ESC
Reference Standard 2.5

Reference Standard 2.5

BrandInfinity
DesignerArnie Nudell
FunctionSpeaker
Produced1979-1982
CountryUnited States
Model IDRS-2.5
Form FactorFloorstanding
Signal PathPassive Hardware
Dimensions45.7 × 129.5 × 27.9 cm (W × H × D)
Weight117lbs
Frequency Response30Hz-32kHz ±3dB
Tweeter (Front)EMIT* (PN 902-2252)
Tweeter (Rear)EMIT* (PN 902-2252)
MidrangeEMIM** (x2) (PN 902-0012)
Bass12" Infinity-Watkins Dual-Drive Polypropylene Cone Woofer (PN 902-1180)
Impedance4Ω
Crossover Points300Hz, 5kHz (300Hz Adjustable with Optional Electronic Crossover Control)
Dispersion (20kHz)-2dB @ 60°
Recommended Amplifier Power100-300W
FinishOak
MSRP$2,300
Connections
  • Input · Banana
Controls
  • Tweeter Level · Rotary Switch · 3 Steps
  • Midrange Level · Rotary Pot
  • Crossover Point · Toggle Switch
Notes*EMIT (ElectroMagnetic Induction Tweeter) **EMIM (ElectroMagnetic Induction Midrange)