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JBL 308P MkII Powered 8" Two-Way Studio Monitor

BH #JB308PMKII • MFR #308P MKII
JBL 308P MkII Powered 8" Two-Way Studio Monitor
Key Features
  • Bi-Amplified Powered Reference Monitor
  • Dual 56W Class-D Amplifiers
  • Low Frequency Woofer: 8"
  • Neodymium Woven-Composite Tweeter: 1"
Audio engineers, producers, and musicians looking for a high-quality monitoring solution will be impressed with the  JBL 308P MkII - Powered 8" Two-Way Studio Monitor, a bi-amplified reference monitor with next-generation drivers, offering high detail, precise imaging, a wide sweet spot, and a remarkable dynamic range to enhance the mix capabilities of any modern workspace. The magnetically-shielded 308P MkII features dual 56W Class-D amplifiers, which power the 8" low frequency woofer and woven-composite 1" neodymium tweeter. The combined output of the woofer and tweeter offer a frequency response of 45 Hz to 20 kHz with a peak SPL of 112 dB.
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JBL 308P MKII Overview

Audio engineers, producers, and musicians looking for a high-quality monitoring solution will be impressed with the  JBL 308P MkII - Powered 8" Two-Way Studio Monitor, a bi-amplified reference monitor with next-generation drivers, offering high detail, precise imaging, a wide sweet spot, and a remarkable dynamic range to enhance the mix capabilities of any modern workspace. The magnetically-shielded 308P MkII features dual 56W Class-D amplifiers, which power the 8" low frequency woofer and woven-composite 1" neodymium tweeter. The combined output of the woofer and tweeter offer a frequency response of 45 Hz to 20 kHz with a peak SPL of 112 dB.

The monitor features JBL's Image Control Waveguide technology for accurate audio reproduction and JBL's Slip Stream port design for improved bass response. The 308P MkII is equipped with a boundary EQ for controlling the low frequency response when placed near a wall, as well as a 3-position HF trim switch. To ensure flexible connectivity, JBL included a balanced XLR input and a balanced 1/4" TRS input, both of which feature dented level control. Other features include a selectable input sensitivity switch that ensures compatibility with a range of signal sources. The JBL 308P MkII ships with a power cord.

  • Patented Image Control Waveguide for detailed imaging and a broad, room-friendly sweet spot
  • High-quality JBL transducers for optimized transient response and improved linearity
  • Patented Slip Stream low-frequency port for superior bass performance at all playback levels
  • Dual integrated, custom Class-D amplifiers provide 112W of power for high output and dynamic range
  • Boundary EQ settings compensate for low-frequency variants introduced by the environment
  • HF Trim switch adjusts high-frequency output to room acoustics or personal preferences
  • Flexible connectivity with balanced XLR and 1/4" TRS inputs, +4 dBu / -10 dBV input-sensitivity switch and adjustable volume control
  • Engineered to JBL Linear Spatial Reference design criteria for outstanding accuracy in any working space
  • Strenuous JBL 100-hour full-power test ensures years of reliability
  • Sleek, modern design provides a visual upgrade to any studio
UPC: 691991007729

JBL 308P MKII Specs

Key Specs
Monitor Type & Configuration
Active 2-Way
Total Power Output
112 W
Tweeter
1 x 1" / 25.4 mm Dome
Woofer
1 x 8" / 20.3 cm Cone
Frequency Range
37 Hz to 24 kHz (-10 dB)
Audio I/O
1 x XLR 3-Pin Balanced Input
1 x 1/4" TRS Balanced Input
Number of Included Monitors
Single Monitor
Enclosure
Bass-Reflex/Ported, Shielded
Total Power Output
112 W
Drivers
Tweeter
1 x 1" / 25.4 mm Dome
Woofer
1 x 8" / 20.3 cm Cone
Amplifiers
HF: 1 x 56 W Class-D
LF: 1 x 56 W Class-D
Performance
Frequency Range
37 Hz to 24 kHz (-10 dB)
Frequency Response
45 Hz to 20 kHz ± 3 dB
Maximum Sound Pressure Level (SPL)
112 dB
Signal-to-Noise Ratio
75 dBA
Total Harmonic Distortion (THD)
<10%
THD+N
< 0.2%
Maximum Input Level
+20.3 dBu (Balanced)
+6 dBV (Unbalanced)
Protections and Limiting
Peak Limiter
Signal Processing
EQ
HF Shelf
LF Shelf
Crossover Frequency
1800 Hz, 24 dB/Octave Slope
Crossover Type
Linkwitz-Riley
Connectivity
Audio I/O
1 x XLR 3-Pin Balanced Input
1 x 1/4" TRS Balanced Input
Network I/O
None
USB
None
Wireless
None
Power
AC Input Power
100 to 240 VAC, 50/60 Hz
Color
Black
Enclosure Material
ABS, MDF
Dimensions (W x H x D)
10 x 16.5 x 12.1" / 254 x 419.1 x 307.3 mm
Weight
17.9 lb / 8.1 kg
Packaging Info
Package Weight
21.68 lb
Box Dimensions (LxWxH)
19 x 13 x 13"

JBL 308P MKII Reviews

Great Home Monitor Package!

