Replacent Radio Speakers

[JSanford]

I just replaced my four original Delco speakers with new ones from Electro-Tech http://www.turnswitch.com and am very happy with the results.

My rear 4x10 speakers were completely dead and my front 3.5 speakers had damaged cones. The new speakers are a perfect fit and actually weigh less thanks to modern magnet technology.

Electro-Tech is just about the only source for the 8-10 Ohm speakers our vintage Delco radios use. Using a modern 4 Ohm speaker can actually damage our radios.

 

[6cuda6]

Very cool! How do they sound?

 

[JSanford]

They sound great.

 

[6cuda6]

Do you have the stock radio still hooked up?

 

[JSanford]

Restored back to a stock Delco unit, a PO had installed a Kenwood tape deck in the '90s

 

[6cuda6]

Interesting....thanks....might have to upgrade my speakers then.

 

[Matt Colie]

You lucked out. The early coaches had a single wire to the speakers and the Delco radio was junk (plus mine was dead).

Matt

 

[unthinkablecreation]

Great find I'm definitely going to snag a pair

 

[LarryW]

Went on line and could not find "Electro-tech EN32R-8A" for the small round speakers you pictured. Where did you get them?

 

[LarryW]

Oops...sorry, just found them.

 

[LarryW]

They are suggesting use of "50uf 50volt non-polar coupling capacitors in series to prevent over excursion of the cone at very low frequencies".
I googled that and Complete Greek to me. Could someone please translate for me. What do I need to get to make the small round speakers work with the new Sony I have I my dash?

 

[unthinkablecreation]

They are suggesting use of "50uf 50volt non-polar coupling capacitors in series to prevent over excursion of the cone at very low frequencies".
I googled that and Complete Greek to me. Could someone please translate for me. What do I need to get to make the small round speakers work with the new Sony I have I my dash?

You need to wire two of these components end to end to protect the speakers.
Capcitors

 

[JSanford]

They are suggesting use of "50uf 50volt non-polar coupling capacitors in series to prevent over excursion of the cone at very low frequencies".
I googled that and Complete Greek to me. Could someone please translate for me. What do I need to get to make the small round speakers work with the new Sony I have I my dash?

If you have a new Sony then you probably need modern 4 Ohm speakers. The Electro-Tech speaks are a perfect fit but are really designed for the vintage audio systems original to our GMCs.

 

[LarryW]

If you have a new Sony then you probably need modern 4 Ohm speakers. The Electro-Tech speaks are a perfect fit but are really designed for the vintage audio systems original to our GMCs.

OK, I got the impression from reading notes from the Electro-Tech http://www.turnswitch.com link that these were OK to use with modern radios. Here is what they said.
Note: When used with modern high power radios, this speaker should be connected with 50uf 50volt non-polar coupling capacitors in series to prevent over excursion of the cone at very low frequencies. Some factory GM and all Mopar applications using these speakers have the crossover capacitors installed in a box under the dash. It is even more important when installed with our conversion radios or modern after market radios with high power amplifiers.

That is why I'm looking for a translation of the "50uf 50volt non-polar coupling capacitors" thing....

 

[Matt Colie]

Larry,
The device, a 50uf, 50V Non-polar is a common part in the audio world. If you go to <www.parts-express.com> and then choose "Parts and Accessories" and under that pick "Capacitors". You will see a tab for "Non-Polarized Electrolytic Capacitors". You will find them there.....
Matt

 

[annasanders12]

Hi, does a GMC radio needed a huge amount of capacitor?