edwardsand
Joined: Jun 29, 2018
Posts: 660
|
Posted on Jun 21 2023 11:05 PM
Looking at your photos, I see the H stamp in blue/purple with a circle, which is unusual in my experience. But more to the right, there seems to be a different letter stamped on the case of the pan - it looks like an O, but I can't see the whole letter - could be something else. That I believe would be the code to be concerned with.
AndrewTesta wrote:
Mine is marked with an H  was said to be from a late 60’s Fender amp. Original owner was unable to measure impedance so whenever it arrives I’m praying it’s compatible but like DannySnyder said, it’s a gamble. I can’t find any info on H stamps so who knows. But for the price listed, coming from a late 60’s fender let’s hope the gamble is worth it! If anyone has any info on a pretty much blank Gibbs reverb pan (code has disappeared with age) with an H stamp inside I would love to know what this thing is.
|
Thor
Joined: May 21, 2006
Posts: 35
|
Posted on Jul 20 2023 09:09 AM
Thanks for compiling this. This is very helpful in my search.
How often do compatible Gibbs pans come up for sale? Seems like everyone and their grandma has one, but I can't find any on ebay or reverb.
Also, I suddenly got curious, would it be feasible to buy two pans, one with the proper input impedance and another with the proper output impedance, and transfer one of the transducers over to the other to create a compatible pan? Seems like the springs would have to be detached and reattached to do this. Is that easier than it looks?
— Monsters From Mars
http://monstersfrommars.com
|
DannySnyder
Joined: Mar 02, 2006
Posts: 11010
Berkeley, CA
|
Posted on Jul 20 2023 10:04 AM
Thor my advice is to be patient, pans will show up. I've had good luck asking sellers who don't post the impedance to check it for me. Though a few I had to talk through how to do it.
— Danny Snyder
Latest project - Now That's What I Call SURF
_
"With great reverb comes great responsibility" - Uncle Leo
I'm back playing keys and guitar with Combo Tezeta
|
edwardsand
Joined: Jun 29, 2018
Posts: 660
|
Posted on Jul 20 2023 01:52 PM
I found these photos of Accutronics provided info on a Reverb ad, so I'm sticking them here because they are relevant to figuring out what kind of old reverb pan you are looking at. They give the DC resistance =/-10% for input and output, and also list the bobbin colors for the different transducers (don't think that applies to the old Gibbs pans).
|
Boulder_Bob
Joined: Mar 29, 2006
Posts: 130
|
Posted on Jul 27 2023 10:19 AM
does anyone have a reverb tank made by beautiful girls?
https://i.imgur.com/PntAQuu.jpeg
|
Thor
Joined: May 21, 2006
Posts: 35
|
Posted on Aug 28 2023 01:12 PM
I ended up getting a couple incorrect pans with the thought that I would do some surgery and transplant a transducer from one to the other to get a proper input+output impedance combination. But impatience/curiosity drove me to see what would happen if I just plugged an AO-23580-10 (1.8ohm input, 48ohm output) pan into my SurfyBear. I expected it to sound too weak or the frequency response to be way off. It at least didn't explode. I do have to crank everything to the 7-8 range but it sounds pretty damn good. It's a very usable surf tone, which is not something I could say for the stock 4AB3C1B.
My question for anybody electronically-minded is, do I risk damaging my SurfyBear by using a pan with output impedance that is so much lower than expected? Or does this just simply produce less signal and therefore safe?
— Monsters From Mars
http://monstersfrommars.com
Last edited: Aug 28, 2023 13:16:28
|
BenPerkins
Joined: Oct 19, 2011
Posts: 130
|
Posted on Jan 28 2024 06:17 PM
Question… is this compatible with a Fender 6G15?
1122-6416 - AO23580-11
Impedance 172/177
Second tank with no outside numbers, impedance is 15 and 17 Ohms @ 20K.
Thank you.
— I want to hear Caravan with a drum solo.
Last edited: Jan 28, 2024 18:25:31
|
SandBug
Joined: Feb 22, 2016
Posts: 439
California
|
Posted on Jan 28 2024 07:28 PM
BenPerkins wrote:
Question… is this compatible with a Fender 6G15?
1122-6416 - AO23580-11
Impedance 172/177
Second tank with no outside numbers, impedance is 15 and 17 Ohms @ 20K.
Thank you.
No, and no.
|
gtwiss
Joined: Feb 01, 2015
Posts: 3
Chapel Hill NC
|
Posted on Jan 31 2024 11:06 PM
Another variation: a faint "1122" metal stamp along with inked "6240" date code - no info. labels or other markings on the pan.
Impedances: 1.5/175 (in the expected range)
|
April Birthdays 
