Stuff I Like From Bygone Days

There are some benefits to the continual march of technology.

I remember moving from one shanty to another and carrying those containers full of vinyl LP records and the heavy audio equipment.

That Sansui QRX-9001 felt as if it weighed around 200 pounds!!! The weight and the fear of dropping my beloved audio outputter was off-putting, as those whacky but beloved Brits say.

I sadly sold my once-perfect but became un-perfect 9001 receiver a few years ago and the owner’s manual went with it.

Searching the Web I found a reported weight of fifty pounds for the unit but my rapidly declining memory nudges me that its weight was in the 60 pound range.

I have no idea what the weight is in furlongs, stone or hogsheads.

Anyway, compared to the receiver/amps of today that weigh little in comparison I do not miss having to move the hardware or the software of long ago.

Even a decrepit Old Coot such as I can carry a bunch of music embedded in those fancy CD things.

And my current minimalistic stereo stuff (no quad left in my humble hovel) is very light and easily carried.

Even the speakers found at the thrift store for several hundred dollars less than what they cost new weigh only a few easily-carried pounds each.

There ARE many benefits to today’s modern audio stuff but I sure miss the appearance of the stuff I lusted for back in the 1970s.

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Hello to Visitors

Welcome!!!!  Glad you found the place.  Quad is groovy. This is the “sticky” page that should always appear first.

I will start with an index to the many separate blog entries that comprise the “whole” that makes up this one-among-many sites covering quad / quadraphonic / quadrasonic / 4-channel audio etc.

The index below follows the format the blog is based upon; the newest entries appear first and the oldest appear at the end of the index as they do with this blog format.


January 24, 2018. A new addition to this blog. folks. Look at the top of the page at the header under the title banner and you see “Quad Videos.” Clicking the link opens that page. It is easy to return to this main part of the site; it is but one click away. You fine folks can figure out the details yourself. Once at the new page poke around… I will be adding more video content as I find it. Have fun!!!


Involve Audio Surround Master

Deported Radio

Vintage Stereo Restorations

A new-found joy of the 8-track


Peeking at the Past

Stuff I Like From Bygone Days

Q Surround


Quad’s Early Days


QS aka RM


More CD-4

Assorted Stuff


Rare Stuff

Quad 8-track tape Q8s

Stuff and Stuff

Various Stuff

Cai Campbell

Tom Fornof Handy Info


Several Pages of Quad Bob

Quad Bob

Quad Bob

Quad Jukeboxes

SRS Circle Surround

Several Posts with Steve Wudtke Info

Wudtke Wit & Wisdom

Wudtke Wit & Wisdom

Wudtke Wit & Wisdom

Wudtke Wit & Wisdom

Wudtke Wit & Wisdom

WordPress allows its blog users to view where blog visitors are visiting from.

This is done by the country of origin but no more than that.

Here are where some of our visitors originate:

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Q Surround

QSound is a global supplier of audio software technology for mobile devices, headphones, Bluetooth devices, televisions, stereo PC multimedia equipment and other consumer electronics. QSound’s proprietary audio algorithms truly deliver a fuller, more natural and immersive audio experience – users hear the difference!!

Q-Sound home page—-> Here

“QSound 3D Positional Audio Demos “–> Here


There are other new and not-so-new devices, softwares, units with those circuits or programs and this and that an et cetera or two or more.

I encourage those in the know to leave a comment about those newer and really new ways and means to improve an audio field or sound or presence or whatever.

This blog is aimed at audio.

It doesn’t matter if the audio is meant to be video-related.

I would prefer if the audio devices mentioned allowed music from any source to be played; from FM radio to a receiver’s output with sources varying from 8-track or reel-to-reel or cassette decks.

Or from CD or DVD players or, if you are using vinyl– from turntables.

As with muscle car 1/4-mile racing; run whatcha’ brung.

Okay… share your opinion and/or knowledge.



This site exists to assist with hopefully enlightening the curious to the short-lived era of Quad, quadraphonic surround sound from a time before the immense expansion of home theater.

Quad was geared towards home audio, for music listening.

It was a different era as those of us around and aware way back then are well-aware of.

Generally, folks viewed music and audio equipment differently in those days.

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Quad’s Early Days

Quad hit the marketplace in a big way in 1971. Vanguard Records was one of the early players with their 4-channel reel-to-reel tape. Articles in various magazines from the period of around 1969 to 1970 mention quad sound from reel-to-reel tape. Quad from vinyl records and FM broadcasts is mentioned as being possible in the future.

Quad on tape is usually a discrete-type quad. True discrete quad uses 4 individual audio sources from input to output.

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(updated March 2014. scroll to bottom for new addition to this post)

SQ was created by the CBS Technology Center and was made available to the public in April 1971. Rear channel information was placed on a vinyl record by adding “…double helical groove modulations… alongside . . .vectored modulations…” that produced the sound for the front channels. The SQ decoder sensed the different signals and did its best to send the appropriate sound to the correct speaker.

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QS aka RM


Sansui introduced the QS quad encode/decode system in February 1972. Similar to SQ and EV-4, QS can decode any matrix-type quad encoded record along with synthesizing quad from a stereo source. Often, QS is shown on quad equipment with the designation “RM.” This stands for Regular Matrix. Supposedly, RM is the QS type without logic in the decoder.

I think Sansui’s grooviest invention was the famous Vario-Matrix circuitry. Various audio magazines described this circuitry in a most confusing manner. Some described Vario-Matrix as a “logic circuit” that improves channel separation. Another writer said it was specifically designed to synthesize a stereo source into a quadraphonic output. Whatever it was intended to do, it sure does sound good. Almost everything I play; FM, Compact Discs, records, whether it’s a quad or stereo version, is passed through my Vario-Matrix circuitry. Stereo sounds dull, lifeless, and boring compared to the sound of my quad receiver pumping out the tunes through its Vario-Matrix decoder.

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