REVIEW (long): Caps, resistors & parts on my 1987x board

Guest · Post by **Guest** » Tue Jun 28, 2005 11:35 am

gnugear,
Are the Freds worth it? Did they increase your dynamics?

joshwilson3 · Post by **joshwilson3** » Sun Jul 24, 2005 5:38 am

Guest wrote:gnugear,
Are the Freds worth it? Did they increase your dynamics?

I would like to know this too.

thanks

gnugear · Post by **gnugear** » Mon Aug 08, 2005 1:43 pm

I like them ... they seem faster and a little more clear.

I have two amps set up the same way and the one with Freds sounds quicker.

rockstah · Post by **rockstah** » Fri Sep 23, 2005 6:37 pm

very interesting thread here thanks for the great review.
and the tone you like is the evh tone correct?

Himmelstrutz · Post by **Himmelstrutz** » Fri Apr 14, 2006 7:25 am

Great review, and your patience must be fantastic gnugear! One question though: is the clips available and explained somewhere?

/Himmelstrutz

jnewlyn · Post by **jnewlyn** » Sat Apr 29, 2006 3:41 pm

Good question. I'd like to hear them too.

bluze81 · Post by **bluze81** » Fri Oct 20, 2006 11:54 am

Hi Gnugear I agree with you about the fred diodes, I have them in a 1987x modded to ptp and those diodes really made a difference ,no harsh highs really smooth with a bit of sag that suprized me. when I first got the amp it was stock and sounded awfull really harsh and hard no matter what tubes. Bluze

guitar007 · Post by **guitar007** » Sun Jun 17, 2007 3:24 am

Does anyone have a pic on how these FREDs are wired up? How many would you need for a '68 12k build? 4?

guitar007 · Post by **guitar007** » Sun Jun 17, 2007 3:25 am

Does anyone have a pic on how these FREDs are wired up? How many would you need for a '68 12k build? 4?

chubs · Post by **chubs** » Fri Sep 21, 2007 12:47 pm

They look and install the same as a regular 1N4007 Diode, but are fast recovery diodes.

See attached jpeg.

Here is the datasheet:
http://www.weisd.com/store2/nte575.pdf

hotguit · Post by **hotguit** » Fri Feb 01, 2008 4:37 pm

Hi
i replaced 1N4007 with WISHAY UF5408 ultrafast recovery diodes
Great clear tone
bye
Hot

joshwilson3 · Post by **joshwilson3** » Sat Mar 01, 2008 6:43 am

hotguit wrote:Hi
i replaced 1N4007 with WISHAY UF5408 ultrafast recovery diodes
Great clear tone
bye
Hot

Where did you get your Vishay UF5408 from?

jamme61 · Post by **jamme61** » Tue Jun 02, 2009 6:38 pm

I have the FREDS in my 1987 RI and I don't hear a difference. To be honest I don't hear a big difference in most of the things I have done, to my amp. I went from stk board, to a metro PTP (this was great for modding, but sound difference, I didn't hear it) I went to sozo's, (not a biggie) then Mustards (still not much difference) then a new OT, less filtering, slight difference. I guess it all adds up but, i think the major changes can be, the bright cap on the volume pot and the NFB resistor value. after that, you can mess forever (get a PTP for this) with different values. I guess if you hear a difference and it makes you happy, great.

novosibir · Post by **novosibir** » Tue Jun 02, 2009 9:04 pm

jamme61 wrote:I guess if you hear a difference and it makes you happy, great.

You should be happy, because when you can't hear differences which others can hear, then you'd save lots of money in your future life... cheaper guitars, cheaper amps, cheaper speaker cabs, aso.

Larry

_ben · Post by **_ben** » Wed Jun 03, 2009 5:06 am

If you have bad cables between your head and your cab and bad wires inside your cab you didn't hear any difference just the color of the wires/cables.

Metropoulos Forum

REVIEW (long): Caps, resistors & parts on my 1987x board

Re: REVIEW (long): Caps, resistors & parts on my 1987x board

Re: REVIEW (long): Caps, resistors & parts on my 1987x board

Re: REVIEW (long): Caps, resistors & parts on my 1987x board