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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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Tube DIY Asylum Do It Yourself (DIY) paradise for tube and SET project builders. |
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In Reply to: That so depends... posted by A on April 14, 2005 at 11:38:23:
Good points from Russ!I would add that a long-tailed pair doesn't have to have a negative source to work well. A large value resistor as the tail can be used with one end grounded, or I've even had excellent results with a simple cathode-coupled phase inverter (splitter is really not the proper term, as the signal is not ever split - inverter is technically more accurate).
I do recommend an AC balance control which is what Russ described (the pot across the cathodes). You can also put the pot across the plates, a la the Citation II. In either case, AC balance adjustment allows you to adjust for minimum distortion OR the best distortion pattern from the stage (my preference).
I guess now you see why "That so depends..."!
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Follow Ups
- Re: That so depends... - Jim McShane 11:19:16 04/15/05 (0)
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