Hi,
Thank you for reading this.
I'm new here and love this site. Hopefully some of you folks can help me with my old JBL speakers.
I bought a set of JBL L40 bookshelf speakers probably 25 years ago from the Appliance Store for $338 each or a pair... I forgot.
They've served me well although I've had to have the woofers re-coned once.
BTW, these are the 2 Way L-40s.... not the European 3-way variation that I hear exists.
Over the past years, however, I've been having trouble keeping tweeters in them. I bought original, factory replacements (033) from JBL, but they became obsoleted and I started putting in Morel MDT 033 tweeters http://www.morelhifi.com/products/raw_tweeters.html as a replacements. They sounded great, but they get fried too if I turn the volume up a bit too loud.
I am wondering, why do you think this is happening?
1. Could I have a "dirty" receiver/amp? (Technics SA-550) - It's rated at 70W/channel and the L-40 papers I have say that's the maximum suggested output for the amp. BTW, I was thinking of upgrading to a new receiver... a Sony ES-STR-DA2400ES which has 100W X7 for output.... Not a good idea for these speakers???
2. Have the crossovers gone bad due to the fact they they are an capacitive and inductive cuircuit and caps do change in value with age?
3. Am I just playin the things too loud? (It wasn't THAT loud!)
4. Are the Morel's a good match?
5. Am I getting some bass freqs sent to the tweeter somehow?
I think I'd love to get these things fixed again. I always liked them. Suggestions from you experts would be GREATLY appreciated!
Thom
P.S. Anyone thing those inline fuses are good? I see they sell tweeter fuses... Maybe I should invest in some.
THANK YOU!
I am only running the speakers with the system as I mentioned...
An SH-8055 Technics Graphic EQ
A few cassette decks and a turntable
And this receiver:
Technics SA-550 Receiver
Product Features:
Computer Drive
New class A
FM/AM Random 16Ch Preset Tuning
Manual and Auto Tuning
Stereoplex function
Subsonic Filter, High Filter, and Loudness options
Input Selector: Phono, Tuner, TV, CD/Aux 1, Video/Aux 2