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Title: Power transformer Post by: jestaudio on March 22, 2011, 07:26:08 PM Heys folks, i,m a newbie about to start my first D type build, got the boards from Nik but using my own trannie, question is how much leeway do i have on voltages, im looking at a Mojo which is about 10v hicher at 355 and 5 v lower on the bias tap
Title: Re: Power transformer Post by: plasticvonaband on March 22, 2011, 10:36:16 PM I'd stay within spec. The plate voltage is already quite high with the stock PT and from what i gather the Bias voltage is pretty critical to stay in spec.
Gabby sells Mercury Magnetics PT's, OT's, and Chokes which are considered upgrades at fairly reasonable prices http://www.gabkits.com/transformers/ceriatone Gregg Title: Re: Power transformer Post by: MrGoldTop on March 22, 2011, 11:25:52 PM I wouldn't be too concerned. You're talking less than 3% (710/690=1.029). That's like your line voltage going from 118V to 121.5V. You wouldn't notice. By the way Ceriatone's PT's come can with a 50V or 60V bias winding (Check the web site pics). Mine is 50V and works fine.
Title: Re: Power transformer Post by: sduck on March 23, 2011, 03:44:33 AM Nik is also an authorized mercury dealer - meaning he can sell you the mercury trannies at his dealer price. You send him the money, Mercury send you the trannies directly, which if you're in the US saves a lot on shipping. Don't forget the shipping costs on these things from wherever you end up getting them - they weigh around 25 lbs, which is expensive to ship.
Title: Re: Power transformer Post by: plasticvonaband on March 23, 2011, 03:54:52 AM good point, sduck. i forgot about that
Title: Re: Power transformer Post by: jestaudio on March 23, 2011, 07:47:45 PM Nik is also an authorized mercury dealer - meaning he can sell you the mercury trannies at his dealer price. You send him the money, Mercury send you the trannies directly, which if you're in the US saves a lot on shipping. Don't forget the shipping costs on these things from wherever you end up getting them - they weigh around 25 lbs, which is expensive to ship. Already thought of that but shipping to the uk is way expensiveTitle: Re: Power transformer Post by: T Wilcox on March 23, 2011, 08:06:15 PM This site was recommended by McInku on another post. My dumb american ass cant read it though cause I only speaky the english.
http://www.trm-audio.si/ Title: Re: Power transformer Post by: sduck on March 23, 2011, 09:50:02 PM Nik is also an authorized mercury dealer - meaning he can sell you the mercury trannies at his dealer price. You send him the money, Mercury send you the trannies directly, which if you're in the US saves a lot on shipping. Don't forget the shipping costs on these things from wherever you end up getting them - they weigh around 25 lbs, which is expensive to ship. Already thought of that but shipping to the uk is way expensiveOh - didn't realize you were over there. Then skip that idea - find something more local! Title: Re: Power transformer Post by: mcinku on March 24, 2011, 01:16:29 PM This site was recommended by McInku on another post. My dumb american ass cant read it though cause I only speaky the english. http://www.trm-audio.si/ Yes these are the trannies I use... unfortunately the site is just in local language. Here's the direct link to PTs http://www.trm-audio.si/omr_transf.htm (http://www.trm-audio.si/omr_transf.htm) ...the prices are without VAT |