Description

This project started off as a religous experience hearing the IRS Beta's in the early '90's - the project has since transformed into a quest for the best of the best (IMHO) of gear from the same era as the Betas.

Upon hearing the Betas, knew at that point to get a good job to afford them. So off to Optical Sciences for 6 yrs - after all, the physics of light is similar to sound, just faster with different materials.

So, found a great set of Beta's in March of 2001. Put 'em in a closet thinking someday I can afford some gear to drive them. Yeah right. Bought a Citation 7.0 & 7.1 after a week. Put everything in the garage and music like I remembered was recreated. BTW, the 7.1 is a GREAT affordable amp for bi-amp requirements - a bit harsh on the highs with planars hovever.

Enter the Carver Silver Sevens in August 2001. Found them trolling audiogon on a late night. Too good of a price to pass up. So I then had the black beauties driving the planars with all 38 tubes and an electric bill to prove it. The Citation 7.1 was kept on for bass duties.

The Citation 7.0 pre-amp physically matches the 7.0 well and does a fine job at 2 channel stereo applications (although it's prime function is for home theatre in a pre-Dolby Digital world). The volume control is a push button thing - not a big knob which makes the interface of quiet to LOUD visceral. Enter the Adcom GFP 565 - great solid performer - with a knob.

While the Citation gear served me well, the big Silver 7's invoked an affinity for monoblocks. Since the Beta's like lots of power and I like loud music, juicy amps are required. Since the Adcom pre-amp works so well, the matching GFA-565 amps must make it better! And true, they did add a huge reserve that the 7.1 didn't quite have when the petal is to the metal. Gobs of clean power - they are a great find, especially considering their price.

After chatting with several high-end audio chums, a suggestion that the source (i.e. CD) may be the limiting factor with a high resolution system. Sold. Now just had to find a product. Big money can be spent in this arena with debatable results. Being educated in linear systems, Fourier transforms, and the like, give me lots of bits and over-sampling to increase resolution and reduce aliasing. No theory here, but the PT folks do a great job based on sound physics. Besides, interpolation between samples is required to take advantage of all those extra bits - a fact that is frequently forgotten. Bottom line, it is a non-trivial improvement you can hear.

Now the Adcom pre-amp only served a short duty since the very unfortunate addiction of high-end audio kicked into epedemic proportions. And so the the Audio Research SP-15 was found using audiogon's friendly pages yet again in June 2002. The 2 stage gain for volume control greatly reduces the noise floor - surprising how effective it is. The system at idle is nearly imperceptible - Wow.

Always had a dream of the big blue needles of a Mcintosh. Lusting for MC-1000 monoblocks has been around almost as long as the dream for the Beta's. Apparently everyone elso wants them since they are exceedingly rare on the used market. A thousand curses for not acting immediately (if not sooner) on the single ebay listing in years! Oh well.

A good friend and great structural analyst got married and had to give up his high-end audio habit for the sake of the marriage - she must be a keeper. A decent Sony turntable now rides next to the ARC SP-15 at the top of the pile. Picked up some very nice vinyl at the local goodwill store. At $1/record, I have no guilt shopping for resources intended for financially disadvantaged persons. Upon reflection, I AM financially disadvantaged (now I'm feeling good about myself...). Still need to get a needle and cartridge however. Really want to find out what all that analog vs. digital purist discussions are about.... Thanks again Mike.

Time to satisify the endless hunger of audiophifdom elseways since it has been over half a year from my last fix. The spirit of the radio still lingers in a world of digital audio. A tremendous number of songs of jazz and classical (with very few commericials) awaits the listener over the friendly airwaves. And what better way to bring them in than with a Mcintosh MR-78?

Curses! The same week financial resources were tapped for a tuner, the beloved big Mac's became available. Since all I can do is think about big blue meters with silky sounds dancing in my head, I know need to get them so that my employer doesn't notice my lack of productivity. Time to visit the bank again and push my home purchase on the beach out another decade.

That brings us up to date on my plunge into the deep end. Hope to write again when my next audio acquisition is a big house specifically designed for acoustic neutrality. With a view of the ocean. And a place to put the wine.
Read more...

