Specs on those JBL
Product highlights:
ideal for use in a custom-installed home theater or in-wall stereo music system
installs horizontally as a center channel, or vertically as a left- or right-channel speaker
dual 8" PolyPlas woofers for crisp bass and articulate midrange
two-position level control cuts low-frequency output to best match your room's acoustics
1" horn-loaded high-frequency compression driver
HDI (High Definition Imaging) waveguide technology for smooth, uniform response across a wide listening area
three-position level control cuts or boosts high-frequency output
frequency response: 43-20,000 Hz
recommended amplifier power: 50-175 watts RMS
nominal impedance: 6 ohms
sensitivity: 96 dB
includes paintable, zero-bezel magnetic grille
Dimensions and warranty:
cutout dimensions: 8-3/4"W x 20-7/16"H
overall dimensions: 9-15/16"W x 21-9/16"H
mounting depth: 3-3/4"
warranty: 5 years
60-day returns
MFR # JBLS688LCR
Item # 109S688LCR
They are easy to drive and they are very sensitive at 96db if that is measured accurately if it is that is a huge plus
They can get loud without a ton of power which would be a huge benefit for you at your seating distance and they would only cost you $1600. You could get a third one for a center channel under your TV for $2400 for all 3 if you could run it horizontal under your TV if it fit your studs if not the free stander studio 6 center would work and cost you less
Center channel speaker
www.crutchfield.com
Wow they have a scratch and dent one for $379!!!