Using BHK 250 with speaker cables with O-lug terminations


#1

I just received a BHK 250 and am trying to find the best way to use it with my speaker cables. They have copper O-lugs installed and my current amps have 5-way binding posts where I can remove the screw-on nut and slip the O-lugs over the posts, then replace and tighten down the nut.

The BHK 250 speaker connections don’t seem to allow me to remove the screw-on nut.

OTOH, these connectors (on EBay) are advertised as the same ones and they look exactly the same:

https://www.ebay.com/itm/4-pairs-Robust-cinching-binding-posts-Red-Black-Banana-Speaker-Connector/192079881433?hash=item2cb8da64d9:g:z9sAAOSw-0xYfNtq

AND the pictures show them fully disassembled with the screw-on nut removed. See attached picture from the ad.s-l1600.jpg

I’d prefer NOT to have to re-terminate my speaker cables. What trick to I need to use to remove the screw-on nuts?

THANKS!

Greg in Mississipi


#2

Let me check with the designer of the binding posts on Monday.


#3

Thanks Paul.

I made up adapters using 10g copper wire… bent into a flat coil that fits around a 1/4x20 nylon bolt, soldered into a solid flange, then filed flat. The 2 lugs per polarity (the speakers are bi-wired) are bolted using nylon HW on either side of the coil and the tail of the coil fits into the hole in the shank of the post. The assembly is insulated using a section of a road bicycle tire stretched over the exposed copper parts.

I’ve torqued down on this as well as I can and it works… and the BHK 250 is making beautiful music. BUT I bet mounting the lugs on the shanks directly would sound better (and be more secure, long-term).

Again, thanks for checking… and for the great amp!!!

Greg in Mississippi


#4

I will check with Bill and I think I figured out part of the mystery. The binding posts you found on eBay were indeed our own and being sold by a local scrap dealer. We scrapped those because they came apart and were malfunctioning from the manufacturer. You don’t want those, for sure. It’s why we scrapped them.


#5

Well that’s an interesting twist!


#6
Paul McGowan said

I will check with Bill and I think I figured out part of the mystery. The binding posts you found on eBay were indeed our own and being sold by a local scrap dealer. We scrapped those because they came apart and were malfunctioning from the manufacturer. You don’t want those, for sure. It’s why we scrapped them.


Paul, THANKS!

LOL… actually the ones on my BHK 250 are similar, but slightly different with a knurled nut instead of one with wrench flats. I’m hoping that is the current production or at least not the scrapped ones as they are different.

Looking forward to what you find out.

Greg in Mississippi


#7

Paul,

Could you still check if it is possible to totally screw off the retaining nuts on the current-production binding posts. THAT would work a lot better for me if possible.

THANKS!

Greg in Mississippi


#8

Oops. Sorry. I did and it cannot be removed.


#9
Paul McGowan said

Oops. Sorry. I did and it cannot be removed.


Ok.

Thanks Paul.

Also, I sent an email to you with a more esoteric question… please check.

THANKS!

Greg in Mississippi