HPM-100 midrange model number?

[doucanoe]

I was wondering if someone could help me out. Im in the process of refurb'ing a pair of HPM 100's and I need to replace one of the 4" mid drivers. I pulled one out of mine and its a model # 10-421A. Im following some auctions and some that claim to be HPM 100 mid's are shown as # 10-423A

Can someone give me a definitive midrange model # for the HMP 100 4" driver?

Thanks much, RC

 

[Nitro]

Mine have 10-721B-1 and 10-721C-1. They have different colored cones, so I would imagine one has been replaced. Mine are the 50W/100W versions.

 

[yamahammer]

another vote for #10-721B-1 that is whats in my 100's

 

[macaltec]

I have a 10-721C-2. If you want it, and can use it it's yours.

 

[doucanoe]

I have a 10-721C-2. If you want it, and can use it it's yours.

10-721 seems to be the driver. Im unclear if the A,B,C designation is just a newer to later version or not at this point but I would imagine it is. Pm coming your way. Thanks!

RC

 

[basicblues]

I have both versions, and in the 200w version it's 10-721B-1 in mine...

 

[Redboy]

I'm glad to see you've come to your senses and are finally getting some real speakers, RC!

I'll help you get rid of the rest of that junk.

 

[doucanoe]

Yep, to heck with all that Altec, EV and JBL nonsense. I got me some serious seed rattlers. You can blame that on Retro, I listened to his and knew right then and there I needed a pair!

Use of the term "Seed Rattlers" is meant in the positive. I enjoy having my seeds rattled from time to time

RC

 

[Redboy]

Yikes.