In this review, we will be comparing R11 and VELA FS 409, two Passive Floor-standing speakers from KEF and ELAC.
Let's have a brief look at the main features
of KEF R11 and ELAC VELA FS 409 first before getting into our more
detailed comparison.
| Key Specs | KEF R11 | ELAC VELA FS 409 |
|---|
| Brand | KEF
United Kingdom · founded 1961 | ELAC
Germany · founded 1926 |
|---|
| Design | 3-way | 3-way |
|---|
| Uni-Q driver | 12th Generation Uni-Q | — |
|---|
| Tweeter | 1" Dome | handmade JET 5 folded ribbon |
|---|
| Midrange | 5" | 6" |
|---|
| Woofer | 4 x 6.5" Hybrid Aluminum | 2 x 7" Aluminum/Paper |
|---|
| Frequency response | 46-28k Hz | 28-50k Hz |
|---|
| Sensitivity | 90 dB | 89 dB |
|---|
| Impedance | 8 ohms | 4 ohms |
|---|
| Power range | 15-300 watts | 40-200 watts |
|---|
| Weight | 37.70kg / 82.9lbs | 32.18kg / 70.8lbs |
|---|
| Dimensions (H x W x D) | 51-3/16" x 12-1/4" x 15-5/16"
1301.0 x 312.0 x 389.0mm | 52-3/8" x 10-15/16" x 13-9/16"
1331.0 x 278.0 x 345.0mm |
|---|
What size room are the KEF R11 and ELAC VELA FS 409 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* |
KEF R11 |
ELAC VELA FS 409 |
| Near-field |
Bad |
Bad |
| Small Room |
Poor |
Poor |
| Mid-size Room |
Average |
Good |
| Large Room |
Good |
Good |
| Very Large Room |
Average |
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 R11 and VELA FS 409 are 3-way speakers.
KEF R11ELAC VELA FS 409
TweeterMidrangeWoofer
Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.
| Driver |
KEF R11 |
ELAC VELA FS 409 |
|
Driver Setup
|
3-way
|
3-way
|
|
Tweeter
|
1-inch
|
-inch
|
|
Midrange
|
1 x 5-inch |
1 x 6-inch |
|
Woofer
|
4 x 6.5-inch
|
2 x 7-inch
|
R11 features a 1" aluminum Dome Tweeter, a 5" Midrange and 4 x 6.5" Hybrid Aluminum Woofer with a Crossover frequency at 400Hz and 2900Hz. On the other hand, the VELA FS 409 features a " handmade JET 5 folded ribbon Tweeter, a 6" Midrange and 2 x 7" Aluminum/Paper Woofer.
Frequency Response
R11 has a frequency range of 46-28k Hz whereas VELA FS 409 has a frequency range of 28-50k Hz. With a minimum frequency of 28Hz, the VELA FS 409 can go significantly deeper on the low side and provide stronger bass compared to the R11's min frequency of 46Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Floor-standing class in our database.
Low Frequency
Floor-standing 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
R11 is a 8 ohms speaker compared to the VELA FS 409 which has a nominal impedance of 4 ohms. Lower impedance speakers, especially the ones that are rated at 4 ohms may put more pressure on the amplifier unit especially when played at high volume levels, so make sure the amp you pair with the VELA FS 409 can provide this impedance level.
These two speakers also have different sensitivity levels. R11 sensitivity is rated at 90 dB and the VELA FS 409's is rated at 89 dB. This 1 dB difference makes the KEF R11 a more sensitive speaker compared to ELAC VELA FS 409, hence will play louder with the same amount of watts.
Sensitivity
Floor-standing 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.
R11 can handle a max power of 300 watts RMS, whereas VELA FS 409 has a max power handling value of 200 watts RMS, 100 watts less than the R11.
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
Both R11 and VELA FS 409 features dual binding post speaker terminals for bi-amping or bi-wiring.
KEF R11's Binding post terminals allows Bi-amping or 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 KEF R11's and ELAC VELA FS 409's external dimensions. KEF R11 has external dimensions of 1301.0 x 312.0 x 389.0mm (51-3/16 x 12-1/4 x 15-5/16inch) whereas ELAC VELA FS 409 has external dimensions of 1331.0 x 278.0 x 345.0mm (52-3/8 x 10-15/16 x 13-9/16inch).
ELAC VELA FS 409 is 34mm narrower and 44mm less deeper than KEF R11 but it is also 30mm taller.
Below you can see the front view size comparison of KEF R11 and ELAC VELA FS 409 in scale.
