atmasphere

Responses from atmasphere

Who positions their speakers straight ahead (zero tow in) and why.
@unreceivedogma I'd call that a moderate sized room. Some speakers have tweeters with lobes that make the best listening when the speaker isn't pointed directly at you. Every speaker is different...  
Phono Cartridge IMD Measurements, Observations and a Question
Are you suggesting that the platter mat contributes to IMD @lewm Yes. The role of the platter pad is still poorly understood in high end audio which is a shame. But its effects are easily measured and heard. Most platter pads are just plain w... 
Technics SL-1200 vs. Scoutmaster
@pryso 'Yes' and 'no'. I do know the weight is no concern for the SL1200 at all. The thickness is a concern since the center spindle is too short. So you can use a record weight but not a clamp.  
Your journey with lower-watt tube amps -- Can a kit be good enough?
Highs pretty clear, though perhaps some slight roll off. @hilde45 I was curious about this so I looked at the schematic of the amp.   The input resistor is 500KOhms (or 470K) to ground. With an input impedance that high, the amp can be sensit... 
Your journey with lower-watt tube amps -- Can a kit be good enough?
@hilde45 I read that a few years ago and bought one of EFB kits for one of my employees who had an SCA35. If you can shoehorn it in I think it would be a good move. You can use a pair of such kits and run separate cathode circuits as well. Or a... 
Class A\B or D for summer months (vs Class A)
your 99dB speakers could operate with a very low wattage amp. I have driven my 98dB speakers with a 2.3 watt decware amp with no problems.  I find that an SET tube amp generally puts very little heat into the room. I don't even have air conditioni... 
Technics SL-1200 vs. Scoutmaster
So, before I drop a bunch of cash on a new arm, what would I notice going to a 1200?  I've heard they're not quite as inky black quiet as the VPI, and not quite as much low-end.  Any truth to that? @mezz955 If you're talking about the Technics ... 
Your journey with lower-watt tube amps -- Can a kit be good enough?
@hilde45 If you install that update I mentioned about a separate cathode resistor and cathode bypass capacitor for each channel, the cathode resistor value is 190 Ohms. I recommend a 5 Watt part so it will run cool. The bypass cap is then 50uf. Th... 
Phono Cartridge IMD Measurements, Observations and a Question
Left unexplaind is why I can't alter the IMD very much. @kevemaher   The platter pad is a variable common to both arms and cartridges. When the platter pad is doing its job properly, if the volume is all the way down and with your head close t... 
Class A\B or D for summer months (vs Class A)
You can't beat.a class A for room heating during the winter! @fatdaddy2 Here in Minnesota even a class A high powered triode amp has no dent on the room temperature...  
Class A\B or D for summer months (vs Class A)
@tbac23 I listen to a class D amp year round. I'd put it up against any Pass Labs amp with no worries. It replaced a set of class A tube monoblocks and I've not had any reason to look back. But you might also consider that if your amp makes heat ... 
Phono Cartridge IMD Measurements, Observations and a Question
@kevemaher You might get a little device called an inverse RIAA filter to put at the output of your CD player. If you can reduce the level properly, you could test the phono section too. The one at the link provides some attenuation.      
Your journey with lower-watt tube amps -- Can a kit be good enough?
@hilde45 I'd go with a set of JJ EL84s before Sovteks or for that matter any Russian made version. Have the tubes been tested? If any are bad all bets are off. If you have level controls on your speakers it might be a good idea to run pink noise... 
Need a modern Class A monoblock, preferably half or compact chassis
Do you have any future plans to show your Class D amps paired up with speakers a bit larger and more demanding than Fritz' little gems? @decooney We showed with the Caladan open baffle speakers at AXPONA last year. We're not sure what the next ... 
Pass....Accuphase....or......
@southofdallas Where do you live? Our class D isn't the only you might consider, FWIW.