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Old July 9th, 2008, 01:07 AM   #1 (permalink)
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Here comes the Sunn!

Naturally, being in Lake Oswego, OR, I had to try this when I saw it. Real cool tone. Very meaty. Uses two 6550 power tubes, and 4 12AX7s in the pre. So, I bought it (naturally, 1 week after buying a '79 Fender Twin Reverb!)

Now the questions: I can't find ANY information on the web about this amp, let alone a copy of the owners manual. I'd like to know more about the speakers (like, who built them?), what that gold tube thingy is hanging down off the chassis (in the photo of the back, on the left hand side), and how the amp is regarded generally. Does anyone know anything about this amp?

The pot codes date from 1972, and what I assume to be the Q&A sticker is 1974, so I'm thinking this is a 1974 amp. Except for the replaced volume knob, it's in almost like new condition. Clearly not gigged with. Tubes have been swapped (6550 are Winged =C=, although they look to be fairly old, and all the 12AX7s are JJs), but for kicks I ordered some 6550 JJ's and some Mullards to see what that does.

The channels and gain settings are really fun. The Channel 1 has Volume, Bass, Treble, and Hi Boost (like a Bright switch). The Channel 2 has Volume, Bass, Mid, and Treble. But above the mid is a selector switch that lets you choose between 750, 1.5k, and 3k. Also, the Channel has a Hi Boost like Channel 1, and Gain Boost switch that lets you choose between Lo, Normal, and Distort. Very interesting. The reverb is selectable to either channel or both, and each channel has a Hi and Lo input. Lastly, it has Master Volume shared by both channels. The reverb is foot switch controlled, but there is no channel switching! This is easily remedied with an A/B footswitch though.

Anywhooo. Any additional info or comments would be appreciated. Be sure to read the reverb sticker!
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Old July 9th, 2008, 01:10 AM   #2 (permalink)
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Some additional photos:
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Old July 9th, 2008, 01:27 AM   #3 (permalink)
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You might be able to get an owners manual here.


http://www.fender.com/support/hardcopy_archives.php
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Old July 9th, 2008, 02:03 AM   #4 (permalink)
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All I know is that Folded Line Reverberaton Device says the coolest thing:

Manufactured by beautiful girls in Milton, WI under controlled atmosphere conditions."

Very cool looking amp!
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Old July 9th, 2008, 02:08 AM   #5 (permalink)
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That is a very cool looking find. Congrats on that. If I can find out anything about it, I'l let you know. I know so many old fart guitarists that have played everything under the sun, or at least that's what they say!
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Old July 9th, 2008, 09:46 AM   #6 (permalink)
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Quote:
Originally Posted by JohnnyCrash View Post
All I know is that Folded Line Reverberaton Device says the coolest thing:

Manufactured by beautiful girls in Milton, WI under controlled atmosphere conditions."

Very cool looking amp!
Thanks! Yeah, I got a kick out of the sticker too. I'd bet you couldn't say something like that now!
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Old July 9th, 2008, 10:50 AM   #7 (permalink)
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If you ever come across a Rose Amp, let me know. They were made in 1970-73 in Tualatin by two former Sunn employees, Cris Caristmas and Allen Gill.
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Old July 9th, 2008, 12:20 PM   #8 (permalink)
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Cool! My first amp was a 66 Bassman head and a Sunn 412 cab.

There used to be a quite a bit of stuff on the Web about Sunn, but I wonder if Fender put an end to that?
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Old July 9th, 2008, 12:42 PM   #9 (permalink)
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http://sunn.ampage.org/...you will find some Sunn worshippers at this site.
'gold thingy'....my guess is that it is a filter cap. IT seems to be wired into the area of that capacitor board.
Speakers...guess...Eminence. That is just a guess. MY 1970 Sunn 1200S is loaded with 6 12" EMinence speakers. Are there any numbers on the edge of the magnet? The '128' scheme is reminiscient of EMinence....12", 8 ohm.
Cool amp.

Here's a pic of my little Sunn.
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Old July 9th, 2008, 12:59 PM   #10 (permalink)
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Thanks Wally. That's a great looking amp you've got there. And nope, no numbers around the basket of the speakers front or back.
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Old July 9th, 2008, 02:25 PM   #11 (permalink)
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Ed, I would bet that the manufacturer's codes are under those labels, huh?
Modern Eminence speakers have a code label on the edge of the magnet.
the Emi's in my 1200S are Alnicoi magnets in thehorseshoe shape and thenumbers are inked on the magnets.
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Old July 9th, 2008, 02:57 PM   #12 (permalink)
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Ed, I would bet that the manufacturer's codes are under those labels, huh?
Modern Eminence speakers have a code label on the edge of the magnet.
the Emi's in my 1200S are Alnicoi magnets in thehorseshoe shape and thenumbers are inked on the magnets.
Ooohhh. Good guess! When I get home I'll see if I can peek under there in a non-destructive fashion. Thanks!
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Old July 9th, 2008, 04:25 PM   #13 (permalink)
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Operative word...non-destructive. Let me know how you do that. I just muddle on in curiousity about what they are ......when they are that clean especially.
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Old July 9th, 2008, 07:30 PM   #14 (permalink)
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I'd definitely say they either are Eminence or CTS speakers which are common in Sunn amps.
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Old July 9th, 2008, 07:32 PM   #15 (permalink)
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Operative word...non-destructive. Let me know how you do that. I just muddle on in curiousity about what they are ......when they are that clean especially.
Weeelllll. I got most of the sticker off in a non-destructive fashion using Goo Gone and a cotton swab. But naturally, the 34 year old glue simply wouldn't give right over the number. Fortunately, the other one is like brand new too so I can use that to make a new sticker.

Now, there are two blue numbers stamped on in blue ink.
The first number is clearly the part number: 81 0126
The second number is: 137 7444.
Hmmm.
So if I'm reading this right, this is a speaker manufactured by CTS in the 4th week of the 4th month in 1974. Who is CTS?
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Old July 9th, 2008, 07:43 PM   #16 (permalink)
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Man, this is incredible, I had just given up on looking for information on that speaker. I bought an old SFDR a month or so ago that had the speaker replaced with an exact one of these, and to be honest, it might just be the best possible speaker for that amp. I A/B'd it with a '65 BFDR there at the store and actually preferred the SF. For 1/3 the price, it was a real win/win situation.
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Old July 9th, 2008, 07:47 PM   #17 (permalink)
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Welcome to the best board on the web ToneShark! And congrats on the SFDR!
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Old July 10th, 2008, 11:03 AM   #18 (permalink)
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'who is CTS'....I found this gearpage thread.....
http://www.thegearpage.net/board/arc.../t-255636.html
There is some info there.
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