Found Interesting Stuff Behind The Dash
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Just a "head's up" on the radio issue....
The Delco head wants to see 10 ohm speakers on each side. The new ones you bought are likely 4 ohm speakers. They will work...but if you turn the volume up, you will end up frying the output transistors on the finned aluminum "convector" thingy [right dash area]. Those transistors are pretty hard to find replacements for (old design), so if they are good, try to keep them that way. Just don't turn the volume up beyond where the sound starts to distort; I'd estimate that at about halfway up on the volume. You could also add another speaker to each side [wired in series] so that the total speaker impedance on each side is 8 ohms. That would give you a better impedance match and better sound to boot! Just thought you should know.
The Delco head wants to see 10 ohm speakers on each side. The new ones you bought are likely 4 ohm speakers. They will work...but if you turn the volume up, you will end up frying the output transistors on the finned aluminum "convector" thingy [right dash area]. Those transistors are pretty hard to find replacements for (old design), so if they are good, try to keep them that way. Just don't turn the volume up beyond where the sound starts to distort; I'd estimate that at about halfway up on the volume. You could also add another speaker to each side [wired in series] so that the total speaker impedance on each side is 8 ohms. That would give you a better impedance match and better sound to boot! Just thought you should know.
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 1,164
Likes: 1
From: Port Clinton Ohio
St. Jude Donor '08-'09-'10-'11-'12-'13
Just a "head's up" on the radio issue....
The Delco head wants to see 10 ohm speakers on each side. The new ones you bought are likely 4 ohm speakers. They will work...but if you turn the volume up, you will end up frying the output transistors on the finned aluminum "convector" thingy [right dash area]. Those transistors are pretty hard to find replacements for (old design), so if they are good, try to keep them that way. Just don't turn the volume up beyond where the sound starts to distort; I'd estimate that at about halfway up on the volume. You could also add another speaker to each side [wired in series] so that the total speaker impedance on each side is 8 ohms. That would give you a better impedance match and better sound to boot! Just thought you should know.
The Delco head wants to see 10 ohm speakers on each side. The new ones you bought are likely 4 ohm speakers. They will work...but if you turn the volume up, you will end up frying the output transistors on the finned aluminum "convector" thingy [right dash area]. Those transistors are pretty hard to find replacements for (old design), so if they are good, try to keep them that way. Just don't turn the volume up beyond where the sound starts to distort; I'd estimate that at about halfway up on the volume. You could also add another speaker to each side [wired in series] so that the total speaker impedance on each side is 8 ohms. That would give you a better impedance match and better sound to boot! Just thought you should know.
Safety Car
Joined: Aug 2000
Posts: 3,734
Likes: 2
From: Southeastern PA
Just a "head's up" on the radio issue....
The Delco head wants to see 10 ohm speakers on each side. The new ones you bought are likely 4 ohm speakers. They will work...but if you turn the volume up, you will end up frying the output transistors on the finned aluminum "convector" thingy [right dash area]. Those transistors are pretty hard to find replacements for (old design), so if they are good, try to keep them that way. Just don't turn the volume up beyond where the sound starts to distort; I'd estimate that at about halfway up on the volume. You could also add another speaker to each side [wired in series] so that the total speaker impedance on each side is 8 ohms. That would give you a better impedance match and better sound to boot! Just thought you should know.
The Delco head wants to see 10 ohm speakers on each side. The new ones you bought are likely 4 ohm speakers. They will work...but if you turn the volume up, you will end up frying the output transistors on the finned aluminum "convector" thingy [right dash area]. Those transistors are pretty hard to find replacements for (old design), so if they are good, try to keep them that way. Just don't turn the volume up beyond where the sound starts to distort; I'd estimate that at about halfway up on the volume. You could also add another speaker to each side [wired in series] so that the total speaker impedance on each side is 8 ohms. That would give you a better impedance match and better sound to boot! Just thought you should know.
