Maybe someone who knows this amp will be able to give a definitive answer but, generically...
If an amp has only one rail, it will be a positive rail.
If an amp has only one rail, BOTH speaker terminals will have a DC voltage that's 1/2 of the rail voltage. Neither speaker terminal will be connected to ground. Both positive and negative will be driven by the output transistors.
If an amp has only one rail, it will be a positive rail.
If an amp has only one rail, BOTH speaker terminals will have a DC voltage that's 1/2 of the rail voltage. Neither speaker terminal will be connected to ground. Both positive and negative will be driven by the output transistors.
Yes but when measured across the speaker terminals you should read zero volts correct? I'm getting 150 Volts when checked with a meter across the terminals. Or am I in error. Thanks Perry.
OK. Someone else will have to help with this one. I've never seen an amp with only the negative rail.
Okay. I'll double check when I get back. I could be mistaken. I'm sure you've seen a fair share of amps. I'll let you know.
Okay, double checked. I don't know what's going on with me today. Sorry Perry. The rail is +250 volts. I was getting really strange voltage measurements. I found the problem. I have my Fluke hooked to a power supply. When I took it off the power supply and ran it on the battery. Things started making more sense. The rail stabilizes at +250 volts. The Speaker terminals have 0 voltage across them. The output is really noisy but I believe it is because the amp needs to be capped. All the caps are a little rounded on the top. Not enough to pop the plastic cover on the top.Sorry about the meter mistake but I learned something and won't make that mistake again. I'll keep it on battery from now on. Thanks for your help.