Ground Zero ULTRA M-80

GENERAL SPECIFICATIONS:



Speaker type 80 mm / 3.15” SQ midrange speaker

Nominal impedance 4 ohms

Frequency Response 150 Hz – 15 kHz

Basket type Multipiece machined aluminum

Cone material High-Tech Kevlar®

Motor High-grade Neodymium

Voice coil diameter 20 mm / 0.79”

Max. excursion (p2p)- Xmax 7 mm / 0.28“

Power handling (RMS) 70 Watts

Power handling (max) 110 Watts

Outer diameter 93,8 mm / 3.69”

Mounting diameter 76,5 mm / 3.01”

Mounting depth 42 mm / 1.65”



PARAMETERS:



Resonance frequency - fs 127 Hz

Efficiency - SPL 88 dB

DC voice coil resistance - Re 3.5 ohms

Driver´s Q (nonelectrical losses only) - Qms 6.76

Driver´s Q (at fs) - Qes 0.43

Total driver´s Q - Qts 0.40

Air vol. compliant to driver´s suspension - Vas 0.9 L

Moving mass incl. acoustic load - Mms 3.15 g

Product of magnetic flux density - BL 4.52 N/A

Mech. resistance of driver´s suspension - Rms 0.37 kg/s

Compliance of driver´s suspension - Cms 0.50 mm/N

Voice coil inductance - LE 0.04 mH



FEATURES:



Ultra-high-end 80 mm / 3.15” midrange speaker

Tightly tolerated technical parameters

High-Tech Kevlar® cone

Linear moving NBR surround

High-grade neodymium motor with copper cup

Vented voice coil former reducing distortion

Round CCAW wire voice coil increasing highest efficiency

Fine-blasted, black anodized GZ-design basket from machined aluminum parts

Optimized motor and voice coil ventilation

Airflow-optimized aluminum cast spokes

Gold plated terminals

Documented final technical inspection

Wooden box packaging / in matching pairs

NRG protection grills with aluminum ring