hi all,
i was recently having a bit of a clean out at in the garage and came across a few items that spawned the above idea, 12x phillips pl500 sweep tubes (some 27v heater, some 12v heater), 10x hitachi 400v, 680uf capacitors and two transformers, one a 230 - 230 300va toriod and a 30va, 40v ei.
[IMGDEAD]https://i31.photobucket.com/albums/c372/preludefan/20130217_1703091.jpg[/IMGDEAD]
i have seen a guys video on youtube (i believe hes on this site somewhere) of his pl36 based otl
https://www.youtube.com/watch?v=ksBvKeN0u5o
i am looking to set these bits up i have as an integrated otl that has tone and balance adjustments all in the one unit, nothing is new on the preamp side of things,ill share the circuit i use for this later on....
im after a few opinions on how to go about this ....i have seen a couple of schematics using pl36 tubes in otl configuration and from what i read they are not too drastically different from the pl500 (i think the dissapation of a pl36 is 16w vs the pl500s 12w?)
so was thinking to follow this schematic....
http://bildarkiv.hififorum.nu/Lord/byggen/PL36_OTL.gif
i dont have any power goals, as i have no idea what this will net, however bare in mind there is enough room on the chassis for another 12 tubes and the power supply cap array is over the top even with 24 tubes! (not too sure about what HT current will be required for 12, let alone 24! however... a 100w + per channel otl amp would be great!
anyway, thanks for reading and any advice any of you gurus have would be great!
mike
i was recently having a bit of a clean out at in the garage and came across a few items that spawned the above idea, 12x phillips pl500 sweep tubes (some 27v heater, some 12v heater), 10x hitachi 400v, 680uf capacitors and two transformers, one a 230 - 230 300va toriod and a 30va, 40v ei.
[IMGDEAD]https://i31.photobucket.com/albums/c372/preludefan/20130217_1703091.jpg[/IMGDEAD]
i have seen a guys video on youtube (i believe hes on this site somewhere) of his pl36 based otl
https://www.youtube.com/watch?v=ksBvKeN0u5o
i am looking to set these bits up i have as an integrated otl that has tone and balance adjustments all in the one unit, nothing is new on the preamp side of things,ill share the circuit i use for this later on....
im after a few opinions on how to go about this ....i have seen a couple of schematics using pl36 tubes in otl configuration and from what i read they are not too drastically different from the pl500 (i think the dissapation of a pl36 is 16w vs the pl500s 12w?)
so was thinking to follow this schematic....
http://bildarkiv.hififorum.nu/Lord/byggen/PL36_OTL.gif
i dont have any power goals, as i have no idea what this will net, however bare in mind there is enough room on the chassis for another 12 tubes and the power supply cap array is over the top even with 24 tubes! (not too sure about what HT current will be required for 12, let alone 24! however... a 100w + per channel otl amp would be great!
anyway, thanks for reading and any advice any of you gurus have would be great!
mike
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