oldenit

@BobTFM35 just read pg 52 and has me wondering. I’m using a Yamaha M50 amp until I can get my M4 amp recapped. I have the kit to do it but just haven’t had time to do it. my M50 has circuit protection - speaker protection among other things like stopping a nuke burn up I would hope lol. So I’m wondering if adding the required speakers would trip the protection circuit. I don’t really need to build this setup but damn the urge to experiment like it is 1978 again is creeping up in me. Guess the only way to know is to build it.

@AndrewJohn thank you. Great reads. I used to devour anything electronic - from my crypto days - and I found these links very interesting. Now that I have lots of spare time I have rekindled my interest in electronics especially stereo. My memory of the Carver sonic hologram bubbled up in my head and the memory of that one article with free license to make his SH for home use is just bugging me to no end. All the posts here have basically answered all my questions but it is still nagging me to find that article which may never happen.

@jmcipale yes. That is basically what I remember from Bob Carvers article. Almost 50 years has dulled my memory but it does look a lot like what I can remember. But something is missing in my mind about Carvers article. I think the 60’s and 70’s was harder on me than I remember 😂 thanks for the posting this

Thank you for your service also @Half Life. It’s good to hear from others who served. The Audio magazine with the article by Bob Carver on pages 26 to 35 explains the reasoning behind the sonic hologram and touches on what I remember about using two extra speakers crossfed canceling signals rings a bell. I remember having two smaller speakers a little closer to the listening chair/couch and I vaguely remember the crossfed signals. While this is the basic setup in this magazine it is not the one I remember. I have been searching all day trying to find that exact article. I’m glad you found this article because it rocked my sometimes dormant mind into remembering. The one I remember was an article with him explaining it and going deeper into the setup and then saying he gives anyone who sets one up the right to use it free of charge as long as it was for personal use only.

Thank you all. It is much appreciated by me and all the others who serve/served. Always great to hear.

I have the Carver C9 that worked really great if you used a tape measure to set speakers and the listening chair or couch in my life. Although it just today decided to start blowing the 1/8 amp fuse when the engage button was used. Possibly a direct short the way it blew. I was just interested in tinkering with the free Carver SH if instructions could be found. I’m 72 and disabled from the army so I have lots of spare time so I’m getting back into electronics and experimenting.

Sadly when I was in the army I packed it away with the rest of my stereo and some greedy person stole everything while I was in Germany in the 80’s. I had a box of instructions and manuals for all my stereo that also had a printed copy of the Carver instructions. All are gone now. I vaguely remember the Carver SH used a second set of speakers that were hooked up a certain way but that is all I can remember. I can’t see what you posted. Wish I could.

Hopefully this is an acceptable question. Back in the late 70’s or early 80’s or so Bob Carver published instructions on how to make your own sonic hologram and gave license to do it and use it. That is what started me buying his equipment. I owned a lot of Carver equipment starting with Phase Linear and then his own named equipment. I used his instructions to experiment and to make my own and wondered if anyone else did and if those instructions are still available. I looked through the site and didn’t see anything though I could have missed it.