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  #1  
Old 02-24-2011, 08:37 PM
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New Rig Day! (Sunn and A.M.P.)

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So thanks to the glory of Craigslist, I stumbled upon a find of mammoth proportions.

Ever since I ran lights for a production of Hedwig and the Angry Inch where the musical director brought in a Sunn tube stack for the guitarist, I've been wanting to try out some of their gear. I was impressed a guitar amp could sound so warm and fat, and expected their bass gear would even more so.

Found this ad listing a '67 Sunn 1x15 with an A.M.P. BH-420, and had to check it out.
Never heard of A.M.P. until I saw the posting, did some quick research, saw that people liked them.

This rig is MEAN.



(crappy focus cause I didnt have my good camera at the rehearsal space)

I was dissappointed to discover the cab was an 8ohm so I could only get 220 watts out of the BH-420, until I cranked it up.

DEAR LORD.

I previously used a 200W Acoustic B200H and an old 70s Eminence 1x15, and this made my old rig sound like a practice amp. Huge and fat, and with the parametric letting me set my middle 4 EQ bands, it results in deliciously big thick juicy grunt. The treble end of the amp isnt great, but you dont use a solo 1x15 if you play slap. I was told it is so warm because it is an 'analog' solid state, not sure what they meant, perhaps that it uses transistors etc instead of microchips and digital modeling? I'd always taken analog to mean tube. Regardless, the dude who went on to form SWR obviously knew how to make great amps, I'm surprised how much I like it.

Anyone know much about the cab? I've not seen a Sunn cab before that had a shelf area for the amp like this one has, and its not an aftermarket job, the sides of the cab go all the way up to the top, all one piece of wood on each side. Its great because I can set my beer on top, rather than worrying about someone knocking it over into the amp. However the obvious mod is that it no longer has the jack panel which would tell me a model # or SOMETHING about it (I don't even know how much wattage it is rated for =\). The jack has been removed, and a speaker cable directly wired to the speaker's leads, so there is a small length of cable sticking out at the amp shelf to plug right in, which is convenient but it means no jack panel. It has the 15" speaker at the bottom of the cabinet, and a small round port in the bottom right (looking at it from the front), the rest is sealed and empty.
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Old 02-24-2011, 09:44 PM
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Killer find! I don't know much about the cab, other than Sunn did produce some combos like that with a tube head up top, (there was one in the Portland craigslist awile back)... Try asking on the Sunn Forum...

Sweet find on the A.M.P.as well!!

-robert
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  #3  
Old 02-25-2011, 10:22 AM
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Thanks for the link, it does look like something may have been mounted in the shelf, not just placed there so maybe youre right and this was a combo at one point
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Your mileage may vary.Celebrity impersonators.Guitar was not tested on animals or any other Pink Floyd album.Void where valid
  #4  
Old 02-25-2011, 12:54 PM
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It's definitely a Sunn Sonaro combo amp with the chassis removed. See the attached catalog page.

  #5  
Old 02-25-2011, 02:16 PM
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Awesome, thanks! I was thinking of installing casters in the bottom, turns out it would have had them stock. Sadly now I'm sure the speaker has been replaced, as I'm putting upwards of 200 watts into it with no sign of problems. Guess I'll have to open it up and see what I got. Sounds great but I guess its no longer an actual Sunn.
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Quote:
Originally Posted by My name is Mudd View Post
Your mileage may vary.Celebrity impersonators.Guitar was not tested on animals or any other Pink Floyd album.Void where valid
  #6  
Old 02-25-2011, 07:29 PM
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Just opened the cabinet, and the original speaker was replaced by a CTS, model 15G54L whatever that may mean, cant find anything about it on the internets. Sunn made their own speakers right? Perhaps I can track down something of theirs that might be at least closer to what belongs in this cab.
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Quote:
Originally Posted by My name is Mudd View Post
Your mileage may vary.Celebrity impersonators.Guitar was not tested on animals or any other Pink Floyd album.Void where valid
  #7  
Old 02-25-2011, 08:25 PM
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Congrats on snagging the A.M.P. I would love to find one in good condition just to have a part of history.

You might want to check out this link: History lesson - Thunderfunk/SWR/Eden, etc

This is a great read and explains how a lot of these great came about and who was/is responsible.
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  #8  
Old 02-26-2011, 07:57 AM
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Thanks, I'd found bits and pieces here and there, nice to read something more comprehensive.
I'm pretty sure that for what I paid the cabinet could have been junk (as it is all that is original is the cabinet enclosure itself) and it still would have been well worth it. I usually am not a fan of SS amps with a ton of knobs, but it sounds really great. Well unless I want to get into a lot of treble and not so much mids, it sounded a little brittle up there.

Clearly the amp has been taken care of much better than the cabinet was, still gonna keep an eye out and see if I cant get the cab cleaned up and get it some more appropriate parts.
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