I am repairing some old speakers. Each one has 3 speakers in the case.
One is the lower range 3.5 inch
Another is mid range? 2 inch across
third is a tiny tweeter about 3/4 inch across.
they look just like this, 4 ohm 200 watt rating Phase III.
I painted mine walnut color.
http://www.ebay.com/itm/PHASE-III-M...pt=Vintage_Electronics_R2&hash=item53e9adc5d5
Anyway the midsized 2 inch speakers have failed due to corrosion and paper cones rotted.
I was thinking of replacing with these 2 inch unites which I bought.
http://www.ebay.com/itm/Two-Unites-...er_MP3_Player_Accessories&hash=item257652929b
Do you think they will substitute ok?
How does the power rating come in here?
These ebay speaker look identical, same sized ceramic magnet.
One of the original 2 inch speakers also has a broken coil wire, and that wire is extremely fine. They did not use braided copper to connect to the cone, just tiny wire from coil direct to the solder lug. I dont see how that tiny wire could carry much power. That wire corroded and broke.
The original speaker is also completely sealed, no slots on backside.
The Ebay speakers are more standard with the braid and slotted open steel housing.
These Phase III speakers have a single bipolar capacitor in series with the negative wire of both tweeter and midrange speaker. The polarity is also reversed from the woofer and the other two.
Here they are painted. One is missing its 2 inch speaker. The other one I repaired the 2 inch speaker.
One is the lower range 3.5 inch
Another is mid range? 2 inch across
third is a tiny tweeter about 3/4 inch across.
they look just like this, 4 ohm 200 watt rating Phase III.
I painted mine walnut color.
http://www.ebay.com/itm/PHASE-III-M...pt=Vintage_Electronics_R2&hash=item53e9adc5d5
Anyway the midsized 2 inch speakers have failed due to corrosion and paper cones rotted.
I was thinking of replacing with these 2 inch unites which I bought.
http://www.ebay.com/itm/Two-Unites-...er_MP3_Player_Accessories&hash=item257652929b
Do you think they will substitute ok?
How does the power rating come in here?
These ebay speaker look identical, same sized ceramic magnet.
One of the original 2 inch speakers also has a broken coil wire, and that wire is extremely fine. They did not use braided copper to connect to the cone, just tiny wire from coil direct to the solder lug. I dont see how that tiny wire could carry much power. That wire corroded and broke.
The original speaker is also completely sealed, no slots on backside.
The Ebay speakers are more standard with the braid and slotted open steel housing.
These Phase III speakers have a single bipolar capacitor in series with the negative wire of both tweeter and midrange speaker. The polarity is also reversed from the woofer and the other two.
Here they are painted. One is missing its 2 inch speaker. The other one I repaired the 2 inch speaker.
Last edited: