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  1. Home
  2. Passive In-wall Speakers
  3. ELAC IW-DC51-W vs JBL Studio 6 88LCR

ELAC IW-DC51-W vs JBL Studio 6 88LCR Comparison

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Speaker to replace
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ELAC IW-DC51-W

Passive In-wall | 45-20kHz

ELAC IW-DC51-W
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JBL Studio 6 88LCR

Passive In-wall | 43-20kHz

JBL Studio 6 88LCR
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ELAC IW-DC51-W ELAC IW-DC51-W
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JBL Studio 6 88LCR JBL Studio 6 88LCR
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ELAC IW-DC51-W
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JBL Studio 6 88LCR
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ELAC IW-DC51-W vs JBL Studio 6 88LCR Speaker Comparison

In this review, we will be comparing IW-DC51-W and Studio 6 88LCR, two Passive In-wall speakers from ELAC and JBL.

Let's have a brief look at the main features of ELAC IW-DC51-W and JBL Studio 6 88LCR first before getting into our more detailed comparison.

Key SpecsELAC IW-DC51-WJBL Studio 6 88LCR
BrandELAC
Germany · founded 1926
JBL
United States · founded 1946
Design2-way2-way
Tweeter1" Soft-Dome1" Horn-Loaded
Woofer5.25" Woven Aramid-Fiber2 x 8" PolyPlas
Frequency response45-20kHz43-20kHz
Sensitivity87 dB96 dB
Impedance6 ohms6 ohms
Power range30-120 watts10-175 watts
Weight4.85kg / 10.7lbs—
Dimensions (H x W x D)6.2500" x 16.5000" x 3.3750"
159.0 x 420.0 x 86.0mm
20.4375" x 8.7500" x 3.7500"
520.0 x 223.0 x 96.0mm

What size room are the ELAC IW-DC51-W and JBL Studio 6 88LCR 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* ELAC IW-DC51-W JBL Studio 6 88LCR
Near-field Poor Poor
Small Room Average Average
Mid-size Room Good Good
Large Room Average Average
Very Large Room Poor 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.


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


Drivers

Both IW-DC51-W and Studio 6 88LCR are 2-way speakers.

Tweeter - 1 inchWoofer - 5.25 inch
ELAC IW-DC51-W
Tweeter - 1 inchWoofer - 8 inchWoofer - 8 inch
JBL Studio 6 88LCR

TweeterWoofer

Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.

Driver ELAC IW-DC51-W JBL Studio 6 88LCR
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 1 x 5.25-inch 2 x 8-inch

IW-DC51-W features a 1" Soft-Dome Tweeter and 1 x 5.25" Woven Aramid-Fiber Woofer. On the other hand, the Studio 6 88LCR features a 1" Horn-Loaded Tweeter and 2 x 8" PolyPlas Woofer.

Frequency Response

IW-DC51-W has a frequency range of 45-20kHz whereas Studio 6 88LCR has a frequency range of 43-20kHz. With a minimum frequency of 43Hz, the Studio 6 88LCR can go slightly deeper then the IW-DC51-W's min frequency of 45Hz.

The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the In-wall class in our database.

Low Frequency

In-wall Speakers

IW-DC51-W
Studio 6 88LCR
Min
Average
Median

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

IW-DC51-W and Studio 6 88LCR have the same Impedance of 6 ohms but where they differ is the sensitivity levels. IW-DC51-W sensitivity is rated at 87 dB and the Studio 6 88LCR's is at 96 dB. This 9 dB difference makes the JBL Studio 6 88LCR a more sensitive speaker compared to ELAC IW-DC51-W, hence will play louder with the same amount of watts.

Sensitivity

In-wall Speakers

IW-DC51-W
Studio 6 88LCR
Min
Average
Median

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.

Studio 6 88LCR can handle a max power of 175 watts RMS, whereas IW-DC51-W has a max power handling value of 120 watts RMS, 55 watts less than the Studio 6 88LCR.

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.

ELAC IW-DC51-W
 
JBL Studio 6 88LCR
 

Input Type and Bi-Amping / Bi-Wiring

IW-DC51-W features Spring posts type posts and Studio 6 88LCR has a Spring posts 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 ELAC IW-DC51-W's and JBL Studio 6 88LCR's external dimensions. ELAC IW-DC51-W has external dimensions of 159.0 x 420.0 x 86.0mm (6.2500-inch x 16.5000-inch x 3.3750-inch) whereas JBL Studio 6 88LCR has external dimensions of 520.0 x 223.0 x 96.0mm (20.4375-inch x 8.7500-inch x 3.7500-inch).

