FRED!

rgalpin · Post by **rgalpin** » Tue Oct 02, 2007 9:03 am

I'm diggin' these FREDs - faster diodes for the rectifier makes a big difference - check 'em out. They're different. They're like VIAGRA for yer amp. Makes it stand up in places where it used to go limp.

http://www.soundclick.com/bands/songInf ... ID=5831034

45auto · Post by **45auto** » Tue Oct 02, 2007 9:19 am

dude, you ought to get paid for some this research! who in the world has clips with different components demonstrating what the changes actually sound like. again, too cool.

Tone Slinger · Post by **Tone Slinger** » Tue Oct 02, 2007 10:46 am

Sounds great ! what was the set up ?

rgalpin · Post by **rgalpin** » Tue Oct 02, 2007 1:44 pm

more details at:
http://forum.metroamp.com/viewtopic.php?t=14053

T.J.Fuller · Post by **T.J.Fuller** » Wed Oct 03, 2007 9:32 pm

Rob I have a question, and I hope it's not too stupid of one.

I have been pounding this electronics stuff into my head for nearly a year to make sure I have a solid grip theoretically before building an amp.

..but I notice in some of pics people have posted of vintage plexi amps
the rectifiers in some of those pics are not 4 diodes but, it looks like a black square ??

Is this a FRED diode?

and if not, what are those types of diodes ?

Oh .... and your clip Outta Love Agiin.......solid!!!!....always good stuff!!!!

rgalpin · Post by **rgalpin** » Thu Oct 04, 2007 9:37 am

coolthanks.

the rectifiers in some of those pics are not 4 diodes but, it looks like a black square ??

i don't know what that rectifier set up is - maybe someone will chime in. if you find out what it is, let me know. i'm looking for a solution that is in between the slow diodes and the FREDS.

mine looks very similar to the pic posted in the FRED THRED.

http://forum.metroamp.com/viewtopic.php?t=12141

wdelaney72 wrote:

ScottW · Post by **ScottW** » Thu Oct 04, 2007 12:35 pm

The black square is just a rectifier block that functionally is the same as 4 diodes. It has two inputs that each have this mark: ~ and also has a + and a - where the + is your B+ rail going to your first filter cap, and the - is your ground. I think it's just four 1N4007 equivalent diodes in one black box....

novosibir · Post by **novosibir** » Fri Oct 12, 2007 3:53 pm

No, these have only two leads and are 6A or 10A FRED's.

Larry

T.J.Fuller · Post by **T.J.Fuller** » Fri Oct 12, 2007 4:46 pm

novosibir wrote:No, these have only two leads and are 6A or 10A FRED's.

Larry

Are you talking about Bridge rectifiers? I found out that's what the black squares are called.

..or what Rob is using in his current amp?