The  Greenback G10 8 ohm speaker was developed to recapture the legendary  sound of Celestion's 1970s 10s - a 10" speaker with a surprisingly meaty  tone.
Celestion G10 Greenback 10" 8 Ohm Guitar Speaker 30W
The 10" that thinks it's a 12". Low in output but with the   weighty  low-end balance of a 12", the G10 Greenback features a complex,   creamy  mid-range and smooth, vintage top-end. In small combos this   speaker  adds real class, and when combined in a 4x10 gives rise to a   raunchy,  full-bodied tone, rich in low-end thump.
By performing extensive listening tests with 10" Celestion ceramic    drivers from the late 60s onwards, as well as drawing on the experience    gained from the development of the original G12M Greenback, Celestion    design engineers have created a speaker that remains faithful to the    sonic spirit of the Greenback family. It has the same warmbodied    character and delivers tone like the distinctive 'sports-car growl' that    is the trademark of the original 12" G12M 'Greenback'.
Featuring a new eight hole chassis that's more versatile for    upgrades, the new G10 has been built with its own green can, which    should leave no-one in any doubt of this remarkable speaker's family    history. The G10 Greenback truly is a contemporary speaker with a    vintage pedigree.
"The new  Celestion 10" Greenback is hands down the best 10 I've ever   heard," Phil  Jamison Head of Production for Matchless Amplifiers.
Overall Specifications: • Nominal diameter: 10"         (254   mm) • Power rating: 30 watts • Nominal impedance: 8 ohm •           Sensitivity: 95 dB • Chassis type: Pressed steel • Voice coil   diameter:         1.75" (44.5 mm) • Voice coil material: Round copper •   Magnet   type:      Ceramic • Frequency range: 95-5,500 Hz • Fs: 98 Hz •   DC   resistance,   Re: 6.41 ohm.
Mounting Information:     •       Diameter: 10" (254 mm) • Overall depth: 4" (102 mm) •     Magnet       structure diameter: 4.9" (124 mm) • Cut-out diameter: 9"     (229 mm) •       Mounting slot dimensions: 0.25" x 0.43" (6.5 x 11 mm  Ø) • Number    of mounting    slots: 8   • Mounting slot PCD: 9.6" (245  mm) •   Weight: 3.5 lbs. (1.6   kg).