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Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Salas DCG3 preamp (line & headphone)
Salas DCG3 preamp (line & headphone)
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Old 15th January 2019, 04:17 PM   #3431
Salas is offline Salas  Greece
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Salas DCG3 preamp (line & headphone)
Quote:
Originally Posted by PKI View Post
Thank you for such a detailed review! I am debating which one to get. ATH-50 are in my list as well as I am listening music at work and really afraid SH will be too loud for other people even nobody seats next to me.
I don't like the ATH-50 that much I must confess
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Old 18th January 2019, 09:12 AM   #3432
jimk04 is offline jimk04  United Kingdom
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I managed to get a pair of dual secondary trafos for this project. They measure 25.8v unloaded. They were billed as 19v. Will the drop under load make them suitable?
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Old 18th January 2019, 09:54 AM   #3433
Salas is offline Salas  Greece
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Salas DCG3 preamp (line & headphone)
They should come down around nominal when loaded. You could pre-test that if you would load each secondary with a 100 Ohm 10W power resistor and measure their AC output again.
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Old Yesterday, 12:27 AM   #3434
PKI is offline PKI  United States
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Salas DCG3 preamp (line & headphone)
Building my third preamp, thank you Salas for such a great design :-). This time I will be using UBIB in dual mono configuration in PSU. What would be the best value for the limiter R1 if I am planing to bias DCG3 @ around 150mA? Thanks!
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Old Yesterday, 05:22 AM   #3435
vgeorge is offline vgeorge  Greece
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Salas DCG3 preamp (line & headphone)
You could use 1.8R to 2.0R for 270 to 300 mA consumption on the UBIB (depending on the mosfets)
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