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Fender Bassman RI rörsnack
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KingsHighway
Joined: 10 Dec 2009, 23:17
Posts: 1803
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 Fender Bassman RI rörsnack har en bassman som jag är väldigt nöjd med, men funderar lite över förstegsrören och slutrören.
Nu har jag JJ6v6 i slutrören i preamprören vet jag inte vad det sitter förutom 12ax7
om jag vill kunna skjuta på in i förstärkaren av helvete, skulle ett ef86 rör ta det bättre? o isåfall i vilken position.
finns det andra tips på vilka rör man skulle kunna prova i försteget.
om jag spelar rätt in och spelar på nästan max så får man sån där cool black crowes, Keith Richards toner, men om man skulle vilja ha lite mer sammanhållen typ David Grissom vad skulle man kunna göra då?
rör, andra högtalare eller vad?
tacksam för tips...
nu handlar det om vad man kan göra i enklare grejer, jag ska inte in o tråckla inne i stärken förutom eventuellt byta rör och biasjustera..
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| 09 Mar 2010, 18:22 |
 
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Ocku
Joined: 27 Dec 2007, 13:58
Posts: 2357
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KingsHighway wrote:
om jag vill kunna skjuta på in i förstärkaren av helvete, skulle ett ef86 rör ta det bättre? o isåfall i vilken position.
Du kan inte slänga in en ef86 i en bassman utan att löda om kretsen. ------ Dom låter alla lika
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| 09 Mar 2010, 18:57 |
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KingsHighway
Joined: 10 Dec 2009, 23:17
Posts: 1803
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Ocku wrote: KingsHighway wrote:
om jag vill kunna skjuta på in i förstärkaren av helvete, skulle ett ef86 rör ta det bättre? o isåfall i vilken position.
Du kan inte slänga in en ef86 i en bassman utan att löda om kretsen. ------ Dom låter alla lika ok, så det är inte ett rör typ som ett 12a7 som man tydligen ska kunna prova utan problem. ok då vet jag det.
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| 09 Mar 2010, 19:17 |
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rudmark
Joined: 27 Dec 2007, 21:55
Posts: 2892
Location: Uppsala
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Tweed Bassman 5F6A
First tube is preamp, 12AY7 is specified. 6072A may also be used. A low-noise, low-microphony 5751, 12AX7, or 7025 is also usable, though they will have more voltage gain and will change the sound of the amp considerably.
Second tube is a 12AX7. This is the driver. Any 12AX7 or 7025 is usable here--it need not be low-noise or low-hum, nor does it need to be tested for microphony.
Third tube is a 12AX7. This is the phase inverter tube. This tube need not be low-noise or low-hum, nor does it need to be tested for microphony. It must have good quality heater insulation. 12AX7s or 7025s are suitable. Good NOS 12AT7s may also be used here. We understand that some technicians recommend Ei or JJ ECC83s for this duty.
Power tubes are a pair of 6L6 (5881s were originally specified). Recommend using matched pair of 6L6GCs or NOS 6L6Gs, GAs, GBs, or WGB, or 5881s. Current TAD 6L6WGC-STR and re-issue Tung-Sol 5881 are the best option in place of NOS tubes. Also acceptable are NOS JAN-Philips 6L6WGB, and NOS types 7581A, KT66 or 350B. NOS metal 6L6s run too hot. DO NOT use other types.
Rectifier tube is 5AR4, GZ34. This tube should be of good quality. 5R4 types may also be used, although the amplifier will sound different. Do not attempt to use 5Y3, 5V4 or 5U4 types.
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| 09 Mar 2010, 19:55 |
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KingsHighway
Joined: 10 Dec 2009, 23:17
Posts: 1803
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rudmark wrote:
Tweed Bassman 5F6A
First tube is preamp, 12AY7 is specified. 6072A may also be used. A low-noise, low-microphony 5751, 12AX7, or 7025 is also usable, though they will have more voltage gain and will change the sound of the amp considerably.
Second tube is a 12AX7. This is the driver. Any 12AX7 or 7025 is usable here--it need not be low-noise or low-hum, nor does it need to be tested for microphony.
Third tube is a 12AX7. This is the phase inverter tube. This tube need not be low-noise or low-hum, nor does it need to be tested for microphony. It must have good quality heater insulation. 12AX7s or 7025s are suitable. Good NOS 12AT7s may also be used here. We understand that some technicians recommend Ei or JJ ECC83s for this duty.
Power tubes are a pair of 6L6 (5881s were originally specified). Recommend using matched pair of 6L6GCs or NOS 6L6Gs, GAs, GBs, or WGB, or 5881s. Current TAD 6L6WGC-STR and re-issue Tung-Sol 5881 are the best option in place of NOS tubes. Also acceptable are NOS JAN-Philips 6L6WGB, and NOS types 7581A, KT66 or 350B. NOS metal 6L6s run too hot. DO NOT use other types.
Rectifier tube is 5AR4, GZ34. This tube should be of good quality. 5R4 types may also be used, although the amplifier will sound different. Do not attempt to use 5Y3, 5V4 or 5U4 types.
ok, när dom skriver att andra rör typ 6v6 inte ska köras vad baserar dom det på`? jag har 12ax7 i alla 3 preamprören, kanske ska prova då med en 12ay7 i första positionen, vart tog du detta ifrån?
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| 09 Mar 2010, 20:02 |
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Conviction
Joined: 28 Dec 2007, 14:53
Posts: 490
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| 09 Mar 2010, 20:30 |
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Hannu
Joined: 21 Apr 2007, 19:27
Posts: 844
Location:
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| 09 Mar 2010, 20:47 |
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