wykropkowana
Temat: Roland IR3R05 custom vca/vcf
I put this topic in both design and parts sections, because I think it has to do with both subjects. With exactly same content - It's still considered as cross posting, and cross posting is still considered harmful as it clutters the forum.. Oh well. And wouldn' t it simplify the process of building a whole filter module from ĂÂ scratch? Using a chip you can't get datasheet for? You'd have to trace circuit from Roland service manuals.. Bye, Moebius p.s. Check these topics: http://www.midibox.o...;num=1096464315 http://www.midibox.o...;num=1061900574
Źródło: midibox.org/forums/index.php?showtopic=3579
Temat: Building Sasha's x0xb0x
Roland Service Manual is very well documented to tune the x0x by the way Thank you Julien, That's some of the most interesting advice I have heard so far. Right after I'm done this post I'm going to set my sights on a 303 service manual. You guys will probably think I'm crazy but I have soldered in all resistors, all electrolytic and ceramic caps, and a some polyester caps. Oh, and sockets for all ICs. I have selected my LEDs (orange, red...
Źródło: midibox.org/forums/index.php?showtopic=11621
Temat: Tu dzielimy się wiedzą o multiefektach firmy BOSS.
...wejścia: GUITAR INPUT: 1M ohm AUX IN: 22k ohms Nominalny poziom sygnału wyjściowego: -10 dBu Impedancja wyjścia: 2k omów Wyświetlacz: 7 segment, 2 cyfry LED Zasilanie: DC 9 V bateria sucha (R6/LR6(AA)) x 6 Zasilacz AC (BOSS PSA : sprzedawany oddzielnie) Pobór prądu: 130 mA Szacowany czas ciągłego operowania na bateriach: alkaliczne: 12 h, węglowe: 3.5 h (zależy od warunków używania) Akcesoria: Owner's Manual, Dry Batteries (Alkaline: LR6 (AA) type) x 6, Roland Service (Information Sheet) Opcje: AC Adaptor: BOSS PSA series Przełączniki nożne: BOSS FS-5U, FS-6 Rozmiar i waga: 384 x 229 x 74 mm; 3.5 kg I GT 10 do tego AD Conversion 24-bit + AF method DA Conversion 24-bit Częstotliwość próbkowania 44.1 kHz Pamięć programów 400: 200 (user) + 200 (preset) Nominalny poziom sygnału wejściowego INPUT: -10 dBu RETURN: -10 dBu Impedancja wejściowa INPUT: 1 M ohm RETURN: 220 k ohms Nominalny poziom sygnału...
Źródło: forum.magazyngitarzysta.pl/viewtopic.php?t=41
Temat: Roland IR3R05 custom vca/vcf
...http://www.sharpmz.o.../8253ovview.htm http://www.intersil....fo.asp?pn=82C54 A MBHP Core with an AOUT module would be great to output envelopes, LFOs, etc. which in turn could be connected to analog VCFs and VCAs... Yes, of course ;) Bye, Moebius p.s. I didn't make calculations for this, but I hope that usable ultrasonic frequencies (still near enough half note relationships) are available, so those that need more waveforms (sawtooth waveshaper is in Roland service notes) can make use of a "digisound" type wavetables ;D
Źródło: midibox.org/forums/index.php?showtopic=3579
Temat: Building Sasha's x0xb0x
...(think to the maintenance) I plan to follow the guide now. if it is your 1st x0x you have to do such. If it is not you can solder things as on a whole kit : first smaller (diodes ...) then resistors, trimmer, condos ... and last the ICs, after you have verified that the Volts are corrects. I did it on a bunch of 3 x0x and they work ! it goes faster too. Lo-Fi DIY scope is much better than using the phones. the best is a real oscillospcope and your ears. finally make a A/B test versus a real TB. Roland Service Manual is very well documented to tune the x0x by the way
Źródło: midibox.org/forums/index.php?showtopic=11621