In this review, we will be comparing Studio 6 88LCR and RC65i, two Passive In-wall speakers from JBL and Polk Audio. Let's have a brief look at the main features
of JBL Studio 6 88LCR and Polk Audio RC65i first before getting into our more
detailed comparison.
JBL Studio 6 88LCR Key Specs
- 2-way Design
- 1" Horn-Loaded Tweeter
- 2 x 8" PolyPlas Woofer
- 43-20kHz Frequency Response
- 96 dB Sensitivity
- Impedance: 6ohms
- Power Range:10-175watts
- Dimensions (H x W x D): 520.0" x 8.7500" x 3.7500"( 520.0 x 223.0 x 96.0mm )
Polk Audio RC65i Key Specs
- 2-way Design
- 0.75" Hard-Dome Tweeter
- 6.5" Polypropylene Woofer
- 60-20kHz Frequency Response
- 89 dB Sensitivity
- Impedance: 8ohms
- Power Range:20-100watts
- Dimensions (H x W x D): 274.0" x 7.3125" x 2.4070"( 274.0 x 186.0 x 62.0mm )
What size room are the JBL Studio 6 88LCR and Polk Audio RC65i 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 88LCR |
Polk Audio RC65i |
| Near-field |
Poor |
Average |
| Small Room |
Average |
Good |
| Mid-size Room |
Good |
Average |
| Large Room |
Average |
Poor |
| Very Large Room |
Poor |
Bad |
(* 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.)
In the following sections, we will get into more detail in order to better understand how the JBL Studio 6 88LCR and Polk Audio RC65i compare 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 Studio 6 88LCR and RC65i are 2-way speakers.
| Driver |
JBL Studio 6 88LCR |
Polk Audio RC65i |
|
Driver Setup
|
2-way
|
2-way
|
|
Tweeter
|
1-inch
|
0.75-inch
|
|
Midrange
|
- |
- |
|
Woofer
|
2 x 8-inch
|
1 x 6.5-inch
|
Studio 6 88LCR features a 1" Horn-Loaded Tweeter and 2 x 8" PolyPlas Woofer . On the other hand, the RC65i features a 0.75" Hard-Dome Tweeter and 1 x 6.5" Polypropylene Woofer .
Frequency Response
Studio 6 88LCR has a frequency range of 43-20kHz whereas RC65i has a frequency range of 60-20kHz. With a minimum frequency of 43Hz, the Studio 6 88LCR can go significantly deeper on the low side and provide stronger bass compared to the RC65i's min frequency of 60Hz.
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 In-wall class in our database.
Low Frequency
In-wall Speakers
High Frequency
In-wall Speakers
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.
Impedance and Sensitivity
Studio 6 88LCR is a 6 ohms speaker compared to the RC65i which has a nominal impedance of 8 ohms.
These two speakers also have different sensitivity levels. Studio 6 88LCR sensitivity is rated at 96 dB and the RC65i's is rated at 89 dB. This 7 dB difference makes the JBL Studio 6 88LCR a more sensitive speaker compared to Polk Audio RC65i, hence will play louder with the same amount of watts.
Sensitivity
In-wall 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.
Studio 6 88LCR can handle a max power of 175 watts RMS from the amp the whereas RC65i has a max power handling value of 100 watts RMS, 75 watts less than the Studio 6 88LCR.
Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker
compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters
such as Impedance, sensitivity and system efficiencies.
Input Type and Bi-Amping / Bi-Wiring
Studio 6 88LCR features Spring clip type posts and RC65i has a Spring clip type posts. None of these speakers feature bi-amping/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 JBL Studio 6 88LCR's and Polk Audio RC65i's external dimensions. 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) whereas Polk Audio RC65i has external dimensions of 274.0 x 186.0 x 62.0mm ( 10.7500-inch x 7.3125-inch x 2.4070-inch) .
JBL Studio 6 88LCR is clearly the larger of the two speakers. Its body is 37mm wider, 246mm taller and 34mm deeper than Polk Audio RC65i.
What's in the Box of JBL Studio 6 88LCR?
Here are the items that are included inside the box of Studio 6 88LCR:
In-wall loudspeakerGrilleCut-Out TemplateQuick Start Guide
What's in the Box of Polk Audio RC65i?
Here are the items that come with the RC65i:
2 White in-wall speakers2 White grilles1 Cardboard Mounting TemplateOwners ManualOnline registration sheetProduct Registration Card
Max Input Power 
Sensitivity 
Woofer Size 
Nominal Impedance 
Height 
Base Surface Area 
Price per pair*