Hi again
OK - thanks again. The tubes I have are for sure NOS. They came from Kastup Airport in Copenhagen. I got them from a person who works there. He got a lot of tubes when they decided to get rid of some old stuff.
About building an amp with these. I have a set of output trannies made for 300B PP. The problem is that i dont know the load they represent. Does someone know if it would fall in a range that is uaseble for these tubes? I also have a set of output trannies made for 4 x 6550C Paralel push pull. Would these be better?
Thanks again, Peter
OK - thanks again. The tubes I have are for sure NOS. They came from Kastup Airport in Copenhagen. I got them from a person who works there. He got a lot of tubes when they decided to get rid of some old stuff.
About building an amp with these. I have a set of output trannies made for 300B PP. The problem is that i dont know the load they represent. Does someone know if it would fall in a range that is uaseble for these tubes? I also have a set of output trannies made for 4 x 6550C Paralel push pull. Would these be better?
Thanks again, Peter
For Class A PP, you need about 2k - 2k5 anode to anode for one pair of 6528 triodes (one 6528 - it's a dual triode), and for SE a 2k transformer. If you ratio a 5k transformer (that's probably what your 300B transformers are) by connecting an 8R load across the 16R winding to give a 2.5k load you will lose a little bit of power in the excessive DC resistance of the secondary and the HF performance won't be as good as a purpose-designed 2k5 transformer, but bass may be better. If you feel that SY is too far away to send 6528 for proper crushing, the UK is nearer...
The 6528 Disposal Center
EC, please, you can't seriously want to pollute your lovely country with toxic waste like that. Be a patriotic European and direct all such garbage to less civilized lands like the US. It's a sacrifice for us, but sacrifice for the good of others is our motto.
EC, please, you can't seriously want to pollute your lovely country with toxic waste like that. Be a patriotic European and direct all such garbage to less civilized lands like the US. It's a sacrifice for us, but sacrifice for the good of others is our motto.
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