Hoffman Amplifiers Tube Amplifier Forum

Amp Stuff => Tube Amp Building - Tweaks - Repairs => Topic started by: shortfuse on December 20, 2011, 09:56:25 pm

Title: OT Suggestion For 36W EF86 Amp
Post by: shortfuse on December 20, 2011, 09:56:25 pm

What OT would you guys suggest for a 4) EL84 Power Section, 36W EF86 build? 

Title: Re: OT Suggestion For 36W EF86 Amp
Post by: kagliostro on December 21, 2011, 03:34:21 am

Hammond 1760J

4.000ohm / 4-8-16ohm   35W

http://www.hammondmfg.com/pdf/EDB1760J.pdf (http://www.hammondmfg.com/pdf/EDB1760J.pdf)

Kagliostro

Title: Re: OT Suggestion For 36W EF86 Amp
Post by: phsyconoodler on December 21, 2011, 11:45:48 am

That one will work as well as the AC30 replacement from Hammond.Depending where you are,getting an OT from Hoffman may be a good idea.He has the 35 watt Fender style OT's that have the right loading for a 4-EL84 amp.

Title: Re: OT Suggestion For 36W EF86 Amp
Post by: kagliostro on December 21, 2011, 12:17:37 pm

See Doug transformer page

http://www.hoffmanamps.com/MyStore/catalog/parts1.htm (http://www.hoffmanamps.com/MyStore/catalog/parts1.htm)

look to the 022848 that is the same destination transformer, only it has 4ohm output instead of multitap

$45.00 is a good price  :wink:

Kagliostro

Title: Re: OT Suggestion For 36W EF86 Amp
Post by: DummyLoad on December 21, 2011, 02:15:30 pm

doug's multi-tap 40W.

www.hoffmanamps.com/MyStore/perlshop.cgi?ACTION=enter&template&thispage=Transformers&ORDER_ID=!ORDERID!  (http://www.hoffmanamps.com/MyStore/perlshop.cgi?ACTION=enter&template&thispage=Transformers&ORDER_ID=!ORDERID!)

Part number 018343

--DL

EDIT... Fixed link... sluckey

Title: Re: OT Suggestion For 36W EF86 Amp
Post by: shortfuse on December 21, 2011, 10:46:42 pm

Thanks for the replies and suggestions.  I definitely want a multi tap but I am still contemplating between a 36 and 18 watt build.  If I go the 18 route I will definitely use Dougs Heybors.  I usually buy all my parts from Doug.