Altec 34852 diaphragm?

**je2a3** · March 21st, 2016, 10:32 PM

From an Altec 605B Duplex, DCR = 12.5 ohms, is it an original Altec diaphragm?

Thanks in advance!

JE

**mah** · March 21st, 2016, 11:41 PM

Yes.

Scroll to the bottom of this page for more info. Recommended Parts - Substitutions - Construction Hints

**je2a3** · March 22nd, 2016, 01:31 AM

Originally Posted by mah

Yes.

Scroll to the bottom of this page for more info. Recommended Parts - Substitutions - Construction Hints

Both diaphragms on my 802Ds have screw terminals and lower DCR, now it all makes sense. Thank you very much!

**magnarc** · March 22nd, 2016, 06:18 AM

Newer style, made in 1997.

**je2a3** · March 22nd, 2016, 09:40 AM

Originally Posted by magnarc

Newer style, made in 1997.

Thanks for that info!

While swapping diaphragms, I found the 20275 from the 802D to be more midrange oriented while the 34852 had more energy in the high frequencies. This prompted me to post the original query.

**magnarc** · March 23rd, 2016, 06:05 AM

Originally Posted by je2a3

Thanks for that info!

While swapping diaphragms, I found the 20275 from the 802D to be more midrange oriented while the 34852 had more energy in the high frequencies. This prompted me to post the original query.

That's interesting, as both are essentially the same, just different look. The 20275 is likely to be made before the 80s, and have been the original dia fitted to a 605B