• The move to the new server is done. There are some software and database maintenance updates in process. This has us passing the hat around to help out. We appreciate any donations. Seriously, even a dollar helps. The payment page may be found here - https://www.audiokarma.org/support.html

Altec 604 in non ported cabinets

rudedogg

rudedogg

AK Member
BE457F22-1613-4374-A8A6-E5F6B213D761.jpeg Hey all, i picked up a pair of large MCM style speaker cabinets, each loaded with Altec 604-8K and dividing networks. They are about 8.25cuft interior space, but without any porting! I gotta say, they sound wonderful, but, what can i be missing with this configuration?
 
Register to hide this ad
How do you find the bass in the non ported cabs? I think you need around a 15 cubic foot cab to negate the need for porting on 604's
 
The Fuxtor said:
How do you find the bass in the non ported cabs? I think you need around a 15 cubic foot cab to negate the need for porting on 604's
Click to expand...
The bass is actually quite good! I am surprised how good they are. They are my 1st or 2nd best speakers. I have never seen 604s in non-ported cabinets, so i was shocked how good they actually perform
 
rudedogg said:
I saw them on Marketplace for less than a set of beat up Advents. They had been there for 18 hours! I figured long gone. Nobody answered the ad! I was stunned, sooo i took the road trip and grabbed them.
Click to expand...

Crossing state lines to purchase used audio equipment? I like it!.

Good to see there are still some "scores" out there. I've but all given up on looking anymore. If there is an estate sale within <5 miles I'll check it out.
 
From the data sheet, total Qts is .9287.....the 6048G is .25 I would say for a sealed cab

would be desired .. but you need to do more research if a ported is desired.
 
604man said:
From the data sheet, total Qts is .9287.....the 6048G is .25 I would say for a sealed cab

would be desired .. but you need to do more research if a ported is desired.
Click to expand...

So i assume the “K” version of the 604is indeed better suited to a sealed enclosure than previous inclinations?
 
rudedogg said:
The bass is actually quite good! I am surprised how good they are. They are my 1st or 2nd best speakers. I have never seen 604s in non-ported cabinets, so i was shocked how good they actually perform
Click to expand...
Stop now. You like them as they are. Are the grills removable? If so take some pictures and post them. They are fine looking speakers and fit well in the room.
 
Katalyst said:
Stop now. You like them as they are. Are the grills removable? If so take some pictures and post them. They are fine looking speakers and fit well in the room.
Click to expand...
I know, lol. I am just curious as to why they were put in sealed cabinets. They are in beautiful condition, all three cabinets are dated 9/15/1963.. so the drivers have been updated along the way. The construction of the boxes is fantastic as well!
 
rudedogg said:
I know, lol. I am just curious as to why they were put in sealed cabinets. They are in beautiful condition, all three cabinets are dated 9/15/1963.. so the drivers have been updated along the way. The construction of the boxes is fantastic as well!
Click to expand...


Maybe the builder recognized that 604s are not going to provide a lot of deep bass and sacrifices a bump in the lowest octave for a smoother curve and a bit deeper response. My 604s are in sealed cabinets (15.5 cu ft external), along with an auxillary 15".
 
Last edited:
bobabode said:
Beautiful set up. Those Maggotboxes sure look purty.
Click to expand...
Thanks! I got them as working standalone console pulls, but i thought they were butt ugly, so i reworked them a little bit. Put them in Hammond chassis’, and used top of the line sockets etc. Underneath, i tidied up all the wiring. And spun any AC wires together in a drill and bundled them. The two monos are now DEAD silent even on 105db horns! Super happy how they turned out
 
You must log in or register to reply here.
Back
Top Bottom