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Post by joey808 on Aug 11, 2014 17:13:37 GMT -6
I got a friend who has one and wants to replace the tube on it. Any recommendations on a good tube replacement? your help would be much appreciated. Thanks  |
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Post by kidvybes on Aug 11, 2014 17:40:55 GMT -6
...that is ECC83, correct?...that's a 12AX7 tube...I generally swap out 12AX7s to a good quality 12AT7 (like a late 50's GE 6201) or 12AY7 (50's GE 6072) for use in a microphone...12AX7 have high gain/mu ratings (100) and are prone to audible noise and distortion...the 12AT7 is rated 60 and the 12AY7 is rated 44, so you'll need a bit more gain from the mic preamp, but you should hear a cleaner signal with a good quality (low-noise) tube... ...if he does decide to stay with an ECC83, Telefunken is highly rated (and expensive) BUT there is an abundance of counterfeit Tele ECC83 tubes on the market...more info here: www.audiotubes.com/12ax7.htm |
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kcatthedog
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Post by kcatthedog on Aug 12, 2014 6:52:53 GMT -6
talk to christian at proaudiotubes; a very good source for fully tested and burned in NOS tubes
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Post by sinasoid on Aug 12, 2014 14:27:07 GMT -6
...that is ECC83, correct?...that's a 12AX7 tube...I generally swap out 12AX7s to a good quality 12AT7 (like a late 50's GE 6201) or 12AY7 (50's GE 6072) for use in a microphone...12AX7 have high gain/mu ratings (100) and are prone to audible noise and distortion...the 12AT7 is rated 60 and the 12AY7 is rated 44, so you'll need a bit more gain from the mic preamp, but you should hear a cleaner signal with a good quality (low-noise) tube... ...if he does decide to stay with an ECC83, Telefunken is highly rated (and expensive) BUT there is an abundance of counterfeit Tele ECC83 tubes on the market...more info here: www.audiotubes.com/12ax7.htm12AT7 has a considerably lower plate resistance than its 12AX7 counterpart. Not a direct replacement, but it often works without problems. Just make sure you know your specs! I'd recommend JAN tubes for their durability and stability. |
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Post by kidvybes on Aug 12, 2014 19:35:11 GMT -6
I'd recommend JAN tubes for their durability and stability. ...Joint Army Navy tubes, exactly...that's why I suggested a 6201 (industrial/military-grade 12AT7) or 6072 (industrial/military-grade 12AY7)... ...for standard 12AX7 replacement, the 12AX7WA, 7025 or 5751WA are military-grade options... |
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Post by joey808 on Aug 13, 2014 1:48:24 GMT -6
Thank guys! I appreciate your feedback.
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