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ramtubes

Responses from ramtubes

Does anyone care to ask an amplifier designer a technical question? My door is open.
@radiointerference  Hello Roger, thanks again for this opportunity seeing you worked for Harold Beveridge , I have two questions, 1). I have a pair of Beveridge 2SW's with a panel that has gone south. I am looking to make a jig to tension the myl... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
@michaellent I want to learn about amplifiers Hi. What would you like about amplifiers? They are my favorite subject and life's work. Did you check out the YouTube videos and Burning Amp?Realizing early on that the applications in the RCA and oth... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
the velocity of propagation of the signal (versus the velocity of the actual electrons) is determined by the dielectric or insulation material that the electromagnetic wave is predominantly traveling through. I would like to see some proof of t... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
http://www.audiosystemsgroup.com/TransLines-LowFreq.pdfThe last paragraph of this 3 page paper dealing with transmission lines admits that we are not in transmission line territory at audio frequencies..     Electrical Wavelength at Audio Frequen... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
@rollintubes  I am sold on tubes for analogue audio but am confused by all of the information on power. I see from many posts that tube power need not be very high or as high as the speaker manufacturer claims as a requirement, i.e. a 200 WPC SS ... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
Roger,            Thanks for this great thread! It is one of the best threads I have ever read on this website! Your time educating us non-technical prople is greatly appreciated. I still own the original Beveridge Model 2׳s and have a couple qu... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
 In an electronic circuit, when current flows through a resistance, voltage is developed. Most would say when a voltage is applied aross a resistance a current flows. An ampifier supplies a voltage and the current is determined by the load. Ter... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
For a technical look at Bi-Wiring, please see  http://ielogical.com/Audio/CableSnakeOil.php/#BiWire Please note that these are Spice models and not actual system measurements. He was doing fine till he got here on #1..     To go back to our mar... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
@tinear   Richard... I am enjoying the heck out of this forum and am learning quite a lot.  I am interested in your thoughts and insight into Bob Carver’s latest tube amps I heard the amps were very light weight, had tiny transformers in those b... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
In my experience, it is not a myth and it does incrementally improve the sound quality. My understanding of the technical reason is it reduces the negative affects of the crossover by (almost) directly connecting the amplifier to the drivers.The b... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
@oem  This thread is going way to fast for me.. Way back, power cables was mentioned.. For those that said that they don't make a difference, does speaker cables and interconnects make a difference ? I felt that if the latter two makes a differen... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
@ffzz My speakers are 93db sensitive (1w/1m) with 8 ohm impedance (7ohm min).With a listening distance of 8 feet, it seems 15w will be more than enough to produce 100db or so loudness that Symphonic music peaks into from time to time.Assuming 100... 
The death of an amplifier
Keep the amp cool as possible. Only power on when you are listening. Blow out the dust now and then. Heatsinks must be sparkly clean, dust reduces cooling. I have severeal receivers that are 35 years old, Used daily, no repairs. no recaps. I find ... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
@ffzz4 A couple tech questions for Roger. Others please chime in too.Is it possible to estimate how much amp power will be enough (i.e. never clipping) simply based on speaker specs (assuming they are correct), and listening habit/situation (i.e. ... 
Does anyone care to ask an amplifier designer a technical question? My door is open.
@ieales   Depends on the circuit design. A lot of pro gear has IC balanced outputs that can short either leg to Gnd and the output acts single ended, driving no current into the shorted leg. iesles Please elaborate. I don't how the shorted lead...