completed 100 k amp

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bigmik
Posts: 170
Joined: Thu Apr 26, 2007 9:12 pm
Location: bahamas

completed 100 k amp

Post by bigmik »

hey guys

just thought I would share a few photos of my 100 k amp that I finished on christmas eve .

she fired right up with no fireworks thankfully,pretty standard low plate skyline 100k od trimpot ,precision power supply ,twin iron from magnetic componets and the chassis from the recent chassis run{sweet chassis by the way]

the only thing was there was a slight grounding hum that went away when I turned on the bright swicth that appears to have been alleviated by removing the ground from the input jack ,but i'll believe it was that easy in a few days

voltges appear to be in spec 180's on v1 190 on v2 290's on the PI and 438 on PT plates I dont think I am going to do a thing to her for awhile until she has had some time to settle in but she sounds good already !

that's my story

MERRY CHRISTMAS TO ALL!!!




here is a few more build photos
http://good-times.webshots.com/slidesho ... 1588DSRDlA
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stelligan
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Re: completed 100 k amp

Post by stelligan »

Looks mighty fine! Can't think of a nicer Christmas present to one's self.
bluesfendermanblues
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Re: completed 100 k amp

Post by bluesfendermanblues »

Very Nice build!
bluesfendermanblues
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Re: completed 100 k amp

Post by bluesfendermanblues »

Where did you get the PSU's pcb's?
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bigmik
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Re: completed 100 k amp

Post by bigmik »

stelligan wrote:Looks mighty fine! Can't think of a nicer Christmas present to one's self.
thanks stelligan,who needs santa when you got a soldering iron
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bigmik
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Re: completed 100 k amp

Post by bigmik »

bluesfendermanblues wrote:Where did you get the PSU's pcb's?
I ecthed them ,this was my first time but it wasn't too hard


p.s how do you get two or more quotes in the same post?
CHIP
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Re: completed 100 k amp

Post by CHIP »

That's purdy! Nice work.
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M Fowler
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Location: Walcott ND

Re: completed 100 k amp

Post by M Fowler »

Nice job. I wish some one would offer a set of boards for that chassis.
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ChrisM
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Location: Toronto, Canada.

Re: completed 100 k amp

Post by ChrisM »

Nice looking building, clean.

+1 to supplier for boards. I have etched my own PCBs and ordered the eyelet from Nik.
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heisthl
Posts: 1800
Joined: Fri Sep 29, 2006 5:35 am
Location: Phoenix

Re: completed 100 k amp

Post by heisthl »

bigmik wrote:
bluesfendermanblues wrote:Where did you get the PSU's pcb's?
I ecthed them ,this was my first time but it wasn't too hard


p.s how do you get two or more quotes in the same post?
bigmik wrote:
stelligan wrote:Looks mighty fine! Can't think of a nicer Christmas present to one's self.
thanks stelligan,who needs santa when you got a soldering iron
Easy way to do multiple quotes is right click on the "Quote" icon and select "open in new window". Then go to the next one and do that again. Now you can cut and paste between the 2 windows.

Beautiful work - why buy new when you can build it (hopefully for less).
Former owner of Music Mechanix
www.RedPlateAmps.com
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Structo
Posts: 15446
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Location: Oregon

Re: completed 100 k amp

Post by Structo »

Beautiful build!

Is that Teflon wiring?

I notice you didn't include the 220K/250pf network on the Send/ Return jacks?

Have you tried that and not liked it?

I'm getting ready to build a Dumbleator and was concerned about that.
Tom

Don't let that smoke out!
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ChrisM
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Location: Toronto, Canada.

Re: completed 100 k amp

Post by ChrisM »

^That filter was unique to #124 it seems.
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glasman
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Location: Afton, MN (St Croix River Valley)
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Re: completed 100 k amp

Post by glasman »

Very nice workmanship!!

Etching boards can be fun!. I have a RAT tube tester that I layed out, need to get it transferred and etched this week. Nothing like the smell of hot ferric chloride in the morning.
Located in the St Croix River Valley- Afton, MN
About 5 miles south of I-94
aka K0GWA, K0 Glas Werks Amplification

www.glaswerks.com
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Structo
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Location: Oregon

Re: completed 100 k amp

Post by Structo »

ChrisM wrote:^That filter was unique to #124 it seems.
Really?

I did not know that.

I do see on a couple other schematics (#123) that there is sometimes a 100K in series with the Send jack.
Between the Master wiper and the jack.

On the early 80's Grail schematic is has the 220K/250pf on the jacks but appears to be incorrectly drawn if it is supposed to be like #124.

ODS 101 has a 220K in series.

Here is the picture of #124.
Notice how the brown wire from the Master goes to the shunt lug on the Return jack?
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Last edited by Structo on Sat Dec 26, 2009 7:19 pm, edited 1 time in total.
Tom

Don't let that smoke out!
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UltraHookedOnPhonix
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Re: completed 100 k amp

Post by UltraHookedOnPhonix »

Beautiful build! Now go plug that IEC hole up! :lol:
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