dano amp 8 ohm tap
Hi Skip, i got a mid 50s danelectro 272 centurion amp and the original speaker just craped out, i think its original. I noticed that the OT has 3 wires going to a terminal strip with 3 posts, what is the extra ohm tap? Is there a way to test it with a multimeter ?
Thanks Skip, the speaker was a 8 ohm smooth cone utah 328839 (V12L7) I plan to get it reconed at some point. i put a 1961 cleveland speaker i got for cheap in for now ,its supposed to be there version of a p12n. one thing i noticed was before the utah speaker went bad the the pots were kind of scratchy and the amp would feed back sooner than i would expect alittle past 9 oclock. after i put the cleveland speaker in the pots were all quiet no scratchy sounds and i can crank the amp past 12 oclock and get no feedback, and the amp is super quiet, no white noise or anything. Does that sound like normal failing speaker symtoms, or is the cleveland just more efficent?
Hello Bluevan- I can't imagine how the speaker would affect the scratchy pots, but speaker efficiency would certainly affect tone and feeedback. Maybe just turning the pots cleaned them up enough to quiet them down.
So I thought the 1958 Utah speaker was done cause the surround had a few cracks and was sounding super nasty So naturally changed it out. Tried 3 different speakers, they sounded ok but not as good as the Utah. So I did alittle research and read use rtv to patch the cracks let cure over night then dope the surround with contact cement. I tested it today with the bogen head first , holy smokes ,it sounds killer. Threw it back in the Dano and wala, brought the tone back to the amp! you would never know it had all that stuff on it by the way it sounds. way cheaper than a recone too! Oh and you were right about the pots smoothing out from turning them, cause there quiet even with the Utah speaker.
Hello Bluevan- That amp has both 4 and 8 ohm taps. A good digital meter will show a slightly higher resistance on the higher-impedance tap, but in general a meter won't tell you much about an output transformer other than an open winding. Use the same wires as the original. One will be connected to the chassis; that is always "ground".
You might consider reconing that speaker if you really liked it. I dig Neal's Speaker Service in Sacramento.