10-28-2021, 10:15 AM
Understood. Both the RCA and Philco speakers are high impedance - I don't remember the exact numbers, but somewhere around 2000 ohms impedance - and either will work with the 511.
Philco 211 Series speakers used pot metal parts, and as a result, most are now inoperative. On the other hand, the RCA 100 series of speakers (100, 100-A, 100-B, 103) were made with better materials and are often still good.
Be aware: the RCA speakers have a "Tone Filter" that filters out the low notes, so it will sound much like a horn speaker (all treble, no bass). Not that the Philco speakers were any better (they weren't).
Philco 211 Series speakers used pot metal parts, and as a result, most are now inoperative. On the other hand, the RCA 100 series of speakers (100, 100-A, 100-B, 103) were made with better materials and are often still good.
Be aware: the RCA speakers have a "Tone Filter" that filters out the low notes, so it will sound much like a horn speaker (all treble, no bass). Not that the Philco speakers were any better (they weren't).
--
Ron Ramirez
Ferdinand IN
![[-]](https://philcoradio.com/phorum/images/bootbb/collapse.png "[-]")
