Posts: 37
Threads: 5
Joined: Jan 2019
City: Ranger
State, Province, Country: Ga
Greetings,
So this nice little RCA jack they put on the phono transformer is very convenient in today's world, however when I plug into it and play through my phone the signal is very weak and seems un-amplified, is that normal or should it be amplified like the radio? Also what would that plug have been used for in 1941? Thanks in advance
Posts: 271
Threads: 12
Joined: Nov 2005
City: Nashville, TN
Hi,
Most players or phones have a low impedance output. The phono input may have been designed for a higher impedance device, and there will be a mis-match. I know what you're talking about though, you have to turn the player on full, and the radio almost full to hear it.
Some have used a matching transformer between the input and the output of the player.
Also, you have to combine or 'sum' the left and right outputs of the player. I've used a couple of 2K to 5K resistors in series with the L and R outputs, then feed that mono signal into an input. That though will not solve your impedance match.
We don't know the model of RCA you're using. But that generally, is what the issue is. The radio/amp input is looking for a high impedance source, and your player is low impedance. Take care.
Posts: 1,523
Threads: 240
Joined: Sep 2012
City: West Bend, Wisconsin
Here's what I use to combine the left and right channels for radios equipped with an RCA jack for phono input:
the cable:
https://www.amazon.com/gp/product/B00GXQ...UTF8&psc=1
and the splitter:
https://www.amazon.com/gp/product/B004C8...UTF8&psc=1
Greg V.
West Bend, WI
Member WARCI.org
Posts: 37
Threads: 5
Joined: Jan 2019
City: Ranger
State, Province, Country: Ga
Great info ,thank you, Ill pick up a splitter and see if that helps the situation any
Ryan