In this review, we will be comparing two different types of speakers by JBL. JBL Studio 620 is a Bookshelf speaker whereas the Studio 6 88LCR is a In-wall speaker.
Let's have a brief look at the main features
of JBL Studio 620 and JBL Studio 6 88LCR first before getting into our more
detailed comparison.
| Key Specs | JBL Studio 620 | JBL Studio 6 88LCR |
|---|
| Brand | JBL
United States · founded 1946 | JBL
United States · founded 1946 |
|---|
| Design | 2-way | 2-way |
|---|
| Tweeter | 1" High Frequency Compression | 1" Horn-Loaded |
|---|
| Woofer | 5.25" PolyPlas | 2 x 8" PolyPlas |
|---|
| Frequency response | 50-40k Hz | 43-20kHz |
|---|
| Sensitivity | 84 dB | 96 dB |
|---|
| Impedance | 6 ohms | 6 ohms |
|---|
| Power range | up to 100 watts | 10-175 watts |
|---|
| Weight | 6.88kg / 15.1lbs | — |
|---|
| Dimensions (H x W x D) | 12.3" x 7-1/2" x 9-1/2"
312.0 x 190.0 x 240.0mm | 20.4375" x 8.7500" x 3.7500"
520.0 x 223.0 x 96.0mm |
|---|
Studio 620 and Studio 6 88LCR are members of JBL's Studio series of speakers. Below you can find the loudspeakers from this series.
JBL Studio Series
History
What size room are the JBL Studio 620 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* |
JBL Studio 620 |
JBL Studio 6 88LCR |
| 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.
Drivers
Both Studio 620 and Studio 6 88LCR are 2-way speakers.
JBL Studio 620JBL 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 |
JBL Studio 620 |
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
|
Studio 620 features a 1" High Frequency Compression Tweeter and 1 x 5.25" PolyPlas Woofer. On the other hand, the Studio 6 88LCR features a 1" Horn-Loaded Tweeter and 2 x 8" PolyPlas Woofer.
Frequency Response
Studio 620 has a frequency range of 50-40k Hz whereas Studio 6 88LCR has a frequency range of 43-20kHz. 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 Studio 620's min frequency of 50Hz.
The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the Bookshelf class in our database.
Low Frequency
Bookshelf Speakers
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 620 and Studio 6 88LCR have the same Impedance of 6 ohms but where they differ is the sensitivity levels. Studio 620 sensitivity is rated at 84 dB and the Studio 6 88LCR's is at 96 dB. This 12 dB difference makes the JBL Studio 6 88LCR a more sensitive speaker compared to JBL Studio 620, hence will play louder with the same amount of watts.
Sensitivity
Bookshelf Speakers
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 Studio 620 has a max power handling value of 100 watts RMS, 75 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.
Input Type and Bi-Amping / Bi-Wiring
Studio 620 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 JBL Studio 620's and JBL Studio 6 88LCR's external dimensions. JBL Studio 620 has external dimensions of 312.0 x 190.0 x 240.0mm (12.3 x 7-1/2inch x 9-1/2inch) 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).
JBL Studio 620 is 33mm narrower and 208mm shorter than JBL Studio 6 88LCR but it is also 144mm deeper.
What's in the Box of JBL Studio 620?
Here are the items that are included inside the box of Studio 620:
- 2 x JBL Studio 630 Bookshelf Loudspeaker
- 1 x Owner’s Manual
- 1 x Warranty Card
- 8 x Feet Pads
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