* Started getting intermittent static discharge noises from the Dyna ST 70s. Occurs after about 15 to 30 minutes of warm up time.
* Issue characterized as if a build up of electricity is occurring and then intermittently discharges and sounds like a loose connector through the speaker.
* Spoke with Mike and his initial reaction was that the 7199 tubes were probably failing.
* I purchased a pair of NOS RCA 7199s from Tubesandmore.com
* Received and installed 7199s this week. Intermittant discharge still occurring.
* Swapped in my Audio Research SP 14 and Conrad Johnson PV 1 to test the Dyna ST 70s. Intermittant discharge still occurring.
* To ensure the Audio Research SP 14 and Conrad Johnson PV 1 were not introducing the discharge, I put the SP 14 and PV 1 in front of my Audio Research D115 solid state amp. No intermittent discharge occurring.
* Spoke with Mike today (9/5/09). He said drop them off this afternoon and let's solve the problem.
* Issue characterized as if a build up of electricity is occurring and then intermittently discharges and sounds like a loose connector through the speaker.
* Spoke with Mike and his initial reaction was that the 7199 tubes were probably failing.
* I purchased a pair of NOS RCA 7199s from Tubesandmore.com
* Received and installed 7199s this week. Intermittant discharge still occurring.
* Swapped in my Audio Research SP 14 and Conrad Johnson PV 1 to test the Dyna ST 70s. Intermittant discharge still occurring.
* To ensure the Audio Research SP 14 and Conrad Johnson PV 1 were not introducing the discharge, I put the SP 14 and PV 1 in front of my Audio Research D115 solid state amp. No intermittent discharge occurring.
* Spoke with Mike today (9/5/09). He said drop them off this afternoon and let's solve the problem.