atmasphere
Responses from atmasphere
| Phono Preamps with "balls" ? @jcarr I agree that jfets are the way to go- although I like some of the aspects of the MAT-12s (which are bipolar, but a popular goto for phono front ends), getting them to actually sound right has been a problem so far. The jfets I want to use t... | |
| Phono Preamps with "balls" ? first that the phono-preamp has enough gain for the cartridge output level and be by preference a SS ( bipolars. ) design with no single tube inside, second that be an active high gain design FWIW, it is a lot harder to build a solid state phon... | |
| A Question on Speaker Driver Efficiency @timlub +1 | |
| A Question on Speaker Driver Efficiency Each is not absorbing 1/2 watt when placed in series (with the required 2.83 V applied) and the net acoustical sum of output is approximately 97db - not 94db. Two obvious errors in one sentence. The math doesn't lie and frankly, I'm getting a l... | |
| A Question on Speaker Driver Efficiency I'm the only one in this thread actually citing equations based on Kirchoff's law while you hand wave generalizations about tube amps. Really? Hand-waving seems to be what you are doing with this quote...Somehow you don't seem to make the connect... | |
| A Question on Speaker Driver Efficiency This jives with measurements I've made of acoustic output of drivers in series. Sounds like you are running a solid state amp. Solid state amps, generally speaking, are usually built to behave as a voltage source. If that is the case, it will make... | |
| A Question on Speaker Driver Efficiency Incorrect? Really? In theory, they move at EXACTLY the same time only when no capacitance exists in the circuit. Current through the coils is the same at any given time only when the circuit doesn’t have capacitance. We know this is not the cas... | |
| A Question on Speaker Driver Efficiency One last question for everyone...- In parallel - each driver would move at EXACTLY the same time (pretty much)- in series - would the second speaker in the "chain" be moving slightly behind the first speaker due to lag time through the voicecoil... | |
| Connecting a unbalanced output preamp to Krell FPB350 balanced amp I have tried Option #1 with the screen connected to pin#1 at the XLR end and as a second experiment with the screen connected as above and also tying the screen to the return at the RCA end. This second method helped to drop the hum but it was ... | |
| Tube Preamps..... I would concur with recomondarions on preamps based with 6SN7 tubes. There is something special about this tube type, and there is (relatively speaking) a great selection of old tubes that you can roll with terrific sonic changes. Something SS ... | |
| Phono Preamps with "balls" ? "balls" in this case means gusto, drive, dynamics and power. these are definitely qualites that can be associated with phono preamps. having owned many that were somewhat weak or anemic sounding I wanted to put a list together of some that ar... | |
| Personal Preamp Evolution Dyna PAS-3Citation 1Fulton Braveramodified EICO HF 85 with outboard tube regulated power supplyAtma-Sphere MP-1 Mk1 (about 1989)and then succeeding MP-1s- on Mk3.3 right now. | |
| Connecting a unbalanced output preamp to Krell FPB350 balanced amp Several things to try:1) Using the regular XLRs, if the center pin of the RCA is pin 2, make sure pin 3 is tied to pin 1 (ground) and see if that shuts it up. 2) you may have to float the ground pin of the amp's power cords (this should only be do... | |
| Phono Preamps with "balls" ? Please some one of you or all can share why is that?Sure- because most phono sections can play bass better than digital :) | |
| Phono Preamps with "balls" ? Sheesh.do you still think that R2R is the best analog reproduction medium? No, I've never said that. LP is superior since it is lower distortion, lower noise and wider bandwidth. This is why LPs are used to release albums recorded on tape and not ... |