So for anyone intersted in the Webb upgrade, this is the whole list to the best of my knowledge right now. I'll be posting a marked up schematic real soon so you can see which ones are addressed. Some of the caps in the Webb are hi-grade film caps and can stay there. The marked up schematic will indicate which ones stay and which ones go. I think the total price for all these caps is about $52 + shipping.

Enjoy!,

Brad Sarno

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Order these cap’s from Mouser.com
(these are Mouser part numbers)

Part# 75-KP1830310063-TR
Vishay/Roederstein Polypropylene Film Capacitors
0.01uF 63V 2.5%
$ 0.980
quantity -2

Part# 75-MKP1837322161
Vishay/Roederstein Polypropylene Film Capacitors
.022UF 160V 1%
$ 1.300
quantity - 4

Part# 1436-2473
Xicon Radial Metallized Polyester Film Capacitors
250V .047uF
$ 0.260
quantity - 3

Part# 140-PF2A104F
Xicon 2% Radial Polyester Film Capacitors
CAP 100V .1uF
$ 0.720
quantity – 2

Part# 1436-4105
Xicon Radial Metallized Polyester Film Capacitors
400V 1.0uF
$ 1.250
quantity – 6 (includes 2 for power supply cap bypassing)

Part# 75-MKT1822522015
Vishay/Roederstein Metallized Polyester Film Capacitors
2.2uF 100V 10%
$ 1.860
quantity - 2

Part# 647-TVX2A100MAA TVX2A100MAA
Nichicon Axial Aluminum Electrolytic Capacitors
100V 10uF 6.3X12
$ 0.200
quantity - 1

Part# 647-TVX2A470MAA
Nichicon Axial Aluminum Electrolytic Capacitors
100V 47uF 8X20
$ 0.310
quantity – 8

Part# 647-TVX2A101MCA
Nichicon Axial Aluminum Electrolytic Capacitors
100V 100uF 10X26
$ 0.510
quantity 1

Part# 647-UVR2A101MPA
Nichicon UVR Radial Aluminum Electrolytic Capacitors - 85 Degree
100V 100uF 10X20
$ 0.580
quantity – 2

Part# 647-TVX2A221MCA
Nichicon Axial Aluminum Electrolytic Capacitors
100V 220uF 13X26
$ 0.770
quantity - 3

Mouser subtotal $27.26

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DIGI-KEY order (digikey.com)

Order the 2 power supply cap’s from Digi-Key

Digi-Key Part Number P10037-ND
Unit Price
$12.03 each
Manufacturer Part Number ECE-T2AP822EA
Description CAP 8200UF 100V ELECT TUP SERIES
Technical/Catalog Information P10037-ND
Category Capacitors
Vendor Panasonic - ECG
Capacitance 8200µF
Voltage-Rated 100V
Tolerance ±20%
Series T-UP
Package / Case Snap In
Packaging Bulk
Features Large Can Type
Maximum Temperature 85°C
Other Names ECET2AP822EA
P10037

If the amp is old there are 6 electrolytics on it that could use replacing.

4 - 1uF/50v (you can use the same 1uF film caps on the big list)

2 - 50uF/25v (or just order more of the 47uF/100v from the big list).

There are some cheap ceramic caps in the tone stages of the EQ, but I'll leave them alone for now.

The reason that I'm kind of ignoring the graphic EQ is that many people dont use it and Jim Webb recommends not using it unless really necessary. It's a 5 stage cascade type EQ and the signal gets sort of degraded 5 times when passing thru it. On theory alone I tend to avoid it since the rest of the Webb is so pure and clean. BUT, ears dont lie and apparently many people (like Jimmy Day and Tommy White) like to have the EQ in the circuit because it adds something good. I hear it too. So in the spirit of that fact, I think it should be left alone. The sort of grainy edge that the EQ section creates is a nice musical tool that can be left that way as a tonal option. It's completetly bypassed when switched out. The main part of this Webb cap mod is meant to seriously clean up the already sweet sounding preamp and power section of the 614-E. So you can have the ultimate clean Webb with the graphic EQ coloration as an option.

Brad Sarno

thx

bob