Comparison image of KEF R11 and ELAC VELA FS 409 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 KEF R11 is approximately 1213.7cm2 / 188.1inch2 and base area of the ELAC VELA FS 409 is approximately 959.1cm2 / 148.7inch2. The R11 requires 27% more surface area than the VELA FS 409 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 KEF R11 weighs 37.70kg / 82.9lbs and the ELAC VELA FS 409 weighs 32.18kg / 70.8lbs. This makes the R11 17% heavier than the VELA FS 409.
Here is a comparison of how R11 and VELA FS 409's weights compare with the average, max and min weights in Passive Floor-standing class.
Weight
All Floor-standing Speakers
What's in the Box of KEF R11?
Here are the items that are included inside the box of R11:
- Floorstanding loudspeaker
- Grille
- 2 Foam port plugs
- 4 Outrigger feet
- 4 Spikes
- 4 Protective discs
- 4 Screws
- 4 Washers
- Wrench
- Hex-key
- User Manual
- Warranty Information
What's in the Box of ELAC VELA FS 409?
Here are the items that come with the VELA FS 409:
- Floorstanding loudspeaker
- Base plate
- 2 Jumper straps (pre-installed)
- 4 Spikes
- 4 Pucks
- 4 Rubber pads
- 4 Machine screws
- 4 Washers
- Hex-key
- Operating And Safety Instructions
 Max Input Power |
300 watts
vs
200 watts
|
Handle more power from your amplifier |
 Sensitivity |
90 dB
vs
89 dB
|
Play louder with same amount of amplification power |
 Nominal Impedance |
8 ohms
vs
4 ohms
|
Less selective with amplifiers |
 Number of Woofers |
4
vs
2
|
More woofers |
 Height |
1301mm
vs
1331mm
|
Easier to fit in smaller spaces |
 Price per pair* |
6000USD
vs
7400USD
|
costs less (*prices may change depending on the seller, location and time) |
|
Woofer Size |
7 inches
vs
6.5 inches
|
Larger woofer |
|
Low Frequency Response |
28 Hz
vs
46 Hz
|
Generates deeper bass |
 High Frequency Response |
50k Hz
vs
28k Hz
|
Generates higher frequency |
 Base Surface Area |
959cm2
vs
1213cm2
|
Takes less floor space |
| General |
KEF R11 |
ELAC VELA FS 409 |
| Brand |
KEF |
ELAC |
| Speaker Type |
Floor-standing speaker |
Floor-standing speaker |
| Power Range |
15-300 watts |
40-200 watts |
| Sensitivity |
90 dB |
89 dB |
| Impedance |
8 ohms |
4 ohms |
| Impedance |
3.2 ohms |
n/a |
| Frequency Response |
46-28k Hz |
28-50k Hz |
Drivers |
|
|
| Woofer Quantity |
4 |
2 |
| Woofer Size |
6.5" |
7" |
| Woofer Composition |
Hybrid Aluminum |
Aluminum/Paper |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
- |
| Tweeter Type |
Dome |
handmade JET 5 folded ribbon |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
5" |
6" |
| Crossover Frequency |
400Hz and 2900Hz |
n/a |
| Firing Direction |
rear |
n/a |
Physical Specs |
|
|
| Height |
1301.0mm (51.2") |
1331.0mm (52.4") |
| Width |
312.0mm (12.3") |
278.0mm (10.9") |
| Depth |
389.0mm (15.3") |
345.0mm (13.6") |
| Weight |
37.70kg (82.9lbs) |
32.18kg (70.8lbs) |
| Enclosure |
Bass Reflex |
Bass Reflex |
| Finish |
MDF/Lacquer |
MDF/Aluminum |
| Available Colors |
Black Gloss, White Gloss, Walnut |
Gloss Black |
| Grille |
Yes |
n/a |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
Yes |
Yes |
Other |
|
|
| Parts Warranty |
5 Years |
3 Years |
| Labor Warranty |
5 Years |
3 Years |
No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.
| Area | Better | Why |
|---|
| Bass | B | ELAC VELA FS 409 digs deeper - 28Hz against 46Hz. |
| Amplifier needs | evenly matched | Similar sensitivity (90dB vs 89dB) - both want much the same power. |
| Amplifier match | A | KEF R11 is the easier load at 8 ohms; the other is 4 ohms and wants an amplifier rated for it. |
| Headroom | A | KEF R11 takes more power (300W vs 200W) - more in hand in a big room. |
| Size | depends | Similar cabinet size - neither is easier to fit. |
| Expandability | depends | KEF R11: bi-amping; ELAC VELA FS 409: bi-amping. |
| Price | A | KEF R11 is cheaper - $6,000 against $7,400, about 19% less. |
A KEF R11 B ELAC VELA FS 409
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?
KEF R11 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 46Hz anyway, which makes the cheaper KEF R11 much easier to justify. Match it to your room: we rate KEF R11 the better fit for a very large room, and ELAC VELA FS 409 for a mid-size 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.