Impedance Selector Switch To Avoid - Trust Me!

[@theguitaramptech]

Well spotted, mate. I faced the same issue a few months ago, and having to ream out that hole just made me weep.

[@soapboxearth2]

An additional watning: the same company , I believe , makes a slightly larger switch seen on marshall reissues. The one on my current build gas 3 switch positions 4,8,16. But it will turn 6 times . 3 positions don't have a marking or continuity. So you could potentially move the dial to a spot that will show no load on your ot.

[@petercornell2002]

What a bunch of crap..... Good call out Brad

[@soapboxearth2]

Thanks for sharing this. I'm building a plexi right now, and the modulus chassis has a cutout for a similar switch, but it's the one that you see on marshalls and has flanges with 2 screw holes for mounting. I HOPE it's a different manufacturer!!!

[@Lu_Woods]

Ouch.

[@victorbeebe8372]

Mahalo Brad!

[@TungstenAmp]

Some jobs you make money from, on others you earn your reputation. Just finished one of the latter for a guy, hope he brings me more work. 😂

[@alvagoldbook2]

Damn. I put one of these in an amp I built because I thought they looked pretty good and didn't cost an arm and a leg like the old Marshall coin slot selectors. So far no breakage, but I keep things on 16R all the time anyway.

[@Mark70609]

There is a lot of current going through the secondary winding. You want a heavy duty switch here.

[@RobbieF]

Is there a smaller and more reliable switch that could be used? If so, is it possible to create an "adapter" to mount the good switch in the large round hole? Just a thought. Oh ... and Thank You for the video, Brad!

[@KamilT138]

I removed it from my Ampeg VL and hardwired it to 8 Ohm. Those switches suck haha. There's more expensive version that someone put into single ch vl I bought, it's bigger and with 2 screws like those on JCM 800 reissue. I hope it's better, but the way it works seems similar to those

[@ianjamesevans]

I'm wondering if you could 3d print an adapter for the large opening to use a less expensive (and better) switch. I've done something similar for filling large chassis holes in an old PA amp to fit regular Switchcraft jacks.

[@AlexKenis]

Looks like the same crap switch VHT used back in the day (maybe still do... been a while since I repaired one), they were the perfect trifecta of crappy/expensive/rare

[@j.jester7821]

I think these are what marshall and hiwatt used these. set it and leave it alone was alway my rule with these cheap impedance selectors.

[@martinreid1740]

Poor parts but this the world we live in.

[@desvega5849]

Kind of suck? Selling it a bit short, Brad, especially for the price. Dammit Bogner, you make some great amps but make some head-scratcher decisions

[@jutukka]

Why don't they use the same type of switch as a main voltage selector switch as well? 🤔 I mean it's always less than 250 VAC, and broken switch is really quite a small problem unless you pee into it...

[@ronjinks8932]

These are throw away amps. Typical production approach. If it last past the warranty ...they can sell a zillion before they discontinue the model.

[@BradsGuitarGarage]

Riveras are very reliable amps. This is more of a indictment on the switch itself.

[@Mark70609]

@@BradsGuitarGarage I have only ever own a Rivera Fender which was okay. What are your thoughts on the Rivera amp?

[@Mark70609]

The amps with D class output stages may fall into the expendable class. I wonder how long the chips will be available, it might be like the 741 opamp where something will be around to fit the amp or it may not.

[@RexCoggins]

That sucks!