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

JBL Studio 6 Theater vs JBL Studio 6 66LCR Comparison

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JBL Studio 6 Theater

Passive In-wall | 65-20kHz

JBL Studio 6 Theater
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JBL Studio 6 66LCR

Passive In-wall | 45-20kHz

JBL Studio 6 66LCR
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JBL Studio 6 Theater JBL Studio 6 Theater
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JBL Studio 6 66LCR JBL Studio 6 66LCR
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JBL Studio 6 Theater
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JBL Studio 6 66LCR
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JBL Studio 6 Theater vs JBL Studio 6 66LCR Speaker Comparison

In this review, we will be comparing Studio 6 Theater 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 Theater and JBL Studio 6 66LCR first before getting into our more detailed comparison.

Key SpecsJBL Studio 6 TheaterJBL Studio 6 66LCR
BrandJBL
United States · founded 1946
JBL
United States · founded 1946
Design2-way2-way
Tweeter1" Horn-Loaded1" Horn-Loaded
Woofer4 x 5.25" PolyPlas2 x 6.5" PolyPlas
Frequency response65-20kHz45-20kHz
Sensitivity96 dB94 dB
Impedance6 ohms6 ohms
Power range10-150 watts10-150 watts
Dimensions (H x W x D)25.3125" x 6.2500" x 3.7500"
643.0 x 159.0 x 96.0mm
17.4375" x 7.1250" x 3.7500"
443.0 x 181.0 x 96.0mm

Studio 6 Theater 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 Theater 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 Theater JBL Studio 6 66LCR
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 Studio 6 Theater and Studio 6 66LCR are 2-way speakers.

Tweeter - 1 inchWoofer - 5.25 inchWoofer - 5.25 inchWoofer - 5.25 inchWoofer - 5.25 inch
JBL Studio 6 Theater
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 Theater JBL Studio 6 66LCR
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 4 x 5.25-inch 2 x 6.5-inch

Studio 6 Theater features a 1" Horn-Loaded Tweeter and 4 x 5.25" 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 Theater has a frequency range of 65-20kHz whereas Studio 6 66LCR has a frequency range of 45-20kHz. With a minimum frequency of 45Hz, the Studio 6 66LCR can go significantly deeper on the low side and provide stronger bass compared to the Studio 6 Theater's min frequency of 65Hz.

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 Theater
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 Theater and Studio 6 66LCR have the same Impedance of 6 ohms but where they differ is the sensitivity levels. Studio 6 Theater sensitivity is rated at 96 dB and the Studio 6 66LCR's is at 94 dB. This 2 dB difference makes the JBL Studio 6 Theater a more sensitive speaker compared to JBL Studio 6 66LCR, hence will play louder with the same amount of watts.

Sensitivity

In-wall Speakers

Studio 6 Theater
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 Theater and Studio 6 66LCR have the same power range of 10-150 watts.

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 Theater
 
JBL Studio 6 66LCR
 

Input Type and Bi-Amping / Bi-Wiring

Studio 6 Theater 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 Theater's and JBL Studio 6 66LCR's external dimensions. JBL Studio 6 Theater has external dimensions of 643.0 x 159.0 x 96.0mm (25.3125-inch x 6.2500-inch x 3.7500-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).

What's in the Box of JBL Studio 6 Theater?

Here are the items that are included inside the box of Studio 6 Theater:
  • 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 Theater over JBL Studio 6 66LCR

Sensitivity 96 dB vs 94 dB Play louder with same amount of amplification power
Number of Woofers 4 vs 2 More woofers
Base Surface Area 152cm2 vs 173cm2 Takes less floor space

Reasons to choose JBL Studio 6 66LCR over JBL Studio 6 Theater

Woofer Size 6.5 inches vs 5.25 inches Larger woofer
Low Frequency Response 45 Hz vs 65 Hz Generates deeper bass
Price per pair* 1400USD vs 2600USD costs less (*prices may change depending on the seller, location and time)

JBL Studio 6 Theater vs JBL Studio 6 66LCR Specs Table

Detailed comparison of specifications
General JBL Studio 6 Theater JBL Studio 6 66LCR
Brand JBL JBL
Speaker Type Passive In-wall Speaker Passive In-wall Speaker
Power Range 10-150 watts 10-150 watts
Sensitivity 96 dB 94 dB
Impedance 6 ohms 6 ohms
Frequency Response 65-20kHz 45-20kHz
Drivers
Woofer Quantity 4 2
Woofer Size 5.25" 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 443.0mm (17.4") 443.0mm (17.4")
Width 159.0mm (6.3") 181.0mm (7.1")
Depth 96.0mm (3.8") 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
BassBJBL Studio 6 66LCR digs deeper - 45Hz against 65Hz.
Amplifier needsAJBL Studio 6 Theater is more sensitive (96dB vs 94dB), so it goes louder on the same amplifier.
Headroomevenly matchedSimilar power handling (150W vs 150W).
SizedependsJBL Studio 6 66LCR is easier to place; JBL Studio 6 Theater is bigger, which usually goes with fuller bass. Your room decides.
PriceBJBL Studio 6 66LCR is cheaper - $1,400 against $2,600, about 46% less; arguably a different class.

A JBL Studio 6 Theater  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?

Neither runs away with it - they trade advantages. Let the "depends" rows and your own room settle it. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 65Hz anyway, so judge these on the other rows instead. If your amplifier is modest, vintage or valve-based, JBL Studio 6 Theater 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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