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

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

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

joshwilson3
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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
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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.
Gear:
'74 Super Lead rebuilt with '68 metro board and old stock mustards.
'73 Super Lead
'68 Basketweave with pre rola G12Ms
'70 Basketweave

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rockstah
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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?

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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

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

Good question. I'd like to hear them too.
Cheers to the ears.

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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

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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

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guitar007
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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?
~guitar007

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chubs
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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

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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
LIFE IS TOO SHORT FOR A BAD TONE!!

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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?

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

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.
Last edited by jamme61 on Wed Jun 03, 2009 7:18 am, edited 1 time in total.

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

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
The fault almost always is sitting in front of the amp :wink:

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

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.

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