Welcome Thread: New Members please introduce yourself here

[MiserableRomance]

Hi, new member looking to learn more about the basics. Just bought a cheap hybrid sacd with the intention of ripping the redbook layer and when I was having trouble getting that working decided I might as well just rip the SACD side. Got my first SACD player on the way.

 

[Petr Kropotkin]

Hi, new member looking to learn more about the basics. Just bought a cheap hybrid sacd with the intention of ripping the redbook layer and when I was having trouble getting that working decided I might as well just rip the SACD side. Got my first SACD player on the way.

Er, ripping SACDs per se requires a particular type of player that has the appropriate Sony chip. Apart from the Sony PS3, there are old Sony and Oppo players that can rip SACDs, but all are OOP, so you'll have to hunt around for a second-hand one. Here's one list of the models:

Down the Rabbit Hole of SACD Ripping and DSD Extraction

 

[gene_stl]

https://hifihaven.org/index.php?threads/rip-sacd-with-a-blu-ray-player.3652

 

[lostmybearing]

Hello everybody!
I bought a Sansui QR-6500 in 1986 or thereabouts. I love it , but, I don't really know that much about quad. I am here to learn.
I have used it for synthesized quad exclusively.

 

[biggoofysmartass]

So I registered here hoping to get some insight. I own a TOPP MODEL ADS-42 SOLID STATE SYNTHESIZER PLUS DISCRETE 4-CHANNEL AUDIO AMPLIFIER which on my first try produced sound that was full of static and choppy. And I have a Longines Symphonette
4 CHANNEL MATRIX ADAPTER that is passive and has a phono input and speaker connections that, not being powered, doesn’t seem like it would amplify the sound. (Haven’t attempted to use it just yet.)

The all caps text was pasted from pics on my iPhone. Don’t mean to shout.

 

[brucks]

Well, I've already made a post inquiring how to rip the music files from a Blu-Ray (I have a Mac and had used MakeMKV/DVDAE to extract the music files and create hi res FLAC files). Anyways, thanks to all who immediately helped me out.

I'm more of a 2-channel guy with an extensive vinyl collection, but I have so many multi-channel DVD's/Blu-Rays and finally will have a home theater setup (Anthem AVM 70 and Anthem MCA 525 amp) to hopefully enjoy multi-channel through, that I wanted to become more familiar with the media. And, what a great place to learn about all of the new music coming out. Looking forward to reading and learning more from you all and hopefully contributing some useful intel some day!

 

[gene_stl]

Welcome, new folks!

 

[barfle]

So I registered here hoping to get some insight. I own a TOPP MODEL ADS-42 SOLID STATE SYNTHESIZER PLUS DISCRETE 4-CHANNEL AUDIO AMPLIFIER which on my first try produced sound that was full of static and choppy. And I have a Longines Symphonette
4 CHANNEL MATRIX ADAPTER that is passive and has a phono input and speaker connections that, not being powered, doesn’t seem like it would amplify the sound. (Haven’t attempted to use it just yet.)

The all caps text was pasted from pics on my iPhone. Don’t mean to shout.

Welcome aboard! Most gear that’s that old probably needs to have the electrolytic capacitors replaced, so that’s where I’d start. Yeah, there wouldn’t be any amplification to a passive “adapter”, but I’d like to see the back panel of the Longines Symphonette to try to understand what they’re hoping to accomplish.

 

[biggoofysmartass]

Welcome aboard! Most gear that’s that old probably needs to have the electrolytic capacitors replaced, so that’s where I’d start. Yeah, there wouldn’t be any amplification to a passive “adapter”, but I’d like to see the back panel of the Longines Symphonette to try to understand what they’re hoping to accomplish.

Hit reply before the photo uploaded. The next post has the image

 

[biggoofysmartass]

 

[barfle]

View attachment 95705

Yeah, those are definitely not intended for speakers. I suspect some sort of passive matrix, with a few transformers and capacitors in the box to derive or synthesize a rear-channel output. It’s fancier than my first “surround” setup, which simply used really crappy speakers for the backs, with the response differences being the only thing making the rears sound different than the fronts.

Enjoy the ride, but buckle up, ‘cause it promises to be wild!

 

[biggoofysmartass]

Yeah, those are definitely not intended for speakers. I suspect some sort of passive matrix, with a few transformers and capacitors in the box to derive or synthesize a rear-channel output. It’s fancier than my first “surround” setup, which simply used really crappy speakers for the backs, with the response differences being the only thing making the rears sound different than the fronts.

Enjoy the ride, but buckle up, ‘cause it promises to be wild!

Found this: US4034158A - Quadraphonic passive four-channel decoder - Google Patents

It has all the words, some of which almost make sense in the sequence used.

Basically looks like the phono input is from the amp, and the output is to the speakers. Will try a preamp into the box from the turntable first. If I have more to report, I’ll probably start a new thread.

 

[MagusPerde]

Introducing Myself:

I've been into multichannel sound for over 50 years, but for some reason, I only discovered this forum today. I was active in the long defunct SMR forums though.

My first multichannel system happened in my freshman dorm room in 1971 when my roommate and I connected our two stereo systems using a Hafler circuit that we found in some magazine. That was pretty fun. and worked reasonably well. A few years later, a new roomate and I combined our systems into a full blown quad system with a Sony 2070 decoder and a Panasonic 405 CD4 demodulator, both somewhere in my storage to this day.

With the demise of Quad, I went with ordinary stereo until the late '80s when I got a Lexicon processor Dolby Surround processor for movies and discovered that it did a great job simulating multichannel with stereo recordings. Due to Lexicon' generous trade-up program, I exchanged every Lexicon processor I had for the latest model culminating with the MC12B-HD which died in 2013. To this day, I think that there is no better multichannel simulator/extractor than Lexicon's Logic 7. My sources were different species of Oppo players for DVD-A and SACD and a Meridian Sooloos system for Stereo.

Since my MC12 died, I've gone though a variety of unsatisfactory processors until I landed upon the Trinnov Altitude 32 two years ago. I love this processor, but I find the configuration instructions to be really impenetrable unlike the Lexicon which was so easy to set up. My sources are a Technics SL-1200 turntable into a Surround Master v3 into the 7.1 analog inputs of the Trinnov; a Roon server with tons of 2.0 audio rips as well as several hundred 5.1 rips from DVD-As, SACDs and Blu-rau audio discs. My system is also a home theater which has two Kaleidescape systems, a Premiere system for HD and an Encore system for 4K, as well as an AppleTV 4K. I have about 30 Blu-ray discs with Dolby Atmos music on the Kaleidescape Premiere system.

I've been really up to speed on how to make all my complex equipment to work until I encountered Dolby Atmos, which I find very confusing to implement. But I'll ask those questions in the relevant forums.

Nice to be here.

 

[gene_stl]

Welcome!

 

[DuncanS]

Found this: US4034158A - Quadraphonic passive four-channel decoder - Google Patents

It has all the words, some of which almost make sense in the sequence used.

Basically looks like the phono input is from the amp, and the output is to the speakers. Will try a preamp into the box from the turntable first. If I have more to report, I’ll probably start a new thread.

Looking at the patent diagram the circuit shows the amplifier speaker outputs are the input to the box, which then is split into 4 channels going to the speakers.

Your box as barfle says looks like it is all at pre-amp signal levels, so the 4 outputs needs to be amplified before going to the speakers.

 

[barfle]

Found this: US4034158A - Quadraphonic passive four-channel decoder - Google Patents

It has all the words, some of which almost make sense in the sequence used.

Basically looks like the phono input is from the amp, and the output is to the speakers. Will try a preamp into the box from the turntable first. If I have more to report, I’ll probably start a new thread.

As a former patent examiner (worst job I ever had, and that includes baling hay), patents seem to be intended to confuse. They are generally written by lawyers who want to sneak something by the examiner.

The RCA jacks pretty much mean the power levels are low, but that’s something I’ve seen plenty of in “budget” gear.

 

[gene_stl]

Although @biggoofysmartass 's box has RCA connectors and probably could be used between preamp and power amps I think the intention was for it to go AFTER a stereo power amp and before the speakers. Sometimes on inexpensive equipment which Soundesign definitely was RCAs were used for speaker cabling, usually with molded paired wire rather than shielded cable. The patent language also refers to it being after the amps and before the speakers. It might also be usable between a preamp and power amps depending on input and output impedances. A brief scan of the patent did not mention the resistance of the resistors in the network but they are likely to be too low for the preamp/power amp use.

 

[biggoofysmartass]

Although @biggoofysmartass 's box has RCA connectors and probably could be used between preamp and power amps I think the intention was for it to go AFTER a stereo power amp and before the speakers. Sometimes on inexpensive equipment which Soundesign definitely was RCAs were used for speaker cabling, usually with molded paired wire rather than shielded cable. The patent language also refers to it being after the amps and before the speakers. It might also be usable between a preamp and power amps depending on input and output impedances. A brief scan of the patent did not mention the resistance of the resistors in the network but they are likely to be too low for the preamp/power amp use.

It makes more sense to me for it to come after the power amp as the amp would need four separate inputs for each channel. If the quad signal comes from two channels meant to be decoded for separation, then it makes sense for the decoder to between the amp and speakers. I will try to make time for this today and share my results. I appreciate the input.

 

[imprime_grille_0p]

Hello from Paris, France, on a different note...

I came acquainted with your site as a fan of surround sound and I enjoy what I read here and there on the site.

My collection is not big, but I enjoy Multi channel SACD Multichannel both physical and SACD ISOs, DTS CDs I burned along the years - which sometimes include quadraphonic stuff of the 70's.

I am using a Sony Blu-Ray player for the CDs, and for dematerialised files, a Mac mini accessing a Synology NAS to play material through an Audirvana + player.

By the way, I thought that maybe someone would have posted here something regarding the difficulty I often encounter with Audirvana + not always smoothly "reading" SACD ISOs (sometimes 3-4 minutes to load the ISO and start reading the first track, pauses in tracks reading process for buffering going at time at lower speed than reading - sorry for not using always the right terms for French being my mother tongue - and suggestions for an alternate solution to Audirvana on this, but maybe I do not know yet how to search on the forum properly, so If anyone reading me can be of support, it would be greatly appreciated !

Greetings form the City of Lights...

 

[gene_stl]

Welcome!