Page 1 of 1

DR 505 -- Are all the power transformer primary taps inside?

Posted: Mon Mar 02, 2015 2:21 am
by Jdmp1970
Hi All, I've just bought a Hiwatt DR 505 and it is on it's way to me here in Australia. Before I bought it I noticed that it was 115v, but I assumed being British made it would have taps on the power transformer for all the usual international voltages. I assumed they would be tied up somewhere inside the chassis. Now that the amp is paid for, I'm starting to worry that maybe this isn't the case. Note that my amp isn't one of the ones with a plate over the voltage selector. The chassis is not punched where the voltage selector would normally be.

If you have any experience with the power supply of the DR 505 (especially the ones without the voltage selector) could you let me know if your power transformer had all the taps or if Hiwatt special ordered 115V only transformers for these amps.

My amp is SN 10760 and it has a factory IEC power socket at the back (and as mentioned already, no voltage selector with plate over it).

Any help is appreciated.

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Mon Mar 02, 2015 4:11 am
by mhuss
hi John,

Is there any way you can get a detailed shot of the insides of the amp from the seller?

--mark

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Mon Mar 02, 2015 8:27 pm
by Jdmp1970
Unfortunately not. I bought it at auction. John

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Mon Mar 02, 2015 9:07 pm
by Dr.HI-TONE
once you receive the amp, post some pics.
Welcome to The Vintage HIWATT forum!

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Mon Mar 02, 2015 11:48 pm
by thefatcyclist
Ha... If not mistaken, that was in the Snowy White Gold Top auction at the weekend.... congrats I saw the amp in the catalogue.

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Tue Mar 03, 2015 12:56 am
by Jdmp1970
Yes, that was the auction. I put in a low ball bid on a whim. Next thing you know, I own a Hiwatt!

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Sat Mar 07, 2015 10:43 pm
by thefatcyclist
well done. :wink:

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Thu Mar 19, 2015 3:47 am
by Jdmp1970
Good news. The amp arrived today and all the extra primary wires are tucked away in the wire loom.

20150319_110708_resized_1.jpg
20150319_110708_resized_1.jpg (306.7 KiB) Viewed 533 times


Bad news is that the output transformer has been out or maybe changed. It is a partridge but the wiring has been disturbed. Will post more photos and description in another thread when I get some time. Thanks to everyone and hope this thread helps out someone else in the future.

Re: DR 505 -- Are all the power transformer primary taps ins

Posted: Thu Mar 19, 2015 10:42 am
by Dr.HI-TONE
I can't tell if the leads are long enough, but if this is on e of Snowy's amps. I would recommend a voltage transformer that takes in your 240-ish V.A.C. and puts out 120 V.A.C.