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Replacement L-Pad (hf level controller) for SWR Goliath Jr III?


DiMarco
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Hi,

I own a Goliath Jr. III cabinet. The HF unit in it is working but really really softly, near inaudible.
The HF level control on this cabinet feels funny and wants to be in the center position, hardly turns. Is it fried? I think so...

So I find myself searching for a replacement L-Pad right at the moment and am wondering if this would be a good one:

http://www.visaton.com/en/chassis_zubehoer/zubehoer/lc95.html



It is a Visaton 8ohms L-Pad rated at 100 watts.
Any thoughts or recommendations? I'm located in the Netherlands.

Cheers, Marco.

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It sounds like it's fried, yes. You're unlikely to do better than the Visaton one, although there are other ones around that are a bit cheaper. Like this one: <http://www.wilmslow-audio.co.uk/l-pad-attenuator-at-62h-425-p.asp>

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Before you spend any money look at the crossover circuit and see if it holds a car light bulb as a fuse/tweeter protector. They can come loose from the brackets that hold them in place etc etc

The rotary control on my old GII feels very stiff, but works ok....but the bulb has fallen out before now..but not completely, giving odd results. I turn it right down anyway so it took me ages to notice!

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The light bulb has been previously replaced by a regular (fast) fuse, which is working.
I can get the visaton L-pad pretty cheap and fast so I think I'll just order me one.

When I push the highest 2 frequencies on my 12 band Trace Elliot EQ all the way up the cab sounds like it should at the moment.

Thanks for your input guys!

Edited by DiMarco
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Today I replaced the old burnt out unit with the Visaton one.

As you can see in the photos the old L-Pad has suffered total meltdown with its previous owner. A problem he chose to solve by removing the lightbulb and replacing it with a regular fuse. The lightbulb however is part of the filter and I will have to replace the fuse with an original lightbulb.

Now then, the Visaton L-Pad is a fair bit larger then the original one that was built in by SWR. It has some sort of ceramic material and the rest of the housing is metal. I hope this will dispensate the heat better then the original unit, which is mostly made of plastics.

I haven't heard the final result of this operation yet as I still need to get myself a lamp and get rid of that fuse. What I do know is that the Visaton fits properly and that the original cover and knob can be simply pulled from the original L-pad and fit properly on the Visaton one. Good stuff!

Edited by DiMarco
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I'm guessing the replacement fuse let way too much juice through...hence the melted component?

Good news that the new one will be a fairly easy re-fit. The bulbs were pretty easy to find a few years ago, but the correct metal clips to hold them may be tricky to get.

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