test ----- Original Message ----- From: Philip Stortz <[EMAIL PROTECTED]> To: G-List <[EMAIL PROTECTED]> Sent: Thursday, March 28, 2002 2:39 PM Subject: Re: Question about recording LPs into the Mac
> it's definitely worth a try with the preamp, it may have a lower output. > radio shack might have an attenuator that's appropriate and less costly > than a mixer which would be terrible overkill. if you do wind up > building an attenuator start with 10k ohm resistors, that should drop it > about 3 db, from their you can try smaller resistors in parallel to get > higher attenuation/smaller signal. you can use 1/4 watt or whatever, > and the values aren't critical. you could even just solder another > resistor in parallel to the original parelel resistor if you need to cut > it down more. good luck. > > Tom Baker wrote: > > > > Phil, > > > > Once again I appreciate your help. > > > > I can take the sound out of the amplifier's headphone output, or out of its > > speaker output, but both of those sources introduce hums into the > > recordings, so I'm stuck with the only other output on the box, which is > > the output-to-tape. That one doesn't hum. But that port, as I've complained > > about so often, sends out a signal that's so loud it maxes out the > > software's input control and clips the music. Since there doesn't seem to > > be any software that can throttle it down to the proper level, the solution > > is going to have to be from hardware, and if an analog attenuator (whatever > > that is) would do it, then that would be great. > > > > Before I put you to the trouble of building one for me, however, or me > > digging out a soldering iron myself, let me look into some other possible > > solutions. For one: a pre-amp that I originally bought to try to strengthen > > the weak input I was getting from microphones into the iMic might actually > > be put to better use to replace the turntable's old amplifier (it didn't > > work on the microphones anyway). The pamphlet that this pre-amp came with > > says that that's what it was really intended for: to go in between a > > turntable and something else (in this case, the iMic/Mac). This pre-amp is > > just a little black box with two inputs (L and R) on one side for the > > turntable and two outputs (ditto) out to the whatever. The reason I can't > > try it out right now is that the two-pronged plug (L and R) from the > > turntable to the old amplifier is too narrow to fit into both the inputs on > > the pre-amp box, so adapters will be required. I'll go to a Radio Shack > > tomorow and get whatever it takes to get the turntable's plug into the > > pre-amp. The only thing that worries me about this setup is that, once > > again, I'll be sending the signal from the turntable into the Mac through a > > device that has no volume control, just like the output-to-tape port on the > > old amplifier. If it turns out to be too strong a signal again, I've gained > > nothing, and lost the time and the price of the adapters. > > > > But, I have the pre-amp sitting here, and some spare time tomorrow, and I > > might as well try it. I ought to be due a success after all these failures, > > and maybe this will be it (knocking on wood). > > > > Thanks again, > > > > Tom > > > > At 10:14 PM -0700 3/27/02, Philip Stortz wrote: > > >you probably need an analog attenuator between the imic and the amp, or > > >try the headphone output on an amp so you can adjust the level with the > > >volume control. if you know anyone who does electronics it's easy to > > >make one, email me off list for a schematic, or if you really want one > > >and can't find someone to build it i might be able to, for a reasonable > > >(probably cheap) fee or trade. my time is tight usually, but i do > > >enjoy helping people (and showing off of course). to build an > > >attenuator you put a resistor in series with the amps output and another > > >in parallel (line to ground/shield) on the imic side, that's the quick > > >and dirty way but usually works great. > > > > > >Tom Baker wrote: > > >> > > >> Thanks again Troy. I downloaded Coaster, but it won't work with Sound > > >> Studio, and when it's working by itself, it still can't lower the input > > >> from my turntable's amplifier enough to prevent clipping. With Coaster's > > >> input sliders (L and R) pulled all the way to the bottom of their scales, > > >> the input continues to run way up into the red, just as it does in Sound > > >> Studio. I guess the output from this old amplifier's output-to-tape port is > > >> just too strong. > > >-------------- > > > > -- > > G-List is sponsored by <http://lowendmac.com/> and... > > > > Small Dog Electronics http://www.smalldog.com | Refurbished Drives | > > -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | > > > > Support Low End Mac <http://lowendmac.com/lists/support.html> > > > > G-List list info: <http://lowendmac.com/lists/g-list.shtml> > > Send list messages to: <mailto:[EMAIL PROTECTED]> > > To unsubscribe, email: <mailto:[EMAIL PROTECTED]> > > For digest mode, email: <mailto:[EMAIL PROTECTED]> > > Subscription questions: <mailto:[EMAIL PROTECTED]> > > Archive: <http://www.mail-archive.com/g-list%40mail.maclaunch.com/> > > > > Using a Macintosh? 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Small Dog Electronics http://www.smalldog.com | Refurbished Drives | -- We have Apple Refurbished Monitors in stock! | & CDRWs on Sale! | Support Low End Mac <http://lowendmac.com/lists/support.html> G-List list info: <http://lowendmac.com/lists/g-list.shtml> Send list messages to: <mailto:[EMAIL PROTECTED]> To unsubscribe, email: <mailto:[EMAIL PROTECTED]> For digest mode, email: <mailto:[EMAIL PROTECTED]> Subscription questions: <mailto:[EMAIL PROTECTED]> Archive: <http://www.mail-archive.com/g-list%40mail.maclaunch.com/> Using a Macintosh? Get free email and more at Applelinks! <http://www.applelinks.com>
