January 7th, 2018, 2:53 pm
January 7th, 2018, 3:11 pm
mycom57 wrote:I first got involved with audio at age of 14, and built my first loudspeaker out of ¾” plywood based on KEF Kit #1 bought from the importer. It was not until my freshman year that I’ve built my first pre-amplifier and class AB amplifier. Once you have the hook, you can’t stop it.
I am strong analog believer, but jumped to any new technology, curious like many. And like many, this curiosity lead to more and more discoveries…
I was able to join the North Carolina Audio Society as it started in the late 1998, until its slow ending in 2006. The group had a strong core of 8 peoples, and its membership reached 30 for a short period, just more curious peoples.
Today, my system is based on analog playback, on my first DIY turntable: from an Ariston RD-11S donner, got the bearing and the platter, the 24-pole synchronous motor, the pully, the belt and the hinged dust cover. Built a solid 2” plinth (Purpleheart), and re-assemble everything to it. I made a quadrature sine wave generator, and amplifying the output back to 120 Vrms using a small audio amplifier pushing two step-up transformers. The amplitude, frequency and phase between the quadrature signals are all adjustable, and monitoring my speed with an Allnic Speednic. It sports a Triplanar IV with a ZYX R100, running fully balanced (via XLR-3) to my DIY phono-preamplifier. I’ve built this one over the last year, and is a fully balanced (virtual ground) solid state design, two stages with passive RIAA correction. I used a low impedance LCR network (yes, balanced), have no capacitor in the signal path, and no overall negative feedback. My line stage is a Classé CP-35 (next project for me), running long XLR cables, to a modified Rane MX-22 crossover (2 channels, 2-way, + mono sub below 100 Hz), driving a Classé CA-200 (above 150 Hz) to the electrostatic panel of the original Martin Logan Sequel, and through an Emotiva XPA-2 (below 150 Hz) to the 10” woofers. The summed sub-woofer signal is pushed through an Emotiva XPA-1 to a DIY Maelstrom 18 + 2 PR 8 ft3 monster, tuned at 19 Hz. I am using a Velodyne to tune the subwoofer into the system. I have no equalization whatsoever, and I am listening in a trapagon (could do a golden ratio one, but I am pretty close) shaped room with minimal room treatment. Using an OKKI NOKI cleaning device, with VPI liquids. Recently added a SweetVinyl SugarCube-2 (beta) in the tape loop (Classé CP-35 has a single ended tape loop, and the SC-2 is also single ended). Currently, I am having the most fun ever with this system.
I integrated these two channels as the main front of my home theater setup, using the Emotica UMC-1, a five-channel Rotel amplifier, pushing inexpensive Magneplanar front, side and rear surrounds. Using an OPPO UPD-83 and a 1080P Epson projector. I witch the subwoofer from the Rane to the UMC-1 in home theater mode, using the Emotiva equalization.
My interest to join your group has multiple folds, the first one is there is nobody in Harrisonburg that I can tag along, I am recently excited with Streaming technology (including MQA), and planning to acquire a good Head Phone Amplifier and headphones. Always like the technical discussions, but also enjoy tweaking discussion and finally speak about great recording and great performances.
January 7th, 2018, 3:22 pm
January 7th, 2018, 5:09 pm
tomp wrote:Welcome and trust Walt. He has been through the program many times and still is trying. I have given up and am resigned to my DIY disease.
January 7th, 2018, 6:09 pm
SoundMods wrote:mycom57 wrote:I first got involved with audio at age of 14, ...My interest to join your group has multiple folds, the first one is there is nobody in Harrisonburg that I can tag along, I am recently excited with Streaming technology (including MQA), and planning to acquire a good Head Phone Amplifier and headphones. Always like the technical discussions, but also enjoy tweaking discussion and finally speak about great recording and great performances. Marc
I can sign you up for a 12-step program for rabid audiophile addicts.
January 7th, 2018, 6:28 pm
January 7th, 2018, 6:43 pm
January 7th, 2018, 6:49 pm
January 7th, 2018, 6:57 pm