A dvd player equipped with a builtin dolby digital or dts decoder connected to a home theater multichannel amplifier or. Cbs was a major manufacturer of vinyl records at the time, and many of these were offered with sq encoding. That was back in the 1970s, a different era in many. If i look at the amount of software available, ultrahd and br would far exceed what sq sound there is. I have not had the equipment to decode them for playback for many, many years. The sq w is considered the best sq quadraphonic decoder ever produced, second only to the tatefosgate. Simulate hardware stereo to quadraphonic audio encoding welcome to doom9s forum. Cd4 quadradisc has the 4th largest discography of commercial quad systems after. It was sonys topoftheline quadraphonic receiver and includes a fulllogic sq decoder, along with a regular matrix decoder for sansui qs recordings and to derive 4channels from stereo recordings. Among the commercially available sq decoder, those closest work with selfmade machine i think also a crosstalk cancellation system fosgate tate ii 101a. Jim fosgate developed the tate ii 101 sq decoder, which produced a very. Laserdisc database view topic quadraphonic audio 4. The unlikely return of quadraphonic vinyl pro sound news.
Some systems used a demodulator to decode discrete sound channels. Different approaches were used to bring out that neato matrix quad sound. Sq quadraphonic decoder now working 2 channel hifi wigwam. Decent sounding fulllogic sq decoders were hard to come by in quads hayday, let alone now. I made crosstalk cancel type full logic qs sq matrix decoder. The mc12p, mc14p, and mc15p are integrated circuits that provide a complete chipset solution for decoding quadraphonic records encoded on the sq system developed by the columbia broadcasting system cbs. In testing, the only mentionable item would be when the sq decoder button is in, when a standard recording is used for source, the effect is wavering wow wow wow sort of. That is a tough choice for me as i do like quad sound.
The alltime best sq decoder was the tate 101a, which was codesigned by jim fosgate. I had heard that you can play quad sq records on your turntable, and a modern surround sound amp can decode the discrete signals as if your playing it through a vintage quadraphonic amp. Is the world ready for the return of quadraphonic vinyl records. A how to guide in encoding your own matrix quad mixes. Learn about vintage quadraphonic record collecting. Further, there was no standard quad format, just a lot of confusing brands. This model supports both discreet for 4 track sources and sq quadraphonic for vinyl, with sq. I have a collection of the old quadraphonic records. Sansuis qs decoders also had good stereotoquad capabilities, wrapping the lr. May 14, 2017 i made crosstalk cancel type full logic qs sq matrix decoder. Quadraphonic suffered from a format war the likes of which has never been encountered since with a myriad of competing formats and devices such as reeltoreel, 8track and vinyl. Dec 31, 2017 quadraphonic circuits, schematics or diagrams. Jan 08, 2014 on and off, ive been building a sq quadraphonic decoder to the recommended cbs level 2a design dating from 1973. The decoder takes a pair of composite signals stereo and separates them out into four channels.
Cd4 decoders are becoming more and more expensive and hard to find. It is a better match for all three matrix systems than that of the electrovoice universal decoder. I want to understand the claim of an artist and the creator by revitalizing a original sound in hifi as much as possible. Stephan hottos decoder does sq, qs, ev stereo4 and dynaquad. It was a commercial failure due to many technical problems and format incompatibilities. The best results i achieved by using audiomulch and a handful of freeware plugins.
There are instructions in discussion forums how to build quad decoding into. Stereo lab now supports software decoding of cd4 quadraphonic lps. Feb 27, 2016 if you want to transfer them to true quad playback dvds or wav files, you can use a great little free quadraphonic for those records encoded with the sq matrix process decoder available here. Playing quadraphonic records question steve hoffman.
So, according to you, i would have to give up quad sound in order to upgrade to hdmi, dolby atmos 3d and dts. In fact, they developed their own system, sq stereo quadraphonic, that encoded a 4 channel audio signal into a normal stereo signal, and in 1972 began selling these quadraphonic albums which could also be played on a normal stereo turntable and system without special cartridges or turntables. When i set my speakers to quadraphonic, i get no sound output to the rear left and rear right speakers. On and off, ive been building a sq quadraphonic decoder to the recommended cbs level 2a design dating from 1973. Surely this would be easier to reproduce in software like most dolby decoders are now. Here it is, sansuis historymaking 4channel synthesizer decoder qs1, the ingenious yet inexpensive instrument that magically transforms two channel stereo signals into a breathtakingly live sound field. Decoding sqqs matrix quadraphonic lps with your pc. Quadraphonic audio was the earliest consumer product in surround sound and thousands of quadraphonic. Yesterday, when i was writing about the aborted attempt of the music industry to put some kind of copyprotection system into vinyl, i mentioned in passing an old friend of the family, who had hoped that his decoder gizmo to bypass the system would make him rich. Playing sqencoded 4 channel lps through modern equipment.
