Elektor Fortissimo-100 amplifier...

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jack
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#1 Elektor Fortissimo-100 amplifier...

Post by jack »

Elektor this month (November/December 2022) have an interesting amp with the following numbers: THD+N: 0.000.8 % at 50 W
into 8 Ω, maximum power 98 W into 8 Ω or 188 W into 4 Ω with THD ≤ 1 %. Uses a DC servo and is fully protected against DC on output and PSU faults... final drive is NJL3281D/NJL1302D, which are nice devices...

All PTH construction too... I've been tempted to build another "straight bit of wire with gain" amp for a while and with the PSU requirements this has, an "ideal rectifier" PSU based on the LT4320 (or similar) would be nice...

Really quite tempted...
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rowuk
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#2 Re: Elektor Fortissimo-100 amplifier...

Post by rowuk »

Everything that I have ever built from Elektor has worked well for a short time, then failed. Amplifiers, preamplifiers, NiCad battery chargers and the like. Maybe it is me but I doubt it.
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#3 Re: Elektor Fortissimo-100 amplifier...

Post by jack »

rowuk wrote: Mon Nov 07, 2022 7:08 pm Everything that I have ever built from Elektor has worked well for a short time, then failed. Amplifiers, preamplifiers, NiCad battery chargers and the like. Maybe it is me but I doubt it.
Nah. It's you!

Being fair, I've built a few things from elektor over the last 40 years or so and they've always been fine...
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Nick
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#4 Re: Elektor Fortissimo-100 amplifier...

Post by Nick »

which are nice devices
Though it looks a bit problematic to get hold of.
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#5 Re: Elektor Fortissimo-100 amplifier...

Post by jack »

Nick wrote: Mon Nov 07, 2022 8:39 pm
which are nice devices
Though it looks a bit problematic to get hold of.
True. Mind you, 83 weeks factory lead time is interesting...
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#6 Re: Elektor Fortissimo-100 amplifier...

Post by Nick »

jack wrote: Mon Nov 07, 2022 8:48 pm
Nick wrote: Mon Nov 07, 2022 8:39 pm
which are nice devices
Though it looks a bit problematic to get hold of.
True. Mind you, 83 weeks factory lead time is interesting...
There are lots of parts at the moment with that sort of lead time :-(
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#7 Re: Elektor Fortissimo-100 amplifier...

Post by jack »

Nick wrote: Mon Nov 07, 2022 8:39 pm
which are nice devices
Though it looks a bit problematic to get hold of.
In stock now!
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