![]() Pls let me know if anyone wishes me to start any of this? For other listening sourpusses I bought her 2 Tivoli radios and that does great job. My mother (she is 95 and last 20 years suffers from macula degeneration) inspired me to make blind friendly device to read audio books, Not an easy item to find. Sounds as off subject, but forum is called "audio" and not "hifi" and audio radio for elderly, visual impaired or blind people. This is not about circuit diagram on a PCB, but about mechanical things, wiring mains, wiring PS, transformer, various connectors, wiring ground (I said it, I see many heat about grounding here). ![]() While it was decent product in itself, I counted over 40 changes I made. Rebuilding an amplifier one PA 6 channel amp is on my desk now in process of upgrade. FAST 10" ala sonotube (but this one is from sewage pipes) + B80 widerange in a ball (made from Ikea salad bowls)Ĥ. Nelson Pass inspired (not his design, its mine but I had him in mind) fully differential 2 stage amp AB classģ. Limestone plinth and plate turntable with super heavy bronze bearing + fully balanced MC + passive RIAA phono stageĢ. What do you think would be best for start, please let me know:ġ. I would like to contribute DiyAudio by one article (to open subject about what I did, with hope for improvement ideas from the group) as I cant write all at once. Here is latest, still in fine tuning project 10" woofer in a reflex tube + Visaton B80 in a ball, active amplification of course son (which is blessing), We went from city center to stand alone house on the hill and I finally have place to disassemble all my hobby boxes.ĭue to those circumstances, now finally I read Douglas Self book, many articles here, lot from Elliot Sound products (great guy, sorry he argues with Nelson, both views are legitimate), Rane and so on. My professional occupation (management consultant in packaging industry) slowly went down the drain, last job in 2010 gave me burnout an now I have 8 y.o. I was happily listening to what I have and said I will never build speakers again as its too much for me.īut since Covid, many things changed. Since then, until few years ago, audio was in big competition with life and other hobbies which are many. This is still my reference amp, even I measured it just lately and THD is not very impressive, but slave rate definitely is. here are 2 pictures, from design phase, and finished (white mass is limestone): Build what I was always dreaming off a proper turntable.Built fully differential preamp based on IRF610 LTP and 24pole rotary switch volume control, inspired by Nelson's Balanced Zen.Still my reference when I want to check my sanity. I bought my Sonus Faber Signums, I have serial number 18. ![]() At the same time my financial situation was great, so: It worked!Įnd of 1990's and beginning of 2000's the internet became a blessing, I started to read articles from Nelson Pass and became religious, not that I am religious other ways in any way. But there were few misconceptions that I learned about later they teach about ground planes as solution for all ground issues (while its not) and encouraged my addition to tantalum condensers, which also proved wrong with time.Īt that time, 1993 - 1994, I bought KEF construction kit and built preamp, 3x24db/octave xover and 6 channels of amps (4 were standard 3 stage (bass and mid) based on MJ802/4502 transistors, and for highs I made double LTP x one more double LTP + IRF530/9530 mosfets for tweeters). Then I learned some high end stuff about opamps. In early 1990's I quit my university (mechanical engineering) and got job from necessity, some money allowed me to continue without scavenging for parts, this book was something available and as you can see from picture, read over and over many times. But amp was great, and speakers could be also if the moths didn't eat membranes while laying in garage. ![]() Radio was mono and I needed stereo, it was also only AM so no use for anyone. Oh Lord how sorry I am that I destroyed radio from 50's with E元4 output stage and 3 x 8" paper cone speakers then. now) by dismantling parents audio devices for parts. I started this hobby in 1980's as teenager (I'm 56 y.o. Ill stay humble with my things, I know something, but by far not a master in this subject. So much experience, knowledge and innovation!. The size of this community is overwhelming for me, it seems that everything is already digested, maturated and answered in every possible way. This is just to mention few of my liking, there are 100's of great posts here. Particularly I liked 10F/8424 & RS225-8 FAST / WAW Ref Monitor from Xrk and DLH Amplifier: The trilogy with PLH and JLH amps from Diego. Finally I registered at this site, deliberately didn't say joined as for last couple of years I read several threads here throughout as observer, so I already feel like part of it.
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