JBL Professional: 308P MkII active monitors

REVIEWED BY Geoff Stanfield

With the glut of studio monitors available today, it can be easy to forget that JBL was among just a handful of top-notch choices available in the not-too-distant past. I reviewed the JBL Professional 705P monitors [Tape Op #163] and was blown away by just how fantastic these compact units performed. Monitors are a personal choice for sure, but I really thought they sounded first-rate, especially for one with a 5-inch woofer; they made the cut as a second set of speakers for mixing alongside my Focal Trio6 Be [#114] mains. I have recommended the 705Ps to many friends in audio, but if you are not a working audio professional, or just getting your start in production or mixing, the price tag of over $1000 per speaker might be more than most are willing to shell out. The good news is that JBL 3 Series MkII monitors (available with 5, 6, or 8-inch woofers) have many of the same features that make the 7 Series so attractive, but at a budget-friendly price.

The 308P MkII I was sent for review have 8-inch woofers, JBL’s patented waveguide tweeter technology, and, in many ways, look similar to the 7 Series design. The units accept both XLR and TRS inputs, and include separate controls for input sensitivity, boundary EQ, and high-frequency trim to help users fine tune the playback in their listening space. They have a claimed frequency response of 45 Hz to 20 kHz (±3 dB), a fixed crossover at 1.8 kHz, and a max SPL of 112 dB, with 112 watts of power distributed evenly at 56 watts each to both high and low frequency drivers. The cabinet is a rear-ported design made of medium-density fiberboard, weighing approximately 21 pounds each.

At roughly $600 a pair, the 308P MkIIs are a compelling choice. They have a wide sweet spot and maintain a balanced presentation throughout the listening position. My room is pretty well treated, and large enough so I can position the monitors away from any walls. However, for those with limited space, the MkII’s boundary EQ options can help tame the low end when placed close to a wall.