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 Post subject: NEED HELP & GUIDANCE : BALDWIN RADIO PHONOGRAPH SPEAKER
PostPosted: Sat Aug 24, 2019 9:37 am 
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Victor Jr
Passionate abut preserving our rich heritage for tomorrow
Joined: Sat Aug 04, 2018 10:57 pm
Posts: 8
Hi there friends,I am much new to this hobby and very uninitiated, hence humbly seeking your collective guidance to resolve/overcome this challenge..

I recently bought an interesting phonograph attachment "BALDWIN RADIO PHONOGRAPH SPEAKER" .
This attachment output connects to the 'tone arm' of the phonograph (in the place of phonograph sound box, and plays the radio/ or any other music source through the phonograph horn.

The connection schematics are as follows:

Music source ------ INPUT <Amplifier> OUTPUT ---- : BALDWIN : ----- (Phonograph Tone arm)
(Either Radio or likewise)



Now the challenge is after the wiring when I play music through the amplifier, the music can be heard through the phonograph but it's very "F E E B L E".
How can I make the output amplify more.

Your valued insights are much appreciated. Warm regards

PS:
I am using a small amp with out put 8 Ohm, while the Baldwin speaker attachment is of 1600 Ohm.


Attachments:
File comment: The Baldwin Device attached to the tone arm
Baldwin Speaker for Phonograph.png
Baldwin Speaker for Phonograph.png [ 1.1 MiB | Viewed 212 times ]
File comment: The Baldwin Device
Baldwin Speaker for Phonograp.png
Baldwin Speaker for Phonograp.png [ 378.71 KiB | Viewed 212 times ]
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 Post subject: Re: NEED HELP & GUIDANCE : BALDWIN RADIO PHONOGRAPH SPEAK
PostPosted: Sat Aug 24, 2019 9:05 pm 
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Victor V
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Joined: Wed Dec 01, 2010 2:27 pm
Posts: 2687
Location: Northeast Pennsylvania
I think you need an impedance-matching transformer.

Sorry I cannot be more specific... :monkey:

Someone else will come along with more details...
De Soto Frank


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 Post subject: Re: NEED HELP & GUIDANCE : BALDWIN RADIO PHONOGRAPH SPEAK
PostPosted: Sun Aug 25, 2019 7:13 am 
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Victor VI
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I'm Feeling Cranky
Joined: Mon Mar 04, 2013 3:22 pm
Posts: 3202
Location: Livonia, NY
Deleted.
Francis; "i" for him, "e" for her
"Even a blind squirrel finds a nut once in a while" - the unappreciative supervisor.


Last edited by fran604g on Sun Aug 25, 2019 7:09 pm, edited 1 time in total.

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 Post subject: Re: NEED HELP & GUIDANCE : BALDWIN RADIO PHONOGRAPH SPEAK
PostPosted: Sun Aug 25, 2019 7:03 pm 
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Victor Jr
Joined: Mon Mar 25, 2019 11:50 am
Posts: 15
It is only a question of matching the impedance and this can be done with a Valve ( tube ) output audio transformer, there are sometimes universal output transformers giving 3 8 and 15 ohms on the loudspeaker side which will be your input side and several tapping's for the old tube anode output side often in the 1500 to 3000 ohm range.
As this is a low wattage unit you only need a small transformer, and one word of warning don't put too much power into the device as this could burn out the speaker winding.


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 Post subject: Re: NEED HELP & GUIDANCE : BALDWIN RADIO PHONOGRAPH SPEAK
PostPosted: Sun Aug 25, 2019 9:04 pm 
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Victor Jr
Passionate abut preserving our rich heritage for tomorrow
Joined: Sat Aug 04, 2018 10:57 pm
Posts: 8
many thanks guys for the insightful reply. Genuinely appreciated.


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