Marine0811
I love it loud!
What can you tell me about Herald woofers? I have a 15” pair in mint condition. Just wondering if they are worth doing anything with
Herald woofers
- Thread starter Marine0811
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Made in Japan, similar to the drivers sold by Calrad and Olson. Typically OEM units made by Coral or early Pioneer. Herald imported piles of Japanese gear. In those days Japan had very low labor costs.
While these drivers were lower cost and second or third tier by the standards of the day, such speakers can be very nice in the right cabinets.
I have a number of the smaller coaxials. The paper-cone tweeters are pretty awful, but it was, after all, the 1950s/1960s. Some used whizzer cones.
If you post a photo I might be able to point you towards the comparable speaker specs, but these tend to be useless for designing cabinets.
None, however, will handle a lot of power if that is your goal.
While these drivers were lower cost and second or third tier by the standards of the day, such speakers can be very nice in the right cabinets.
I have a number of the smaller coaxials. The paper-cone tweeters are pretty awful, but it was, after all, the 1950s/1960s. Some used whizzer cones.
If you post a photo I might be able to point you towards the comparable speaker specs, but these tend to be useless for designing cabinets.
None, however, will handle a lot of power if that is your goal.
bowtie427ss
Lunatic Member
Sliding into the 70's... 
I'd be willing to bet that your 15 inch Herald woofers have either the classic square 54 ounce magnet or large open frame alnico motor, "muscle magnet" sticker, and were made in the USA by Eminence. Most of their large cone speakers were made by Eminence.
Look for the Eminence EIA code "67" on the rim of frame spaced just slightly apart from any other numbers to verify.
You will see the Eminence EIA on all these woofers:
I'd be willing to bet that your 15 inch Herald woofers have either the classic square 54 ounce magnet or large open frame alnico motor, "muscle magnet" sticker, and were made in the USA by Eminence. Most of their large cone speakers were made by Eminence.
Look for the Eminence EIA code "67" on the rim of frame spaced just slightly apart from any other numbers to verify.
You will see the Eminence EIA on all these woofers:
Marine0811
I love it loud!
They look just like your first pic. Big black square magnet. Are they decent woofers? They came in some big homemade cabinets that I got. There’s a bunch of different drivers in the cabinet, all wired together and full range. Sound terrible, but we’re good for refoam practice
bowtie427ss
Lunatic Member
It really depends what spec Herald ordered them built to.
These came off the same assembly line likely using many of the same parts:
Marine0811
I love it loud!
That’s pretty interesting. Aren’t the K33’s the woofers Klipsch put in the La Scala
bowtie427ss
Lunatic Member
and K-horn ,and Belle, and Cornwall. One size fits all.
By the 80's they learned how to round out the corners of that magnet assembly. That's innovation and advancement!
I should note here that Eminence was not the exclusive builder of K33's. As many or possibly more were built to the same specs by CTS.
By the 80's they learned how to round out the corners of that magnet assembly. That's innovation and advancement!
I should note here that Eminence was not the exclusive builder of K33's. As many or possibly more were built to the same specs by CTS.
Marine0811
I love it loud!
I just might have to do something with these and see how they sound
