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The thing I'm wondering about the new plex, is can it still do the changes that Andre was writing about a little while ago? Jeff -----Original Message----- From: Bret <echoplex@yahoo.com> To: Loopers-Delight@annihilist.com <Loopers-Delight@annihilist.com> Date: Monday, June 15, 1998 6:20 PM Subject: Re: Is the new EDP more than just a software update? >Eric, > >Kim would be the expert with this topic, but I have some experience >with older/newer EDP so here is my $.02. > >$500 USD for a full memory EDP with footpedal sounds very good to me. > >I own an older (96) and a newer EDP (98). I collected some >information from Oberheim, and from Kim regarding production changes >that have occurred on Echoplex. As far as I can tell, you can upgrade >an Older EDP to be functionally equivalent to the New EDP. Several >changes are documented on the Loopers Delight Web site, I believe >under EDP FAQ. Here are some more notes I got from Kim (the comments >are his): >------------- >ECO's >> >>1. R21 - 330k 5% 1/4w CF. >>2. R20 - 330k 5% 1/4w CF. > This is in the limiter circuit. I wouldn't bother with this, >it won't make much difference. >>3. R7 - 75k 5% 1/4w CF. > changes clipping indication on input LED, good idea to change, >but not very important >>4. R62 - 10k 5% 1/4w CF. > this is correct. allows BrotherSync to work with many more >units than before. >>5. R75 - 820 ohm 5% 1/4w CF. > correct, optimizes a delay time >>5. C25 - R 100 ohm 5% 1/4w CF. >>6 C26 - R 100 ohm 5% 1/4w CF. > This affects the limiter circuit which never worked very well. > I would leave it alone. If you really want the digital input limiter >working better, I have a better fix for it. It's harder to do and >requires tacking a resistor on the bottom. I think it's easier to just >set the input gain so that you don't clip.... >>7. R13 - R14 - 47.5k 10% 1/4w MF > This widens the range of the trimpot adjustment. Don't do this >one, since you would then have to readjust the trim pot. If you really >want to do that, I could explain it to you. >>8. Both Pals upgrade with new equations > fixes timing problem that sometimes caused weird display and >other problems on a small number of units. >>9. Cut Pin 5 of U12 ADC0804CN > important, fixes heat problem >--------------- >In checking my 96 EDP I found all the resistor upgrades were present, >except R75, which I changed. I had gotten PALS from Oberheim (during >my warranty period), which I changed. I bought the Ver 5.00 Eproms, >and installed them. > >You can open the EDP and visually inspect the resistor locations for >the values, and for the cut leg on the ADC. > >I would not recommend changing resistors in the EDP yourself, unless >you feel completely competent changing through hole resistors on a >PCBA, and know how to protect static sensitive devices. You might >find a GOOD technician, or ask Oberheim if they would make the needed >changes (for $ of course). > >As is apparent from Kim's comments, some changes are more _important_ >to performance than others. Some may be irrelevant to you (like >brother sync). The Firmware upgrade (EPROMS) to Ver 5.00 is a high >priority, in my opinion. > >bret > >---eric potter <babycat@hotmail.com> wrote: >> >> >> I'm trolling for an EDP. One option is a used one with full memory >and >> foot controller for $500. Figure in $45 for new software, not a bad >> deal, right? >> >> But I'm wondering if there is more to the latest EDP bought new than >> just the software update (which, don't get me wrong, is a fantastic >> improvement) Were there changes to the hardware or controls, etc. >> Am I missing out by not buying the new box? >> >> thanks all, >> -eric >> >> ______________________________________________________ >> Get Your Private, Free Email at http://www.hotmail.com >> >> > >_________________________________________________________ >DO YOU YAHOO!? >Get your free @yahoo.com address at http://mail.yahoo.com > >