Cortado skrev:Den första länken går till en sida för Spendor BC1...
Förvisso helt sant, men sidan innehåller mycket text och en bra bit ner på sidan handlar det faktiskt om SP1 och hur man lyckats prova ut nya kondensatorer till SP1-filtret och tillämpa detta även på BC1:
"In the meanwhile I had my SP1's to experiment with and they were stripped down and put back together several times whilst I tried different capacitors on the bass section and the HF1300 section of that crossover. Eventually I found a good radial polyester cap that gave excellent bass and an excellent (but expensive) polyprop cap (the yellow one in the picture) to use in parallel with the 3.0 uF paper in oil (final configuration 3.0 uF PIO and 0.33 uF polyprop to make a composite value of 3.33 uF). The first time I tested the rebuilt SP1's was a real revelation. They were and still are amazing.
...
After the success with the SP1 rebuild I replicated the work in the BC1 xover using the caps that I discovered working best with the bass unit and hf1300."
Det kan alltså finnas anledning att värka fram ett nytt filter till dessa gamla burkar.