Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5

Philco 41-608. Correct wiring of bass control
#1

Hi,
I am replacing the bass control (6.0Meg) on this chassis and I'm not sure which components were connected to which ends. The wiper of the pot is at ground. I want to make sure my bass is increasing as the pot is rotated clockwise. So should the wiper end then be going to the upper or lower end (looking at the schematic) as you increase the bass tone? Another way of putting it is should the .004 cap from the plate of the 7C6 become grounded (via the wiper) when bass is maximum or minimum?
Hope this isn't too confusing.. just want to get it right... lost track of which leads were on which end.
Thanks very muich!
Harlan Icon_biggrin
#2

OK, assuming you are looking at the back side of the pot...

Connect capacitor (65), .004 uF, to the left terminal.
Ground to the center terminal.
The right terminal to the junction of capacitor (56) and resistor (57).

When the control is at full clockwise (CW), the wiper will be at the end connected to capacitor (65), .004 uF and you will have full bass (minimum treble). This is how you want to wire the control.

--
Ron Ramirez
Ferdinand IN
#3

Hi Ron,
Thanks very much for the clear expanation and your speedy reply... really appreciate all your help.
Have a great day.




Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
Philco 60 Squealing
I have recapped and replaced out of tolerance resistors and so on. Radio plays nicely on fairly strong stations. The pro...dconant — 10:55 AM
Philco 46-420 Code 121 Reception issues
Welcome Eric, I agree with Bob and far as the two main electrolytic filter capacitors did you change them yourself or w...radiorich — 11:43 PM
Philco 46-420 Code 121 Reception issues
You mentioned the Philco manual and going through the check points...just to be sure we're on the same page here's the m...klondike98 — 08:13 PM
Philco 42-1008 conversion kit
Interesting. I haven't seen that before.klondike98 — 07:02 PM
12' Philco
Yes I had looked for it on the web as well some time back and could not find it. I was glad to see it turned up in Ron'...klondike98 — 06:59 PM
Shadow Meter Bulb
Now if you had a set with a tuning light then the bulb type is important to the circuit, some sets used those prior to t...Arran — 04:58 PM
Shadow Meter Bulb
Ok. Thanks for the correction.RossH — 03:09 PM
Model 28L
For 28 you will probably need to buy a Hammond 125CSE. Or any of the series of the power you need, with SE suffix. Then ...morzh — 02:09 PM
37-60 revision 6
I am restoring a Philco 37-60 and it shows run 6 they removed the ground from G3 of the 6K7G and put the G3 to -2.5v for...bobbyd1200 — 01:01 PM
Shadow Meter Bulb
Mike is correct on the bulb connection, two separate circuits. I found that by rotating the bulb and sliding it forward ...RodB — 12:19 PM

[-]
Who's Online
There are currently 3051 online users. [Complete List]
» 3 Member(s) | 3048 Guest(s)
AvatarAvatarAvatar

>