View Full Version : Rare Admiral 12" chinese combination cabinet

Bill Cahill
05-15-2017, 11:54 PM
I am having problems posting pictures. Perhaps Karma Kiri can help. He had the set. He sold it to me a couple of years ago, and, I paid shipping.
Not sure of chassis number It uses a 12JP4 tube with an ion trap. Radio is AM, FM. Two speed player, and a deluxe PP audio amplifier...
This set I haven't started yet. I'm getting an itch to start rebuilding this summer, or, fall.
This is an interesting set to look at. It seems to be a 1948 model.
What do you guys know about this set? Can anyone find me correct factory schematic, and, information?
Bill Cahill
Made a mistake in typing brand. It's an Admiral.
Bill Cahill

05-16-2017, 08:55 AM
I think you mean 12LP4 CRT. I'm thinking it's a 1949 model 4H18 or 4H19.

That uses a 20b1 chassis. Service info courtesy of the ETF here:

Sams 77-1:
Riders TV Vol4:
Admiral service supplement:

05-16-2017, 06:48 PM
As I recall, the tube in that set isn't a 12LP4. Might be a 12HP4 or 12QP4. It's an uncommon tube, whatever it is.

05-17-2017, 08:49 AM
I dug through the service info and see that they did use 12BP4, 12LP4 and 12TP4 with the 20B1 chassis.

Bill Cahill
05-22-2017, 03:47 PM
I've had this set for over two years, and, haven't touched it yet. This set really looks impressive to me. It starts with an AM-FM radio, a 2 speed changer, 78 rpm, and, 33 rpm, and, a 12" picture in a black painted Chinese style cabinet with decorations on both doors. The original speaker grill cloth is black with white speckles...
The tv uses a Dumont 12JP4 picture tube that Admiral has put a stamp on the back of the chassis stating that you cannot use any other other type of tube in it.
The only bad thing about this set that is bad it the tuner looks alike an RCA Victor tuner..
The powere suppliesare in the bottom of the cabinet. This chassis has a 5U4 doubles for tv. The radio is powered up with a separate power supply with a pair of 5Y3 rectifiers.The audio amp consists of two 6V6 GT audio output tubes for audio output,driven a 6SQ7 and, I believe a 6SL7 for ausio. This drives a 12" speaker.....
This is a really neat set... :tresbon::banana:
Bill Cahill

Bill Cahill
05-23-2017, 10:56 PM
I got this set, and, a nice Bendix combination ten inch tv, radio, and, record player. I'm lucky to have the original door covering some of the controls.
These were shipped to me by our friend in NY, and, I paid the shipping, as well.
I'm now waiting to buy another tv from him.
Admiral 7". I'll love having it.
Bill Cahill

Bill Cahill
05-23-2017, 11:04 PM
I think Karma Kiri may be right. It might be a 12QP4. The factory rubber stamp warns against using other tubes. The big difference is the second anode, which has the Dumont type connector to a pin sticking out no tube. There is also no capacitance grounding.

Bill Cahill
06-01-2017, 04:49 PM
Here are some things that are different about this set.
Push -Pull audio output 6V6 tubes in power supply.
AM-FM radio chassis.
Deluxe two speed changer....
This must be a nice set when finished.
Bill Cahill

Bill Cahill
06-24-2017, 10:22 AM
Does anyone have an extra back cover for tv section they would sell me? Thanks Bill :yes: