In this review, we will be comparing Model Three and EVO4.1, two Passive Bookshelf speakers from KLH and Wharfedale. Let's have a brief look at the main features of KLH Model Three and Wharfedale EVO4.1 first before getting into our more detailed comparison.
In the following sections, we will get into details in order to better understand how KLH Model Three and Wharfedale EVO4.1 compares 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 EVO4.1 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, EVO4.1 features a 1.18x2.36" AMT (Ribbon) Tweeter and 1 x 5" Kevlar Woofer .
Frequency Response
Model Three has a frequency range of 46-20k Hz whereas EVO4.1 has a frequency range of 64-22k 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 EVO4.1's min frequency of 64Hz.
Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers under Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
High Frequency
Bookshelf Speakers
Impedance and Sensitivity
Model Three is a 6 ohms speaker compared to EVO4.1 which has a nominal impedance of 8 ohms. These two speakers also have different sensitivity levels. Model Three sensitivity is rated at 88 dB and EVO4.1's is at 87 dB. This 1 dB difference makes KLH Model Three a more sensitive speaker compared to Wharfedale EVO4.1, 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. 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 EVO4.1 has a max power handling value of 100 watts RMS, 50 watts less than the Model Three.
Keep in mind that higher max power handling value doesn't necesssarily make that a louder speaker compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters such as Impededance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
EVO4.1 features Post posts which makes 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
Wharfedale EVO4.1's 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 Wharfedale EVO4.1'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 Wharfedale EVO4.1 has external dimensions of 335.0 x 210.0 x 295.0mm ( 13.1 x 8.2 x 11.6inch) .
Wharfedale EVO4.1 is 101mm narrower and 147mm shorter than KLH Model Three but it is also 28mm 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 Wharfedale EVO4.1 is approximately 619.5cm2 / 96.0inch2. The Model Three requires 34% more surface area than the EVO4.1 which gives it a small disadvantage on placement in tight spaces.
