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  1. Home
  2. Passive In-wall Speakers
  3. JBL Studio 6 Architectural 8IW vs JBL Studio 6 66LCR

JBL Studio 6 Architectural 8IW vs JBL Studio 6 66LCR Comparison

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JBL Studio 6 Architectural 8IW

Passive In-wall | 43-20kHz

JBL Studio 6 Architectural 8IW
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JBL Studio 6 66LCR

Passive In-wall | 45-20kHz

JBL Studio 6 66LCR
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JBL Studio 6 Architectural 8IW JBL Studio 6 Archite...
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JBL Studio 6 66LCR JBL Studio 6 66LCR
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JBL Studio 6 Archite...
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JBL Studio 6 66LCR
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JBL Studio 6 Architectural 8IW vs JBL Studio 6 66LCR Speaker Comparison

In this review, we will be comparing Studio 6 Architectural 8IW and Studio 6 66LCR, two Passive In-wall speakers by JBL.

Let's have a brief look at the main features of JBL Studio 6 Architectural 8IW and JBL Studio 6 66LCR first before getting into our more detailed comparison.

Key SpecsJBL Studio 6 Architectural 8IWJBL Studio 6 66LCR
BrandJBL
United States · founded 1946
JBL
United States · founded 1946
Design2-way2-way
Tweeter1" Horn-Loaded1" Horn-Loaded
Woofer8" Polyplas2 x 6.5" PolyPlas
Frequency response43-20kHz45-20kHz
Sensitivity93 dB94 dB
Impedance6 ohms6 ohms
Power range10-80 watts10-150 watts
Dimensions (H x W x D)12.5000" x 8.7500" x 3.6875"
318.0 x 223.0 x 94.0mm
17.4375" x 7.1250" x 3.7500"
443.0 x 181.0 x 96.0mm

Studio 6 Architectural 8IW and Studio 6 66LCR are members of JBL's Studio series of speakers. Below you can find the loudspeakers from this series.

JBL Studio Series History
Model Body Frequency SensitivityImpedance Woofer
JBL Studio 630
  
Bookshelf 45-40k Hz 85 dB6Ω 1 x 6.25"
JBL Studio 620
  
Bookshelf 50-40k Hz 84 dB6Ω 1 x 5.25"
JBL Studio 680
  
Floor-standing 38-40k Hz 88 dB6Ω 2 x 6.5"
JBL Studio 690
  
Floor-standing 36-40k Hz 90 dB6Ω 2 x 8"
JBL Studio 6 88LCR
  
In-wall 43-20kHz 96 dB6Ω 2 x 8"
JBL Studio 6 Theater
  
In-wall 65-20kHz 96 dB6Ω 4 x 5.25"
JBL Studio 2 55IW
  
In-wall 40-20kHz 88 dB8Ω 2 x 5.25"
JBL Studio 6 66LCR
In-wall 45-20kHz 94 dB6Ω 2 x 6.5"
JBL Studio 6 Architectural 8IW
In-wall 43-20kHz 93 dB6Ω 1 x 8"
JBL Studio 2 8IW
  
In-wall 30-20kHz 88 dB8Ω 1 x 8"

What size room are the JBL Studio 6 Architectural 8IW and JBL Studio 6 66LCR 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* JBL Studio 6 Architectural 8IW JBL Studio 6 66LCR
Near-field Average Poor
Small Room Good Average
Mid-size Room Average Good
Large Room Poor Average
Very Large Room Bad 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 Studio 6 Architectural 8IW and Studio 6 66LCR are 2-way speakers.

Tweeter - 1 inchWoofer - 8 inch
JBL Studio 6 Architectural 8IW
Tweeter - 1 inchWoofer - 6.5 inchWoofer - 6.5 inch
JBL Studio 6 66LCR

TweeterWoofer

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

Driver JBL Studio 6 Architectural 8IW JBL Studio 6 66LCR
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 1 x 8-inch 2 x 6.5-inch

Studio 6 Architectural 8IW features a 1" Horn-Loaded Tweeter and 1 x 8" Polyplas Woofer. On the other hand, the Studio 6 66LCR features a 1" Horn-Loaded Tweeter and 2 x 6.5" PolyPlas Woofer.

Frequency Response

Studio 6 Architectural 8IW has a frequency range of 43-20kHz whereas Studio 6 66LCR has a frequency range of 45-20kHz. With a minimum frequency of 43Hz, the Studio 6 Architectural 8IW can go slightly deeper then the Studio 6 66LCR'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

Studio 6 Architectural 8IW
Studio 6 66LCR
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

Studio 6 Architectural 8IW and Studio 6 66LCR have the same Impedance of 6 ohms but where they differ is the sensitivity levels. Studio 6 Architectural 8IW sensitivity is rated at 93 dB and the Studio 6 66LCR's is at 94 dB. This 1 dB difference makes the JBL Studio 6 66LCR a more sensitive speaker compared to JBL Studio 6 Architectural 8IW, hence will play louder with the same amount of watts.

