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JBL Stage A120P vs Definitive Technology ProSub 1000 Comparison
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Subwoofer to replace
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JBL Stage A120P

Powered Subwoofer | 32-150 Hz

JBL Stage A120P
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Definitive ProSub 1000

Powered Subwoofer | 18-150 Hz

Definitive Technology ProSub 1000
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JBL Stage A120P JBL Stage A120P
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Definitive ProSub 1000 Definitive ProSub 10...
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JBL Stage A120P
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Definitive ProSub 10...
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JBL Stage A120P vs Definitive ProSub 1000 Speaker Comparison

In this review, we will be comparing A120P and ProSub 1000, two Powered Subwoofer speakers from JBL and Definitive Technology. Being Powered subwoofers, they both have built-in amplifiers so you don't need an external power amp or an integrated amp to power them. Let's have a brief look at the main features of JBL Stage A120P and Definitive ProSub 1000 first before getting into our more detailed comparison.

JBL Stage A120P Key Specs

  • 12" Polycellulose Woofer
  • 32-150 Hz Frequency Response
  • 250 watts Max Amplifier Output
  • Weight:18.68kg
  • Dimensions (H x W x D): 415.0" x 15-7/16" x 18-11/16"( 415.0 x 393.0 x 475.0mm )

Definitive ProSub 1000 Key Specs

  • 10" Polymer Woofer
  • 18-150 Hz Frequency Response
  • 300 watts Max Amplifier Output
  • Weight:14.09kg
  • Dimensions (H x W x D): 366.0" x 12-1/16" x 19-1/8"( 366.0 x 307.0 x 486.0mm )

In the following sections, we will get into details in order to better understand how the JBL Stage A120P and Definitive ProSub 1000 compare and hopefully end up with enough arguments to decide which one of these subwoofers 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

The efficiency of a subwoofer is directly proportional to the total radiating are squared hence the woofer quantity and diameter.Both JBL Stage A120Pand Definitive ProSub 1000 have a single woofer setup however the JBL Stage A120P's woofer is 12-inch whereas the Definitive ProSub 1000 features a 10-inch woofer.

Frequency Response

A120P has a frequency range of 32-150 Hz whereas ProSub 1000 has a frequency range of 18-150 Hz. With a minimum frequency of 18Hz, the ProSub 1000 can go significantly deeper on the low side and provide stronger bass compared to the A120P's min frequency of 32Hz.

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 Subwoofer class in our database.

Low Frequency

Subwoofer Speakers

JBL Stage A120P
Definitive ProSub 1000
Min
Average
Max
High Frequency

Subwoofer Speakers

JBL Stage A120P
Definitive ProSub 1000
Min
Average
Max

Cabinet Type

The JBL Stage A120P has a Bass reflex type cabinet. On the other hand the Definitive ProSub 1000 have Passive Radiator type enclosure. Passive Radiator type subwoofers sports a non-powered cone that moves in response to the main woofer to move air out in order to generate stronger bass in a smaller body compared to ported or sealed designs.

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 Stage A120P's and Definitive ProSub 1000's external dimensions. JBL Stage A120P has external dimensions of 415.0 x 393.0 x 475.0mm ( 16-5/16 x 15-7/16 x 18-11/16inch) whereas Definitive ProSub 1000 has external dimensions of 366.0 x 307.0 x 486.0mm ( 14-3/8 x 12-1/16 x 19-1/8inch) .

Definitive ProSub 1000 is 86mm narrower and 49mm shorter than JBL Stage A120P but it is also 11mm deeper.

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 Stage A120P is approximately 1866.8cm2 / 289.4inch2 and base area of the Definitive ProSub 1000 is approximately 1492.0cm2 / 231.3inch2. The A120P requires 25% more surface area than the ProSub 1000 which gives it a small disadvantage on placement in tight spaces.

Weight Comparison

The weight of a subwoofer may become an important factor if you need to move and reposition the unit often to find the optimal positioning, also known as 'Subwoofer Crawling'. The JBL Stage A120P weighs 18.68kg / 41.1lbs and the Definitive ProSub 1000 weighs 14.09kg / 31lbs. This makes the A120P 33% heavier than the ProSub 1000.

Here is a comparison of how A120P and ProSub 1000's weights compare with the average, max and min weights in Powered Subwoofer class.

Weight
All Subwoofer Speakers
JBL Stage A120P
Definitive ProSub 1000
Min
Average
Max

What's in the Box of JBL Stage A120P?

Here are the items that are included inside the box of A120P:
  • Powered subwoofer
  • Grille
  • 6-feet AC power cord
  • 4 Spike feet
  • Owners Manual
  • Warranty Card
  • Important Safety Instructions
  • What's in the Box of Definitive ProSub 1000?

    Here are the items that come with the ProSub 1000:
  • 10-inch Powered subwoofer
  • Detachable grille (installed)
  • 7-feet AC power cord
  • Owners Manual
  • Online Product Registration card

  • Reasons to choose JBL Stage A120P over Definitive Technology ProSub 1000
    Woofer Size 12 inches vs 10 inches Larger woofer
    Reasons to choose Definitive Technology ProSub 1000 over JBL Stage A120P
    Low Frequency Response 18 Hz vs 32 Hz Generates deeper bass
    Height 366mm vs 415mm Easier to fit in smaller spaces
    Base Surface Area 1492cm2 vs 1866cm2 Takes less floor space
    JBL Stage A120P vs Definitive ProSub 1000 Specs Table
    Detailed comparison of specifications
    General JBL Stage A120P Definitive Technology ProSub 1000
    Brand JBL Definitive Technology
    Speaker Type Powered Subwoofer Powered Subwoofer
    Max Amplifier Output 250 watts 300 watts
    Frequency Response 32-150 Hz 18-150 Hz
    Amplifier
    Watts RMS (Continuous) 250-watt RMS 300-watt RMS
    Watts Peak (Max) 500-watt RMS n/a
    Drivers
    Woofer Quantity 1 1
    Woofer Size 12" 10"
    Woofer Composition Polycellulose Polymer
    Tweeter Size - -
    Aimable Tweeter No No
    Midrange Driver No No
    Crossover Frequency n/a 40-150 Hz and 80 Hz
    Firing Direction front front
    Physical Specs
    Height 415.0mm (16.3") 366.0mm (14.4")
    Width 393.0mm (15.5") 307.0mm (12.1")
    Depth 475.0mm (18.7") 486.0mm (19.1")
    Weight 18.68kg (41.1lbs) 14.09kg (31lbs)
    Enclosure Bass reflex Passive Radiator
    Grille Yes Yes
    Moisture Resistancy No No
    Connections
    Other
    Parts Warranty 1 Year 3 Years
    Labor Warranty 1 Year 3 Years

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