A modified theme. For the Hitachi/Maplin power amp

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Colin Wonfor
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A modified theme. For the Hitachi/Maplin power amp

Unread post by Colin Wonfor » Wed Jul 03, 2019 4:51 pm

This is based on the Maplin/Hitachi theme these board are stereo and use much better and rugged FETS.
The PCB is stereo and you build it,
It gives 100W RMS into 8R

Each PCB blank will cost £40 it is double sided 2oZ Cu with silk screen.

http://seca.freeforums.net/thread/222/m ... plin-power
It can be done so imagine it.

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Colin Wonfor
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Location: UK
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Re: A modified theme. For the Hitachi/Maplin power amp

Unread post by Colin Wonfor » Mon Jul 08, 2019 12:45 pm

Oh I forgot to mention these can be bridged to give over 350W mono.
It can be done so imagine it.

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Colin Wonfor
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Location: UK
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Re: A modified theme. For the Hitachi/Maplin power amp

Unread post by Colin Wonfor » Mon Jul 08, 2019 9:59 pm

What's 'the Maplin/Hitachi theme'? they asked. (On chews)

In the late 1970s and early 1980s Maplin did a kit for MOS Amps, all were based on the Hitachi design and now obsolete MOS FETs. The Claymore was also based on the Hitachi design with some heavy mods to improve the sound. Now with new FETS the sound has been improved further and the amps are more efficient thus running cooler. And the damping factor has gone up because the Old FETS were 1.5-1.8 Ohm at 8Amps these are 0.06Ohms at 30+Amps little monsters.
It can be done so imagine it.

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