Infinity Irs Beta

Back in the day, Infinity made a series of high-end speakers called The Infinity Reference Standard, (IRS) series.

These include:

The IRS
The IRS Beta
The IRS Delta
The IRS Gamma
The IRS Epsilon
The IRS Omega
The IRS Sigma

So really, the name the OP uses is correct. I was an Infinity dealer for many years and even sold a few of each of the above, except for the IRS.

Out of the hundreds and hundreds and hundreds of speakers that I have personally owned, the Beta's are still the one speaker I wish I never had sold. Still one of the best speaker systems ever made....IMHO.

I used to own them...Awesome speakers! And I mean great!! The bad news is they might sound fine now,but will definitely sound better with a good(relatively powerful) tube amp on the panels....I ran top quality Audio research units on mine.You definitely want solid state on those bass towers though.that's where the Krells should go,which is what I was using on mine....Good luck.

I read somewhere that when Infinity was designing the IRS series speakers they used audio research tube amps on top, I have the IRS Epsilons... they are awesome speakers that sound very similar to the IRS Beta's aside from the bass output, congrats on your recent purchase.

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Betas are excellent speakers when they are good... but sometimes they show their age. They're around 25 years old. The bass modules and servo could use a 21st century update.
Next to impossible to find parts for the tweeter,midrange panels.
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Isn't the "IRS" also known as the IRS V (5)?
While attending technical school (around 1983) I joined a group of EE's for a tour of the WFMT studios in downtown Chicago. WFMT had a recording studio/hall with a pair of the gigantic IRS modules 10-15 feet up on the walls.
BTW, we asked the head engineer where he attended school.
His reply: "Self taught". -Mind Blowing!