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JBL Studio 620 vs JBL Studio 630 Comparison

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JBL Studio 620

Passive Bookshelf | 50-40k Hz

JBL Studio 620
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JBL Studio 630

Passive Bookshelf | 45-40k Hz

JBL Studio 630
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JBL Studio 620 JBL Studio 620
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JBL Studio 630 JBL Studio 630
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JBL Studio 620
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JBL Studio 630
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JBL Studio 620 vs JBL Studio 630 Speaker Comparison

In this review, we will be comparing Studio 620 and Studio 630, two Passive Bookshelf speakers by JBL

Let's have a brief look at the main features of JBL Studio 620 and JBL Studio 630 first before getting into our more detailed comparison.

JBL Studio 620 Key Specs

  • 2-way Design
  • 1" High Frequency Compression Tweeter
  • 5.25" PolyPlas Woofer
  • 50-40k Hz Frequency Response
  • 84 dB Sensitivity
  • Impedance: 6ohms
  • Power Range:up to 100watts
  • Weight:6.88kg
  • Dimensions (H x W x D): 312.0" x 7-1/2" x 9-1/2"( 190 x 240 x 312mm )

JBL Studio 630 Key Specs

  • 2-way Design
  • 1" High Frequency Compression Tweeter
  • 6.25" PolyPlas Woofer
  • 45-40k Hz Frequency Response
  • 85 dB Sensitivity
  • Impedance: 6ohms
  • Power Range:up to 150watts
  • Weight:9.02kg
  • Dimensions (H x W x D): 372.0" x 9-1/16" x 11-1/16"( 230 x 280 x 372mm )

Studio 620 and Studio 630 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 2 55IW
  
In-wall 40-20kHz 88 dB8Ω 2 x 5.25"
JBL Studio 6 Theater
  
In-wall 65-20kHz 96 dB6Ω 4 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 620 and JBL Studio 630 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 630
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.)

In the following sections, we will get into more detail in order to better understand how the JBL Studio 620 and JBL Studio 630 compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


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


Drivers

Both Studio 620 and Studio 630 are 2-way speakers.

Driver JBL Studio 620 JBL Studio 630
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 1 x 5.25-inch 1 x 6.25-inch

Studio 620 features a 1" High Frequency Compression Tweeter and 1 x 5.25" PolyPlas Woofer . On the other hand, the Studio 630 features a 1" High Frequency Compression Tweeter and 1 x 6.25" PolyPlas Woofer .

Frequency Response

Studio 620 has a frequency range of 50-40k Hz whereas Studio 630 has a frequency range of 45-40k Hz. With a minimum frequency of 45Hz, the Studio 630 can go significantly deeper on the low side and provide stronger bass compared to the Studio 620's min frequency of 50Hz.

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 Bookshelf class in our database.

Low Frequency

Bookshelf Speakers

Studio 620
Studio 630
Min
Average
Max
High Frequency

Bookshelf Speakers

JBL Studio 620
JBL Studio 630
Min
Average
Max

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 620 and Studio 630 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 630's is at 85 dB. This 1 dB difference makes the JBL Studio 630 a more sensitive speaker compared to JBL Studio 620, hence will play louder with the same amount of watts.

Sensitivity

Bookshelf Speakers

Studio 620
Studio 630
Min
Average
Max

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 620 can handle a max power of 150 watts RMS from the amp the whereas Studio 620 has a max power handling value of 100 watts RMS , 50 watts less than the Studio 630.

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 620 features 5-Way post type posts and Studio 630 has a 5-Way post type posts. None of these speakers feature bi-amping/bi-wiring.

Cabinet Type and Port Position

Both Studio 620 and Studio 630 have rear firing ports. Rear ported speakers generally need more room between the backside of the speaker and the wall compared to sealed and front/bottom ported speakers. Placing the speakers too close to the walls may cause the bass to sound boomy.

If you are limited in space and can't get the speakers away from the backwall, check our Speakers with Front Firing Ports page.

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 620's and JBL Studio 630's external dimensions. JBL Studio 620 has external dimensions of 190 x 240 x 312mm ( 12.3 x 7-1/2inch x 9-1/2inch ) whereas JBL Studio 630 has external dimensions of 230 x 280 x 372mm ( 14.6 x 9-1/16inch x 11-1/16inch ) .

JBL Studio 630 is clearly the larger of the two speakers. Its body is 40mm wider, 60mm taller and 40mm deeper than JBL Studio 620.

Base Surface Area Comparison
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited. The base surface area of the JBL Studio 620 is approximately 456.0cm2 / 70.7inch2 and base area of the JBL Studio 630 is approximately 644.0cm2 / 99.8inch2. The Studio 620 requires 29% less surface area than the Studio 630 which gives it a small advantage on placement in tight spaces.

Weight Comparison

The weight of a loudspeaker can become an important factor if you need to move and reposition the unit often. Weight of a speaker can also "sometimes" be an indicator of the rigidity of the enclosure and the quality of the internal components used. The JBL Studio 620 weighs 6.88kg / 15.1lbs and the JBL Studio 630 weighs 9.02kg / 19.8lbs. This makes the Studio 630 31% heavier than the Studio 620.

Here is a comparison of how Studio 620 and Studio 630's weights compare with the average, max and min weights in Passive Bookshelf class.

Weight
All Bookshelf Speakers
JBL Studio 620
JBL Studio 630
Min
Average
Max

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 630?

    Here are the items that come with the Studio 630:
  • 2 x JBL Studio 630 Bookshelf Loudspeaker
  • 1 x Owner’s Manual
  • 1 x Warranty Card
  • 8 x Feet Pads

  • Reasons to choose JBL Studio 620 over JBL Studio 630
    Height 312mm vs 372mm Easier to fit in smaller spaces
    Base Surface Area 456cm2 vs 644cm2 Takes less floor space

    Reasons to choose JBL Studio 630 over JBL Studio 620

    Max Input Power 150 watts vs 100 watts Handle more power from your amplifier
    Sensitivity 85 dB vs 84 dB Play louder with same amount of amplification power
    Woofer Size 6.25 inches vs 5.25 inches Larger woofer
    Low Frequency Response 45 Hz vs 50 Hz Generates deeper bass
    JBL Studio 620 vs JBL Studio 630 Specs Table
    Detailed comparison of specifications
    General JBL Studio 620 JBL Studio 630
    Brand JBL JBL
    Speaker Type Bookshelf speakers Bookshelf speakers
    Power Range up to 100 watts up to 150 watts
    Sensitivity 84 dB 85 dB
    Impedance 6 ohms 6 ohms
    Frequency Response 50-40k Hz 45-40k Hz
    Drivers
    Woofer Quantity 1 1
    Woofer Size 5.25" 6.25"
    Woofer Composition PolyPlas PolyPlas
    Tweeter Size 1" 1"
    Tweeter Type High Frequency Compression High Frequency Compression
    Aimable Tweeter No No
    Midrange Driver No No
    Firing Direction rear rear
    Physical Specs
    Height 312.0mm (12.3") 372.0mm (14.6")
    Width 190.0mm (7.5") 230.0mm (9.1")
    Depth 240.0mm (9.4") 280.0mm (11")
    Weight 6.88kg (15.1lbs) 9.02kg (19.8lbs)
    Enclosure Bass Reflex Bass Reflex
    Finish MDF/Wood veneer MDF/Wood veneer
    Available Colors Wood, Dark Wood Wood, Dark Wood
    Mounting Bracket No No
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Biamp Inputs No No
    Other
    Parts Warranty 5 Years 5 Years
    Labor Warranty 5 Years 5 Years

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