Embossed Gately Audio Carbon fiber dustcap with paper cone stitched to a high roll surround. 

Black powder-coated GATELY engineered basket 

Dual Progressive nomex spiders with stitched flat wound tinsel leads connect to oversized push terminals. 

Alpha 6.5” use a 2” 4 layer high temp copper wound while the 8” Alpha subwoofers use a 2.5” voice coil of the same quality. 

Alpha 6.5” have a motor structure that consists of a 2 layer Y35 ferrite magnet that measures 5.5” in diameter by 0.79” thick per slug. 

For dimensions, see product specifications in images.

Cutout Diameter 5.91"
Mounting Depth 4.72"
Weight : 14 lbs

Model: Alpha 6.5 D2
f(s) = 54.77 Hz
Q(ts) = 0.5131
V(as) = 2.159 liters (0.07625 cubic feet)
SPL = 79.78 dB SPL 1W/1m
Nominal Diam. = 0 mm (6.5 in.)
R(e) = 4.228 Ohms
Q(es) = 0.5774
Piston Diam. = 130.2 mm (5.125 in.)
SPL = 82.55 dB SPL 2.83 Vrms
C(ms) = 8.7e-05 mm/N
Z(max) = 37.97 Ohms
L(e) = 3.875 mH at 1kHz
Q(ms) = 4.609
BL = 15.66
n(0) = 0.0586 %
M(ms) = 97.26 grams

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Model: Alpha 6.5 D3
f(s) = 59.12 Hz
Q(ts) = 0.5681
V(as) = 2.05 liters (0.07238 cubic feet)
SPL = 80.12 dB SPL 1W/1m
Nominal Diam. = 0 mm (6.5 in.)
R(e) = 6.177 Ohms
Q(es) = 0.6364
Piston Diam. = 130.2 mm (5.125 in.)
SPL = 81.25 dB SPL 2.83 Vrms
C(ms) = 8.2e-05 mm/N
Z(max) = 57.54 Ohms
L(e) = 4.982 mH at 1kHz
Q(ms) = 5.292
BL = 17.81
n(0) = 0.06343 %
M(ms) = 87.97 grams

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Model: Alpha 6.5 D4
f(s) = 66.05 Hz
Q(ts) = 0.6773
V(as) = 1.88 liters (0.06638 cubic feet)
SPL = 80.32 dB SPL 1W/1m
Nominal Diam. = 0 mm (6.5 in.)
R(e) = 9.014 Ohms
Q(es) = 0.7775
Piston Diam. = 130.2 mm (5.125 in.)
SPL = 79.8 dB SPL 2.83 Vrms
C(ms) = 7.6e-05 mm/N
Z(max) = 69.94 Ohms
L(e) = 5.665 mH at 1kHz
Q(ms) = 5.255
BL = 19.23
n(0) = 0.06641 %
M(ms) = 76.84 grams