rodman99999

Responses from rodman99999

Isolation Devices for Digital
Determine the weight of you CD unit. Install six Vibrapods (the correct model for your weight of course) to the bottom plate of the player(3 in front/3 in back). Find a piece of Dupont Corian 1/2" thick and the same dimensions as your unit(1/4" sa... 
CAL Alpha DAC: Stock vs. 24/96 upgrade
The following webpage contains a chart that will tell you what to expect from some popular 12AX7 varients (https://www.tubeworld.com/12ax7.htm). I don't like the Btitish coloration of the Mullard CV4004 personally. My favorite was the Telefunken r... 
Bose 901...really
You're right about the 801 appearing to be a 901 turned around. The interesting thing is: The 801s have no speakers firing at the back wall(8 drivers, total). That means NO reflected sound, ONLY direct. Their operational concept is the exact oppos... 
What does more power do for Magnepans?
Pa1- I really do think you will be surprised at how relieving your amp of having to reproduce bass/mid-bass can clean and open up your overall sound. Can you find a dealer that will let you audition one for a week or better? That would give you ti... 
What does more power do for Magnepans?
Your 9200 has pre-outs and 200wpc. If you were to purchase a Plinius P10(also 200wpc) you could bi-amp very simply. Magnepan offers an optional bi-amp x-over for the 3.6/R, and I'll bet one is also available for the 3.5. You might give them a call... 
Bose 901...really
It's been my experience, and my point in this discourse, that they have never sounded like live music by any stretch of the imagination. That(live music) is my reference, and will always remain so. I'm much more a sound technician/engineer than an... 
What does more power do for Magnepans?
For an understanding of audio output in db, and power requirement, read this:(http://www.axiomaudio.com/power.html) It would be nice if doubling the perceived sound only required doubling the power. The least I've powered Maggies with was a slight... 
Tube rectification
If the rectifier circuit does not have a feature to slow the high voltage from coming up to full: The life of your tubes will be severely shortened. A tubed rectifier circuit allows the tubes to slowly warm up to full operating temps. Because ther... 
Bose 901...really
I don't think I've read any ratings on those smallish woofer systems that claim much below 40-50hz. Nothing in what I consider the bottom octave. And you are absolutely right on two counts: they still beat their hearts out trying, and that's why s... 
Bose 901...really
But none of those current speaker designs are trying to reproduce everything from 20Hz to 20kHz with that same one driver. The laws of physics just don't allow it without distortion. Perhaps one day the 901 will be produced with a cone than acts a... 
Bose 901...really
Eldartford- I missed that last sentence. Hey- If it works, and you're happy: don't change it!! Just build your airplane around it. Maybe if you keep it in the corners, your wife won't notice? Tell her it's an acoustic treatment to eliminate spurio... 
Bose 901...really
Good old Amar's first concoction was the "2601" and had that many speakers(26, or was it 28?) arrayed on the surface of what looked like 2 segments(eighths) of a huge grapefruit that sat in the corners of the room. Of course, the speakers were the... 
Where can I find a RS1b bass driver?
I've bought a lot of parts(cones/surrounds) from Millersound. A very knowledgeable and pleasant person to deal with! He would be my recommendation as well. 
Bose 901...really
Hi Eldartford- I envy you for your soundroom. If I had a room that big, I'd be torn between using it as a listening room, or rebuilding my cars/bike in there(too many loves, not enough room). I've a number of recordings that were done personally, ... 
Extreme Midrange Bloom
Those teflon V-Caps do sound intriguing. AudioCap has teflon/tin foil caps as well. Same manufacturer as the MultiCaps I recommended. These caps are the creations of one Richard Marsh(the founder of Marsh Sound Design). If you know how good his el...