richardkrebs
Responses from richardkrebs
| Eminent Technology ET-2 Tonearm Owners Chris.Yes lifting off at record end is an interesting exercise after a few glases of fine NZ Pinot Gris.Which end for the trough? The one with the least amount of joins and material changes before we get to the cartridge. In my most humble opinion... | |
| Eminent Technology ET-2 Tonearm Owners Slaw.Wrong thread I know, but are you in a position to tell us about your "up coming tt project" ? | |
| Eminent Technology ET-2 Tonearm Owners Slaw."Variations in the degree of trueness"Totally agree. Since I had the luxury of building the arm and TT, almost concurrently, I could deal with these topics in real time. Getting accurate alignment when two components are brought together from... | |
| Eminent Technology ET-2 Tonearm Owners Hello.There has been some private questions about the design of my modified ET2.I have included here some more photos for those who may be interested. The target design brief was to- eliminate all unneccesary joints. - minimise different material ... | |
| Eminent Technology ET-2 Tonearm Owners Chris.I have added a multi spring test to the long agenda of things to try.Liked you cartoon. How true. Many thanks | |
| Eminent Technology ET-2 Tonearm Owners Chris and others. I can see how our discussion has become tedious for other readers. I apologize for this and will be more considerate moving forward. On a bit of a side path. What happens when a new better piece of gear is installed, say new spea... | |
| Eminent Technology ET-2 Tonearm Owners Dover says."....on an undamped standard ET with decoupled counterweight there is a resonant peak at 3 times the fundamental resonant frequency, and that this is reduced with fluid damping on a standard ET with decoupled counterweight."I say."At 3x... | |
| Eminent Technology ET-2 Tonearm Owners Thekong.The answer to your question regarding frequencies impacted by horizontal Fr is shown in the attached graph.From memory your Horiziontal Fr was around 5hz with the A-90. So substitute 5 for 1 on the x axis and scale up from there. At 15 Hz ... | |
| Eminent Technology ET-2 Tonearm Owners Dover.- The error you repeat, is saying that my arm exhibits a rise in bass response of 6-12db. I'm pretty sure that most of the readers here would not call 5Hz bass. I can't hear that frequency and my system certainly cannot reproduce it. The arm... | |
| Eminent Technology ET-2 Tonearm Owners Chris.Brilliant test idea you used for checking the smoothness of the pump air flow. I smoked my current pump running it at a higher pressure. Will definately be trying your idea out when it's replacement arrives. | |
| Eminent Technology ET-2 Tonearm Owners DoverI do wish you would stop repeating your fundamental error ad nauseum. BT measured a rise in response of 6-12 db at the resonant frequency. Say 3 to 8 hz. I don't call these frequencies bass.Bruce measurements show that this rise in response i... | |
| Eminent Technology ET-2 Tonearm Owners Dover.Secondary resonance? You mentioned this twice in your post 05-15-13. The frequency numbers you used were 3x Fr for this. The 3x Fr figure is the multiplier used by BT where he considers the amplitiude and phase anomolies above Fr have fallen... | |
| Eminent Technology ET-2 Tonearm Owners Dover.My calculation of weight delta was based on how much weight the air bearing has to carry. Not the horizontal effective mass. You voiced concern that I had taken it outside its load carrying capability. My calculation is correct since the bea... | |
| Eminent Technology ET-2 Tonearm Owners ChrisThe statement about the ET2 bearing was in relation to it being subject to the same rules regarding resonance , load carrying capability dynamic stiffness etc. Any problems due to higher mass will manifest themselves in linear air bearing des... | |
| Eminent Technology ET-2 Tonearm Owners The horizontal effective mass for a linear air bearing arm is the sum of the mass of the bits that move sideways.The ET2 reduces this mass by decoupling the counterweight. We all clearly understand this design feature. The benefit of this approach... |