atmasphere

Responses from atmasphere

Help needed solving amplifier problem/mystery
Canjo07, you speakers are OK. But I spotted something in one of your posts that sounded like a procedural error.Swap the channels left for right at the input of your amp. Then wait for the problem- is it still in the same channel?Yes=> amplifie... 
Tube vs. Solid State Rectifier
Tube rectification is nice if you can do it! Newer tube amps have bigger power supplies and so can easily damage a tube rectifier during warm-up. So a tube rectifier usually means that the capacitance in the power supply is limited to a small valu... 
Upgrade from Pass Xono - Recommendations
Of course I think there are tube phono sections that are better, but one of the better, maybe best solid state phono sections I've heard is the Tom Evans. Seems to me it is kind of pricey- about $10,000 if I recall right. 
Classic Audio T1 and T3 field coil loudspeakers
Jtimothya, I have T-3s at home. The T-3 as an all-alnico unit is $15,500. You can add the field-coil drivers as options. The midrange is the most important (that's what I have right now- next step is the super tweeters), that puts the cost at $18,... 
SET the best?
IMO if there is a subsonic rolloff, you hear it as a diminution of bass impact. It can also be measured quite easily- square wave tilt is the measurement. Having played around with LF cutoff frequencies a lot (our amps are full power to either 1Hz... 
Best Used Record Shops- Phoenix Area
If you can go down to Tucson, PDQ has always been a great store (520) 881-2681 
SET the best?
The cutoff frequency of the amp does play a role. Generally speaking, you can hear artifact associated with the cutoff (-3db point) at frequencies up to about 10 times the cutoff frequency. So if the amp starts to roll off at 20Hz, you can hear ar... 
New to SET - Help in all areas
Dehavilland makes some of the best SETs out there IMO and they go well with the ZU loudspeakers. 
SET the best?
Johnk, the post was worded right. The upper power limits of SETs in a way are more of a function of the output transformer that it is the tube! The bigger you make the transformer, IOW to handle more power, the less bandwidth it will have. If you ... 
cd player - xlr output buzzing
Bleoberis and Almarg, I was in fact thinking that the **output** of the CD player is where this pin 3 to pin 1 thing might have to happen. I understand Almarg's concerns but I have yet to see any line level electronics that could be damaged by thi... 
SET the best?
My speakers are 97 db and 16 ohms. I find that 30 wpc is not enough- its much easier to play the system if I have 60 watts. But the amps I use are designed to not generate any loudness cues to the human ear (unlike SETs, which rely on enhancing th... 
Sudenly silence
Newbee, no worries on this end. Most tube preamps have a coupling cap at the output that prevents DC. Failure in such parts even after 30-40 years is really rare. So DC at the output of the preamp is not likely to be the issue. I agree that DC at ... 
SET the best?
Phaelon, SETs are usually not very powerful. A big one is 15 watts, maybe 20. If you really want to hear what they do, the speaker has to be efficient enough that you never bring the amp anywhere near full power. At full power, the THD is often ab... 
cd player - xlr output buzzing
Check and see how the adaptor is wired. Sometimes if pin 3 is left floating, the result is a buzz. So the adaptor should have pin 2 tied to the center pin of the RCA, pin 1 of the XLR tied to the RCA ground, and pin 3 of the XLR tied to pin 1 of t... 
SET the best?
Saki70, the speaker should be designed for tubes. Seehttp://www.atma-sphere.com/papers/paradigm_paper2.htmlfor more information.I spent a few months tinkering with some 45-based SETs that I inherited last year. In analyzing the circuit, I realized...