atmasphere

Responses from atmasphere

Dali MegaLine overviews from owners ?
Albert likes his speakers a lot. We have a customer running a set also; what we have found is that the speaker is very easy to drive and does not need a lot of power for thunderous bass- 100 watts top and bottom is plenty. 
amplifier DB meters
Nice! I think my SF2 is the only twin on the road in the Twin Cities. Seven SFCs together at the same time.... 
Tube Pre-Amp Question
I would also try floating the AC ground on your power amps. You might be experiencing a ground loop if the power amps are grounded through the AC cords. 
Tube amps and speaker ohms
Anytime you are investing in tube amplifier technology, that investment will be best served by a speaker that is at least 8 ohms or more. Tube amps, with rare exception, have reduced performance into four ohms. Given that you have satisfied that p... 
What Makes a Good RIAA or Line Stage?
Two of the main points I can't get around are:(1) Whether or not a cartridge is a balanced or a floating single ended device. Floating single ended makes more sense to me.and(2) Since everyone more or less agrees that there isn't a 6dB noise advan... 
tube amps/low capacitance cables?
Whatever the deal is causing the lack of bass with that cable, its not capacitance. Length, cross sectional area and the characteristic impedance are more likely variables. By decreasing the 'damping factor' the bass would actually increase, altho... 
What Makes a Good RIAA or Line Stage?
Hi Thom, what is it about my explanation that you do not understand? 
Older PURE CLASS-A Amplifiers
There are a lot of Class A tube amps too- any reason they are not on this thread? 
amplifier DB meters
Hi Bob,I heard that and we're thinking of making the ride (probably on the SF2). The SFC and the MV Agusta 750S are some of my dream bikes... 
amplifier DB meters
Hi Bob, if you're using a VU meter, the thing to do is to calibrate it against the load you're using- in this case your 4 ohm speakers. To do that you'll have to measure the output voltage of the amp and then calculate the current to then get to t... 
Difference between SET and push-pull using 300B
High capacitance is not that strange in a speaker cable, as the capacitance contributes to lowering a quality known as characteristic impedance. When the characteristic impedance of a cable matches that of the speaker, you get a little more effici... 
what does loading on back of pre-amp for phono mea
The loading inputs are for loading resistors. Both MM and MC cartridges have ideal loading that is less that the stock 47K of the preamp itself. So (wisely) they made a provision. 
Equilizer to reduce surface noise on bad records?
Cal208, I would also recommend that you look into the cartridge loading. If the cartridge loading impedance is too high (47K for example- no cartridge I know of actually loads at that impedance although many say that in the specs) the cartridge wi... 
what does loading on back of pre-amp for phono mea
Wouldn't that be the setup for the cartridge loading resistors? 
Difference between SET and push-pull using 300B
The primary issue between SE and PP is the output transformer, although PP often has some additional circuit complexity. But its the transformer that makes the difference.When running PP, the signal has to go from positive to negative and then the...