Welcome Guest! Be sure you know and follow the Phorum Rules before posting. Thank you and Enjoy! (January 12) x

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

Philco 38-690 input jack
#14

I'm a little surprised that you do not get full volume from the CD player.  If you put the input jack just before the volume control, there should be plenty of gain for a "line level" input.  Are you using a CD Deck or the headphone output of a portable CD Player?  If you have access to a component preamp, this may be useful. A "Mono" cord? If the 3.5mm plug is only "TS" (tip and shank or tip and shield, then this type of cable will short one channel out. This may lower the sound and damage the CFD Player. Either of the 2 diagrams (placed there while I took a break from typing this) will work. The second one is easier and cheaper to build. In the diagram that uses resistors, values for RMix 1 and RMix 2 of 75-150 Ohm will suffice.

I did this to a Crosley 02CA.  The Customer liked to play jazz guitar and liked the sound.  Of course, he also used this as a radio.  Yes, granted that he could not duplicate Jimi Hendrix or (Lord help us) Led Zeppelin.  The "mod" done to this unit was to make it like the similar 02CQ which had a switchable phono input.  The input was put between the detector and volume control.

I don't have a great home transmitter.  I have a Talking House transmitter and a Vectronics Kit transmitter.  I don't expect full HiFi but I have never been as impressed with AM reception from these transmitters as I have been with direct connect.  My guess is that the relatively low Broadcast frequency, the low IF frequency and the distortion of a detector subtract from signal quality.

"Do Justly, love Mercy and walk humbly with your God"- Micah 6:8
"Let us begin to do good"- St. Francis

Best Regards, 

MrFixr55


Messages In This Thread
Philco 38-690 input jack - by supertech - 12-17-2024, 10:04 PM
RE: Philco 38-690 input jack - by MrFixr55 - 12-18-2024, 11:12 AM
RE: Philco 38-690 input jack - by supertech - 12-18-2024, 11:23 AM
RE: Philco 38-690 input jack - by MrFixr55 - 12-19-2024, 09:50 AM
RE: Philco 38-690 input jack - by radiorich - 12-19-2024, 10:33 AM
RE: Philco 38-690 input jack - by RGK20m3 - 12-22-2024, 11:40 AM
RE: Philco 38-690 input jack - by morzh - 12-22-2024, 11:52 AM
RE: Philco 38-690 input jack - by supertech - 01-06-2025, 02:28 PM
RE: Philco 38-690 input jack - by David - 01-06-2025, 07:02 PM
RE: Philco 38-690 input jack - by supertech - 01-06-2025, 07:11 PM
RE: Philco 38-690 input jack - by David - 01-06-2025, 07:43 PM
RE: Philco 38-690 input jack - by supertech - 01-06-2025, 08:26 PM
RE: Philco 38-690 input jack - by David - 01-06-2025, 09:42 PM
RE: Philco 38-690 input jack - by MrFixr55 - 01-06-2025, 11:15 PM
RE: Philco 38-690 input jack - by fenbach - 01-08-2025, 01:44 PM
RE: Philco 38-690 input jack - by Arran - 01-09-2025, 03:48 AM



Users browsing this thread: 1 Guest(s)
[-]
Recent Posts
HiFi (Chifi) tube amp build - but my own design.
Tim, I have some bakelite sockets in my work shop that I can dig up. I believe quite a few are NOS. I will take photo...RodB — 10:03 PM
Philco 610B oscillator wiring
> The cathode as noted is wired directly to the ground side of the heater filament for that tube, not to the #17 and ...Radioroslyn — 08:12 PM
HiFi (Chifi) tube amp build - but my own design.
Tim; I noticed your post a little late, but I would take one of the junk sockets and try to break a chunk out of it wi...Arran — 08:07 PM
Need to purchase some accessories for restoration of my Old Philco Radio
Here is a list of resources found in our online library that you might find useful. Mike's Gobs of Knobs email addres...klondike98 — 01:46 PM
First Radio restoration
Hi Tubeman, Welcome to the Philco Phorum.  Phamily Phriendly Pfun with Phine Pholks Phull of Philco Phacts. (See a p...MrFixr55 — 12:33 PM
First Radio restoration
You could post in the WANTED ADs section here on the Phorum and see if anyone has an RF generator that they want to sell...klondike98 — 11:55 AM
Zenith H725
Good ideas, thank you Arrange and Rich. I have the adhesive aluminum foil already and can try that immediately. More ...EdHolland — 10:18 AM
Graphics for majestic 1050 dial glass.
Murf; I found this thread on the ARF, the first photo has a pretty good view of the dial glass. Regards ArranArran — 01:12 AM
Zenith H725
hello Ed, how about that speacial tape used for ducting it's like foil or how about thin piece of aluminum roof flash...radiorich — 12:19 AM
Zenith H725
Ed; One material that I have seen, but never tried for this was material for making exhaust gaskets, it's similar to ...Arran — 11:42 PM

[-]
Who's Online
There are currently 1657 online users. [Complete List]
» 2 Member(s) | 1655 Guest(s)
AvatarAvatar

>