Search the Community
Showing results for tags 'steel terminal block bypass'.
Found 1 result
-
This was brought up in a thread in the 2 channel forum. I thought a discussion about it would be a good idea so we can clear the air. Interesting. You made me look up the electrical conductivity of metals yet again. What I found is: Brass IACS (% of copper conductivity) Admiralty Brass 24.00 Admiralty Metal (Annealed) 24.60 Aluminum Brass (Annealed) 23.00 Cartridge (Annealed) 28.00 High Strength Yellow 12.00 Leaded Naval (Annealed) 26.00 Leaded Semi Red 18.00 Leaded Yellow 25.00 Low (Annealed) 32.00 Low Leaded (Annealed) 26.00 Naval (Annealed) 26.00 Red (Annealed) 37.00 Yellow (Annealed) 27.00 Aluminum Brass (Annealed) 23.00 Steel IACS (% of copper conductivity) Steel, Cast 10.70 Steel, High Alloy 2.90 Steel, 304 Stainless 2.50 Steel, 304 Stainless 2.50 Steel, 347 Stainless 2.40 Zircaloy - 2.40 Steel, 316 Stainless 2.30 To summarize, most steel has a conductivity of under 3% of the copper wire you are connecting to it. Although brass is 10 times better, it is still about 1/4th as conductive as the speaker wire. Unless there are some physics I don't know about, this is going to impact current flow in a negative way. On heritage networks, one could connect the speaker wire on the back terminal, thereby bypassing the terminal block. One could also run a jumper wire from the front to the back, which would serve the same purpose and allow use of the speaker input screw. We need to hear from some people who have run tests on this subject. There is only 1 best way to do anything, and it seems like a steel terminal block is not the best way.
