What about channel separation? HT is common for left and right.phrarod said:... I'll drop the loading resistor to 33K from 39K.
Right.
This is a lineamp, isn't it? What is the need for first amplifying the signal and later on decreasing it? It feels like introducing more distortion than a simple voltage gain stage. If you need to drive long cables or a heavy load look at this setup.
This is a lineamp, isn't it? What is the need for first amplifying the signal and later on decreasing it? It feels like introducing more distortion than a simple voltage gain stage. If you need to drive long cables or a heavy load look at this setup.
I completely agree.
I'll build it and listen. You've optimized it completely, yes? Very interesting.
This is my first 5687 circuit. Hope I can make it musical otherwise I'm going to try a couple different ones and I'll give yours a go. Thanks.
Have you tried lowering the grid stopper value? Or using a small hand wound air core coil there?
You have capacitor out. I want to stay with trans out. I like the bandwidth. Think they'll be problems dropping a OT in place of the .47?
I'll build it and listen. You've optimized it completely, yes? Very interesting.
This is my first 5687 circuit. Hope I can make it musical otherwise I'm going to try a couple different ones and I'll give yours a go. Thanks.
Have you tried lowering the grid stopper value? Or using a small hand wound air core coil there?
You have capacitor out. I want to stay with trans out. I like the bandwidth. Think they'll be problems dropping a OT in place of the .47?
phrarod said:I completely agree.
I'll build it and listen. You've optimized it completely, yes? Very interesting.
This is my first 5687 circuit. Hope I can make it musical otherwise I'm going to try a couple different ones and I'll give yours a go. Thanks.
Have you tried lowering the grid stopper value? Or using a small hand wound air core coil there?
The circuit is optimized by Dick. The gridstopper / input capacitance allows for somewhat sloppy wiring, the most of us are guilty off. The whole story can be found here. It's a rather large download...
Looking at the circuit I think it's not handy to put an interstage transformer below the cathode. But if you wish, it's possible when you keep it at the right potential.
No, mine is in a wooden box.
If you want C-core output transformers I have two 5K:400 ohm units for sale. If memory serves right they're rated 50mA each. Transport will be expensive though (>3KG).
It's a rather big firm and audio has low priority. The waiting list at the moment is 12 weeks...
If you want C-core output transformers I have two 5K:400 ohm units for sale. If memory serves right they're rated 50mA each. Transport will be expensive though (>3KG).
It's a rather big firm and audio has low priority. The waiting list at the moment is 12 weeks...
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