Harman/Kardon 330C - speaker terminal replacement?

[davstev]

Hi all, I picked up a H/K 330c, in decent shape, with just a few issues.

One of the issues is that a whole row of speaker terminals is wrecked and needs replacing. This must be a common problem, they are pretty flimsy. I have disconnected them and taken the broken mount panel out too. There's now just an open rectangular hole and some wires.

Anyone know of a decent replacement that will fit in the existing rectangular cutout hole on the back panel? Ideally a drop-in replacement? An upgrade of sorts?

thanks,
David

 

[spark1]

I don't know of anyone making these. but it looks like it would be fairly easy to fabricate, using some 1/8" black plastic acrylic (like this https://www.homedepot.com/p/Falken-...-Design-ACRYLIC-BK-1-8-1212/308669435#overlay). Cut to fit, drill 4 holes for 5-way binding posts. The plastic rivets are available at Mouser, probably other places too.

Around $40 for materials, plus labor. Not bad for a nice upgrade.

 

[WizardWG4]

You could also use G10 and the speaker posts of your choice.

https://tubedepot.com/products/1-8-g-10-board-black

Or these perhaps?

https://www.ebay.com/itm/1540748147...HRASghFoE2ft+IVPh7ZE3As2w=|tkp:Bk9SR7aRqZDcYQ

 

[Warren-Oates]

I've been looking for some posts to use for that purpose. I think they need to be skinny though to fit in the space of the original post. What I've seen seems a little too big to fit 4 posts in that space. If you find some skinny posts please list them here so people can see what you found, thanks

 

[spark1]

How long is the existing backing plate?

 

[davstev]

How long is the existing backing plate?

I'll measure when I am home this evening, and post the results here.

 

[Warren-Oates]

Here is a shot of mine.

 

[sruchris]

If you want to keep it original, I have a 330c parts unit with good speaker terminals.

 

[davstev]

If you want to keep it original, I have a 330c parts unit with good speaker terminals.
View attachment 2828207

Thanks, I think I am going to go the "upgrade" route instead. I find those terminals a bit flimsy.

 

[davstev]

Here's what I did: These are banana plugs. It seemed to work ok, mounting the banana plugs firmly inside holes drilled into Sintra (plastic). I should be a bit concerned about the plugs touching each other but for now they seem ok. I might oneday change this again. It's ok but they do stick out...