rodman99999
Responses from rodman99999
| The Audio Critic "I have normal human hearing." Everyone's hearing acuity varies, just as every other of the senses. ie: The palette & tongue must be trained to discern in what region of the World a certain wine's grape was grown. Yet(even if trained); some ha... | |
| The Audio Critic Ranks with Julian(The JOKE) Hirsch? I couldn't have chosen a better word than, "RANK!" SO- A member of the everything-sounds-the-same club? There's a real dubious distinction! I suppose one COULD be deaf, honest AND in denial. | |
| Plugging ported speakers and active Xovers Your dealer is correct. Very little output, at the port's resonant freq, if you're crossed over at 95Hz/4th order. If you block the port; you may be robbing yourself of some driver speed and efficiency. | |
| Which brand teflon caps do you suggest to cj? Which Mundorfs or Jensens are made with Teflon? If you're determined to go with Teflons, I'd have to agree with Mr P. AuriCap also makes some excellent Teflons, which I've used with great result(http://www.audience-av.com/capacitors/axo_descriptio... | |
| Refurbish a Dynaco St70 YEP! ARC's first FM tuner was based on the Dynaco FM-3. The M-60 MkIII C3 amp was a redesign of the Dynaco MkIII. ARC offered kits, to remake the ST-70, using only the chassis and transformers. Imagine what we'd have had, back then, if Hafler and ... | |
| Refurbish a Dynaco St70 "Pry- I meant with modifying Dynacos, not where he lived. :)" Actually: Mr Johnson began a company known as Electronic Industries, in Minneapolis, Mn, in 1951. He was building some amps back then. Another company assumed ownership, but- he stayed ... | |
| Refurbish a Dynaco St70 "but that is only if you consistently push the amp hard." I had the same Mullard GZ34(Blackburn), for about 15 years, but always had the system bi-amped, below 200Hz(ergo: wasn't pushed). "I really don't like modifying the chassis of older units- ... | |
| Refurbish a Dynaco St70 Hello Ralph- "the original design is quite competent except for the power rectifier system, which is handled by a single 5AR4." Just curious as to whether you've ever added a second 5AR4(and heater transformer) to an ST-70. | |
| Zany measurements and theories There are a number of references cited, in the first post of the following thread: (http://www.vinylengine.com/turntable_forum/viewtopic.php?t=27421) No doubt; there's some interesting reading to be found. Especially the Journal of the Audio Engin... | |
| Zany measurements and theories Empirical evidence(empirical data, sense experience, empirical knowledge or the, "a posteriori") is a source of knowledge acquired by means of observation or experimentation. ie: The second 50% of my last post(my personal experience/observations).... | |
| Zany measurements and theories Most estimates for stylus surface temps range between 300-500 degrees(F). The temperature of your record will be at(or close to) room temperature, except at the point of contact with the stylus. Much will depend on VTF and RPM(higher numbers there... | |
| Refurbish a Dynaco St70 Personally- if I were going to rebuild an ST-70 now days and retaining a MOSTLY stock(tube rectifier/greater filter cap capacity) power supply(like I used to), I'd use this board: (http://www.curcioaudio.com/st7upg_3.htm), stuffed with higher qual... | |
| Refurbish a Dynaco St70 Depending on how in-depth you'd like to go; Joe Curcio may be the best person to contact. He has decades of experience, in rebuilding/modding the ST-70. These amps have some excellent transformers, which are(arguably) the most important components... | |
| Passive radiator Some prefer less bass from their systems. With a rear-firing port; wall proximity can become an issue as well. I used to provide a couple pieces of bonded Dacron, with my vented systems, so customers could adjust to their tastes. | |
| Passive radiator The cabinet should be sealed, to avoid noise and messing up the alignment. It will, however, operate as a bass reflex system. "Sealed enclosure" indicates an Acoustic Suspension system. |