"....The first failure he put down to simple component failure, but when the second amp fried very quickly after power on he suspected something else was the cause - I believed it to be his TOTL Cardas speaker cables which had a very high capacitance...."
Goertz ribbon speaker cables also have high-capacitance that can be problematic to the degree that they offer a 'R/C Link' to combat amplifier instability issues. The R/C Link (aka, Zobel Network) is a resistor in series with a capacitor that is placed across the amplifier output to keep the demons at bay.
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Originally patented by Polk 30ish years ago.
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Any way you slice it, Noel Lee has a lot to answer for. |
mikepowellaudio88 posts11-18-2019 12:55amAtDavid and Dimora , Mi Casa es Su Casa for anything HiFi related. Its no trick of marketing , Im not smart enough for that. I’m sick of hearing this back and forth perpetual argument. I want to abolish it. I just offered anyone lets do this .. did you see how much interest there was in stopping the argument and getting to the bottom of it. ? Clearly nobody will come from overseas, that never crossed my mind. So you 2 are perfect, you guys dont know me and I will state for the record I dont think I know either of you, but based on moniker I dont know you guys.. So do either of you two have any $1000 plus power cords ? if so , we’ve got a shootout. If not, then you two are Audiogon forum users that can represent the AG Group for this thread. Keep in mind, I am a straight shooter. if something sounds better than my cable I will acknowledge it, furthermore if we become friends while you are here you must maintain an honest opinion even if you think Im a great guy and the other cable sounds better. Now if there is no $1K plus cable you can bring, then I need to know if you each are power cord believers or not, if you are , then come over any ways and we can listen to 3D Holographic imaging. Its a good reference point from which to judge other rigs, and its always fun for me to experience it in other peoples rigs because it is elusive. If you dont know what you think or better yet are a non believer that is OK with being converted to believer (if its truly heard) then come on over and Ill prove power cords work an a big way. There are some folks not willing to be converted , and that bias makes a closed mind, so its futile at that point. Every Friday is HiFi Fridays around here. I am in Smyrna by the new Battery Park if you google my username or just go to my username.com youll find my phone number to call and chat.. ame.com youll find my phone number to call and chat..
atdavid432 posts11-18-2019 11:23amI am there for work every 8 weeks approximately, but no guarantees on a Friday. I am certainly in. I don’t think it matters if me or Dimora is a believer or not, as long as you are. If you can pick your cables out blind (or between a basic shielded cable and yours) then you have proved they make a difference. I have a strong suspicion this exercise will go nowhere. No such meeting will ever happen. Prove me wrong. |
atdavid432 posts11-20-2019 10:10am"Originally patented by Polk 30ish years ago."
Matt Polk did indeed patent the use of Zobel networks in loudspeakers. That was in response to power amps self-destructing when using Polk's high-capacitance Cobra speaker cables. The concept of Zobel networks, however, was developed by Otto Zobel of Bell Labs in 1923. |
