Here is the datasheet of DG-802 which use mixed white paper cone and IIR rubber surroudings, as following

Product parameters:

Size: 8 inch lIR rubber edge HIFI full frequency horn

Dc resistance :6.5 OHms/rated impedance 8 OHMs

Sensitivity: 93.1 dB

Rated power :30W

Maximum power :60W

Quality factor :0.46

Equivalent volume :48.5L

Paper basin material: llR rubber edge mica carbon fiber basin

Basin frame material: aluminum basin frame

Magnetic circuit structure: Y35 aerospace magnetic, symmetrical magnetic circuit structure with short circuit ring

Here is the datasheet of DG-801 which use real leather suspension and high quality mixed paper pulp cone, as following

1: outer diameter 220. Recommended opening 221 sink 6

2: Installation diameter 209

3: Holes 184 to 186 are recommended

4: recommended box volume 45 liters or above box volume large low frequency more loose

5: Rated power 20W/ maximum power 40W

6: DC resistance 6.5ohm

7: resonance frequency 45Hz

8: Sensitivity 94.5DB

9: Frequency range :45~18.5KHZ