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23rd April 2010, 09:00 PM
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#1 |
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diyAudio Member
Join Date: Apr 2010
Location: ALBUFEIRA ;PORTUGAL
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Phono preamp with c/em2
HI !
I was looking to some of my old tubes and i found a few C/EM2 from Telefunken,and i had a crazy idea of making a phono preamp with them using the triode section of this very old magic eye! but i dont know if this triode has enough gain to do the job ! I did not find this data in the web! Maybe someone could give me a help! what is the gain of this triode? Thanks ! |
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23rd April 2010, 09:46 PM
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#2 |
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diyAudio Member
Join Date: Feb 2009
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datasheet
It doesn't look nearly as bad as I would have guessed from its intended role. It has mu of 50 and I'd really be interested to hear how it sounds with CCS load. Others will chime in regarding phono portion of your idea, I never dealt with those before.
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mod verb, transitive /mod/ to state that one is utterly clueless about the operation of device to be "modded" and into "fixing" things that are not broken; "My new amplifier sounds great so I want to mod it." |
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24th April 2010, 09:45 AM
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#3 | |
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diyAudio Member
Join Date: Apr 2010
Location: ALBUFEIRA ;PORTUGAL
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Quote:
I have made a few tests and this triode seems to be very linear! Making a phono preamp with this tube, we also have a VU METER! How about that?i When i finish this project,i will send report with photos and test results! Thank you! |
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24th April 2010, 10:20 AM
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#4 | |
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diyAudio Moderator Emeritus
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Quote:
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24th April 2010, 11:37 AM
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#5 |
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diyAudio Member
Join Date: Feb 2009
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Excellent. I suggest you have a look at the tube phono preamp article mentioned in most recent DIYaudio newsletter. Author elaborates really well on all aspects of development, I read the article through in first ago even though I don't own a single record and mostlikely never will have any need to play them (interesting explanation is provided on the subject of noise in high amplification factor circuits). Here's the link:
His Master's Noise: A Thoroughly Modern Tube Phono Preamp
__________________
mod verb, transitive /mod/ to state that one is utterly clueless about the operation of device to be "modded" and into "fixing" things that are not broken; "My new amplifier sounds great so I want to mod it." |
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