II and C 93 II, two Passive Bookshelf speakers by Jamo Let's have a brief look at the main features
of Jamo C 91 II and Jamo C 93 II first before getting into our more
detailed comparison.
C 91 II and C 93 II are members of Jamo's Concert 9 series of speakers. Below you can find the loudspeakers from this series.
Jamo Concert 9 Series History
What size room are the Jamo C 91 II and Jamo C 93 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:
In the following sections, we will get into more detail in order to better understand how the Jamo C 91 II and Jamo C 93 II compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.
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Drivers
Both C 91 II and C 93 II are 2-way speakers.
| Driver |
Jamo C 91 II |
Jamo C 93 II |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 4-inch
|
1 x 6-inch
|
C 91 II features a 1" Soft-Dome Tweeter and 1 x 4" Composite Woofer . On the other hand, the C 93 II features a 1" Soft-Dome Tweeter and 1 x 6" Composite Woofer .
Frequency Response
C 91 II has a frequency range of 65-24k Hz whereas C 93 II has a frequency range of 45-24k Hz. With a minimum frequency of 45Hz, the C 93 II can go significantly deeper on the low side and provide stronger bass compared to the C 91 II's min frequency of 65Hz.
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 Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
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
C 91 II and C 93 II have the same Impedance of 6 ohms and their sensitivity is also same at 86 dB.
Sensitivity
Bookshelf Speakers
Power Range
Power
range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.
C 91 II can handle a max power of 120 watts RMS from the amp the whereas C 91 II has a max power handling value of 100 watts RMS , 20 watts less than the C 93 II.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
C 91 II features 5-way post type posts and C 93 II has a 5-way post type posts. None of these speakers feature bi-amping/bi-wiring.
Jamo C 91 II's 5-way post terminals
Cabinet Type and Port Position
Both C 91 II and C 93 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
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 Jamo C 91 II's and Jamo C 93 II's external dimensions. Jamo C 91 II has external dimensions of 265.0 x 171.0 x 191.0mm ( 10.4 x 6.7 x 7.5inch) whereas Jamo C 93 II has external dimensions of 350.0 x 200.0 x 259.0mm ( 13.7 x 7.8 x 10.1inch) .
Jamo C 93 II is clearly the larger of the two speakers. Its body is 29mm wider, 85mm taller and 68mm deeper than Jamo C 91 II.
Below you can see the front view size comparison of Jamo C 91 II and Jamo C 93 II in scale.
Comparison image of Jamo C 91 II and Jamo C 93 II Size and External Dimensions
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 C 91 II is approximately 326.6cm2 / 50.6inch2 and base area of the Jamo C 93 II is approximately 518.0cm2 / 80.3inch2. The C 91 II requires 37% less surface area than the C 93 II which gives it a small advantage on placement in tight spaces.
Here is an another comparison that shows both speakers on a BDI Octave Media Cabinet, next to a standard size amplifier and turntable in scale:
Size Comparison image of Jamo C 91 II and Jamo C 93 II on a Media Console
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 C 91 II weighs 4.10kg / 9lbs and the Jamo C 93 II weighs 6.40kg / 14.1lbs. This makes the C 93 II 56% heavier than the C 91 II.
Here is a comparison of how C 91 II and C 93 II's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of Jamo C 91 II?
Here are the items that are included inside the box of C 91 II:
2 Bookshelf loudspeakers 2 Grilles 8 Self-adhesive rubber feet 4 Self-adhesive rubber bumpers User Manual Important Safety Instructions Warranty Information
What's in the Box of Jamo C 93 II?
Here are the items that come with the C 93 II:
2 Bookshelf loudspeakers 2 Grilles 8 Self-adhesive rubber feet 4 Self-adhesive rubber bumpers User Manual Important Safety Instructions Warranty Information
 Height |
265mm
vs
350mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
326cm2 (171x191mm)
vs
518cm2 (200x259mm)
|
Takes less floor space |
 Price per pair* |
459USD
vs
574USD
|
costs less (*prices may change depending on the seller, location and time) |
 Max Input Power |
120 watts
vs
100 watts
|
Handle more power from your amplifier |
 Sensitivity |
88 dB
vs
86 dB
|
Play louder with same amount of amplification power |
 Woofer Size |
6 inches
vs
4 inches
|
Larger woofer |
| Low Frequency Response |
45 Hz
vs
65 Hz
|
Generates deeper bass |
| General |
Jamo Concert 9 Series C 91 II |
Jamo Concert 9 Series C 93 II |
| Brand |
Jamo |
Jamo |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
50-100 watts |
50-120 watts |
| Sensitivity |
86 dB |
86 dB |
| Impedance |
6 ohms |
6 ohms |
| Frequency Response |
65-24k Hz |
45-24k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
4" |
6" |
| Woofer Composition |
Composite |
Composite |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Soft-Dome |
Soft-Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Firing Direction |
rear |
rear |
Physical Specs |
|
|
| Height |
265.0mm (10.4") |
350.0mm (13.8") |
| Width |
171.0mm (6.7") |
200.0mm (7.9") |
| Depth |
191.0mm (7.5") |
259.0mm (10.2") |
| Weight |
4.10kg (9lbs) |
6.40kg (14.1lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Wood-grain |
MDF/Wood-grain vinyl |
| Available Colors |
White Oak,Black Ash |
White Oak,Black Ash |
| Mounting Bracket |
Keyhole |
Keyhole |
| Recommended Stand Height |
28-32" |
22-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
No |
Other |
|
|
| Parts Warranty |
5 Years |
5 Years |
| Labor Warranty |
5 Years |
5 Years |