Home » Sponsored » Pi Speakers » Crap bought a bunch of worthless crossover parts
Re: Crap bought a bunch of worthless crossover parts [message #44993 is a reply to message #44989] Sun, 18 July 2004 00:28 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18774
Registered: January 2001
Illuminati (33rd Degree)

What you've shown here is right.
Re: Obviously, I stand corrected... [message #44994 is a reply to message #44988] Sun, 18 July 2004 00:39 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18774
Registered: January 2001
Illuminati (33rd Degree)

Actually, I rather agreed with you in that I wouldn't want to solder together all the resistors if I could avoid it. But in this case, James already had a bunch of the ten watt eights.


Thank You Wayne, I appreciate it very much!! Please look at the final as well. [message #44997 is a reply to message #44992] Sun, 18 July 2004 17:02 Go to previous messageGo to next message
James W. Johnson is currently offline  James W. Johnson
Messages: 199
Registered: May 2009
Master

This thing weighs a ton! I put large nuts and a washer under the resistors to prevent burning...oh yes these will indeed see some power! I am excited to fire them up!

Re: Thank You Wayne, I appreciate it very much!! Please look at the final as well. [message #44998 is a reply to message #44997] Sun, 18 July 2004 17:20 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18774
Registered: January 2001
Illuminati (33rd Degree)

I'm glad you wrote back 'cause I meant to say something else and forgot. Your writing reminded me to tell you to check everything from time to time. I know you like to put the power to these things. I do too, and I run a Crown Microtech 2400 so I can really push 'em hard.

I have the resistor banks mounted physically near a plastic plate used for my connector panel. The heat from the resistors has melted and deformed the plate. Sometimes I think about replacing it, but it is not really a problem so I don't. But I'm just saying that even when you build-up large blocks of resistors like this, they'll still get pretty hot when you put the power to them. So check them out from time to time.


Re: The finishing process is coming along nicely too...although quite slow. [message #45000 is a reply to message #44998] Sun, 18 July 2004 17:54 Go to previous messageGo to next message
James W. Johnson is currently offline  James W. Johnson
Messages: 199
Registered: May 2009
Master

Finish is teak veneer..

Re: Thank You Wayne, I appreciate it very much!! Please look at the final as well. [message #45001 is a reply to message #44998] Sun, 18 July 2004 18:09 Go to previous messageGo to next message
James W. Johnson is currently offline  James W. Johnson
Messages: 199
Registered: May 2009
Master

Thanks for the warning , I'll be sure and check them from time to time...meanwhile I think I have taken some good measures...here is a side view.
I had some resistors almost burn a whole thru a wood crossover board one time so I have learned my lesson. :-)


Sweet! [message #45002 is a reply to message #45000] Sun, 18 July 2004 20:30 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18774
Registered: January 2001
Illuminati (33rd Degree)

I love teakwood. Those are going to be gorgeous!


Re: Obviously, I stand corrected... [message #45007 is a reply to message #44994] Mon, 19 July 2004 10:43 Go to previous messageGo to next message
Larry Acklin is currently offline  Larry Acklin
Messages: 54
Registered: May 2009
Baron
I'm coming in late to this discussion.

2 ea 8 ohm in series = 16 ohm

2 of those series assemblies in parallel = 8 ohms

4 of the series assemblies in parallel = 4 ohms.

Thats too low, right?

Larry Acklin

Re: Obviously, I stand corrected... [message #45008 is a reply to message #45007] Mon, 19 July 2004 16:22 Go to previous messageGo to next message
Wayne Parham is currently offline  Wayne Parham
Messages: 18774
Registered: January 2001
Illuminati (33rd Degree)

You're right that (8) 8 ohm resistors connected as two groups of series/parallel blocks will yield 4 ohms. You can connect them up in other configurations too. But the mesh circuit shown in James' drawing yields 8 ohms. You can calculate it out using superposition.


Re: Sweet! [message #45012 is a reply to message #45002] Mon, 19 July 2004 21:13 Go to previous messageGo to previous message
James W. Johnson is currently offline  James W. Johnson
Messages: 199
Registered: May 2009
Master

Thanks Wayne...Got the veneer finished today...I applied the fronts this morning then came home at lunch and trimmed them then set the backs on. After work I finished up the trimming and began sanding..95% of the sanding is done. I'll start applying the Polyurathane finish tomorrow. :-)


I started a webpage for the Pis...
http://home.comcast.net/~bentvalve/pi.htm

Previous Topic: Theater 4pi Plans
Next Topic: What is the bolt size and length for mounting the PSD-2002 to the H-290?
Goto Forum:
  


Current Time: Sun Oct 06 22:21:08 CDT 2024

Sponsoring Organizations

DIY Audio Projects
DIY Audio Projects
OddWatt Audio
OddWatt Audio
Pi Speakers
Pi Speakers
Prosound Shootout
Prosound Shootout
Miller Audio
Miller Audio
Tubes For Amps
TubesForAmps.com

Lone Star Audiofest