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Post by elorens on Dec 6, 2022 14:34:41 GMT 12
I have a recently-acquired Antone Cadet, the forerunner to the Bell Colt. I have a circuit from Steve’s very useful website. This one, however, has a 6AR7GT in it, which is not shown in the circuit. This rather unusual valve was apparently only made in Australia, and has a lead coating. Unfortunately this one has the glass envelope broken above the metal coating.
Does anyone have experience of this model? Was there a version which included this valve, and if so is the circuit different to Steve’s? Finally, and long shot, perhaps, does anyone have a 6AR7GT they could part with? Thanks all, Lawrence
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Post by Peter Walsham on Dec 6, 2022 16:36:03 GMT 12
Hi Lawrence
The EBF32 is a direct equivalent to the 6AR7GT, but they might be just as hard to come by. Sorry, I don't have either in stock. However, I have used a 6B8(G)(or GT) in its place with good results. Note that the 6A8 will need several connection changes to the octal socket though. The 6AR7GT is a high gain valve, where the 6B8 would probably be best described as a medium gain valve.
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Post by elorens on Dec 6, 2022 22:02:05 GMT 12
Hi Lawrence The EBF32 is a direct equivalent to the 6AR7GT, but they might be just as hard to come by. Sorry, I don't have either in stock. However, I have used a 6B8(G)(or GT) in its place with good results. Note that the 6A8 will need several connection changes to the octal socket though. The 6AR7GT is a high gain valve, where the 6B8 would probably be best described as a medium gain valve. Thanks, Peter. I found an EBF32, luckily, so will try that. I will need to rewire the octal base a bit first. I have now seen two conflicting references to the 6AR7GT: one says the metal shield is lead, the other says zinc. Given its weight, zinc seems more probable. Cheers, L. |
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Post by Peter Walsham on Dec 7, 2022 8:21:02 GMT 12
Good morning Lawrence
Yes, you're right about the need to make socket wiring changes to fit the EBF32. I hadn't compared them side by side when I wrote yesterdays message. As it happens, the 6B8 uses the same socket connections as the EBF32, so a 6B8 could probably be used as a 'plan B'.
Peter
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Post by Richard on Dec 7, 2022 12:45:04 GMT 12
Im pretty sure Gary (twenty_b on trademe) from nelson had one for sale a short time ago. You could try messaging him, he may have more?
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Post by elorens on Dec 7, 2022 14:28:51 GMT 12
Good morning Lawrence Yes, you're right about the need to make socket wiring changes to fit the EBF32. I hadn't compared them side by side when I wrote yesterdays message. As it happens, the 6B8 uses the same socket connections as the EBF32, so a 6B8 could probably be used as a 'plan B'. Peter Thanks, Peter. Not sure I have a 6B8, so fingers crossed the EBF32 does the job. L |
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Post by elorens on Dec 7, 2022 14:29:48 GMT 12
Im pretty sure Gary (twenty_b on trademe) from nelson had one for sale a short time ago. You could try messaging him, he may have more? Thanks, Richard, good suggestion. L |
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