The Fine Things are Always Hand Made
Were Philly's modified in later production runs without updating the schematic?
I found the IF AGC tube's cathode grounded rather than connected to ground through a 600 ohm resistor with a bypass cap as shown on the Rider's schematic.
Was this a factory change or the result of some one before me making changes?
I powered it up today using my modified organ 15 inch pedestal speaker and it plays on AM nicely.
My B+ voltages are a bit low per the spec(using line voltage) but I think they are just fine as is:
250V is 240V
375V is 362V
410V is 381V
430V is 390V
I have some loose ends to address before I get ready for the alignment:
1. My dial lights are messed up. One dims when I turn the band switch so I suspect dirty connections on the switch. (or maybe I have a short?)
2. Didn't get any SW reception, but I am not sure which band is which (I have the dial plate off the set right now as I am going to replace it. The BS escutcheon is labeled A, B, C, D, E P. Do these letters correspond to UHF, LW, Police, AM, SW1, SW2? I think I am getting AM on Position D if I remember correctly.
3. BTW, I am missing the cover for one of the edge lamps. Anyone know where I can find one? (This is the lamp that dims on one of the BS positions.)
Will keep you posted on progress.
Bill L was restoring a 30 tube Philly for me and it arrived today and I have it all hooked up and playing for the past 5 hours. It sounds wonderful playing OTR Sherlock Holmes shows. I have a Tauscher sound board covering the speaker to tone it down a bit.
The set sounds wonderful and all the 9 controls work as if original. Bill's workmanship was 1st rate too under the hood. This was the set sold by Habitat for Humanity in Aspen Co. Norman B advised them on a value and I purchased the set as soon as I heard about it. It was installed in a 1933 Capehart 300 cabinet and was filthy with 40 years of dust and dirt. The speaker was set up for a 2nd remote speaker with a variable volume control which I removed today and reset the speaker to original 38 ohm settings. Once cleaned up the chrome is stunning and the original speaker is A-OK too and sounds great
Glad you're happy with it Bruce. I'd like a full report once you run it through it's paces.
Looks super. I'm sure Bill did a great job for you. He's been helping me with mine. Should have mine done tomorrow or Monday. So far it sounds good.
BTW what do the extra 2 knobs do? (Mine only has 7 knobs.)
The one on the upper right is a switch to turn the scratch suppressor on/off. Really just a relocation of the pull out switch that is under the tuning knob on the 7 knob version. The control on the upper left is what Scott called the Fidelity control- really just a treble control.
My work bench test drive station is the coffee table in my living room. The Philly was so powerful the speaker was too loud for my tastes so I put on the Tauscher board to tone it down a bit and I may be in the minority but it sounded fine to my ears on OTR shows.
I thought it reduced the higher treble tones some and sounded more realistic plus it prevented me accidentally poking any holes in the cone. Usually I have it hung on the wall as a display piece. This one has 3 separate wood rings in it on the back that fit into the speaker cone.