Infinity IRS Gamma

High End Drivers

L-EMIM Bass Driver

The IRS Gamma Servo Control Amplifier

The Servo opened up.

Introduced: 1987 (slight changes 1988/89)
Dimensions:  160 x 56 x 36 cm
Wight: 63 kg
Bass: 2 x 30 cm
Mids: 1 x L-EMIM, 1 x EMIM
Highs: 2 x EMIT, 1 x SEMIT
Suggested for amplifiers with: 75-400 Watts per channel
Frequency range IRS Gamma: 15 Hz - 45 kHz
Frequency range IRS Delta: 28 Hz - 45 kHz
Crossover frequencies: 130 Hz, 750 Hz, 4500 Hz, 10 kHz
The IRS Gamma had a special Servo control unit for bass drivers.
The Deltas were the same speaker without the Servo control.

You can download the Infinity IRS Gamma/Delta manual HERE.

The technical sheet/schematics of the crossovers, 
and the Servo unit can be seen HERE.


Servo Woofer Problem

I will be reviewing these speakers soon.
I am having the woofers worked on by Watkins Woofer right now.
I have also sent out the servo unit for service.

I will be powering them with a pair of Adcom GFA-555 Power Amplifiers.

Click Here to read more about the Adcom GFA-555 Amplifier

One word to Harman Audio:

Please start making the 12 inch Servo Woofers again for the
IRS series of speakers.
Many of us still have these speakers and are trying to restore them.
After 20 years these drivers do deteriorate.
Without those woofers the speakers don't sound nearly as good.
 

Many of us would gladly pay the price for new drivers if you had them.
There's a LOT more older Infinity aficionados out there than you realize!

 

 

Infinity IRS Gamma review










 

Infinity Models & Links

Servo Static 1
Qe
Qa
Qb
Quantum Jr.
Q5
Quantum 2
Quantum Line Source
InfiniTesimal
Reference Standard B
 Reference Studio Monitor
 Reference Standard 1.5
 Reference Standard 2.5
 EMIT tweeters &
EMIN Midranges
Vintage Infinity 
Owners Manual
Vintage Infinity 
Speakers For Sale
Vintage Infinity Home

Many people have been emailing me asking to buy-sell speakers or parts. I honestly don't know where to do any of this.
I suggest if you want to buy, sell, or trade Infinity speakers or parts, sign the guestbook, and put your advertisment in there. You may use this forum to chat amongst yourselves. thanks, Shred
 
 

Sign The Infinity Guestbook

View The Infinity Guestbook

My Personal Music Links
 What's a great stereo without some rippin' music?

BobbyShred's Music & More - Links to great old bands.

BobbyShred's Concert DVD Video Trading Page - Rare Music videos.

BobbyShred's CD Trading Page


BobbyShred@aol.com