Quote Originally Posted by LowOhms View Post
Way cool to find that mah. Enjoyed reading it, and seeing a photo of the two authors.

The use of a polyimide film surround with a metal diaphragm, to me, is the mark of Jonas Renkus. His Renkus-Heintz drivers used such a surround. To my limited knowledge, Jonas never commercially tried to offer a field coil driver commercially. In the one inch throat realm, he made nice sounding EA-175s, A for Alnico and EC-175s, C for ceramic.

For a VALENCIA re-do, ( a rough pair I found locally in March of this year ), we elected to exchange the 806 ALTEC drivers for rebuilt EA-175s. Coincidentally, Jonas' son, Algis Renkus, was my client in the early 1980s. I was his stockbroker at Prudential-Bache Securities' Beverly Hills office. Algis was a nice man.


Low Ohms......Jeff Medwin.
Very cool that you knew Algis Renkus.

I have a few of their drivers (both Renkus-Heinz and Emilar). I am listening to some Renkus drivers right now in my small Altecs with 414-16b woofers. The SSD-1400's I have are the smaller version of the more popular SSD-1800 driver. They are similar to an Altec 806 versus the 802.

Running the 414 full range, and bringing in the Renkus drivers in at 6.5khz with a first order xover sounds excellent.

On this system I use a SS 2.8 wpc Realistic amp. It sounds great, and is the perfect volume for family listening levels. I used to run this system with a SE 6bq5 amp prior to using the Realistic