Is diaphragm removal required to verify magnet alignment? The tweeter only distorted on some loud piano notes.
My impression was that it was dead. Your problem is much subtler. What happens when you drive the loudspeaker with the other amp channel?
dave
The same result. Distortion followed the speaker. The tweeter was replaced at the time (30 yrs ago). Problem fixed. I kept the bad tweeter. Is there a way to fix this driver as a potential backup or sale? The 101s thrive on a lot of power. So you never know what the future holds.
Just measure the rim-magnet distance and the magnet is perfectly placed in the centre. The distance is 1.8mm (or 0.7in)
if it is a spare t27 and you can play around. First try to repaint the scratch and see any improvement. Sometime it is fun to know what went wrong of this t27........even it cannot be used as spare in the end.
T27 is not that critical comparing with the woofer/mid unit. LS35A needs a matched b110 but not the t27. T27 has a much lesser variation in performance.
T27 is not that critical comparing with the woofer/mid unit. LS35A needs a matched b110 but not the t27. T27 has a much lesser variation in performance.
Measurements along the mounting holes are 17.95mm, 19.10mm, 18.13mm. Measuring around like a clock face 17.80, 18.98, 18.90, 18.13mm.
I measured the distance along the mounting holes as well. Sorry and the distance is 18mm, not 1.8mm.
The below links are the example of the voice coil (20mm) and they may be used in the voice coil replacement.
https://www.ebay.ca/itm/192556874399
https://www.ebay.ca/itm/234284477796
If you are starting to repair, you can repaint the scratch first. Further you can remove the diaphragm. and if the voice coil stuck due to the dislodgement of magnet you then can order the coil to repair it.
The below links are the example of the voice coil (20mm) and they may be used in the voice coil replacement.
https://www.ebay.ca/itm/192556874399
https://www.ebay.ca/itm/234284477796
If you are starting to repair, you can repaint the scratch first. Further you can remove the diaphragm. and if the voice coil stuck due to the dislodgement of magnet you then can order the coil to repair it.
and this one
https://www.ebay.ca/itm/193922221060
19.43mm in diameter. I can't remember if the diameter is 20mm or 19.43mm. But you can make a measure before order.
https://www.ebay.ca/itm/193922221060
19.43mm in diameter. I can't remember if the diameter is 20mm or 19.43mm. But you can make a measure before order.
I was using Cyanoacrylate adhesive aka Krazy glue. Since the magnet hold the plate very tight even there is no glue on it, you can move the magnet to the centre as possible as you can. Then I applied the glue at the edge and it will diffuse into the gap.
Before you apply the glue you can place the diaphragm back temporary and check if it can sound normally.
Hope this help
Before you apply the glue you can place the diaphragm back temporary and check if it can sound normally.
Hope this help