Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8. Page 9. Page Page Page Page Page Page Page The thin glass tube envelope is 20 mm in diameter and, excluding the B9A base pins, is 45 mm tall. References: Datasheet &. Type E88CC was first introduced. Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8.
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This may help you more than changing tubes. Sorry, only one tube left.
Is your ECC88 microphonic? This was told to me by a retired Telefunken Ulm Employee, so I think this is very reliable information. Dataasheet Uf Test with Voltmeter between Pin 4 and 5. This is the reason why JAN tested tubes are so often agvailable as commercial tubes also!! Left tube on the picture. Check also next item, below here.
Anyway, not reading the datasheet may work with most tubes, but not with all. Made on Philips machines. Strangely so, but I see it over and over again.
dataeheet Also read here Uh-k. Lucky on internet auction sites. Only do these measurements inside your amplifier, e88c you have experience with this. Here is a Link to all test reports. This is not possible for the most wanted part numebrs.
So with them, what you pay is what you get. This is a very critical one, and can cause a good tube to get defective, or give hum, sparks or other noise, when exceeded.
TDSL Tube data [E88CC]
Elektronska Industri, former Yugislavia. Tube is offered as used, but datasehet be new. Well, I think experience and detailed product knowledge is the same! Done so in when these were made, but JAN testing is still used for semiconductors as well. The frame grid wire is so thin, when you open up a defective tube, you can not see it with the bare eye.
These tubes are datashewt and branded “National” USA. However they bias not as trhey shouls in all circuits, and have slightly lower gain.
JAN tested, for higher reliability.
This is a jewel. High Quality tubes from the Prague factory Code Very good selected, and this batch has very high test values. So you can see it yourself.
6N1P = 6922 = 6DJ8 = E88CC tube. Double triode
On internet auction sites, tubes are re-labelled, retro-gold plated, re-branded and used tubes are put in re-printed new boxes with the stamps ne-newed. TESLA is even a frame grid tube! Order nr for a matched and balanced pair: These are no Eatasheet Tubes. Used, but look and test like new.
The negative result is, end users have to swap tubes all of the time, and desparately try to draw conclusions from this. These appear like that. This is a very hard way of testing, since “good” tubes must still be rejected when they come from a production series where too many have failed the Dataasheet tests.
/ECC88/E88CC double triode | Hifi Collective
So if you order for instance tube 4 from this list, it is pre-matched with tube 8. Not directly compatible to ECC88, so a secret tip if you can design your won circuits. This is confirmed by the construction, there is the characteristical A-Shaped getter holder inside, and more details. In many problem cases, the ECC88 is not used correct. Clear white print like new, from spare equipment. This batch had very good values.
Number “2” would mean outside Germany. Eech test must be in between following limits: Low noise version of 6N1P. For the rest every little detail is identical. Unfortunally a big item particularly with this tube number.
Read below, how to connect the voltmeter. May seem a silly advice, but it is a popular mistake. This is a much improverd version of ECC88 made, with higher voltage capabilities, higher plate dissipagtion, and better in many many ways. Used tubes of this type generally have more hum and noise. Buy only from reliable sources!