In this review, we will be comparing C7ES-3 XD2 and M30.3 XD2, two Passive Bookshelf speakers by Harbeth.
Let's have a brief look at the main features
of Harbeth C7ES-3 XD2 and Harbeth M30.3 XD2 first before getting into our more
detailed comparison.
| Key Specs | Harbeth C7ES-3 XD2 | Harbeth M30.3 XD2 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" Dome | 1" Dome |
|---|
| Woofer | 8" RADIAL | 8" RADIAL |
|---|
| Frequency response | 45-20k Hz | 50-20k Hz |
|---|
| Sensitivity | 86 dB | 85 dB |
|---|
| Impedance | 6 ohms | 6 ohms |
|---|
| Power range | 25-150 watts | 25-150 watts |
|---|
| Weight | 13.20kg / 29lbs | 11.60kg / 25.5lbs |
|---|
| Dimensions (H x W x D) | 20-1/2" x 10-11/16" x 12"
520.0 x 272.0 x 305.0mm | 18-1/8" x 10-7/8" x 10-13/16"
460.0 x 277.0 x 275.0mm |
|---|
C7ES-3 XD2 and M30.3 XD2 are members of Harbeth's XD2 series of speakers. Below you can find the loudspeakers from this series.
Harbeth XD2 Series
History
What size room are the Harbeth C7ES-3 XD2 and Harbeth M30.3 XD2 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* |
Harbeth C7ES-3 XD2 |
Harbeth M30.3 XD2 |
| Near-field |
Average |
Average |
| Small Room |
Good |
Good |
| Mid-size Room |
Average |
Average |
| Large Room |
Poor |
Poor |
| Very Large Room |
Bad |
Bad |
(* 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
Both C7ES-3 XD2 and M30.3 XD2 are 2-way speakers.
Harbeth C7ES-3 XD2Harbeth M30.3 XD2
TweeterWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
Harbeth C7ES-3 XD2 |
Harbeth M30.3 XD2 |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
1-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
1 x 8-inch
|
1 x 8-inch
|
C7ES-3 XD2 features a 1" Ferrofluid-cooled dome Dome Tweeter and 1 x 8" RADIAL Woofer. On the other hand, the M30.3 XD2 features a 1" Ferrofluid-cooled dome Dome Tweeter and 1 x 8" RADIAL Woofer.
Frequency Response
C7ES-3 XD2 has a frequency range of 45-20k Hz whereas M30.3 XD2 has a frequency range of 50-20k Hz. With a minimum frequency of 45Hz, the C7ES-3 XD2 can go significantly deeper on the low side and provide stronger bass compared to the M30.3 XD2'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 Bookshelf class in our database.
Low Frequency
Bookshelf 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
C7ES-3 XD2 and M30.3 XD2 have the same Impedance of 6 ohms but where they differ is the sensitivity levels. C7ES-3 XD2 sensitivity is rated at 86 dB and the M30.3 XD2's is at 85 dB. This 1 dB difference makes the Harbeth C7ES-3 XD2 a more sensitive speaker compared to Harbeth M30.3 XD2, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf 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.
C7ES-3 XD2 and M30.3 XD2 have the same power range of 25-150 watts.
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
C7ES-3 XD2 features Binding post type posts and M30.3 XD2 has a Binding post 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 Harbeth C7ES-3 XD2's and Harbeth M30.3 XD2's external dimensions. Harbeth C7ES-3 XD2 has external dimensions of 520.0 x 272.0 x 305.0mm (20-1/2 x 10-11/16 x 12inch) whereas Harbeth M30.3 XD2 has external dimensions of 460.0 x 277.0 x 275.0mm (18-1/8 x 10-7/8 x 10-13/16inch).
Harbeth M30.3 XD2 is 60mm shorter and 30mm less deeper than Harbeth C7ES-3 XD2 but it is also 5mm 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 Harbeth C7ES-3 XD2 is approximately 829.6cm2 / 128.6inch2 and base area of the Harbeth M30.3 XD2 is approximately 761.8cm2 / 118.1inch2. The C7ES-3 XD2 requires 9% more surface area than the M30.3 XD2 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 Harbeth C7ES-3 XD2 weighs 13.20kg / 29lbs and the Harbeth M30.3 XD2 weighs 11.60kg / 25.5lbs. This makes the C7ES-3 XD2 14% heavier than the M30.3 XD2.
Here is a comparison of how C7ES-3 XD2 and M30.3 XD2's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
 Sensitivity |
86 dB
vs
85 dB
|
Play louder with same amount of amplification power |
 Low Frequency Response |
45 Hz
vs
50 Hz
|
Generates deeper bass |
 Price per pair* |
5290USD
vs
6290USD
|
costs less (*prices may change depending on the seller, location and time) |
 Height |
460mm
vs
520mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
761cm2
vs
829cm2
|
Takes less floor space |
| General |
Harbeth C7ES-3 XD2 |
Harbeth M30.3 XD2 |
| Brand |
Harbeth |
Harbeth |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
25-150 watts |
25-150 watts |
| Sensitivity |
86 dB |
85 dB |
| Impedance |
6 ohms |
6 ohms |
| Frequency Response |
45-20k Hz |
50-20k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
8" |
| Woofer Composition |
RADIAL |
RADIAL |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
Dome |
Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
Physical Specs |
|
|
| Height |
520.0mm (20.5") |
460.0mm (18.1") |
| Width |
272.0mm (10.7") |
277.0mm (10.9") |
| Depth |
305.0mm (12") |
275.0mm (10.8") |
| Weight |
13.20kg (29lbs) |
11.60kg (25.5lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Mounting Bracket |
|
|
| 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 |
Siblings in Harbeth's XD2 series, so they share a family sound. It comes down to size, output and price.
| Area | Better | Why |
|---|
| Bass |
A |
Harbeth C7ES-3 XD2 digs deeper - 45Hz against 50Hz. A subwoofer would even that out. |
| Amplifier needs |
evenly matched |
Similar sensitivity (86dB vs 85dB) - both want much the same power. |
| Headroom |
evenly matched |
Similar power handling (150W vs 150W). |
| Size |
depends |
Similar cabinet size - neither is easier to fit. |
| Price |
A |
Harbeth C7ES-3 XD2 is cheaper - $5,290 against $6,290, about 16% less. |
A Harbeth C7ES-3 XD2
B Harbeth M30.3 XD2
depends neither is better in the abstract - it turns on your room, placement 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?
Harbeth C7ES-3 XD2 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 50Hz anyway, so judge these on the other rows instead.
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.