Unfortunately quad died around the same time that the decoders began to get somewhat good. Quadraphonic record decoding question sources analog. A later enhancement was incorporated which implemented a channel blend in which rearchannel separation was traded for better frontback separation. Sony sqd2020 sq decoder for partsrepair please read. Quadraphonic sound was a matrix 4channel quadraphonic sound system for phonograph. Quadraphonic vinyl records for sale at discogs marketplace. The following report was sent to me from a fellow quadraphile on aol thanks serge.
We make every effort to link to original material posted by the designer. Playing quadraphonic records question steve hoffman music. Socalled logic circuits added a lot of additional circuitry to the decoder the encoder. Quadraphonic is the forgotten surround sound system. Handmade sq three band full logic quadraphonic decoder. The sansui variomatrix qs decoders were known to be very good,and lafayette made a decent sq decoder, i am told, though i have never heard one. I actually have the plans on a diy cd4, qs, sq all in one decoder i plan to. Even the partiallogic units, which most were in 1972, were very expensive at the time. It was created by cai campbell by playing the stereo cd through a sansui qs1 decoder. Quadraphonic sound uses four channels in which speakers are positioned at all four corners of the listening space. When i quit drinking 5 years ago i found quadraphonic or it found me and i have not looked back. Seems the only major to adopt qs was abc records with their command quadraphonic label discs, and some of the. Qs or rmreal matrix as it was eventually called was technically the better of the 2 systems and was actually the first to market, but despite being freely licenced, was pretty much ignored by the mainstrean music industry. The consumer quadraphonic craze started with the introduction of the sq system by the cbs technology center in early 1971.
This model supports both discreet for 4 track sources and sq quadraphonic for vinyl, with sq being one of the most available media formats. I also want to be able to record the quadraphonic records i decode with. Jun 07, 2014 using dolby prologic settings for quadraphonic. Hi karl i tested the two software decoders that i could find in the web a couple of years ago.
Again it depended on the program material, and that kind with a minimal amount of. Dolby surround was based on the tate des itself an evolution of the cbs sq decoder. Many recordings using this technology were released on lp during the 1970s. Playing sq encoded 4 channel lps through modern equipment. Vintage sony sqr8750 quadraphonic receiver with full. I know of an old analogue decoder called tate ii in hardware, but they are expensive and very old now. Quadraphonic definition of quadraphonic by the free dictionary. Vintage sony sqr8750 quadraphonic receiver with fulllogic. Adobe audition is currently the only nonprotools music editing program featuring a. Here is a list of several thoughts and ideas i had and things i did when i was experimenting with quadraphonics. Incidentally, their decoder can also do sq and qs plus a bunch of other. Im assuming its sq matrixed because it does play in regular stereo. I know there is no market for it, but its too bad no one has built a universal quad decoder using dsp technology.
I originally came up with a very complicated way of making an sq compatible recording using sound forge and the qtools plugin. Sony sqd2020 sq decoder for partsrepair please read for. Youre obviously never going to match the output of an expensive piece of hardware with a free software. Id rate it as 710 cosmetically, due to some very minor imperfections, and say its highly collectible. Vintage sony sqr8750 quadraphonic receiver with fulllogic sq decoder photo. Right red led group are displayed the results of detection of the sound source direction of s. The higher quality sq and qs decoders are quite expensive and are outdone by software. Quadraphonic sound equivalent to what is now called 4. He remembers in the 70s certain fm stations would broadcast in quadraphonic on sunday nights only. Sony sqa200 manual stereo quadraphonic sound decoder. If i find a quad lp in thrift store bin i never pass it up, as these records are rare and typically in very playable condition, as your typical quadraphonic buyer was an audiophile, and usually took great care of their vinyl. The first preamp with a sq decoder was the pioneer qc800a.
Sansui qs1 manual four channel synthesizer decoder. It would be really cool to have sq, qs, cd4, etc all in one modern box or better yet, built into multichannel receiver. We have searched the web to help you find quick design ideas. Aes elibrary quadraphonic matrix perspectiveadvances in. Copying content to your website is strictly prohibited. Qs and sq were different, and while you could use one decoder for the other system, it didnt quite come out right. With an advanced vector cancellation matrix multiplier decoder, sq could sound as discrete as cd4.
