ndevamp
Responses from ndevamp
| 12BZ7 ///12AX7 7308 is a 6dj8 equivalent, not 12au7.The Defy 7 has the 12au7 as input tube, the 12ax7 is the driver tube. The extra current capability of a 12bh7 is unused in this circuit. Same for a 12bz7 in place of the 12ax7 at the same operating current. The... | |
| 12BZ7 ///12AX7 Just looked at the Defy 7 schematic, audio section. It looks like the 12bz7 would work ok for the audio circuit voltage settings. BUT there is a danger it will draw too much heater current from the filament winding, along with the E80CC, which als... | |
| 12BZ7 ///12AX7 The 12bz7 is basically a double 12ax7, ie. Each 12bz7 triode is similar to two 12ax7 triodes in parallel. It draws double the heater current of a 12ax7 (600mA vs 300mA) and has twice the transconductance. It has a gain of 100, like the 12ax7. Not ... | |
| Hana SL or ML? It’s most likely system dependent, so I’m not totally surprised you like yours set at 400 ohms. On my system 390 ohms made it sound a little clamped down, probably with better focus and more neutral overall, but I couldn’t go back from 2.2k on my ... | |
| Best Tchaikovsky’s 6th Symphony Recording +1 for the Pierre Monteux/Boston Symphony on Living Stereo.But will give the Mravinsky a listen! | |
| Hana SL or ML? The NZ forum I subscribe to have been comparing the SL and ML, the ML wins in terms of sonics apparently. I haven’t experienced the ML in my own system though. I have an SL here and it definitely likes cartridge loading above 2k ohms to open out t... | |
| Headphone amp as pre amp The RM-10 was designed by Roger Modjeski, not your average engineer. He gets higher power out of the EL84 by using higher voltage and less current through the tube. It’s proven to be very reliable and the amp has a good following. I owned one for ... | |
| Headphone amp as pre amp Using a headphone amp as a line preamp should present no problems and could make the circuit work better anyway. Since the load impedance of the headphone is removed for use as a line stage it’s circuit should then work with lower distortion.For p... |