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Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

Soekris DAM 1121 with Tube-I-zator
Soekris DAM 1121 with Tube-I-zator
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Old 10th January 2019, 08:29 AM   #1
dewdrop is offline dewdrop  Singapore
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Default Soekris DAM 1121 with Tube-I-zator

Has anyone tried done this before? I am trying to figure what is the Rk, I/V resistor values as well as tubes to use. Thanks in advance
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Old 10th January 2019, 09:08 AM   #2
TNT is offline TNT  Sweden
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No i/v for 1121!

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Old 10th January 2019, 10:39 AM   #3
dewdrop is offline dewdrop  Singapore
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oh! So i just put a jumper wire for the component?
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Old 10th January 2019, 11:00 AM   #4
TNT is offline TNT  Sweden
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Wouldn't that mean that you short the output of the DAM?

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Last edited by TNT; 10th January 2019 at 11:22 AM.
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Old 10th January 2019, 11:59 AM   #5
dewdrop is offline dewdrop  Singapore
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What value would you suggest then? Sorry but I did not refer to the schematics.
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Old 10th January 2019, 12:17 PM   #6
Boydk is online now Boydk  Denmark
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Forgive me, but I think, you´ve misunderstood something. I/V resistor is used on i.out dacs (current output like TDA1541). The Soekris koncept is a v-out dac with output on a line level, and as so doesn´t need any amplification. If you still insist on playing with tubes, then just do a cathode follower on the output to reduce the out imp. further. Since this has no gain, it doesn´t really matter what tube you use. The output capacitor will have bigger influence on the sound characteristics.

Last edited by Boydk; 10th January 2019 at 12:20 PM.
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Old 10th January 2019, 02:21 PM   #7
dewdrop is offline dewdrop  Singapore
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Thanks for the enlightment. I did not do my homework on this then, let me research more and come back on this!
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