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Q & A / 1979 Sunn Concert Bass Schematic
« Last post by cosnerguitars on September 25, 2017, 01:04:55 pm »
Hi I'm looking for a 1979 Sunn Concert Bass Schematic. I found one on various websites but this one appears to be somewhat different.  Mine has a single bridge rectifier with discreet diodes, and the ones on the net seem to show 3 separate bridge rectifiers.  Mine also seems to have a 47k resistor and neon lamp in parallel with the main switched power supply.  Any help would be greatly appreciated!
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Classified / Looking to Buy Concert Slave!
« Last post by Blight Moth on September 24, 2017, 10:25:58 pm »
Just looking for a Concert Slave to go with my Concert Lead.  Hoping I will have some luck here! Thanks
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Q & A / Re: Original Two Prong Power Cord
« Last post by N2000s on September 23, 2017, 07:13:21 pm »
Thanks!...  but one has been found. Still a good idea to replace yours though:)
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Q & A / Re: Original Two Prong Power Cord
« Last post by measurestaken on September 23, 2017, 04:36:59 pm »
did you find one yet? I have a Sonaro that I've been meaning to put a three-prong cord on (shocks me onstage!) but I haven't got around to it. If you're still looking, that would likely get me off my ass and do it.
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Q & A / Re: Need help ID'ing the '68 SUNN cabinet
« Last post by EdBass on September 22, 2017, 04:44:30 am »
I think it's a 100S cab that has been modified into a 215 from the factory configuration of 1 JBL D130F and a compression driver horn. That cutout in the back is a giveaway, it's where the crossover was mounted. Rare cab, but I'm afraid the one you are looking at has had a new baffle installed.

The Reverb cab is it's big brother, the 1000S; 2 X D130F (D15S) with the driver/horn and rear mounted crossover, the driver/horn you see in the Reverb cab is the same one originally in your CL cab.
The 1000S is a bigger cab, 46" X 30" X 15", the Craig's List cab is smaller, with no room for a 15" and the driver/horn assembly in the top of the cab.

Not sure why the Reverb cab has D140's, either they are replacements or the cab was spec'ed with them on a special order.

My guess is that "L.D." are the initials of the Sunn employee who built the box, or maybe the one who stuffed and wired the cab at the factory.
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Q & A / Re: Need help ID'ing the '68 SUNN cabinet
« Last post by Isaac on September 21, 2017, 07:26:32 am »
My impressions: Tolex looks right, corners look right, internal construction looks right, handle, casters, so yes, probably a Sunn. But the cabinet doesn't appear to be ported in any way, and offhand, I can't think of any early Sunn cabinets that were sealed. L. D. would be the initials of the worker who finished the cabinet. The cutout on the back of the cabinet looks about right to hold a JBL crossover, which would mean that this cabinet would originally have more likely been a PA bottom than a bass guitar cabinet, but, again, I'd expect it to be ported.

Sorry I can't be of more help.
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Q & A / Need help ID'ing the '68 SUNN cabinet
« Last post by shlepakoff on September 21, 2017, 02:22:39 am »
Hi all!

New to this forum, VERY excited to be here. I'm thinking of picking up this gutted cab (https://houston.craigslist.org/msg/d/vintage-2x15-guitar-bass/6313317751.html). Need your expertise on the following:
1. confirming that this is in fact a SUNN cab (model would be appreciated);
2.  identifying which speakers it originally shipped with;
3. what do initials "L.D" stand for?

Thanks in advance to all responders!
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Q & A / Re: Cone Excursion
« Last post by eddiemac on September 19, 2017, 06:14:10 am »
O.K., your confirmation is good enough for me.  I wonder if the 200S had the higher roll-off from its inception or if it was modified as time went on.  Did the roll-off have something to do with the speakers used with each specific amp pairing?  Did JBL request modifications due to increased warranty work?  Just wondering  -  ad infinitum . . .
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