| Author | Message | ||
| pierreyves
Senior Member Username: pierreyves Post Number: 626 Registered: 11-2006 |
Hi everybody, could you confirm if this tube is well for F1-X? http://www.jj-electronic.sk//pdf/ECC%20803%20.pdf best regards | ||
| bassclef29
Junior Username: bassclef29 Post Number: 17 Registered: 5-2006 |
Pierre-Yves, I have a JJ ECC83 in my F1-X. Recently, looking for a higher-gain tube, I made an inquiry to a reputable company called Eurotubes (http://eurotubes.com/). They recommended the JJ ECC803 and assured me it would fit within the same metal sleeve as the ECC83. But I do not have personal experience with the tube, so I cannot be certain. Hope this helps. --Joe in San Diego, California, USA | ||
| xlrogue6
Intermediate Member Username: xlrogue6 Post Number: 170 Registered: 8-2002 |
JJ ECC83s are one of the smaller diameter current production 12AX7/7025/ECC83 tubes. Electro Harmonics, TungSols, and Mullard reissues will probably be too large to fit inside the shield on an F1-X. Just tried all of these in a 70's Marshall with small diameter shield bases and the JJs were the only ones that fit. I highly recommend getting the Ruby tested 12AX7HG+, which is Ruby's nomenclature for the highest gain/lowest microphonics JJs out of the large batches they get. | ||
| pierreyves
Senior Member Username: pierreyves Post Number: 629 Registered: 11-2006 |
But they are ECC 803, not ECC83 ? Possible to compare size of your tubes ? Sorry, I don't have "pied à coulisse": http://www.temps-et-mesures.com/img/p/218-274-thickbox.jpg  Thank's | ||
| rraymond
Advanced Member Username: rraymond Post Number: 375 Registered: 6-2002 |
How about some data sheets for JJ tubes: ECC803: http://www.mif.pg.gda.pl/homepages/frank/sheets/163/e/ECC803.pdf ECC83S: http://www.mif.pg.gda.pl/homepages/frank/sheets/163/e/ECC83S.pdf Hope this helps! |
