JBL K2 S9900 is a 3-way Passive Bass Reflex Floor-standing speaker by JBL. It was released in 2010. It features a 4" Compression Driver Tweeter and 1 x 15" Pure Pulp Woofer.
Project K2: a 15 inch 1500AL-1 pulp-cone woofer, a 4 inch 476Mg magnesium compression driver on a Sonoglass horn, and a supertweeter crossed in at 15 kHz. Both crossover slopes are 24 dB per octave. 82.7 kg each, and 93 dB sensitive.
The speaker has a frequency range of 48-50k Hz and a sensitivity of 93 dB. JBL K2 S9900 has an MSRP of 44000$ per pair.
Room Size Suitability
The size of the room where you plan to use the JBL K2 S9900 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Are you nuts? |
| Small Room | Poor |
| Mid-size Room | Average |
| Large Room | Good |
| Very Large Room | Good |
(* 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.)
JBL's Project Series of Loudspeakers
K2 S9900 is a member of JBL's Project series of Passive speakers. Below you can see the main specs of these speakers.
JBL Project Series Speakers
Frequency Response of the JBL K2 S9900 Speaker
JBL K2 S9900 has a Frequency response range of 48-50k Hz and Power Range of up to 500 watts. With a minimum frequency of 48 Hz, K2 S9900 delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
Here we have a comparison of how K2 S9900's Low frequency value compares with the average, max and min Low frequency values in its class.
Low Frequency
Floor-standing Speakers
Thinking about a subwoofer for the JBL K2 S9900?
Among the speakers in our database at any price, these are the 5 Passive Floor-standing speakers that have deeper bass than the JBL K2 S9900's 48Hz:
Crossover frequency of the JBL K2 S9900?
K2 S9900 is a 3-way speaker and its crossover frequency between the woofer and the midrange is set to 900 Hz and the crossover frequency between the midrange and the tweeter is set to 15000 Hz.
Impedance and Sensitivity
JBL K2 S9900's nominal impedance level is
8 ohms and has a sensitivity of
93 dB.
Sensitivity
Floor-standing Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so JBL K2 S9900 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
93dB of the JBL K2 S9900 is considered a high sensitivity compared to average stereo speaker which makes K2 S9900 an easy to drive from Sensitivity perspective. If you are planning to power your speaker with a Tube amp which are generally very low power, the JBL K2 S9900 will be a good choice. Work out how loud the JBL K2 S9900 plays in your room →
What amplifier does the JBL K2 S9900 need?
At normal listening levels in a medium room, about
3.8–60 W
per channel into 8 ohms.
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Input Type
K2 S9900 has Binding post type connectors and lets bi-amping/bi-wiring. Bi-wiring can enhance the overall transparency of your loudspeakers by using separate speaker wires for the low and high-frequency drivers from a single amplifier. Bi-amping, on the other hand, involves using separate amplifiers for the high and low-frequency drivers, potentially resulting in a greater dynamic range and reduced distortion.
Work out what gauge speaker cable this run needs →
JBL K2 S9900 External Dimensions and Weight
JBL K2 S9900 has external dimensions of (Height x Width x Depth) 47-1/4 x 22-1/16 x 13-3/4inch (1200.0 x 560.0 x 350.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of JBL K2 S9900 is approximately 1960.0cm2 / 303.8inch2.
Find speakers that fit your shelf or alcove → · Work out where they should sit in the room →
WeightThe JBL K2 S9900 weighs 82.70kg / 181.9lbs per piece. Here is a comparison of how K2 S9900's weight compares with the average, max and min weights in its class.
Weight
All Floor-standing Speakers
Weight
Floor-standing Speakers over $20,000
Cabinet type and Materials
JBL K2 S9900 has a
Bass Reflex type cabinet. Bass Reflex type loudspeakers (aka Ported, Vented or Reflex Port) have enclosures that uses a port, hole or vent cut into the cabinet. Ported designs are generally more efficient than the Sealed designs.
Does the JBL K2 S9900 come with a Grille?
K2 S9900 comes with grilles. The purpose of the grille is to protect the delicate driver elements from external impacts while still allowing the sound to pass as clearly as possible.
Recommended Accessories
Here is a list of accessories that we think you may need for the JBL K2 S9900.
Official Product Page
Official manufacturer's product page for the JBL K2 S9900 speaker can be found below:
Official Product Page for JBL K2 S9900