The tweeter in each of my PSB B2s has gone bad. They are still functional, but their output is quite low. I have a pair of B1s that have the same tweeters, so I swapped them out. What a difference. The ones that are messed up sound like you have your hand over them when you are listening to them. You can hear them, but you aren't getting most of the frequencies.
First of all, I need some replacement tweeter. Any suggestions where to get these. I can't find anything online. Or should I replace with different tweeters.
Second, what made them go bad? Now, I didn't buy the speakers brand-new, but they were in excellent shape when I got them 3 years ago or so. I moved one year ago, and immediately noticed the problem. I thought it might have been the room at first, but it was the tweeters. Of course, they could have been bad all along and I didn't notice since I had a great listening room before I moved.
I am wondering if UNDERPOWERING them would have messed them up. I have been running them with an Onkyo 601. It does an OK job. It has been pretty good to me, actually, but I don't have anything to compare to.
These are the specs on the Onkyo:
Stereo Mode Power: 110 Watt @ 6 ohm, 1 kHz, THD: 0.08%
Surround Mode Power: 85 Watt @ 8 ohm, 20 Hz - 20 kHz, THD: 0.08%
These are the specs on the speakers: Frequency response is rated by the company as going from 49Hz to 21kHz +/- 3dB (measured on-axis). Anechoic efficiency is rated as 89dB/W/m, and the impedance is said to be 6 ohms nominal, hitting a 4-ohm minimum. PSB recommends the use of amplifiers rated from 10 to 100Wpc.
So, did these tweeters fail due to faulty power? Should I upgrade my receiver for this reason, or were they bad to begin with? The rest of the speakers work fine.
Thanks for any help you can offer