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Yes, that was their original design goal. Nonetheless, they can be used for HT whether in 2.0 or as part of a surround setup (though this is more troublesome with all the individual power cords needed as well as a receiver with full pre-outs). JBL does make their own soundbar/pseudo-sub combos, lol.
It would be damn near impossible to find large passive bookshelves with anything approaching these JBLs' sound quality for $150 a pop.
The JBL 308P MkII is a powered near field studio monitor that stands out for neutral, fatigue free sound and strong value at this price. It can fill a fairly large room, works well for mixing, desktop audio, and even home theater with the right setup, and the low end reaches deeper than the smaller 305P. The main tradeoffs are practical ones, since each speaker needs power, there is no HDMI or digital input, and the back panel volume control can be awkward with a TV. The cabinets also have no grills, so the tweeters and woofers need a little care.
Home studio mixers wanting accurate near-field playback, because the sound is flat, neutral, and low-fatigue for mixing.
They can work with a TV, but they are not soundbar substitutes and they have no HDMI inputs. You'll need extra connection gear and, for easy volume control, a preamp or other volume-control device; a receiver with full pre-outs can also work.
They can play full enough for many rooms on their own, with a measured low end around 43 Hz. A sub is still helpful for deeper bass and higher movie output, and the 308s are more satisfying without a sub than the smaller 305/306 models.
They are powered monitors, so each speaker needs its own power cable and they are not meant to connect straight to a cheap AVR. For desktop use they work well, but the setup is less convenient than passive speakers because you also need to manage the stereo input and volume control.
The 308P MkII reaches deeper bass and is more satisfying without a sub than the 305/306 models, with the 308s dropping off around 45 Hz versus about 60 Hz for the 305s. If you want the larger cabinet and fuller low end, the 308s are the better pick; the 306Ps are the cheaper alternative.
They sound excellent, but they have no grills and the dome tweeters and woofers can be damaged more easily than on speakers with heavy-duty protection. They are best suited to studio or careful hi-fi use rather than rough handling.
I have the Mk1, which have been great. These are not small. They take up quite a bit of real estate on my desk. I do audio recording and use them for mixing, but I also use them for all sound through my PC. I have a set of the 305 model at my office. Excelent value.
These are powered monitors (they each need a standard power cable and half of the stereoy input). The Mk1 version gets plenty loud to fill a room.
Monitors are meant to be EQd pretty flat so that they can let hear what is there vs some speakers that are tuned to sound pleasant.
should i get these, or the klipsch 600m ii that occasionally pops up on slickdeals? I know these JBL's are already powered, but in terms of just upgrading my Dayton Audio b652 which is better? Thanks in advance!
should i get these, or the klipsch 600m ii that occasionally pops up on slickdeals? I know these JBL's are already powered, but in terms of just upgrading my Dayton Audio b652 which is better? Thanks in advance!
I'd take these over the Klipsch --- the JBL will be more neutral and less likely to cause ear fatigue.
How loud are these? My use case is in my 4,000sqft work shop for loud tunes via Bluetooth adapter . Currently using a 20 year old onkyo 2.1 home theater setup
I'm never sure how to judge stereo systems.
I have the Mk1, which have been great. These are not small. They take up quite a bit of real estate on my desk. I do audio recording and use them for mixing, but I also use them for all sound through my PC. I have a set of the 305 model at my office. Excelent value.
These are powered monitors (they each need a standard power cable and half of the stereoy input). The Mk1 version gets plenty loud to fill a room.
Monitors are meant to be EQd pretty flat so that they can let hear what is there vs some speakers that are tuned to sound pleasant.
should i get these, or the klipsch 600m ii that occasionally pops up on slickdeals? I know these JBL's are already powered, but in terms of just upgrading my Dayton Audio b652 which is better? Thanks in advance!
The klipsch 600m measure poorly. Not sure if anybody's measured the mkii, but not reason to think they'll be better.
Klipsch makes some (not all) excellent value subs and a rare good speaker, but mainly they chase cheapness and image over quality sound. Hey, it makes them successful.
I have an earlier model of these., as well as the substantially smaller 305s. The -3dB point on these is 43 Hz. The weird thing is the -3dB point on of the 305Ps is 45 Hz, not much different despite the much smaller woofer size.
