JBL 308P MKII vs Genelec 8341A

Last updated: August 18, 2026

Short answer: the JBL 308P MKII. It ranks #24 of 40 powered bookshelf speakers by sound quality at $498; the Genelec 8341A ranks #36 and costs $6590, so there is not much of a tradeoff to weigh.

What the JBL 308P MKII offers: CEA2034 spinorama shows an essentially flat on-axis response from 45Hz to above 15kHz, with almost no directivity error. Watch for: A resonance shows up around 18kHz and a slight dip around 1.4kHz.

On the Genelec 8341A side: CEA2034 spinorama shows an exceptionally flat on-axis response, within about +1.8dB/-2.2dB of the target curve, with excellent directivity control from the coaxial midrange/tweeter and dual 6.5” woofers. Set against that: The bass amplifier runs out of headroom well before the mid/treble sections.

Buy the JBL 308P MKII. It ranks higher for sound quality than the Genelec 8341A and costs less, so there is no real case for the other one.

If sound quality matters at all to you, skip the Genelec 8341A. It ranks near the bottom of the 40 powered bookshelf speakers, so look higher up the list instead.

JBL 308P MKII vs Genelec 8341A

Specifications Side By Side

JBL 308P MKII Genelec 8341A
Price$498$6590
Ranked#24 of 40 in Large Size Powered Bookshelf Speakers#36 of 40 in Large Size Powered Bookshelf Speakers
Bass Extension (-3dB)82Hz (measured, Audio Science Review)58Hz (measured, Audio Science Review)
Bass Extension (-10dB)60Hz (measured, Audio Science Review)40Hz (measured, Audio Science Review)
Dimensions16.5"H x 10"W x 12.1"D (419.1 x 254 x 307.3 mm)not published by manufacturer
Frequency Response45Hz - 20kHz (+/-3dB) (Manufacturer specified)338Hz - 37kHz (-6dB) (Manufacturer specified)
Weightnot published by manufacturernot published by manufacturer
Drivers8" woofer, 1" neodymium tweeter2x 6.5" woofers, 3.5" midrange, 0.75" tweeter (coaxial mid/tweeter)
AppNoNo
EQNoYes (Room adjustment)
DSPNoNo
Output Power112W total550W total (250W bass, 150W mid, 150W treble)

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The Two Speakers In Full

JBL 308P MKII: $498 Bhphotovideo

JBL 308P MKII ranking card

Pros: CEA2034 spinorama shows an essentially flat on-axis response from 45Hz to above 15kHz, with almost no directivity error. Dual 56W Class D amps drive an 8” woofer and 1” tweeter with a smooth, imperceptible crossover transition. Excellent value at $498 per pair.

Cons: A resonance shows up around 18kHz and a slight dip around 1.4kHz. An electronic limiter creates measurable anomalies around 96dB, and maximum clean output tops out around 105dB SPL before heavy limiting kicks in. Some audible tweeter hiss at close range.

AppNo
Bass Extension (-10dB)60Hz (measured, Audio Science Review)
Bass Extension (-3dB)82Hz (measured, Audio Science Review)
DSPNo
Dimensions16.5"H x 10"W x 12.1"D (419.1 x 254 x 307.3 mm)
Drivers8" woofer, 1" neodymium tweeter
EQNo
Frequency Response45Hz - 20kHz (+/-3dB) (Manufacturer specified)
Output Power112W total
Weightnot published by manufacturer

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Genelec 8341A: $6590 Bhphotovideo

Genelec 8341A ranking card

Pros: CEA2034 spinorama shows an exceptionally flat on-axis response, within about +1.8dB/-2.2dB of the target curve, with excellent directivity control from the coaxial midrange/tweeter and dual 6.5” woofers. Tri-amplified design totals 550W across bass, mid, and treble sections.

Cons: The bass amplifier runs out of headroom well before the mid/treble sections, producing audible glitching/ticking distortion at higher volumes even at 1 meter - not well suited to larger rooms or higher playback levels as a result. No hard power switch, and it produces a loud static pop when AC power is cut. Very expensive at $6,590 per pair.

AppNo
Bass Extension (-10dB)40Hz (measured, Audio Science Review)
Bass Extension (-3dB)58Hz (measured, Audio Science Review)
DSPNo
Dimensionsnot published by manufacturer
Drivers2x 6.5" woofers, 3.5" midrange, 0.75" tweeter (coaxial mid/tweeter)
EQYes (Room adjustment)
Frequency Response338Hz - 37kHz (-6dB) (Manufacturer specified)
Output Power550W total (250W bass, 150W mid, 150W treble)
Weightnot published by manufacturer

As an eBay Partner, we may be compensated if you make a purchase.