IRS

Infinity IRS højttaler serien er absolut high-end.

Det startede med modellen fra 1980 der bare hed IRS, der stod for Infinity Reference System. Det er stadig et af de mest ultimative Hi-Fi højttalersystemer der nogensinde er lavet. Efterfølgende blev “IRS” en typebetegnelse for andre high-end modeller, alle mindre og (lidt) mere opnåelige end den originale IRS.


IRS 1980-1987.
IRS V 1988-1996

IRS V:
Drivers (per channel):
Woofers: Six 12” Polypropylene/Graphite
Midrange: 12 EMIMs
Tweeters: 24 EMIMs/front
12 EMITs/rear
Nominal Impedence: 4 Ohms
Finish: Brazilian Rosewood
Dimensions: (WxDxH)
Woofer module: 52.71 x 73.03 x 228.60cm
Mid/tweeter module: 119.38 x 43.18 x 228.60cm
Base footprint: 96.52 x 30.48cm
Weight: 1500 lbs (681.82kg)
Frequency Response: 15Hz to 45KHz ±2 dB
Crossover Frequencies: 70Hz (variable), 4500Hz
Mid/Tweeter Amplifier 100-500 watts/ch RMS
Bass Amplifier Requirements: 2 kilowatts/ch RMS (included)

De ultimative Hi-Fi højttalere..

Infinity_IRS_V_technical_sheet


IRS Beta 1987-1992.

Drivers (per channel):
Woofers: Four 12” Polypropylene/Graphite
Mid Bass: 2 L-EMIMs
Midrange: 1 EMIM
Tweeters: 1 EMIM/front, 1 EMIT/rear
Super-Tweeters: 1 SEMIT
Nominal Impedence: 4 Ohms
Finish: Santos pau ferro
Dimensions: (WxDxH)
Woofer module: 41.91 x 36.83 x 164.47cm
Mid/tweeter module: 43.18 x 2.54 x 164.47cm
Base footprint: 45.72 x 43.18cm
Weight: Woofer module: 140 lbs (63.64kg)
Mid/tweeter module: 75 lbs (34.09kg)
Frequency Response: 15Hz to 45KHz ±2 dB
Crossover Frequencies: 100Hz, 750Hz, 4500Hz,10kHz
Mid/Tweeter Amplifier 75-300 watts/ch RMS
Bass Amplifier Requirements: 150-500 watts/ch RM

Infinity_IRS_Beta_Technical_Sheet
Infinity_IRS_Beta_Manual-en
Infinity_IRS_Beta_Manual_DE
Infinity_IRS_Beta_Stereophile-review
Infinity_IRS_Beta_Hifi-News-review


IRS Gamma/Delta 1987-1992.

Drivers (per channel):
Woofers: Four 12” Polypropylene/Graphite
Mid Bass: 2 L-EMIMs
Midrange: 1 EMIM
Tweeters: 1 EMIM/front, 1 EMIT/rear
Super-Tweeters: 1 SEMIT
Nominal Impedence: 4 Ohms
Finish: Santos pau ferro
Dimensions: (WxDxH) Woofer module: 41.91 x 36.83 x 164.47cm
Mid/tweeter module: 43.18 x 2.54 x 164.47cm
Base footprint: 45.72 x 43.18cm
Weight: Woofer module: 140 lbs (63.64kg)
Mid/tweeter module: 75 lbs (34.09kg)
Frequency Response: 15Hz to 45KHz ±2 dB (Gamma)
Crossover Frequencies: 100Hz, 750Hz, 4500Hz,10kHz
Mid/Tweeter Amplifier 75-300 watts/ch RMS
Bass Amplifier Requirements: 150-500 watts/ch RMS

Gamma og Delta højttalerne er ens, men til Gamma var der en ekstern Servo Control enhed til styring af basenhederne. Gamma havde derfor dybere og kraftigere basgengivelse end Delta.

Infinity_IRS_Gamma-Delta_technical_sheet
Infinity_IRS_Gamma_Stereophile-review


IRS Epsilon 1995-1996.

12″ (305mm) woofer servo controlled
L-EMIM lower midrange
EMIM Midrange
2x EMIT-B tweeters
Frequency Response: 25Hz to 35kHz (+/- 1.5dB)
Recommended Amplifier: 150w minimum
Crossover Frequency: 150, 500, 3000Hz
Sensitivity: 86dB
Nominal Impedance: 4 ohms
Dimensions: (H)1498 x (W)457 x (D)381mm
Weight: 68 kg

Med ekstern Servo Control enhed til styring af basenheder.

Infinity_IRS_Epsilon_Service_Manual-schematics
Infinity_IRS_Epsilon_Stereophile-Review


IRS Sigma 1996-?

12″ (304mm) woofer
6.5″ (165mm) Midbass
EMIM Midrange
2x EMIT-B Tweeters
Frequency Response: 30Hz to 42kHz (+/- 2dB)
Recommended Amplifier: 100 to 500W
Crossover Frequency: 160, 600, 3800Hz
Sensitivity: 87dB @ 2.83V/1m
Nominal Impedance: 4 ohms
Dimensions: (H)1422 x (W)457 x (D)406mm
Weight: 88,6 kg

Infinity_IRS_Sigma_technical_sheet
Infinity_IRS_Sigma_Owners_Manual-White_Paper


IRS Omega 1998-?

12″ (305mm) Watkin’s woofer
6.5″ (165mm) Midbass
EMIM Midrange
EMIT & EMIT-R Tweeters
Frequency Response: 30Hz to 42kHz (+/- 2dB)
Recommended Amplifier: 100 to 500W
Crossover Frequency: 180, 900, 4000Hz
Sensitivity: 87dB @ 2.83V/1m
Nominal Impedance: 4 ohms
Dimensions: (H)1230 x (W)390 x (D)380mm
Weight: 55kg

Omega var den sidste og mindste i IRS serien. Det er en fin højttaler, men måske lidt en tilsnigelse af Harman at kalde den “IRS”, da den egentlig er en videreudvikling af Renaissance 90.

Infinity_IRS_Omega_Technical-data
Infinity_IRS_Omega_brochure
Infinity_IRS_Omega_Schematics


Comments are closed.

Social Media Auto Publish Powered By : XYZScripts.com