AudioRoundTable.com - RDF feed
type: channel
description: Audio advice and discussions with audiophiles and professionals. Free discussion forums, open to all and frequented by industry experts. Ask questions and get advice on stereos, speakers, hi-end amplifiers, pre-amps, home theater, tube hi-fi, turntables, vinyl, tweaks, music, films, video, DVDs and more.
items: SE tube output transformers to match 1Pi Speakers
items: Re: SE tube output transformers to match 1Pi Speakers

SE tube output transformers to match 1Pi Speakers
type: item
description: I am building a Tubelab SSE and looking to the next project which will be a set of speakers. The 1Pi seems to fit the bill however after looking at the impedance graph I am unsure what to choose for output transformers. My initial plan was to go with a pair of Edcor GXSE15-8-5k. However the 1Pi spends a good portion of it's range under 8 ohm dipping down to what looks like 4 ohm at 2 points. Will the 8 ohm transformers drive them ok or should I be looking at a lower output impedance?
creator: spiggs
date: 2020-05-07T05:04:38-00:00

Re: SE tube output transformers to match 1Pi Speakers
type: item
description: You can use either the 4Ω or 8Ω tap, whichever sounds best to you. You can use either tap without risk of harm to amp or speakers. I generally prefer to use the 8Ω tap on my tube amps.
creator: Wayne Parham
date: 2020-05-07T15:52:45-00:00

Re: SE tube output transformers to match 1Pi Speakers
type: item
description: Thanks for the reply Wayne. That model of Edcor only comes with a single tap so I need to choose either 4Ω or 8Ω when I purchase them. My original plan was to get the 8Ω version so I will stick with that. Can I also get a copy of the plans for the 1Pi? Thanks again.
creator: spiggs
date: 2020-05-07T16:29:23-00:00

Re: SE tube output transformers to match 1Pi Speakers
type: item
description: Yes, go with 8Ω. And you have mail!
creator: Wayne Parham
date: 2020-05-07T16:33:49-00:00