Correct cones for 604-8K

[kwingylee]

All
Looking for anyone that knows what the correct cones are for the Altec 604-8K. Looking to make sure the pair I m looking at have the right cones before I pull the trigger.

Thanks in advance.

[Elitopus1]

The ones I have seen had a 23978 cone number. What numbers do yours have?

[kwingylee]

The ones I have seen had a 23978 cone number. What numbers do yours have?

One has 239792; the other has 1(?)003035430-01

Does it make sense.

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The ones I have seen had a 23978 cone number. What numbers do yours have?

One has 239792; the other has 1(?)003035430-01

Does it make sense?

[Elitopus1]

Is this the pair on ebay right now? Sounds like one is original and one has been reconed

Lets see if the real experts chime in on this one

[mah]

Check if the 35430 is actually 35400(which is listed by EV as a replacement for the 604-8K).

There is an Altec cone 23919 for an RCA 33785 loudspeaker.

Cone numbers are often poorly stamped which can lead to them being misread.

[kwingylee]

Is this the pair on ebay right now? Sounds like one is original and one has been reconed

Lets see if the real experts chime in on this one

Yup the price is right but the wrong cone would be a deal breaker

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Check if the 35430 is actually 35400(which is listed by EV as a replacement for the 604-8K).

There is an Altec cone 23919 for an RCA 33785 loudspeaker.

Cone numbers are often poorly stamped which can lead to them being misread.

You are right the 35430 is actually the 35400 so it has been reconed with EV part.
The other one looks like 239792 so it looks like an original Altec cone.

Still worth it?!

[endeeinn]

Yup this is the Altec to EV conversion letter that shows the 35400.

[mah]

The 35400 is an original Altec part that EV used for Service Repairs of Altec 604-8K speakers. Earlier cones may have different numbers but you would need to know what they are and then find NOS. Stick with the 35400.

The 6 digit cone number is in doubt.

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Use pages 2 and 4 to cross-reference R/K(recone kit)# to drivers:

Dropbox - ALTEC PRO PDF'S

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Just wondering if these could be an alternative to the 604-8K:

JBL 801B Urei 15" Coaxial Studio Monitor Speakers 801 Post Altec 604 Duplex | eBay

No crossovers but those horns are great.

Check the cone numbers, with Board members, of course.

[kwingylee]

The 35400 is an original Altec part that EV used for Service Repairs of Altec 604-8K speakers. Earlier cones may have different numbers but you would need to know what they are and then find NOS. Stick with the 35400.

The 6 digit cone number is in doubt.

I looked at the eBay ad again... the 6 digit number could be 23978 2 so it appears to be a good Altec number. It's tough to make out the faded values...

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Use pages 2 and 4 to cross-reference R/K(recone kit)# to drivers:

Dropbox - ALTEC PRO PDF'S

- - - Updated - - -

Just wondering if these could be an alternative to the 604-8K:

JBL 801B Urei 15" Coaxial Studio Monitor Speakers 801 Post Altec 604 Duplex | eBay

No crossovers but those horns are great.

Looks interesting but I already have a set of tannoy dual concentrics. Always wanted to try 604 family drivers. I don't know much about the JBL/UREI drivers.

Check the cone numbers, with Board members, of course.

Did JBL sell that driver? Or were these DIY s?

[mah]

Upon reflection these are JBLs with the Urei horns rather than the Altecs JBL used previously.