Renkus-Heinz SSD 1800 throat angle

[tizman]

Hi All!

I have recently acquired a couple of nearly new Renkus-Heinz SSD 1800-8 Ohm compression drivers, and would like to build a pair of 300HZ square Le Cleac'h horns for them. I was wondering if anyone knows what the throat exit angle is for these drivers? I am unable to find this information anywhere online.

Thanks in advance for any information!

 

[tizman]

It seems that most compression horn manufacturers don’t provide the spec for the exit angle of their compression drivers. This seems odd since it is important to match this angle to that of the horn throat. The Le Cleac’h spreadsheet includes a parameter for this specification, and changing the parameter changes the design of the horn.

 

[justanalogue]

ftp://ftp.renkus-heinz.com/Legacy_P..._Drawings/Classic_RH_Drivers/SSD1800_data.pdf

All the info you need...

 

[weltersys]

All the info you need...

Other than the throat angle the OP requested 🙄.
That said, unlike other Renkus Heinz drivers that had extended throats which would be best to match, a "pancake" driver like the SSD1800 throat is so short that matching the angle is of little consequence.

 

[tizman]

unlike other Renkus Heinz drivers that had extended throats which would be best to match, a "pancake" driver like the SSD1800 throat is so short that matching the angle is of little consequence.

Thanks weltersys! That’s great to know, opens up a lot of possibilities, and explains why this spec wasn’t given by R-H (and Altec) for these types of drivers.