Laserdisc database view topic quadraphonic 4 channel decoder. Quadraphonic audio was the earliest consumer product in surround sound and thousands of quadraphonic recordings were made during the 1970s. So i used my phono preamp, and went in through tape in. Quadraphonic audio formats were more expensive to produce than standard twochannel stereo. It is never discussed and i suspect columbia wanted it that way. Quadraphonics first appeared in 1969, shortly after the first multitrack studio recorders appeared on the market. Quadraphonic or quadrophonic and sometimes quadrasonic sound equivalent to what is now called 4. Although it is considered obsolete, quad still sounds cool. Did not realize free shipping box was still checked from previous listing. It was introduced by cbs records known in the united states and canada as columbia records in 1971.
Quad was not one format but myriad different and largely incompatible formats on different media. The page authors quadraphonic musings and creations how to do calculations for quadraphonics the accelerating death of standards means loss of recordings as equipment fails. I am not using the sq qs decoder right now because my surround receiver has. He was also the only person i ever encountered with a quadraphonic sound setup. Discussion in music corner started by bill cormier, feb 27, 2016. I belive after a lot of reading and an immense amount of confusion i need a hilbert transform implemeted via a fir filter. Jim fosgate designed the dolby prologic ii decoding system, bringing us full circle. I have a few sq encoded quadrophonic vinyl lps that i really want to encode to. If such a decoding software does exist, ill buy the necessary quad. Simulate hardware stereo to quadraphonic doom9s forum. I was looking at what they are getting for used decoders on ebay and the price is just to high. This poll section includes all titles and formats released in the 70 quadraphonic era, including sq, qs, cd4 lps and q8 and q4 tapes. An extraordinary stereo achievement, the qs1 is having a profound impact on. Jul 12, 2009 the first preamp with a sq decoder was the pioneer qc800a.
Handmade qssq full logic quadraphonic decoder sq demo youtube. Quadraphonic decoding with surround sound vinyl engine. Every nuance of the original recording is preserved in the transfer. Please let us if you would like us to link to or post your design. The fosgate research tate ii sq decoder and the minim ad10 ambisonic decoder by william sommerwerck. Sq decoding with adobe audition for new converters start here. I started collecting anything i could get my hands on, knowing i. The other major area that no hardware or software decoder has ever attempted to deal with is the fronts. From what i understand the original prologic was based on sq technology and pl ii was based on qs. Jan 02, 2008 yesterday, when i was writing about the aborted attempt of the music industry to put some kind of copyprotection system into vinyl, i mentioned in passing an old friend of the family, who had hoped that his decoder gizmo to bypass the system would make him rich. It was developed so that qs, ev, and sq quadraphonic records could be intermixed on a record changer.
Stereo lab jvc cd4 decoding in software pspatial audio. Being offered is a beautiful quadraphonic sq decoder from sony model sqd2020. Quadraphonic 2channel home audio the klipsch audio community. Qs and sq with about 150 titles released on the rca label and about another 100 titles on other labels such as. Sq quadraphonic stereo quadraphonic was a matrix 4channel quadraphonic sound system for vinyl lp records. Oct 17, 2016 later, the fosgate decoders came out using the same tate system. Audacity is free software, developed by a group of volunteers and distributed. Handmade sq three band full logic quadraphonic decoder national kid. Only way to listen to them correctly is to use an sq decoder. Yesterday i got it all working and have been playing my limited selection of sq encoded lps, which include the delights of barbara streisand and andy williams, but also some blue oyster cult and mike oldfield. Qs sq matrix 4channel quadraphonic full logic surround circuit. Quadraphonic sound reproduction is now possible with your present high fidelity music system by using the sony decoder amplifier model sqa200 which has an amplifier and also two output connectors for the back speakers and two additional back speakers.
The suzanne ciani album, live quadraphonic, mastered by sedillo and cut to 12inch vinyl at 45 rpm by chris bellman and sedillo, will be available this summer via kamrans company, cykik, in a package roughly the size of a 2inch tape reel box that will include an involve audio hardware decoder. The vario matrix decoder could also play sq records on phase matrix mode with 6 db separation. Lately, the 101a can sell up wards to a grand on ebay. This was serviced about a year ago and aligned to factory specs and is in good working condition. My only source of sq encoded material is on lp, and this has no phono input. Aes elibrary quadraphonic matrix perspectiveadvances in sq encoding and decoding technology. Im trying to create a quadraphonic sq decoder in software. Quadraphonic 2channel home audio the klipsch audio. Is there any software codecs than can accuratly decode sq vinyl records and if so, how would i reenocde to playback on modern sourround systems. Decoding sqqs matrix quadraphonic lps with your pc polk audio. No sound from rear speakers when quadraphonic is selected. Quadraphonics promised to provide a musichungry public with music from vinyl records over four loudspeakers instead of stereos two.