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Best. Customers. Ever.
- Thread starter Overture
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Help Support QuadraphonicQuad:
MidiMagic
2K Club - QQ Super Nova
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One item: On any mono recording, you have to ignore the content of the vertical part of the groove. Manufacturers did not control for noise in the vertical direction.
The MONO switch shorts the two stereo channels together, eliminating this noise.
The MONO switch shorts the two stereo channels together, eliminating this noise.
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Nostalgia corner
Just found this picture tonight, not sure if I posted it previously but its the very first analogue hardware version of the surround master way back around 2008. I see that I stole a few chips from the middle. It worked fine but there was a weird low level whistle coming from the VCA chips........never did fix that until the DSP.
Just found this picture tonight, not sure if I posted it previously but its the very first analogue hardware version of the surround master way back around 2008. I see that I stole a few chips from the middle. It worked fine but there was a weird low level whistle coming from the VCA chips........never did fix that until the DSP.
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Very cool, thanks for sharing the circuit board porn. So version 2 really is a chip off the old block
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Actually Version 1 was (the one in the shitty plastic box- don't get me started!)Very cool, thanks for sharing the circuit board porn. So version 2 really is a chip off the old block
Circuit geek that I am, may I ask what VCA's you were using? The ones from THAT CORP is the best I know of. And how did you do RMS/LOG sensing in analog?
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Truth is I cannot remember tonight. Will see if I can dig up the circuit in the next few days
Just curious. No bigee. Don't go to lots of extra trouble to answer this!
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Hey Sonic
We used the Analogue Devices SSM2164
https://www.analog.com/media/en/technical-documentation/data-sheets/SSM2164.pdf
As I said it has a low level weird whistle about it. Cannot find the schematic on the log conversion but it was a opamp diode thing, the averaging on that proto was not RMS (it is now via DSP)
I designed some circuits using (pre-ADI ownership) SSM (Solid State Music) op-amps, great amps, with very low distortion, wide bandwidth with good gain, which was what I wanted. But if you didn't put a capacitor across the differential inputs (as per their datasheet/App Note) it would oscillate. Never found out why!
Edit: I was just wondering if I still have the datasheet up in the loft with the rest of my stuff from my PhD. Now I'm curious I'll have to have a look.
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Hear is a recent photo of our R+D team working on our stereo encoded surround format:
I see it has both height & depth localization as well as width.
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It looks slightly smaller than my STAX Lambda headphones!
You know what would really be cool @chucky3042 & @Overture 
There's been a lot of discussions here on the forum about the lament of a quality Universal multi-format Blu-ray/SACD player with analog outs to replace the oppo units. It would be damn cool if Involve could partner up with (*instead of a company that makes Receivers) a smaller company that would make a great quality machine, that you could incorporate some chips into that would be able to do what the Surround Master does.
I'm thinking a company like Emotiva, or better yet, build one yourselves and be a player in that market.
There's been a lot of discussions here on the forum about the lament of a quality Universal multi-format Blu-ray/SACD player with analog outs to replace the oppo units. It would be damn cool if Involve could partner up with (*instead of a company that makes Receivers) a smaller company that would make a great quality machine, that you could incorporate some chips into that would be able to do what the Surround Master does.
I'm thinking a company like Emotiva, or better yet, build one yourselves and be a player in that market.
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Hi PupYou know what would really be cool @chucky3042 & @Overture
There's been a lot of discussions here on the forum about the lament of a quality Universal multi-format Blu-ray/SACD player with analog outs to replace the oppo units. It would be damn cool if Involve could partner up with (*instead of a company that makes Receivers) a smaller company that would make a great quality machine, that you could incorporate some chips into that would be able to do what the Surround Master does.
I'm thinking a company like Emotiva, or better yet, build one yourselves and be a player in that market.
Actually I have tried to contact Emotiva and had no reply! Bloody typical they are behaving like all other big companies. I might give it another bash and see. But yep you are right!
That would be epic Chucky
-maybe a huge write-in campaign to Emotiva for a wake up call by the members here
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That's what I call a plan big dog!
Was perusing bull moose today, and discovered this gnarly looking gent 
... hmmm....
... hmmm....
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And as a robot on Star Trek!
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Corona virus, you can never be too careful!!!!!
Due to Dave the Bitch's recent operation and Corona isolation in the leper state of Victoria, he has been working from home recently. Our programming gizmo in the office was stuffed, so I had to deliver a batch of the new Y4 amplifiers to Dave so he could program them on his home gizmo.
Due to operation/ wife (sorta)/ kiddy and concerns of transmission we agreed for a NON CONTACT DELIVERY. Well here I am with my solution - I failed the O.J test with the glove! Had "issues" zipping up the hazmat suit to.
Due to Dave the Bitch's recent operation and Corona isolation in the leper state of Victoria, he has been working from home recently. Our programming gizmo in the office was stuffed, so I had to deliver a batch of the new Y4 amplifiers to Dave so he could program them on his home gizmo.
Due to operation/ wife (sorta)/ kiddy and concerns of transmission we agreed for a NON CONTACT DELIVERY. Well here I am with my solution - I failed the O.J test with the glove! Had "issues" zipping up the hazmat suit to.
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