In this review, we will be comparing Model Three and 606 S2 AE, two Passive Bookshelf speakers from KLH and Bowers Wilkins. Let's have a brief look at the main features
of KLH Model Three and B&W 606 S2 first before getting into our more
detailed comparison.
What size room are the KLH Model Three and B&W 606 S2 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 KLH Model Three and B&W 606 S2 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 Model Three and 606 S2 AE are 2-way speakers. Model Three features a 1" Aluminum Tweeter and 1 x 8" Pulp-Paper Cone Woofer with a Crossover frequency at 1600Hz. On the other hand, the 606 S2 AE features a 1" Aluminum Decoupled Double Dome Tweeter and 1 x 6.5" Continuum Woofer .
Frequency Response
Model Three has a frequency range of 46-20k Hz whereas 606 S2 AE has a frequency range of 52-28k Hz. With a minimum frequency of 46Hz, the Model Three can go significantly deeper on the low side and provide stronger bass compared to the 606 S2 AE's min frequency of 52Hz.
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
Model Three is a 6 ohms speaker compared to the 606 S2 AE which has a nominal impedance of 8 ohms.
On the other hand, they have the same sensitivity of 88 dBdB.
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.
Model Three can handle a max power of 150 watts RMS from the amp the whereas 606 S2 AE has a max power handling value of 120 watts RMS, 30 watts less than the Model Three.
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
606 S2 AE features Binding post posts which make bi-amping or bi-wiring possible. Model Three has a Binding post which doesn't feature bi-amping/bi-wiring.
KLH Model Three's Binding post terminals
B&W 606 S2's Binding post terminals allows Bi-amping or bi-wiring
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 KLH Model Three's and B&W 606 S2's external dimensions. KLH Model Three has external dimensions of 482.0 x 311.0 x 267.0mm ( 19.0 x 12.25 x 10.5inch) whereas B&W 606 S2 has external dimensions of 347.0 x 191.0 x 326.0mm ( 13-5/8 x 7-1/2 x 12-13/16inch) .
B&W 606 S2 is 120mm narrower and 135mm shorter than KLH Model Three but it is also 59mm deeper.
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 KLH Model Three is approximately 830.4cm2 / 128.7inch2 and base area of the B&W 606 S2 is approximately 622.7cm2 / 96.5inch2. The Model Three requires 33% more surface area than the 606 S2 AE 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 KLH Model Three weighs 13.20kg / 29lbs and the B&W 606 S2 weighs 6.90kg / 15.2lbs. This makes the Model Three 91% heavier than the 606 S2 AE.
Here is a comparison of how Model Three and 606 S2 AE's weights compare with the average, max and min weights in Passive Bookshelf class.
Weight
All Bookshelf Speakers
What's in the Box of KLH Model Three?
Here are the items that are included inside the box of Model Three:
Floorstanding loudspeakerRiser baseGrilleOwners Manual
What's in the Box of B&W 606 S2?
Here are the items that come with the 606 S2 AE:
2 Bookshelf loudspeakers 2 Grilles 2 Two-piece foam port plugs 8 Self-adhesive rubber feet 4 Jumper-straps (pre-installed) Manual Bowers & Wilkins brochure Warranty Information
 Max Input Power |
150 watts
vs
120 watts
|
Handle more power from your amplifier |
 Woofer Size |
8 inches
vs
6.5 inches
|
Larger woofer |
| Low Frequency Response |
46 Hz
vs
52 Hz
|
Generates deeper bass |
 Nominal Impedance |
8 ohms
vs
6 ohms
|
Less selective with amplifiers |
 High Frequency Response |
28k Hz
vs
20k Hz
|
Generates higher frequency |
 Bi-Amping and Bi-Wiring |
Yes
vs
No
|
Allows bi-amping and bi-wiring connections |
 Height |
347mm
vs
482mm
|
Easier to fit in smaller spaces |
 Base Surface Area |
622cm2 (191x326mm)
vs
830cm2 (311x267mm)
|
Takes less floor space |
| General |
KLH Model Three |
Bowers & Wilkins 606 S2 Anniversary Edition |
| Brand |
KLH |
Bowers Wilkins |
| Speaker Type |
Bookshelf speakers |
Bookshelf speakers |
| Power Range |
30-150 watts |
30-120 watts |
| Sensitivity |
88 dB |
88 dB |
| Impedance |
6 ohms |
8 ohms |
| Impedance |
3.7 ohms |
3.7 ohms |
| Frequency Response |
46-20k Hz |
52-28k Hz |
Drivers |
|
|
| Woofer Quantity |
1 |
1 |
| Woofer Size |
8" |
6.5" |
| Woofer Composition |
Pulp-Paper Cone |
Continuum |
| Woofer Surround Material |
Rubber |
Rubber |
| Tweeter Size |
1" |
1" |
| Tweeter Type |
n/a |
Decoupled Double Dome |
| Aimable Tweeter |
No |
No |
| Midrange Driver |
No |
No |
| Crossover Frequency |
1600Hz |
n/a |
| Firing Direction |
n/a |
rear |
Physical Specs |
|
|
| Height |
482.0mm (19") |
347.0mm (13.7") |
| Width |
311.0mm (12.2") |
191.0mm (7.5") |
| Depth |
267.0mm (10.5") |
326.0mm (12.8") |
| Weight |
13.20kg (29lbs) |
6.90kg (15.2lbs) |
| Enclosure |
Acoustic Suspension |
Bass Reflex |
| Finish |
MDF/Wood Veneer |
MDF/Vinyl |
| Available Colors |
English Walnut, West African Mahogany |
Matte Black, Matte White, Oak, Red Cherry |
| Mounting Bracket |
No |
No |
| Recommended Stand Height |
n/a |
24-26" |
| Grille |
Yes |
Yes |
| Moisture Resistancy |
No |
No |
Connections |
|
|
| Biamp Inputs |
No |
Yes |
Other |
|
|
| Parts Warranty |
10 Years |
5 Years |
| Labor Warranty |
10 Years |
5 Years |