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Ports History [message #26695] Tue, 08 May 2018 23:31 Go to next message
oren hudson is currently offline  oren hudson
Messages: 256
Registered: March 2008
Location: Gastonia, NC
Senior Member
I recall reading somewhere the general info on when the ports were added to the cabs. My brain has failed on remembering that info and I don't seem to find it in a search, so here goes. When did the ports first start? Was there a difference between guitar cabs and bass cabs as to whether or not the ports were installed? I ask because I've looked at a (terrible) pic of what the owner says is a gold covered cab. He knows nothing else about it. Appears to be gold or possible silver 2x12 or 2x15 with the ...by Ross emblem and no ports. Any clues? Thanks.
Re: Ports History [message #26697 is a reply to message #26695] Wed, 09 May 2018 00:15 Go to previous messageGo to next message
chicagobill
Messages: 1882
Registered: April 2003
Senior Member
From what I remember, all cabinets after a certain point had ports cut into the baffle board, but not all cabinets had the front mounted aluminum or chrome port bezels.

I have an early horizontal 2X15 cab that has no ports. All of the vertical cabinets that I have seen have ports. Pleat will have a better answer for you, I'm sure.
Re: Ports History [message #26698 is a reply to message #26695] Wed, 09 May 2018 06:07 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4091
Registered: June 2004
Location: NY
Senior Member
Lol! And I have a early horizontal 2-15 white cab with the baffle holes !
Re: Ports History [message #26699 is a reply to message #26698] Wed, 09 May 2018 06:59 Go to previous messageGo to next message
pleat is currently offline  pleat
Messages: 1392
Registered: June 2004
Location: Belding, Mi
Senior Member
The early Frankie cabinets were offered in a 2x15 side by side, and then went to a vertical 2x15 and 3x15 cabinets. Most early cabinets have portholes behind the grill cloth and some don't. Bud said in the early years he was cutting the holes by hand and broke his saw, he said he didn't have the money to replace the saw, so he concentrated on just cutting the holes for the 15" speakers. Looking at the side of the cabinets, they had a slight taper narrower at the top and wider at the bottom. The K200 A cabinets were 12 T&R wide and had 3" ports behind the grill cloth, or as a 20.00 up charge, you could get the 4" aluminum ports. Name badge would say Kustom by Ross Inc. Sometime in 68 Kustom started building all the cabinets with the port tubes as standard. The 69/73 cabinets changed to chrome plastic ports and the name badge said Kustom Electronics Inc.
pleat
Re: Ports History [message #26702 is a reply to message #26699] Thu, 10 May 2018 11:50 Go to previous messageGo to next message
kustomoholic is currently offline  kustomoholic
Messages: 227
Registered: March 2009
Location: Tulsa,oklahoma
Senior Member
My blue 2-15 vertical Frankie cab has no ports. (11 pleats) I stuffed it full of insulation to make the cab feel bigger. I used it with the Blue Frankie head and it sounds decent with the 2 15" Eminence drivers I salvaged from a La15 and what was in my Charger that I swapped in an Altec421a-8h. I used that Frankie rig in Indy in 2011.
Re: Ports History [message #26703 is a reply to message #26695] Thu, 17 May 2018 21:12 Go to previous messageGo to next message
BrianBB is currently offline  BrianBB
Messages: 44
Registered: November 2008
Location: Fayetteville, Ga.
Member
I have a charcoal vertical 2x15 Frankie head and cabinet. No ports cut in the baffle.
Re: Ports History [message #26704 is a reply to message #26695] Fri, 18 May 2018 05:57 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4091
Registered: June 2004
Location: NY
Senior Member
It would be great to have the manufacture date off of the speakers, then we may be able to start a data base and pin down when the change over was to baffles with holes.
Re: Ports History [message #26705 is a reply to message #26704] Fri, 18 May 2018 23:19 Go to previous messageGo to next message
oren hudson is currently offline  oren hudson
Messages: 256
Registered: March 2008
Location: Gastonia, NC
Senior Member
I opened the cab up and found that they were obviously CTS square magnet speakers, but sadly, no numbers anywhere on the speaker frames. Other notable items: slotted screws used on the back panel, no sealer (turned to tar) used on the back panel and a blank speaker jack plate. It sounded amazing when I cranked it for a while with an SVT head!
Re: Ports History [message #26706 is a reply to message #26695] Sat, 19 May 2018 06:14 Go to previous messageGo to next message
stevem is currently offline  stevem
Messages: 4091
Registered: June 2004
Location: NY
Senior Member
Most CTS date codes are on the magnet.
Re: Ports History [message #26709 is a reply to message #26706] Sun, 20 May 2018 21:27 Go to previous message
oren hudson is currently offline  oren hudson
Messages: 256
Registered: March 2008
Location: Gastonia, NC
Senior Member
Success! I got the cab out in the bright sunshine Sunday and took the back panel off. I looked and looked and looked at the speakers for the code. Nothing. I then got a large magnifying glass out and a super bright blind your eyes flashlight and scoured the magnet at all angles for any possible trace of the numbers. I did manage to find a very faint number with a hint of green that CTS typically used. After detailed examination, made out the prefix to be 137. Then the big mystery date numbers - date code is 638. So, looks like a mid '66.
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