herman

Responses from herman

I recently emailed John Atkinson of Stereophile
Sorlowski, I don't have to speak Polish to look at the pictures do I :>)Bbenn, very insightful on the lack of any educational content. As for Fremmer, I used to learn a lot from his column but lately all we get is news from the latest stereo sh... 
Have problems running a 8 ohm, 89 db speaker
Perhaps the electronics in the minisystem were designed with equalization built in to maximize the sound from the speakers that came with it and the speakers you are trying to use don't need it. The power should not be an issue. If anything, the n... 
Just got my new ASL Hurricanes....and.......
Pad means to reduce the level of the input signal, just like you would turn it down with a volume control, only the term is used when you want to reduce the level by a fixed amount. This is usually accomplished with a voltage divider and any compe... 
Just got my new ASL Hurricanes....and.......
I believe Kr4 is right. You have a problem with mismatched gains. I believe the sensitivity of the ARC was 1.9 volts in to get 100 watts out, and the ASL is 1.7 volts in to get 200 watts out. So for the same input you are getting more than twice a... 
MC Transformer or phono stage - help anyone?
When I had the Pass Aleph Ono I had a different turntable and cartridge than I used with the IO so it would be hard to give a definitive answer. If I had to characterize them, I would say the Ono was a bit tighter, quieter, and a little more analy... 
Record Cleaner Side Effects?
I have owned the Audio Advisor $200 model and now use a VPI 17. The VPI does a much, much, much better job of sucking up the fluid off of the record. No matter how long I went with the AA machine there was always a little moisture on the record wh... 
MC Transformer or phono stage - help anyone?
I have been researching this lately myself and have found that there are two camps with decidely different points of view (so what else is new in high end?). One side says that no matter how well designed and built a MC stage is, without a transfo... 
60 dB phono, 19 dB preamp, Enough gain?
thank you 
impedance mismatched ?
The input impedance is actually 137,000 ohms, which is typical for a tube amp. The high ratio of amp input to source output that you have is what you want in this situation.I suspect you have a broken connection inside your balanced cable at the c... 
MF A3-24 DAC owners please read
Please don't be offended if I am a bit suspicious of your claims, especially since you are trying to sell this combo in the classifieds. 
SET DIY compared to Wavelength or Commercial Brand
You are correct that it is relatively easy to build an SET amp. Plans and parts are readily available. The low parts count makes them fairly simple to construct and you will probably end up with a good sounding amp saving a lot of money in the pro... 
capacitor explanation?
Aball, your description of the 2 emitter resistors is exactly what I tried so poorly to explain. We are in complete agreement. As far as variations in re prime, I also agree that current has the most profound effect. The approximate formula re = 2... 
capacitor explanation?
If anyone is still following this thread:My previous responses were based on my memory so I decided to pull out an old friend, Malvino's book on Electronic Principles that I taught about 15 years ago. Aball's mention of re prime brings back fond m... 
capacitor explanation?
Now that I've thought about a bit, I'll back off on the statement about bypass caps not adding to stability. I now see where you are coming from. I will stand by my statement that the term "coupling capacitor" is a misnomer. The purpose of the cap... 
capacitor explanation?
Aball's explanation of coupling capacitors is good. Coupling is actually a misnomer since they are actually in the circuit to block DC as he points out.Output caps are also used to block DC but the part about output caps lowering impedance is wron...