Components Toggle details

    • Infinity IRS BETA
    system
    • Carver Silver 7 mkII
    375w x 1, tube monoblocks
    • McIntosh MC-1000
    1000w x 1, bal in
    • Audio Research SP-15
    tube, 2 chassis
    • McIntosh MR-78
    27 lbs
    • Harman Kardon FL-8370
    5 disc
    • Perpetual Technologies P-1a
    16-24 bit,. 96 Khz, 6 lbs
    • Perpetual Technologies P-3a
    16-24 bit, rca output, 4 lbs

Comments 13

A dream system....happy happy listening.

glenfihi

Hello

Please send me en email with your e-mail. i am too e mc 1000 / irs beta. fan.
contact me under [email protected]

thanxs

best regards
georg

gmatter

Congratulations! Never thought the silver seven was a real product. Just a mirage for its" "t" function amps. Talk about old school. I remeber the bottom fell out at infinity just about when the betas were ready to fly. You own a gret peice of audi history. Hold on tight

gregadd

Hi Rjp,

Very impressive indeed. I actually just got myself a 2nd hand ARC SP15 pre-amp, wonderful piece of equipment. I also own a MC7150 power amp.

Btw, do you by any chance has a copy of teh SP15 owner/user manual as I couldn't find it anywhere. If yes, would you be able to scan it electronically or send me a copy of it (I will pay for all cost).

Thank you very much.

ple email me at : [email protected]

Ray

koalaray

I`m in love with the Infinity classics...i currently own the Kappa 9. Driven by the sphinx project twelve monoamps wouw those calssic are the best indeed when i first heard them...The betas however are sweeeet as pie! the irs-v...is not possible to own..nobody sells them the sound to good i guess:-]

Besides i don`t have the cash for it.. a very nice review. All the reviews are spectacular btw! I don`t have the money to affort such gear :-[ But i have my own system that sound superb..and thats what matters! Very good to see people writing like this!

Greetz from the netherlands

M.linschoten [a infinity classic lover!]

[email protected]

It is great to see people put the effort into getting Infinity IRS Betas to sing. Congratulations, from another Beta owner.

valvesandvinyl

wow, you most definetly have one of the coolest looking rigs ive ever seen.

mike.

bigjoe

Owner
Your system must sound pretty nice. What do you use for sources? The Carvers are a wonderful tube - LOTS of power, huge dynamics,...so on and so forth. They are exceedingly rare however. A few semi-reliable sources indicate they only made 60 or so. I have only seen 2 sets ever offered - one on Audioclassics several years ago, and one set here on Audiogon (which I picked up).

I have powered the Beta's using the Citation 7.1 for all channels, the MC-1000's on the planars and Adcom GFA565 on the bass, Marantz Model 2 mono tube amps on the planars and Adcoms, but like my stock configuration of CSS on the planars and MC-1000's on the bass. The Beta's were designed tubes driving the planars and solid state driving the bass and definitely sound best driving that way.

If you haven't been here, its a good reference site. http://oellerer.net/infinity_classics/

rjp

I am pleased to see a system with many similar components to my system. I also have IRS Beta's (as well as IRS V's that I do not presently use), and an AR SP-15 pre-amp. I drive the system with Cello performance amps and Krell MDA300's. I have always wondered what the system would sound like with tube amps like the Carver Silver Sevens.

Have you ever hooked up any amps other than the tubes, and what was your experience? Do you know of any source for the Carvers? They don't seem to appear often for sale.

hirschent

I love to hear when a man or women make such posts. It is obvious you are getting much enjoyment from your system. This is what it is all about. I bet you $20 that you will be the proud owner of those Mcintosh MC-1000 with those big blue needles within six months. Besides, what could look better sitting besides your great Mcintosh MR-78.
love these happy posts. Makes my day start off as a happy one. Ya gonna take me up on that bet? I made a killing on the so called Superbowl. I feel another easy $20 bucks coming my way.
Congratulations on your fine system, and obviously a very happy person.

brulee

Owner
System edited:

rjp

Owner
System edited:

rjp

Hi Rjp! Glad to see another Beta-man among us. I love these speakers and intend to create an astonishing system by matching every component to achieve the (near) ultimate in coherency between woofer & midrange/tweeter panels.

lhegie

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