ELAC IW-DC51-W is 361mm shorter and 10mm less deeper than JBL Studio 6 88LCR but it is also 197mm wider.

Below you can see the front view size comparison of ELAC IW-DC51-W and JBL Studio 6 88LCR in scale.

ELAC IW-DC51-W vs JBL Studio 6 88LCR Size Comparison - Front View
Comparison image of ELAC IW-DC51-W and JBL Studio 6 88LCR Size and External Dimensions

What's in the Box of ELAC IW-DC51-W?

Here are the items that are included inside the box of IW-DC51-W:
  • In-wall center-channel speaker
  • Grille

What's in the Box of JBL Studio 6 88LCR?

Here are the items that come with the Studio 6 88LCR:
  • In-wall loudspeaker
  • Grille
  • Cut-Out Template
  • Quick Start Guide


Reasons to choose ELAC IW-DC51-W over JBL Studio 6 88LCR

Height 159mm vs 520mm Easier to fit in smaller spaces
Price per pair* 660USD vs 1600USD costs less (*prices may change depending on the seller, location and time)

Reasons to choose JBL Studio 6 88LCR over ELAC IW-DC51-W

Max Input Power 175 watts vs 120 watts Handle more power from your amplifier
Sensitivity 96 dB vs 87 dB Play louder with same amount of amplification power
Woofer Size 8 inches vs 5.25 inches Larger woofer
Number of Woofers 2 vs 1 More woofers
Low Frequency Response 43 Hz vs 45 Hz Generates deeper bass
Base Surface Area 214cm2 vs 361cm2 Takes less floor space

ELAC IW-DC51-W vs JBL Studio 6 88LCR Specs Table

Detailed comparison of specifications
General ELAC IW-DC51-W JBL Studio 6 88LCR
Brand ELAC JBL
Speaker Type Passive In-wall Speaker Passive In-wall Speaker
Power Range 30-120 watts 10-175 watts
Sensitivity 87 dB 96 dB
Impedance 6 ohms 6 ohms
Frequency Response 45-20kHz 43-20kHz
Drivers
Woofer Quantity 1 2
Woofer Size 5.25" 8"
Woofer Composition Woven Aramid-Fiber PolyPlas
Woofer Surround Material Rubber Rubber
Tweeter Size 1" 1"
Tweeter Type Soft-Dome Horn-Loaded
Aimable Tweeter No No
Midrange Driver No No
Physical Specs
Height 159.0mm (6.3") 520.0mm (20.5")
Width 420.0mm (16.5") 223.0mm (8.8")
Depth 86.0mm (3.4") 96.0mm (3.8")
Weight 4.85kg (10.7lbs) n/a
Enclosure In-wall In-wall
Moisture Resistancy No No
Connections
Biamp Inputs No No
Other
Parts Warranty 3 Years 5 Years
Labor Warranty 3 Years 5 Years

Verdict

These sit in different price classes - JBL Studio 6 88LCR costs roughly 2.4x what ELAC IW-DC51-W does. Expect it to lead on paper; the question is whether the gap is audible enough in your room to be worth it.

AreaBetterWhy
Bassevenly matchedMuch the same reach (45Hz vs 43Hz).
Amplifier needsBJBL Studio 6 88LCR is more sensitive (96dB vs 87dB), so it goes louder on the same amplifier.
HeadroomBJBL Studio 6 88LCR takes more power (175W vs 120W) - more in hand in a big room.
SizedependsELAC IW-DC51-W is easier to place; JBL Studio 6 88LCR is bigger, which usually goes with fuller bass. Your room decides.
PriceAELAC IW-DC51-W is cheaper - $660 against $1,600, about 59% less; arguably a different class.

A ELAC IW-DC51-W  B JBL Studio 6 88LCR
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?

The usual trade-off: JBL Studio 6 88LCR measures better, ELAC IW-DC51-W costs about about 142% more% less. Whether that gap is worth the money is the call only you can make - and in a normal room it is often smaller than the numbers suggest. In a large or open-plan room, JBL Studio 6 88LCR has the cabinet volume to fill it more easily; in a small room, near a wall or at desk distance, ELAC IW-DC51-W is the easier speaker to get right. If your amplifier is modest, vintage or valve-based, JBL Studio 6 88LCR is the safer partner - the other will want more current or more watts to sound its best.

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.


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