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Old 27th January 2012, 12:22 PM   #1
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Exclamation IS 6N6P A DIRECT REPLACEMENT FOR ECC88CC ?

Hi
I have a pre-amp based on two siemens e88cc tubes , one for each channel.
I was wondering if the russian 6N6P is a direct replacement.
If not what kind of tweaks should i do to make it work in the place of ecc88 ?

Last edited by vmed_cha_gr; 27th January 2012 at 12:46 PM.
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Old 27th January 2012, 12:42 PM   #2
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There ain't a tube called ECC88CC. But there were ECC88's and E88CC's, from which the first ones were derived. The 6N6P is not even similar to one of them. The Russian equivalent to E88CC or 6922 is called 6N23P or 6N23P-EV.

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Old 27th January 2012, 12:43 PM   #3
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No, it is not a direct replacement. The pinout is the same, but the 6N6P consumes more heater current and the power transformer may not be up to it. There is also a difference in gain between the two, and optimal working points etc etc.

Best would be to provide us with a schematic of the circuit, than we can say what you could do to adapt the circuit.
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Old 27th January 2012, 01:20 PM   #4
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I guess this is why it sounded muddy when i put it for testing. I will try to make a diagram of the circuit my pre-amp uses & post it here. Thanks

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Originally Posted by ErikdeBest View Post
No, it is not a direct replacement. The pinout is the same, but the 6N6P consumes more heater current and the power transformer may not be up to it. There is also a difference in gain between the two, and optimal working points etc etc.

Best would be to provide us with a schematic of the circuit, than we can say what you could do to adapt the circuit.
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Old 28th January 2012, 08:53 AM   #5
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Finally i realized that it will need a lot of modification to put the Russian ones.
Better leave it this way.

Quote:
Originally Posted by ErikdeBest View Post
No, it is not a direct replacement. The pinout is the same, but the 6N6P consumes more heater current and the power transformer may not be up to it. There is also a difference in gain between the two, and optimal working points etc etc.

Best would be to provide us with a schematic of the circuit, than we can say what you could do to adapt the circuit.
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