More SEPs

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Mike H
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#46 Re: More SEPs

Post by Mike H »

Cressy Snr wrote: Wed Apr 12, 2023 9:25 pm
simon wrote: Wed Apr 12, 2023 8:25 pm What's in the box of tricks Steve (Ant)? I've been musing on a headphone amp but don't really know anything about them.
When I did it for SS amps, only needed a resistor divider to step down because the amps don't care that the 'load' is a higher impedance than speakers.

However can't do that with a valve amp with an OPT that has to be properly loaded so I would use two 10 or 20 Watt aluminium clad wireound resistors, screwed onto the case somewhere, and then have a double pole 2-way toggle switch to change over from speaker terminals to the resistors. The headphones jack had the resistor dividers same as for SS. Hope that helps.
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Nick
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#47 Re: More SEPs

Post by Nick »

Xcept in this case it's a step up as the electret needs a higher signal voltage.
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simon
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#48 Re: More SEPs

Post by simon »

Interesting subject, but I don't want to bog Steve's thread down with headphone talk. Might start a separate thread.
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Mike H
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#49 Re: More SEPs

Post by Mike H »

Nick wrote: Fri Apr 14, 2023 11:46 pm Xcept in this case it's a step up as the electret needs a higher signal voltage.
Memo to self – must read others' posts more thoroughly ... :oops:

As you were!
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