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WD Amplifiers For discusson of World Designs Amplifiers |
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#1
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Just found these in a drawer. ?PreII OPTs?
While hunting for something else these two beauties turned up at the back of a drawer.
They are probably output transformers from my old PreII, but they may not be! Whatever they are, I vaguely remember wrapping the silver adhesive tape round them to minimise hum, or something! They have D8773 and 5/03 handwritten on them. Are they worth trying to sell? Guy |
#2
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Re: Just found these in a drawer. ?PreII OPTs?
If intending to sell on, I could well be interested.
Currently got a elma 24 way switch and have pre-amp build lights going off in my mind. PRE II specs - Used in our pre-amplifier module, the PREII. Secondary:primary ratio is 6:1, so is a step down transformer. High quality, excellent for driving long interconnects. Maximum current is 15mA, can be used with a 6922 valve (one triode section only). It measures 80mm(w) x 60mm(l) x 65mm(d). Last edited by audiopete; 4th February 2012 at 09:51 PM. Reason: specs |
#3
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Re: Just found these in a drawer. ?PreII OPTs?
They look very like Pre 2 trannies.
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#4
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Re: Just found these in a drawer. ?PreII OPTs?
They are indeed Pre II optxs and if used will require the specified Zobel network on the output side to reduce the ringing. Keep far away from other power txs as they were VERY susceptible to magnetic field pickup
John |
#5
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Re: Just found these in a drawer. ?PreII OPTs?
Thanks Dr John and Ali tait.
I've just PM'd you, Mr audiopete, as you expressed an interest in them. Oh, and Happy New Year, everyone! Guy |
#6
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Re: Just found these in a drawer. ?PreII OPTs?
Hi Guy,
PM'd with additional info for you. |