need high-amp DPDT toggle switch for speakers - Page 2

weltersys · 18th February 2012, 04:48 PM

Quote:

Originally Posted by cyclecamper

What's the standard for the 1/4" jack. With + on the tip, should the cone move in or out?

What's the standard for wiring the NL4 for two drivers (mostly interested in polarity)? Wire one driver to which pins, other to which, and which way should the cone move with + on which...

Positive voltage on the 1/4" tip should move the cone forward (away from the magnet) on a standard front loaded box.

NL4 pins 1 are LF, + should move the cone forward (away from the magnet) on a standard front loaded box.
Pins 2 are HF, + should move the cone forward (away from the magnet) on a standard front loaded box.

There are some variations in NL4 wiring, the above is the JBL SRX series standard.

cyclecamper · 19th February 2012, 10:48 PM

"Positive voltage on the 1/4" tip should move the cone forward (away from the magnet) on a standard front loaded box."
Check! Thanks!

Now i'm confused. Are the NL4 marked 1/2/3/4 or 1-/1+/2-/2+ ?? I'm going to have to go to Guitar Center or someplace like that to get an NL4 plug, as my sockets are wired and covered with several layers of shrink-wrap, and mounted. I'll get a numbered plug and use my meter...

Speedskater · 20th February 2012, 12:32 AM

One of the SpeakOn papers has the following information:

one NL8MPR socket
low frequency pins 1+/1-
low mid frequency pins 2+/2-
high mid frequency pins 3+/3-
high frequency pins 4+/4-

Positive signal on speaker pin "+" produces positive waveform
from driver (moves cone outwardly)
"+" = In phase (high) "-" = Ground (out of phase, low)
Lower numbers for lower frequencies.

weltersys · 20th February 2012, 05:41 PM

Quote:

Originally Posted by cyclecamper

Now i'm confused. Are the NL4 marked 1/2/3/4 or 1-/1+/2-/2+ ?

Four conductors, pairs labeled 1-/1+ 2-/2+.

cyclecamper · 8th April 2012, 11:50 PM

OK I found the markings on a plug, so with a meter I can easily find the associated wire from the jack now.

And + is also red for binding-post terminal strips?

bentoronto · 9th April 2012, 03:47 PM

I use this switch for phase reversal testing on my giant OB. Not that I've ever been able to choose the right phase in my whole life. Got it for a school science project around 1949. Works good, always has. Center off. Great design, eh. C'mon, no laughing.

Ben
great weather in Toronto

cyclecamper · 9th April 2012, 04:06 PM

Yes, they work better than most, and the DPDT is just what's called for. But the risk of damage is also great. A toggle is pretty well protected if I recess it. But I don't think I'm going to bother with any switches anyway. Instead I would probably use some Neutrik jacks with plugs wired in various ways.

20th February 2012, 12:32 AM	#13
Speedskater diyAudio Member Join Date: Sep 2002 Location: Lakewood, Ohio	One of the SpeakOn papers has the following information: one NL8MPR socket low frequency pins 1+/1- low mid frequency pins 2+/2- high mid frequency pins 3+/3- high frequency pins 4+/4- Positive signal on speaker pin "+" produces positive waveform from driver (moves cone outwardly) "+" = In phase (high) "-" = Ground (out of phase, low) Lower numbers for lower frequencies. __________________ Kevin

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19th February 2012, 10:48 PM	#12
cyclecamper diyAudio Member Join Date: May 2010 Location: was Chicago IL, now Long Beach CA	"Positive voltage on the 1/4" tip should move the cone forward (away from the magnet) on a standard front loaded box." Check! Thanks! Now i'm confused. Are the NL4 marked 1/2/3/4 or 1-/1+/2-/2+ ?? I'm going to have to go to Guitar Center or someplace like that to get an NL4 plug, as my sockets are wired and covered with several layers of shrink-wrap, and mounted. I'll get a numbered plug and use my meter...

8th April 2012, 11:50 PM	#15
cyclecamper diyAudio Member Join Date: May 2010 Location: was Chicago IL, now Long Beach CA	OK I found the markings on a plug, so with a meter I can easily find the associated wire from the jack now. And + is also red for binding-post terminal strips?

9th April 2012, 04:06 PM	#17
cyclecamper diyAudio Member Join Date: May 2010 Location: was Chicago IL, now Long Beach CA	Yes, they work better than most, and the DPDT is just what's called for. But the risk of damage is also great. A toggle is pretty well protected if I recess it. But I don't think I'm going to bother with any switches anyway. Instead I would probably use some Neutrik jacks with plugs wired in various ways.