jantypas@hope.UUCP (John Antypas) (03/22/88)
A question for the net experts in this sort of thing? We find ourselves in need a mixer for audio recording. Nothing fancy, but nothing standard either. We could go to a certain retail electronics store and pay their "You can't go anywhere else" prices, but why? Therefore, I (not an engineer) am writing to the experts for their wisdom on this subject. I may be wrong, but I figure that a 6 in/2 out (3 stereo/1 out) mixer can't be that difficult (in theory) to build. Is it? What would we need in terms of basic parts? (Obviously we would need 6 pots, 14 .25" jacks), What about the problem of signal degradation? How do we overcome the problem of squeezing six inputs into two? Now let's get fancy. What would it take to add reverb? Is this even feasable? If anyone has any answers/schematics they'd like to provide, we'd be very grateful. Many thanks. John Antypas uucp: ...!{bu-cs, garp, pyramid, reed, spl1, ucsd!ucrmath}!soft21!jantypas Internet: jantypas%soft21.UUCP@eddie.MIT.EDU BITNET: JANTYPAS@UCRVMS John Antypas -- Soft21 --21st Century Software: New Product from FastBuck Enterprises! New Puzzle -- Rubik's Cling Wrap! The puzzle you get stuck on! (Along with everything else ... almost) UUCP: {garp, killer, pyramid, reed, sdcsvax!ucsd!ucrmath}!soft21!jantypas Internet: jantypas%soft21.UUCP@{eddie.MIT.EDU, UCSD.EDU, uunet.UU.NET}
dje@datacube.UUCP (03/25/88)
I built a sound mixer 11 years ago. Two phono sources, two line sources, a Mic., Cueing. It used BiFet op-amps (TL084), audio taper potentiometers, a tone circuit borrowed from the National Audio Handbook, two great phono preamps borrowed from the now defunct Advent Reciever (I made PC boards for these), an op-amp mike preamp, a couple of radio shack LED V-U meters, a box, power supply, and about 50-70 hours. As a new grad with time and no money, it was fun. But I wouldn't repeat the process today seeing some of the low cost mixers available. Dave Erickson ---------------------------------------------- ------ Datacube Inc. / /| 4 Dearborn Rd. ------ | Peabody, Ma 01960 || \| | ihnp4!datacube!dje || /|/ Human:(617)535-6644 ------ Fax: (617)535-5643