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The JBL ES90 is a 4-way floor-standing loudspeaker that sports dual 8” proprietary PolyPlas shielded low-frequency subwoofers.

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Pros

good range, can go very deep and very high

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ideal for use as mains in a 5.1 setup

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legs don't take up much room but are very stable

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legs prevent vibration, work great on a hardwood floor

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enough loudness for a medium to large sized room

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Cons

newer tweeters lack the definition seen in older JBL L60Ts

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midrange is too strong if used as stand-alone loudspeakers without bookshelfs or woofer support

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The JBL ES90 is a 4-way floor-standing loudspeaker that sports dual 8” proprietary PolyPlas shielded low-frequency subwoofers, a 4” PolyPlas shielded midrange, and one ¾” titanium-laminate tweeter mounted In Elliptical Oblate Spheriodal waveguides for improved high-frequency dispersion anywhere in the room. The second floor-standing speaker in the JBL ES series, the JBL ES90 is a cousin to the dual 6” ES80. Although the JBL ES90 has larger subwoofers (8” versus 6”), the down-size is that it offers a more narrow frequency range (36Hz-20kHz versus 45Hz-40kHz). It should be noted though that its lower frequency and improved sensitivity (91dB versus 90dB) does provide more ground-shaking bass, but inferior treble. In addition, the JBL ES90 comes equipped with a bass-reflex port for extended bass responses, EOS waveguides that evenly disperse high frequencies to deliver a more accurate imaging, a straight-line signal path crossover network that preserves clarity and detail, and cellulose-fiber cones reinforced with a Polmer coating for a “uniform pistonic motion” and results in no internal resonance and a more precise base. The JBL ES90 also features a super-elegant cabinet design with a slender profile built from a wood-like and textured high-quality vinyl. The JBL ES90 is priced at $299.99, the exact same price as the JBL ES80. Deciding between the two requires choosing which is important: greater bass or more accurate treble.

Features
  • Frequency Response: 36Hz – 20kHz (–6dB)   
  • Maximum Recommended Amplifier Power: 225 Watts
  • Power Handling (Continuous/Peak): 110 Watts/440 Watts
  • Nominal Impedance: 8 Ohms
  • Sensitivity (2.83V/1m): 91dB
  • Crossover Frequencies: 500Hz, 3000Hz – 24dB/octave; 12000Hz – 18dB/octave
  • Low-Frequency Transducers: Dual 8” (200mm) PolyPlas; shielded
  • High-Frequency Transducer: 3/4" (19mm) Titanium-laminate dome, shielded, EOS
  • Midrange Transducer: 4” (100mm) PolyPlas, shielded waveguide
  • Dimensions (H x W x D): 42-11/16" x 10-1/4" x 15-1/8"
  • Weight : 53.4 lb (24.2kg)
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