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Hi Tom! Here's some stupid suggestions 'cause you've probably already thought of these, but anyway... What happens when you try a different Mackie channel? What happens when you patch the DL-4 into/out-of aux or effect send/returns instead of using the insert? What happens when you substitute another unit (non DL-4) for the DL-4? (You could even use a plain wire.) I suspect a fault in the mixer since you've changed everything else. Dennis Leas ------------------- dennis@mdbs.com ----- Original Message ----- From: Tom Heasley To: Loopers-Delight@loopers-delight.com Sent: Thursday, March 21, 2002 2:09 PM Subject: DL4 problem Maybe someone has an idea about this...I've had the DL4 running problem-free for going on two years now. Always connected the same way - Hosa insert patch cable (1) connected from the L input/L output to the channel 1 (same channel as my clip-on mic) insert on my Mackie 1202. Recently, I was getting a tone (registering as a high D# on my tuner) generated thru the system, which I was able to trace to the DL4. I put in an different Hosa cable and the sound got slightly louder. I have a performance this Friday, so I went and bought another DL4, adapter and a Monster patch cable - same thing, except that now - regardless of which unit or cable - tone generation seems to be intermittent (?...), but putting an insert in the Mackie jack 'deadens' the mixer - no levels on my effects with it plugged in exactly where it has always been. Anyone have any idea? Tom Heasley Tom Heasley Composer/Tubist 427 Alma St., Suite 206 Palo Alto, CA 94301 P: 650.322.3633 F: 419.831.3809 http://www.hypnos.com/heasley http://bayimproviser.com/TomHeasley www.loopers-delight.com/cgi-bin/profiles.cgi http://kalvos.org/heasley.html