Zenith Allegro tweeter question

HAHAHAH I love that commentary. I'm a DIY'er so I wondered if I had some 'hidden gold' that I needed to do a sweep on and potentially incorporate into something. Sounds like it would only be valuable from a 'fun' perspective versus a high fidelity perspective.
 
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Once used a pair of the phenolic dome version of this tweeter in a pair of KLH-22A speakers with them crossed over about 12kHz to reproduce what the stock tweeter could not. They sounded quite good to me.

I can post a picture of the front of the speaker box later today if that's ok or would it be best to start another topic about the whole speaker?
 
I can never get enough loudspeaker pictures, so go right ahead!

The Foster horns incorporated in the Wharfedale E Series speakers may not have been outstanding in high fidelity terms, but they did contribute to the excitement and dynamism that made the E Series stand out in comparison to the more unadventurous speakers of the time.
 

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One thing about a lot of the lower end and/or not so well known Japanese made speakers of the mid 60's to mid 70's is the cabinets were often fairly decent to very good, but they had lower quality drivers inside and that makes them perfect candidates for building speakers.

For 11dB attenuation I'll need a 5.75 ohm series resistor and 3.13 ohm parallel resistor.

I'll use a 5.6 ohm series resistor and a 2 ohm in series with a 1.2 ohm resistor for the parallel resistor.

For 9dB attenuation I'll need a 5.16 ohm series resistor and a 4.4 ohm parallel resistor.

I'll use a 5.1 ohm series resistor and a 4.3 ohm parallel resistor.

Now because I'm going to have to redo the backs of the speakers given I'll probably ruin the originals removing them I'll install a speakon connector in the new backs

I've used this one on two sets of speakers (one three way actively amplified and one full range) and they make it so easy to connect and disconnect the speakers.

https://www.parts-express.com/Neutrik-NL4MPR-Speakon-4-Pole-Round-Chassis-Mount-092-054?quantity=1