By Gregg
Rated 5 out of 5
Date: 2023-01-14

I haven't used the speakers a lot yet, but everything so far is great! I very much appreciate having the cables, isolation pads and the Senal controller as part of the package. The cabinets are larger than I expected so I will eventually buy some floor stands and put them behind my work table to give me a bit more setback. Very happy with the purchase but I would also consider the smaller speakers.

Great Overall Monitor

By William
Rated 5 out of 5
Date: 2021-12-13

Excellent mid-range and treble clarity. Great workhorse for a monitor.

LOVE IT

By Marvelyn
Rated 5 out of 5
Date: 2021-10-27

FASTSHIPPING NO HASSLE.

Better than expected

By Chris
Rated 5 out of 5
Date: 2021-05-22

I have a pair of 308 MkII (to jam on a PC) and 305 MkII (for a keyboard). I am blown away from the sound of both. I am an audiophile with expensive speakers in every room I can fit them including some that cost over 10K each and these little JBL studio monitors give just as much detail as the big boys.

Five Stars for sure

By Anthony
Rated 4 out of 5
Date: 2021-05-10

Amazing, Amazing, Amazing!!! Great customer service and great product. Loving my new JBL monitors...

Perfect starter kit!

By Kyle
Rated 5 out of 5
Date: 2021-04-27

This is my first studio monitor setup and it is wonderful! The isolation pads are more essential than I thought. Everything come quickly, setup beautifully, and works flawlessly.

All You Need

By Peter
Rated 5 out of 5
Date: 2022-10-02

This is a great kit for hooking up your laptop to pristine studio monitors. It's all there and at a fair price. But most importantly, these JBL's sound terrific. They produce accurately and without strain. You can certainly spend more on 8" monitors and to some ears and on paper others may seem better, but to me, these JBL's look good enough on paper and sound fabulous in my studio. I would heartily recommend them.

Precise and dependable!

By DJDQmusic
Rated 5 out of 5
Date: 2021-12-19

It is said that “You are as good as the tools you work with” and I couldn’t be happier with these monitors. As a passion, I do remix work in my home studio and for the first time I am able to listen to my projects and hear amazing sounds I didn’t hear before. My work has improved so much more because of all the details these monitors provide.

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Can the amplifier be bypassed to use as passive speakers?
Asked by: Anonymous
This is an active speaker, with the amplifiers built in, so it would not be used as a passive speaker. JBL LSR708i 8&quot; Master Reference Monitor (Single), BH #JBLSR708I would be a very god quality passive reference monitor to consider.
Answered by: Steve
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Can you add a subwoofer?

Can you add a subwoofer?
Asked by: Steven
Yes, a subwoofer such as the JBL LSR310S 200W Powered 10&quot; Subwoofer(BH #JBLSR310S) is a great pairing for the JBL 308P MkII Powered 8&quot; Two-Way Studio Monitors. You would feed the subwoofer from your main output signal, then feed the monitors from the subwoofer outputs. Link to LSR310S here: https://bhpho.to/3DCLlTY
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can i use only one speaker to connect to a laptop ...

can i use only one speaker to connect to a laptop computer?
Asked by: Gilbert
Yes, you can use a single speaker with a laptop computer.
Answered by: Lisa
Date published: 2022-01-06

Good to use with AV receivers as Front right/left ...

Good to use with AV receivers as Front right/left bookshelf speakers?
Asked by: Nagendra
These JBL studio monitors would sound great as front surround speakers, but they must come out of the pre amp, and given an audio only signal, because they have their own built-in power.
Answered by: Steve
Date published: 2022-01-06

Is there an EU power cord version available? One ...

Is there an EU power cord version available? One for use in Germany?
Asked by: Ryan
It supports both US and European voltages so all you would need is a standard US to German plug adapter not a voltage convertor. Also, the end which goes into the speaker is the standard computer power cable format so a cable should be easy to find.
Answered by: Michael
Date published: 2022-01-06

Do I need anything else to connect to my Mac ...

Do I need anything else to connect to my Mac Studio? Cables etc
Asked by: Dan
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Answered by: Lisa
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None of my audio output devices have balanced ...

None of my audio output devices have balanced connections - yet the back of the 305P's only have balanced inputs. If I use, let's say an audio cable that has a TRS connector on end (going to the speakers), and an RCA cable on the other end (going to my audio sources), will this work with the 305's?
Asked by: Bernd
It will work. For instance, I use them with my phone headset jack as the source. It may pick up more noise, but that may be an issue only with very long cables and in a professional situation. I never noticed any noise with my setup.
Answered by: Luigi
Date published: 2022-01-06

Can these be placed laying on their side?

Can these be placed laying on their side?
Asked by: kristopher
Yes, they can.
Answered by: Robert
Date published: 2021-07-10
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