Sensitivity

In-wall Speakers

Studio 6 Architectural 8IW
Studio 6 66LCR
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 66LCR can handle a max power of 150 watts RMS, whereas Studio 6 Architectural 8IW has a max power handling value of 80 watts RMS, 70 watts less than the Studio 6 66LCR.

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.

JBL Studio 6 Architectural 8IW
 
JBL Studio 6 66LCR
 

Input Type and Bi-Amping / Bi-Wiring

Studio 6 Architectural 8IW features Spring posts type posts and Studio 6 66LCR 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 JBL Studio 6 Architectural 8IW's and JBL Studio 6 66LCR's external dimensions. JBL Studio 6 Architectural 8IW has external dimensions of 318.0 x 223.0 x 94.0mm (12.5000-inch x 8.7500-inch x 3.6875-inch) whereas JBL Studio 6 66LCR has external dimensions of 443.0 x 181.0 x 96.0mm (17.4375-inch x 7.1250-inch x 3.7500-inch).

JBL Studio 6 Architectural 8IW is 125mm shorter and 2mm less deeper than JBL Studio 6 66LCR but it is also 42mm wider.

What's in the Box of JBL Studio 6 Architectural 8IW?

Here are the items that are included inside the box of Studio 6 Architectural 8IW:
  • In-wall loudspeaker
  • Grille
  • Cut-Out Template
  • Quick Start Guide

What's in the Box of JBL Studio 6 66LCR?

Here are the items that come with the Studio 6 66LCR:
  • In-wall loudspeaker
  • Grille
  • Cut-Out Template
  • Quick Start Guide


Reasons to choose JBL Studio 6 Architectural 8IW over JBL Studio 6 66LCR

Woofer Size 8 inches vs 6.5 inches Larger woofer
Low Frequency Response 43 Hz vs 45 Hz Generates deeper bass
Height 318mm vs 443mm Easier to fit in smaller spaces
Price per pair* 1300USD vs 1400USD costs less (*prices may change depending on the seller, location and time)

Reasons to choose JBL Studio 6 66LCR over JBL Studio 6 Architectural 8IW

Max Input Power 150 watts vs 80 watts Handle more power from your amplifier
Sensitivity 94 dB vs 93 dB Play louder with same amount of amplification power
Number of Woofers 2 vs 1 More woofers
Base Surface Area 173cm2 vs 209cm2 Takes less floor space

JBL Studio 6 Architectural 8IW vs JBL Studio 6 66LCR Specs Table

Detailed comparison of specifications
General JBL Studio 6 Architectural 8IW JBL Studio 6 66LCR
Brand JBL JBL
Speaker Type Passive In-wall Speaker Passive In-wall Speaker
Power Range 10-80 watts 10-150 watts
Sensitivity 93 dB 94 dB
Impedance 6 ohms 6 ohms
Frequency Response 43-20kHz 45-20kHz
Drivers
Woofer Quantity 1 2
Woofer Size 8" 6.5"
Woofer Composition Polyplas PolyPlas
Woofer Surround Material Rubber Rubber
Tweeter Size 1" 1"
Tweeter Type Horn-Loaded Horn-Loaded
Aimable Tweeter No No
Midrange Driver No No
Physical Specs
Height 318.0mm (12.5") 443.0mm (17.4")
Width 223.0mm (8.8") 181.0mm (7.1")
Depth 94.0mm (3.7") 96.0mm (3.8")
Enclosure In-wall In-wall
Moisture Resistancy No No
Connections
Biamp Inputs No No
Other
Parts Warranty 5 Years 5 Years
Labor Warranty 5 Years 5 Years

Verdict

Siblings in JBL's Studio series, so they share a family sound. It comes down to size, output and price.

AreaBetterWhy
Bassevenly matchedMuch the same reach (43Hz vs 45Hz).
Amplifier needsevenly matchedSimilar sensitivity (93dB vs 94dB) - both want much the same power.
HeadroomBJBL Studio 6 66LCR takes more power (150W vs 80W) - more in hand in a big room.
SizedependsSimilar cabinet size - neither is easier to fit.
Priceevenly matchedMuch the same money ($1,300 vs $1,400 a pair).

A JBL Studio 6 Architectural 8IW  B JBL Studio 6 66LCR
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?

JBL Studio 6 66LCR has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. Match it to your room: we rate JBL Studio 6 Architectural 8IW the better fit for near-field listening and a small room, and JBL Studio 6 66LCR for a mid-size room and a large 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.


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