Posts: 1
Threads: 1
Joined: May 2016
City: ATHENS OH
I have recently acquired a Philco Lowboy 45. The cabinet is in good shape, but the only thing left inside is the speaker. I tested it, it's not blown but is just really quiet. I'd just like to know more about the parameters of the speaker (power handling, impedance, etc). If anyone has anything, that'd be great. Thanks.
Posts: 5,170
Threads: 274
Joined: Nov 2012
City: Wilsonville
State, Province, Country: OR
Welcome to the Phorum!
Ron has collected and posted (see the speakers.zip file) speaker information, unfortunately unless I missed it I only see the 5" speaker for the 45C model, not your 45L. Perhaps someone will have the info.
Posts: 2,118
Threads: 112
Joined: Jun 2010
City: Medford OR (OR what?)
It is most likely that your speaker is "quiet" because the field coil is not being charged. The old speakers did not use a permanent magnet. So without the radio to supply power it has no magnet.
"I just might turn into smoke, but I feel fine"
http://www.russoldradios.com/
Posts: 5,170
Threads: 274
Joined: Nov 2012
City: Wilsonville
State, Province, Country: OR
Posts: 16,506
Threads: 572
Joined: Oct 2011
City: Jackson
State, Province, Country: NJ
Before we go on a wild goose chase why don't you tell us HOW exactly you tested it.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Posts: 13,776
Threads: 580
Joined: Sep 2005
City: Ferdinand
State, Province, Country: Indiana
The 45L speaker is K-22, which is in the speaker index - only the 45L is not listed as using it.
Good catch, Bob. I'll have to correct that after K-town.
--
Ron Ramirez
Ferdinand IN
Posts: 670
Threads: 11
Joined: Sep 2014
City: Bellmawr, NJ
May NOT be the speaker,,could be capacitors,,resistors,,,if have not be replaced,,check tubes,,etc,,
Posts: 16,506
Threads: 572
Joined: Oct 2011
City: Jackson
State, Province, Country: NJ
Ken
He kinda said there is only speaker in there. Implies no chassis, inferring no capacitors, resistors or tubes. Unless I am missing something
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
Posts: 670
Threads: 11
Joined: Sep 2014
City: Bellmawr, NJ
Apparently,,,I missed that ALSO-------SORRY
Users browsing this thread:
|
Recent Posts
|
Testing a speaker and output transformer Trutone A2-G
|
morzh
Short-circuited turns can be considered as a half-dead transformer.
But on this case transformer will hot and s...Vlad95 — 11:01 AM |
Testing a speaker and output transformer Trutone A2-G
|
I am not sure how a transformer could be weak. It could be inadequate, but only when you replace the original with somet...morzh — 09:56 AM |
Philco model 38 code 121 not receiving signal.
|
Good news everyone! I think I have found everything I need for rewinding the antenna coil primary.
I found some pla...Stormlord5500 — 09:40 AM |
Philco Battery-WWII vintage
|
My younger sister went to SUNY Plattsburg NY, (BS, MS, RN) in the late 1970sabout 10 min from the Northern NY / Canada b...MrFixr55 — 07:59 AM |
Philco Battery-WWII vintage
|
Hello Bob,
What Amazing find!
Sincerely Richardradiorich — 10:19 PM |
Testing a speaker and output transformer Trutone A2-G
|
Hi Murf,
Do this:
Monitor between ground and one plate of the rectifier while playing the radio. Do the same with ...MrFixr55 — 09:51 PM |
Philco Battery-WWII vintage
|
Mike;
I take it that Soviet cars did not come equipped with block heaters, hence the hot oil change? Where I lived in...Arran — 08:42 PM |
Philco 42-345 Restoration/Repair
|
The more the better. (Within reasonable limits.)
2-5 times more is no problem in this case.Vlad95 — 03:50 PM |
Philco 42-345 Restoration/Repair
|
Thanks, RodB and Vlad95,
I was mainly trying to figure out this capacitor to locate a replacement, Vlad thank you for...osanders0311 — 03:44 PM |
Testing a speaker and output transformer Trutone A2-G
|
Would an output transformer if weak, cause the problems I am seeing with lower B+ voltage?
murfmurf — 01:22 PM |
Who's Online
|
There are currently 762 online users. [Complete List] » 2 Member(s) | 760 Guest(s)
|
|
|

|