This is a situation where specs don't show the reality. 305s start dropping off around 60hz. 308s start dropping off around 45. I think that you can get away without a sub either way if you really don't care, but the 308s will be much more satisfying without a sub than the 305s or 306s. Even my 708s do way better with a sub, though.
These are large and beefy. They are intended for a Sound Bench?
8" JBL Professional 308P MkII 2-Way Powered Studio Monitor
16.5" High x 10" Wide x 12.1" Deep
419mm High x 254mm Wide x 308mm Deep
Weight: 17.87 lbs (8.1 kg)
That's pretty lightweight though - I'm surprised how light these would be for the size. They must be some thin plastic. Less an issue with the limited low end extension. My 20 year old 8-inch active monitors and other 20 year old 8-inch standard passive bookshelf speakers are both over 30lb per, for comparison. As a disclaimer though, there may be magnetic shielding involved with possibly both of them, from that era, adding to those weight figures!
I haven't heard these, but they always look like they'd be a great value option when they hit sale prices. Used prices aren't much lower. Likely a much better option for many people compared to the Klipsch non-monitor powered speakers that always show up on here for a much higher price, and have amps that fail within a handful of years...
Last edited by Masejoer October 13, 2026 at 11:02 PM.
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It would be damn near impossible to find large passive bookshelves with anything approaching these JBLs' sound quality for $150 a pop.
Community Reviews
The JBL 308P MkII is a powered near field studio monitor that stands out for neutral, fatigue free sound and strong value at this price. It can fill a fairly large room, works well for mixing, desktop audio, and even home theater with the right setup, and the low end reaches deeper than the smaller 305P. The main tradeoffs are practical ones, since each speaker needs power, there is no HDMI or digital input, and the back panel volume control can be awkward with a TV. The cabinets also have no grills, so the tweeters and woofers need a little care.
Common Questions (5)
They can work with a TV, but they are not soundbar substitutes and they have no HDMI inputs. You'll need extra connection gear and, for easy volume control, a preamp or other volume-control device; a receiver with full pre-outs can also work.
They can play full enough for many rooms on their own, with a measured low end around 43 Hz. A sub is still helpful for deeper bass and higher movie output, and the 308s are more satisfying without a sub than the smaller 305/306 models.
They are powered monitors, so each speaker needs its own power cable and they are not meant to connect straight to a cheap AVR. For desktop use they work well, but the setup is less convenient than passive speakers because you also need to manage the stereo input and volume control.
The 308P MkII reaches deeper bass and is more satisfying without a sub than the 305/306 models, with the 308s dropping off around 45 Hz versus about 60 Hz for the 305s. If you want the larger cabinet and fuller low end, the 308s are the better pick; the 306Ps are the cheaper alternative.
They sound excellent, but they have no grills and the dome tweeters and woofers can be damaged more easily than on speakers with heavy-duty protection. They are best suited to studio or careful hi-fi use rather than rough handling.
AI-generated summary based on comments from the community. Updated ago
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These are powered monitors (they each need a standard power cable and half of the stereoy input). The Mk1 version gets plenty loud to fill a room.
Monitors are meant to be EQd pretty flat so that they can let hear what is there vs some speakers that are tuned to sound pleasant.
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I'm never sure how to judge stereo systems.
These are powered monitors (they each need a standard power cable and half of the stereoy input). The Mk1 version gets plenty loud to fill a room.
Monitors are meant to be EQd pretty flat so that they can let hear what is there vs some speakers that are tuned to sound pleasant.
Klipsch makes some (not all) excellent value subs and a rare good speaker, but mainly they chase cheapness and image over quality sound. Hey, it makes them successful.
8" JBL Professional 308P MkII 2-Way Powered Studio Monitor
16.5" High x 10" Wide x 12.1" Deep
419mm High x 254mm Wide x 308mm Deep
Weight: 17.87 lbs (8.1 kg)
I haven't heard these, but they always look like they'd be a great value option when they hit sale prices. Used prices aren't much lower. Likely a much better option for many people compared to the Klipsch non-monitor powered speakers that always show up on here for a much higher price, and have amps that fail within a handful of years...
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Join The Conversation
Share your experience with the Slickdeals community
Share information with the community. Please follow our Community Guidelines and be kind!