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Webcor 14X275 1 K Amplifier. Photos Wiring Diagram/Parts List Schematic. By: Michael R. Stiteler Mike@Stiteler.net. $29.99 Amp!. Webcor reel to reel amplifier. Purchased for $25. $29.99 Amp!. Now officially a guitar amplifier, after adding a freakishly

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webcor 14x275 1 k amplifier

Webcor 14X275 1 K Amplifier

  • Photos
  • Wiring Diagram/Parts List
  • Schematic

By:

Michael R. Stiteler

Mike@Stiteler.net

29 99 amp
$29.99 Amp!

Webcor reel to reel amplifier. Purchased for $25

29 99 amp1
$29.99 Amp!

Now officially a guitar amplifier, after adding a freakishly

powerful 140 Watt Technics Speaker (purchased for $4.99 at thrift store). Amp produces about 10 watts.

I use my “JamPlug” as a preamp, as this amp needs larger signal than pickups produce. If you count the JamPlug, the amp cost about $80.

I can turn the guitar signal all the way up, JamPlug signal down, and get a beautiful overdriven distortion…classic tube sound!

slide4

270 2W

22k 1/2W

1000 5W

10%

  • 9 Resistors (1 Ceramic, 8 Carbon); all 10%, 0.5W unless noted
    • 1000 5W Ceramic
    • 270 2W
    • 270k
    • 22k
  • 2 x 220k
  • 2 x 4.7k 1/4W
  • 2.7k 1/4W

6.3Vac

T1

253V

500V

T2

X5FRMC

JL.001

20%

115Vac

12AB5

RMC.011400V

2.7k 1/4W

253V

270k 1/2W

220k 1/2W

4.7k 1/4W

0.05 µf 400V

0.05 µf 400V

40 µf

400V

40 µf

25V

C

A

40 µf

350V

220k 1/2W

B

5Y3

4.7k 1/4W

12AU7

  • 5 Caps (1 = multi-section 3x40 µf )
    • 0.01 µf, 1400V (ceramic)
    • 0.001 µf, 400V? (ceramic)
    • 2 x 0.05 µf 400V
    • 3 x 40 µf (400V, 350V, 25V) Electrolytic(multi-section canister)
  • 2 Transformers
    • 1 Power Transformer (T1)
    • 1 Audio Transformer (T2)
  • 4 tubes
    • 1 x 5Y3
    • 1 x 12AU7 (12AX7 used for my amp)
    • 2 x 12AB5

12AB5