Mark D C

Hello, Chris1'. Yes, I did isolate each driver by using the controls. This made a small difference. I haven't tried the second method, connecting the wire directly to the terminals, but will do tomorrow. Now to the modification ... Thanks.

These are the 11" foam surround woofers.

Thanks, every After just now opening the first speaker, to my dismay, I discovered that in fact, the caps were properly installed. So, as to the recommended and critical modification to the tweeter, could someone please point me to the instructions. Thanks again!

Hello. About 8 months ago I picked up a pair of early '70's AR-2AX speakers. They still had the original midrange drivers, woofers, capacitors and pots installed and a pair of replacement HiVi Q1R 1 tweeters. I replaced the capacitors and pots in December with Dayton Audio PMPC-4.0uF 250 V caps for the midrange and DMPC-5.6uF 250V and PMPC-0.47uF 250V soldered together for the high range drivers. Last month I decided to upgrade from the HiVi Q1R 1 a to pair of Peerless tweeters (https://www.parts-express.com/pedocs/specs/264-1676--peerless-da25tx00-08-spec-sheet.pdf). After 40+ hours I began to notice what I will describe as a buzzing sound in the middle frequencies. Yesterday I called and spoke to a tech person who, although unfamiliar with the AR's, made an educated guess that there was an issue with capacitors. Does anyone have a clue as to why this is happening? Thank you.