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BUILD NOTES

Clipping diodes

The Duellist uses BA282 diodes, which clip at a slightly higher threshold than standard silicon diodes

such as 1N914 (approximately 0.82V compared to 0.7V). These diodes are out of production and hard to

find in the old-stuck market.

Now, the closest option is the BAS33. These clip at around 0.8V, still significantly higher than the 1N914

and only slightly lower than the BA282. We've compared the curves on a Peak DCA75 and confirmed

that they closely match the BA282 across the current test range.

The only problem is that the BAS33 went end-of-life in early 2022. Availability is still high, but

eventually they'll join the ranks of the others.

Omitting the send/return jacks

The loop between the two channels is a modification that is not in the original Duellist. This loop

automatically shorts together if nothing is plugged in, so it's fully backwards-compatible if you don't use

this feature. However, if you do want to omit it entirely, see the alternate wiring diagram on page 11.

Enclosure size

This project was designed for the Hammond 1590BBS enclosure, which has the same height as the

125B or 1590N1. If you don't use the Hammond brand, be careful—not all 1590BBS enclosures are the

same. For example, Love My Switches sells two different types, and the

CNC Pro

version is correct while

the standard one is too short.

The 1590BB2 seems like a close equivalent, but it's about 4mm shorter. It may be possible to fit this

circuit in a 1590BB2, but we have not tested it, so you're on your own!

Another alternative is the 1590C (also available from Tayda and Love My Switches). It's about 10mm

taller than necessary, but if that's all you can find, it will definitely work.

GLADIATOR DUAL DRIVE