I'm just getting started on the restoration of my 70 rally dash....and never thought about a speaker. My factory one is beat. Is there a company that reproduces the speaker? Or a company that restores factory speakers? Any help is appreciated...
Options for 1970 Rally Dash Speaker
- Thread starter Dutchrebuild
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E bay and look for a Radio Shack 4x10 good sound but if you want better Retro Auto Sound
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PurpleBeeper
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Or…look for a “split frame” that allows two 3” cone speakers to fit the factory hole
Do not know what size your front speaker is. If it's one of the long skinny ones, 2 1/2 or 3 by 9-10 long. S&M Electro in Blaine, Minnesota makes a frame set up for 2 small speakers to go in the same area. You can tie them together or use them like a modern system with balance or fade. They convert radios too. Also pre-wired if desired.
I have had them convert 2 radios with speakers in both of my Darts.
I have had them convert 2 radios with speakers in both of my Darts.
this was in my 70 charger,center speaker
If running the factory radio make sure the speaker is 8-10 ohms.
This is from Turnswitch
Note: Many replacement speakers now sold by the discount stores, autoparts stores and mail order restoration parts houses are labeled as "4to 8 ohm compatible" and are in fact 4 ohm speakers.These speakers can damage the older transistor radios. 4 ohm speakers will measure around3.2 ohms with a DC ohmmeter. An 8 - 10 ohm speaker will measure around 7.4 ohms with a DCohmmeter. The DC resistance is the critical number for the Delco radios as the outputtransistor is in series with the speaker. A properly operating Delco radio should have 1.5volts DC across the speaker voice coil. A 4 ohm speaker will draw twice the current of an8 ohm and cause the amplifier transistor (the half dollar size device mounted to the blackfinned heat sink on the back of a Delco radio) to run very hot. The speaker cone should bedisplaced in an upward (away from the magnet) direction about 1/8" when a Delco radiois turned on. If the cone moves down toward the magnet, the speaker leads need to bereversed. Ford and Chrysler radios of the period used the same type of germaniumoutput transistors as the Delco radios and also require 8 ohm speakers. However, Ford andChrysler radios ran with 0 to 1 volt DC offset on the speaker depending on the radio modeland vintage. Many will not deflect the cone when turned on like the Delco radios.
This is from Turnswitch
Note: Many replacement speakers now sold by the discount stores, autoparts stores and mail order restoration parts houses are labeled as "4to 8 ohm compatible" and are in fact 4 ohm speakers.These speakers can damage the older transistor radios. 4 ohm speakers will measure around3.2 ohms with a DC ohmmeter. An 8 - 10 ohm speaker will measure around 7.4 ohms with a DCohmmeter. The DC resistance is the critical number for the Delco radios as the outputtransistor is in series with the speaker. A properly operating Delco radio should have 1.5volts DC across the speaker voice coil. A 4 ohm speaker will draw twice the current of an8 ohm and cause the amplifier transistor (the half dollar size device mounted to the blackfinned heat sink on the back of a Delco radio) to run very hot. The speaker cone should bedisplaced in an upward (away from the magnet) direction about 1/8" when a Delco radiois turned on. If the cone moves down toward the magnet, the speaker leads need to bereversed. Ford and Chrysler radios of the period used the same type of germaniumoutput transistors as the Delco radios and also require 8 ohm speakers. However, Ford andChrysler radios ran with 0 to 1 volt DC offset on the speaker depending on the radio modeland vintage. Many will not deflect the cone when turned on like the Delco radios.
Warning: Never run 4 ohm speakers on any vintage car automobile radio using transistor output circuits.
Jackson Speaker Service for resto of your factory speaker. Quick turn around and high quality work. Call Ron 517-740-0092
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