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F4 power amplifier
F4 power amplifier
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Old 19th April 2018, 08:13 PM   #4401
Lingwendil is offline Lingwendil  United States
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Got it, missed that bit from the datasheet.
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Old 21st April 2018, 09:31 PM   #4402
Jeffs is offline Jeffs  United States
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Two questions,
I came here to ask is a single stereo Aikido 6SL7/6SN7 is lacking anything as far as powering two F4 monoblocks?

The previous page has me somewhat motivated to give the BA-3 a try. I was given the boards and have most of the inexpensive parts. Two matched quad's from the recommended seller?.
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Old 21st April 2018, 10:00 PM   #4403
Zen Mod is online now Zen Mod  Serbia
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is Aikido having balanced output?
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Old 21st April 2018, 11:42 PM   #4404
Jeffs is offline Jeffs  United States
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Quote:
Originally Posted by Zen Mod View Post
is Aikido having balanced output?
No.
Is it not an option to put something as low tech as a Y splitter cable that would work?

If there is a thread which helps explain the BA-3 preamp with a single ended to balanced output with photo's for us old folk, well I must have really bad ADHD because I've spent months looking. It is sort of out of the question after a discussion in the last hour over finances. If I won the lottery or can sold some old equipment then I might be able to buy two sets of matched quads.

I need a phono stage within two weeks, so repurposing the Aikido for that to provide the last dB's of gain might not be a bad use of it, especially since it has no selector or volume control. I might get by through the hot months with an amp that doesn't create as much heat while I work on some of the other projects.
I never thanked you for referring me to a particular turntable project about 16 months ago but needless to say I need to show my better half where the money for the new tonearm and cable went. Maybe she still has a headache from the sound of cutting slate.

Last edited by Jeffs; 21st April 2018 at 11:45 PM.
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Old 22nd April 2018, 10:32 AM   #4405
Zen Mod is online now Zen Mod  Serbia
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best and easiest way of having SE/Bal transformation is nothing else than - transformer

decent while still cheap ones - look at Edcor site , 10K variety

if you need help , just buzz here
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Old 22nd April 2018, 10:33 AM   #4406
PierreQuiRoule is offline PierreQuiRoule  Canada
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Impedance of Infinity RS-IIIb speakers (assuming this is what you are planning on using) dips below 4 ohms. So you may want to configure your F4s in "Mono parallel connections" [see manual], in which case you can connect the Aikido output using a "Y" cable as you describe.

The Aikido pre is a good match to the F4. Lots of gain, peak-to-peak swing and very quiet. I enjoy mine very much.

Pierre
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Old 22nd April 2018, 10:52 AM   #4407
Zen Mod is online now Zen Mod  Serbia
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Quote:
Impedance of Infinity RS-IIIb speakers (assuming this is what you are planning on using) dips below 4 ohms. So you may want to configure your F4s in "Mono parallel connections" [see manual], in which case you can connect the Aikido output using a "Y" cable as you describe.
agree on that
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