clio09

Responses from clio09

Lightspeed Attenuator - Best Preamp Ever?
George, You, I, and your tube gurus will just have to agree to disagree on this one. I think there could be more to this than we know and if so it may give you and some of the tube gurus the information needed to fully understand the circuit desig... 
Lightspeed Attenuator - Best Preamp Ever?
CF-080 is single ended only. The designer, in addition to well informed opinions on impedance matching, implements single ended circuits to take advantage of short signal paths and to keep things simpler. 
Lightspeed Attenuator - Best Preamp Ever?
I have just received some information regarding the output impedance of the Concert Fidelity CF-080 that should put the discussion to rest. According to the designer, the 33k ohm output impedance is an incorrect assumption. In addition to the tube... 
Lightspeed Attenuator - Best Preamp Ever?
At full price the LSA isn't going to break the bank. It's a very low risk proposition. That's one reason I like it so much. Of course that it works optimally in my system is another. 
Lightspeed Attenuator - Best Preamp Ever?
Just ran into this thread. Seems another LDR attenuator has been making the rounds as a DIY kit. There is a balanced version available as well. Not sure technology wise what the differences are with the LSA, but thought some of you here might be c... 
Lightspeed Attenuator - Best Preamp Ever?
George, yes I saw that review and was aware of the other information. As I stated in my previous post, amps input impedance is 47k ohms. What I am having a difficult time with is why the designer would build a preamp circuit with 33k ohm output im... 
Lightspeed Attenuator - Best Preamp Ever?
33k ohm output impedance is rather high, especially given that the Concert Fidelity amps have an input impedance of 47k ohms. Is that 33k ohm constant or at a specific frequency or perhaps a range? Now I know Masa Tsuda personally and have been wo... 
Lightspeed Attenuator - Best Preamp Ever?
This is also very important. An active preamp will be needed if the amp's voltage need is higher then the source's output voltage.I used to think this too until I tried my LSA with my Atma-Sphere S-30. Source = 2V and S-30 = 2.8V - nearly 6V depen... 
Lightspeed Attenuator - Best Preamp Ever?
One correction to Agear's very interesting post. The Truth is an active buffer, not a passive. To answer his question, I am not a betting man but in a blind test between the Truth and LSA I would bet I could pick them out. This is not to say my he... 
Lightspeed Attenuator - Best Preamp Ever?
Maybe Arthur's been reading this thread;)I had the pleasure to work the CF rooms at 3 shows now and will be there at RMAF this year with them. I have probably spent close to 150 hours listening to those components as a system with a variety of spe... 
Lightspeed Attenuator - Best Preamp Ever?
Sipping a martini right now in First Class. Life's looking good at 30k feet. 
Lightspeed Attenuator - Best Preamp Ever?
According to Ralph a line stage has 4 functions:1) control volume2) select input3) add any needed gain4) control the interconnect cable at its outputThe last of these is the critical, as well as, the least understood one in his opinion. Ralph feel... 
Lightspeed Attenuator - Best Preamp Ever?
Finally the truth... 
Lightspeed Attenuator - Best Preamp Ever?
I agree with Paul. I have found George to be very passionate about what he is doing. I don't necessarily think he is the best communicator (and he has admitted such to me), and he can go overboard at times, but I think I know enough about people a... 
Lightspeed Attenuator - Best Preamp Ever?
Would be nice to have a First Watt Lightspeed/B1, with the ability to toggle between straight and buffered (when needed), along with multiple inputs (3?)yep;)I think the XLR is a bit of a reach though. Alas...