Niiranen Posted August 19, 2022 Share Posted August 19, 2022 Hi Has anyone tried a tube roll on this Amp ?? Quote Link to comment Share on other sites More sharing options...
King Tut Posted August 19, 2022 Share Posted August 19, 2022 1 hour ago, Niiranen said: Hi Has anyone tried a tube roll on this Amp ?? What’s a tube roll? Quote Link to comment Share on other sites More sharing options...
Reggaebass Posted August 19, 2022 Share Posted August 19, 2022 I’ve tried a spam roll 😁 Quote Link to comment Share on other sites More sharing options...
Muzz Posted August 19, 2022 Share Posted August 19, 2022 1 hour ago, King Tut said: What’s a tube roll? Substituting different preamp tubes in order to change the characteristics of the amp; 12AU7 for 12AX7, Tungsol for JJ, that sort of thing. 1 1 Quote Link to comment Share on other sites More sharing options...
Niiranen Posted August 19, 2022 Author Share Posted August 19, 2022 1 hour ago, Muzz said: Substituting different preamp tubes in order to change the characteristics of the amp; 12AU7 for 12AX7, Tungsol for JJ, that sort of thing. Yes , correctly .... (N)OS / new .... I have had the Amp a week now ... Have a gig tomorrow , so have not tried yet ... Quote Link to comment Share on other sites More sharing options...
King Tut Posted August 19, 2022 Share Posted August 19, 2022 3 hours ago, Niiranen said: Yes , correctly .... (N)OS / new .... I have had the Amp a week now ... Have a gig tomorrow , so have not tried yet ... There’s three tubes in there iirc Quote Link to comment Share on other sites More sharing options...
King Tut Posted August 19, 2022 Share Posted August 19, 2022 I’ll be gigging mine in a couple of hours at the New Day festival. Been stuck on the bloody M25 for ages! Quote Link to comment Share on other sites More sharing options...
JapanAxe Posted August 19, 2022 Share Posted August 19, 2022 I would be wary of fitting a 12AU7 in place of a 12AX7 as the former ñ draw a lot more current, which can fry your anode resistor. Quote Link to comment Share on other sites More sharing options...
BassmanPaul Posted August 19, 2022 Share Posted August 19, 2022 (edited) That's not true in my experience. The 12AU7/ECC82 has a smaller amplification factor, µ, and has a greater anode dissipation but cannot draw more power replacing a 12AX7/ECC83. Edited September 16, 2022 by BassmanPaul 1 Quote Link to comment Share on other sites More sharing options...
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