rosgr63
Headphoneus Supremus
BTW the ECC33 shown just above, under amp test now, has the code 1324 L9, so it's probably December 1949
ECC33/ECC35 Tube Addicts
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Quote:
Feck off!
It largely boils down to this: Cannot see the getter. How's the lighting in this photo? Is that black or grey? Bloody impossible to tell. Feck this!
Feck off!
It largely boils down to this: Cannot see the getter. How's the lighting in this photo? Is that black or grey? Bloody impossible to tell. Feck this!
Quote:
Yep. Do you happen to have the codes on the yellow prints? I've read that yellow (≈ gold) was used in 1970 to celebrate the 50th anniversary year of Mullard (the company). But perhaps there were other times.
Yep. Do you happen to have the codes on the yellow prints? I've read that yellow (≈ gold) was used in 1970 to celebrate the 50th anniversary year of Mullard (the company). But perhaps there were other times.
rosgr63
Headphoneus Supremus
Oskari, these test 120-130% above the average value and sound wonderful.
They were made in 1967, matched pair with code: 5K2 R7J3
They were made in 1967, matched pair with code: 5K2 R7J3
Quote:
Thanks! Are you sure about the R because that's significant; these would have been made at Mitcham!
Thanks! Are you sure about the R because that's significant; these would have been made at Mitcham!
rosgr63
Headphoneus Supremus
Hi Oskari, yes I am.
BTW They do sound very very good.
BTW They do sound very very good.
Quote:
OK. That's a fairly big change! Of about 300 kilometers.
Off topic: So does the TS 6F8G FP & TS 7236 pairing. Sweet yet punchy. Nothing missing, nothing overblown.
OK. That's a fairly big change! Of about 300 kilometers.
Off topic: So does the TS 6F8G FP & TS 7236 pairing. Sweet yet punchy. Nothing missing, nothing overblown.
dminches
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Quote:
Grey staggered plates. D getter.
What else would you like to know?
Feck off!
It largely boils down to this: Cannot see the getter. How's the lighting in this photo? Is that black or grey? Bloody impossible to tell. Feck this!
Grey staggered plates. D getter.
What else would you like to know?
Quote:
It was a general commentary on photos online. Your photos were positively clear.
It was a general commentary on photos online. Your photos were positively clear.
lojay
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Are ECC33's direct substitutes for 6SN7? Thanks!
rosgr63
Headphoneus Supremus
The ECC33 has the same heater requirements as a 6SN7.
But it has a much higher μ at 35 compared to 20 for a 6SN7 and a resistance of 9.7KΩ compared to 7.7 KΩ of a 6SN7.
But it has a much higher μ at 35 compared to 20 for a 6SN7 and a resistance of 9.7KΩ compared to 7.7 KΩ of a 6SN7.
lojay
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Thanks! I better ask Jack Woo whether it will fit in my WA5 then...
gurubhai
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Hi guys,
Can any of you confirm if these tubes are actually an ECC33, never seen pics of a version with metal base.
rosgr63
Headphoneus Supremus
To me they look like mislabeled B65's, great tubes.
gurubhai
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^Thanks.
I did a bit of digging and found this auction http://www.ebay.com/itm/-/190917447473?
where the seller seems to think that these tubes are B65 indeed.
Not a bad haul then!
I did a bit of digging and found this auction http://www.ebay.com/itm/-/190917447473?
where the seller seems to think that these tubes are B65 indeed.
Not a bad haul then!
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