Hi there,

I was thinking about replacing the original speaker in my old project. It's from a 1949 Emerson model 604. The speakers manufacture # is 505-022

So the info I do have is:

Cone 8 – inch
Field Permanent Magnet Alnico V 6.8 Uz.
Voice Coil Impedance at 400 C.P.S. 3Ohms
Output Transformer Primary Impedance 2200 Ohms
Output Transformer Primary Resistance 285 Ohms

I want to get the best sound possible, and may consider adding another speaker or tweeter if it were of some sound benefit. Maybe one with a built in tweeter?
I would love to hear some suggestions for a replacement(s) and get some opinions on the best route for me to take.

Thanks!
Ian

:Hi there,
:
:I was thinking about replacing the original speaker in my old project. It's from a 1949 Emerson model 604. The speakers manufacture # is 505-022
:
:So the info I do have is:
:
:Cone 8 – inch
:Field Permanent Magnet Alnico V 6.8 Uz.
:Voice Coil Impedance at 400 C.P.S. 3Ohms
:Output Transformer Primary Impedance 2200 Ohms
:Output Transformer Primary Resistance 285 Ohms
:
:I want to get the best sound possible, and may consider adding another speaker or tweeter if it were of some sound benefit. Maybe one with a built in tweeter?
:I would love to hear some suggestions for a replacement(s) and get some opinions on the best route for me to take.
:
:Thanks!
:Ian
:
Ian, there are several possibilities here, you don't mention what the problem if any with this speaker, can be re-coned if that is the problem, seeing its a perm mag speaker a replacement can easily be found that can match the mounting, I would transplant the output transformer providing its ok.

This isn't really a hi-fi amp so don't expect much of an improvement in sound by renewing the speaker. If the speaker you've got is damaged and/or sounds bad, replacements are easy to find- you can use any automotive-style 4 ohm. These can be found at chain auto-parts stores, Radio Shack, big box stores, and so on. Just buy a decent full-range speaker and forget about the tweeter- it's a waste of money.

Hi Dale and CV,

Thanks for your replies.

Right now as far as I can tell there is nothing wrong with the speaker. I understand this ain't going to blow my mind with sound quality. I was just curious if there was any advantage to or "better" replacement. I am in the process of getting the amp re capped, so I will know more about how it really sounds in a few weeks.

Thanks for the speaker info CV. You have been a big help with everything!

Ian