SpeakerDecision
  • SPEAKERS by TYPE
    • Passive Bookshelf Speakers
    • Passive Floor-standing Speakers
    • Passive Center Channel Speakers
    • Passive In-wall Speakers
    • All Passive Speakers
    • Powered Subwoofers
    • Powered Stereo Speakers
  • AMPLIFIERS
  • SMART FIND

Klipsch The Sevens vs ELAC Navis ARB-51 Comparison

x
Speaker to replace
Change

Klipsch The Sevens

Powered Bookshelf | 39-25k Hz

Klipsch The Sevens
CHECK PRICE
Change
    
ELAC Navis ARB-51

Powered Bookshelf | 44-28k Hz

ELAC Navis ARB-51
CHECK PRICE
Klipsch The Sevens Klipsch The Sevens
See at AMAZON
ELAC Navis ARB-51 ELAC Navis ARB-51
See at AMAZON
Klipsch The Sevens
See at AMAZON
ELAC Navis ARB-51
See at AMAZON
Klipsch The Sevens vs ELAC Navis ARB-51 Speaker Comparison

In this review, we will be comparing The Sevens and Navis ARB-51, two Powered Bookshelf speakers from Klipsch and ELAC. Being Powered speakers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them.

Let's have a brief look at the main features of Klipsch The Sevens and ELAC Navis ARB-51 first before getting into our more detailed comparison.

Klipsch The Sevens Key Specs

  • 2-way Design
  • 200-watt RMS( 400-watt Peak) Integrated Amplifier
  • 1" Tractrix Horn Tweeter
  • 6.5" Fiber-composite Woofer
  • 39-25k Hz Frequency Response
  • 24-bit Max Depth / 192 kHz Max Sample Rate
  • Built-in 5.0 Bluetooth
  • App Control Feature
  • Weight:9.03kg
  • Dimensions (H x W x D): 416.0" x 8.125" x 13.1875"( 416.0 x 207.0 x 335.0mm )

ELAC Navis ARB-51 Key Specs

  • 3-way Design
  • 300-watt RMS( 600-watt Peak) Integrated Amplifier
  • 1" Soft-Dome Tweeter
  • 4" Midrange
  • 5.25" Aluminum Woofer
  • 4" Midrange
  • 44-28k Hz Frequency Response
  • Optional Bluetooth
  • Weight:8.10kg
  • Dimensions (H x W x D): 350.8" x 7.5625" x 11.3125"( 350.8 x 192.1 x 287.3mm )

In the following sections, we will get into more detail in order to better understand how the Klipsch The Sevens and ELAC Navis ARB-51 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.


Drivers

One of the fundamental differences between these two speakers is that The Sevens is a 2-way design whereas the Navis ARB-51 is a 3-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.

Driver Klipsch The Sevens ELAC Navis ARB-51
Driver Setup 2-way 3-way
Tweeter 1-inch 1-inch
Midrange - 1 x 4-inch
Woofer 1 x 6.5-inch 1 x 5.25-inch

The Sevens features a 1" Titanium Tractrix Horn Tweeter and 1 x 6.5" Fiber-composite Woofer . On the other hand, the Navis ARB-51 features a 1" Fabric Soft-Dome Tweeter , a 4" Midrange and 1 x 5.25" Aluminum Woofer .

Frequency Response

The Sevens has a frequency range of 39-25k Hz whereas Navis ARB-51 has a frequency range of 44-28k Hz. With a minimum frequency of 39Hz, the The Sevens can go significantly deeper on the low side and provide stronger bass compared to the Navis ARB-51's min frequency of 44Hz.

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

The Sevens
Navis ARB-51
Min
Average
Max
High Frequency

Bookshelf Speakers

Klipsch The Sevens
ELAC Navis ARB-51
Min
Average
Max

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.

Cabinet Type and Port Position

Both The Sevens and Navis ARB-51 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 Klipsch The Sevens's and ELAC Navis ARB-51's external dimensions. Klipsch The Sevens has external dimensions of 416.0 x 207.0 x 335.0mm ( 16.375inch x 8.125inch x 13.1875inch ) whereas ELAC Navis ARB-51 has external dimensions of 350.8 x 192.1 x 287.3mm ( 13.8125 x 7.5625 x 11.3125inch) .

Klipsch The Sevens is clearly the larger of the two speakers. Its body is 14.9mm wider, 65.2mm taller and 47.7mm deeper than ELAC Navis ARB-51.

Below you can see the front view size comparison of Klipsch The Sevens and ELAC Navis ARB-51 in scale.

Klipsch The Sevens vs ELAC Navis ARB-51 Size Comparison - Front View
Comparison image of Klipsch The Sevens and ELAC Navis ARB-51 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 Klipsch The Sevens is approximately 693.5cm2 / 107.5inch2 and base area of the ELAC Navis ARB-51 is approximately 551.9cm2 / 85.5inch2. The The Sevens requires 26% more surface area than the Navis ARB-51 which gives it a small disadvantage 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:

Klipsch The Sevens vs ELAC Navis ARB-51 Size Comparison on a Media Console
Size Comparison image of Klipsch The Sevens and ELAC Navis ARB-51 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 Klipsch The Sevens weighs 9.03kg / 19.9lbs and the ELAC Navis ARB-51 weighs 8.10kg / 17.8lbs. This makes the The Sevens 11% heavier than the Navis ARB-51.

