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Hi All, I've been (pardon the pun) out of the loop for a few months, indeed since the first appearance o'the Line6 DL4. For those without long and detailed memories, I loop by putting a Jam-Man in delay mode, with single repeat, in a hardwired loop (o/p-i/p) with a volume pedal in't to control the feedback. The system works well, but 'tis none too efficient having a 19" rack box on the floor, basically acting like a huge great glorified stompbox (ie a taptempo 32 sec delay). Anyhow, out has come the DL4. And much verbiage has been verbed about it (how come when I'm on this list I start wtriting like dt?) but questions the size of Texas yet remain. Chief among them are: 1. Can it be set to just an ordinary, tap-tempo, 14-sec delay? 2. I hear it's stereo. Is that 14-sec, looped stereo? 3. Half-speed mode. Does it sound any good? 4. Can you change the delay length on the fly? Not change the speed. On my JamMan, as configured, tapping a new loop when one is already playing results in the looping of just the segment that was playing between the taps (if y'follow). Or is it like the JM in Loop mode - once tapped, the tap button becomes record? 5. Can you use the EXP-pedal inputs (I hear they're there) to control output level and feedback? I've looked at the online manual and suspect I know the answer to some of these, but thought I'd better ask the experts. I think it looks unpromising (No feedback control!!!) but best to be sure. Why oh why can't someone make a simple 20-second taptempo stompbox?? Much 'ppreciated, Mike PS Those with gargantuan, nay behemothian, mamories will recall much discussions about (a) guitar resonances and (b) possible avenues for guitar-related research. Such individuals might be glad to know that I've got a few research projects on the acoustics of electric guitars on the go, and such projects seem to be building up a head of steam. And all this from a debate, on these very pages about 18 months ago, between myself, our moderator and Matthias Grob about whether resonance was good or bad for sustain.... _____________________________________________________________ Michael Pycraft Hughes, Ph.D. Tel: (+44) 1483 876775 Lecturer in Biomedical Engineering, Fax: (+44) 1483 259395 University of Surrey, EMail: m.hughes@surrey.ac.uk Guildford, Surrey, UK www.surrey.ac.uk/MME/Research/BioMed