Are these GPA cone numbers?

**Elitopus1** · August 18th, 2016, 11:42 AM

There is a pair of 604G on that auction site with cone numbers

035400
16-168

He claims they are recones from GPA. I don't have any reason to doubt him but it got me to thinking, my Urei 604G has cone numbers

349 99
035400

Are these both GPA cones or is mine something else? Thanks

**bowtie427ss** · August 18th, 2016, 04:49 PM

GPA cone numbers start with the letters "GPA"....

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**Elitopus1** · August 18th, 2016, 05:32 PM

Originally Posted by bowtie427ss

GPA cone numbers start with the letters "GPA"....

forums

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And I have definitely seen that before. The confusion is the 35400 part. I was wondering if that was GPA's manufacturing code or something. I didnt know if they added the GPA in front of the part number later, or if it has always been there

**bowtie427ss** · August 19th, 2016, 01:00 PM

Request a pic.

I love pics.

**Elitopus1** · August 19th, 2016, 02:45 PM

I suck at posting pics on here. The first link is the 604G pair on ebay. Picture #7 shows the cone code.

Altec Lansing 604 8g Speakers with Crossovers | eBay

The second link is the single Urei 604G that I bought. Picture #9 shows the cone code. All the pics are in the description

UREI ALTEC 604-8G Studio Monitor Loudspeaker 15" Subwoofer 8? Driver #25120

**Phil-G** · August 19th, 2016, 10:48 PM

Originally Posted by Elitopus1

I suck at posting pics on here.

photo bucket can be your bestest friend.

**Elitopus1** · August 19th, 2016, 11:42 PM

I think I did it!

**magnarc** · August 20th, 2016, 10:03 AM

035400 was the cone number on the later 515 416 604 units. It appears as the cone number for many Altec units that are of similar ilk, i.e. 416/515/604 in the 1999 EVI/Altec parts cross reference. AFAIK it is the updated 21184-x cone, used in the 416/515/604 series.
How different it sounds, I don't know. Bowtie has pointed out that GPA add the GPA prefix and use many of the Altec part numbers from the time when they purchased the tooling, hence GPA 35400 is probably the same as an 35400. It may be possible that early GPA cones did not have the GPA prefix, just to muddy things.