Here is a comparison of how The Sevens and Navis ARB-51's weights compare with the average, max and min weights in Powered Bookshelf class.

Weight
All Bookshelf Speakers
Klipsch The Sevens
ELAC Navis ARB-51
Min
Average
Max

What's in the Box of Klipsch The Sevens?

Here are the items that are included inside the box of The Sevens:
  • Powered speaker (Primary)
  • Passive speaker (Secondary)
  • 2 Grilles (pre-installed)
  • 6.5-feet AC power cord
  • 13-feet Proprietary speaker cable
  • 6.5-feet Proprietary extension cable
  • 58-inch HDMI cable
  • 5-feet USB-B to USB-A cable
  • Remote control
  • 2 AAA batteries
  • Instruction Booklet
  • Need Help? Card
  • What's in the Box of ELAC Navis ARB-51?

    Here are the items that come with the Navis ARB-51:
  • 2 Powered bookshelf loudspeakers
  • Two 8-feet AC power cords
  • Operating Instructions

  • Reasons to choose Klipsch The Sevens over ELAC Navis ARB-51
    Woofer Size 6.5 inches vs 5.25 inches Larger woofer
    Low Frequency Response 39 Hz vs 44 Hz Generates deeper bass
    Handheld Remote Yes vs No Control the speaker by the included RC
    App-Based Control Apple iOS, Android vs None Control the speaker via an app
    Price per pair* 1299USD vs 1998USD costs less (*prices may change depending on the seller, location and time)
    USB Port USB-B vs No USB port adds flexibility
    3.5mm Connection Yes vs No Connection via 3.5mm AUX input
    Phono Input Yes vs No Connect your turntable directly
    Digital Input Optical, HDMI vs No Connect digital inputs directly
    HDMI Input ARC vs No Connect HDMI sources directly
    Subwoofer Output mono-RCA vs No Pair your speakers with external subwoofer

    Reasons to choose ELAC Navis ARB-51 over Klipsch The Sevens

    Driver Setup 3-way vs 2-way Have a dedicated mid-range driver
    High Frequency Response 28k Hz vs 25k Hz Generates higher frequency
    Height 350mm vs 416mm Easier to fit in smaller spaces
    Base Surface Area 551cm2 vs 693cm2 Takes less floor space
    RCA Connection Yes vs No Connection via RCA input
    XLR Connection Yes vs No Connection via XLR input
    Klipsch The Sevens vs ELAC Navis ARB-51 Specs Table
    Detailed comparison of specifications
    General Klipsch The Sevens ELAC Navis ARB-51
    Brand Klipsch ELAC
    Speaker Type Powered Stereo Speakers Powered Stereo Speakers
    Frequency Response 39-25k Hz 44-28k Hz
    Amplifier
    Watts RMS (Continuous) 200-watt RMS 300-watt RMS
    Watts Peak (Max) 400-watt RMS 600-watt RMS
    Max Bit Depth 24-bit n/a
    Max Sample Rate 192 kHz n/a
    Drivers
    Woofer Quantity 1 1
    Woofer Size 6.5" 5.25"
    Woofer Composition Fiber-composite Aluminum
    Tweeter Size 1" 1"
    Tweeter Type Tractrix Horn Soft-Dome
    Aimable Tweeter No No
    Midrange Driver No 4"
    Firing Direction rear rear
    Physical Specs
    Height 416.0mm (16.4") 350.8mm (13.8")
    Width 207.0mm (8.1") 192.1mm (7.6")
    Depth 335.0mm (13.2") 287.3mm (11.3")
    Weight 9.03kg (19.9lbs) 8.10kg (17.8lbs)
    Enclosure Bass Reflex Bass Reflex
    Finish MDF with genuine wood veneer n/a
    Available Colors Black,Walnut n/a
    Mounting Bracket No No
    Grille Yes n/a
    Moisture Resistancy No No
    Connections
    Aux Inputs 3.5mm XLR, RCA
    USB Port USB-B No
    Phone Input Yes No
    Subwoofer Output mono-RCA No
    Digital Input Optical, HDMI No
    HDMI Input ARC No
    Headphone Jack No No
    Ethernet Port No No
    Other
    Parts Warranty 1 Year 3 Years
    Labor Warranty 1 Year 3 Years

    Most Popular Speakers
    Klipsch Reference R-51M
    Klipsch R-51M
    2-way | 93 dB | 8 ohms
    Wharfedale Elysian 2
    Wharfedale Elysian 2
    3-way | 89 dB | 4 ohms
    ELAC Debut 2.0 B6.2
    ELAC Debut 2.0 B6.2
    2-way | 87 dB | 6 ohms
    Bowers & Wilkins 606 S2 Anniversary Edition
    B&W 606 S2
    2-way | 88 dB | 8 ohms
    KEF Q150
    KEF Q150
    2-way | 86 dB | 8 ohms
    Klipsch Reference Premiere RP-500M
    Klipsch RP-500M
    2-way | 93 dB | 8 ohms
    Wharfedale EVO4.1
    Wharfedale EVO4.1
    2-way | 87 dB | 8 ohms
    Bowers & Wilkins 606
    B&W 606
    2-way | 88 dB | 8 ohms
    Copyright © 2025 by SpeakerDecision
    About Privacy Contact US Camera Decision

    Report a Correction