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In Reply to: RE: First stage phono preamp transformer output coupled posted by KevinC on February 13, 2017 at 04:41:16:
Hi Kevin,
I tried to simulate with LTspice the input stage with E810F.
With resistive RL=10k provide excellent performances, however with LL1671 4:1 coupled to output load of 600ohm (lcr riaa network), appears that the low frequency response suffers an attenuation from 100 Hz...
I suppose that 600ohm on the secondary is about 10k reflected on the primary.
I wrong anything or do you think there is some other more suitable transformer to use?
I tried to replace it with the LL1692 and everything in spice seems ok, but obviuosly this may not work with 30mA bias...
Thank you.
Alberto.
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Follow Ups
- RE: First stage phono preamp transformer output coupled - d888sp4@gmail.com 08:43:27 03/06/17 (4)
- RE: First stage phono preamp transformer output coupled - KevinC 16:54:32 03/06/17 (3)
- RE: First stage phono preamp transformer output coupled - d888sp4@gmail.com 00:27:30 03/07/17 (2)
- RE: First stage phono preamp transformer output coupled - KevinC 17:34:19 03/08/17 (1)
- RE: First stage phono preamp transformer output coupled - d888sp4@gmail.com 23:57:32 03/08/17 (0)