I just ordered a 3875 kit and I want to build a small single powered speaker for a kid to plug in his iPod. The problem is that the iPod as all MP3 players has stereo output. What is the simplest way to combine the channels to feed a single 3875?
I also need help picking out a pot volume control. I tried to follow a thread on the PEC pot but got lost by page 12
How much output does an MP3 player put out? Would the gain be set higher in the 3875 for this application?
The speaker can only handle about 30W-50W or so.
Thanks for all the help...I need LOTS of it. I'm an artist...not a scientist
I also need help picking out a pot volume control. I tried to follow a thread on the PEC pot but got lost by page 12
How much output does an MP3 player put out? Would the gain be set higher in the 3875 for this application?
The speaker can only handle about 30W-50W or so.
Thanks for all the help...I need LOTS of it. I'm an artist...not a scientist
Use the inverting schematic in the datasheet, and connect each input via its own 10K resistor. Headphone out is likely to be a bit more than line level, so I'd start with a gain of about 15. Start with a normal 20K or so log pot, you can always go more exotic later, but to be honest, I wouldn't worry that much for your application. You could always forget about a pot at all, and just use the volume on the ipod as normal.
I was going for a vintage Fender look with a "chickenhead" knob...wanted to give the kids some kind cool volume control...
http://www.angela.com/catalog/guitar-amp-parts/FenderAmpKnobNo.One.gif
Tell me more...thanks!
http://www.angela.com/catalog/guitar-amp-parts/FenderAmpKnobNo.One.gif
Tell me more...thanks!
pinkmouse said:...Headphone out is likely to be a bit more than line level, so I'd start with a gain of about 15...
Actually I recently drove an Adcom GFA5200 with a CD player directly from the headphone jack and then with an Adcom GTP350 pre-amp and the pre-amp drove the amp much harder. Or am I thinking about this the wrong way?
I usually Google the sh_t outta stuff. What are my keywords at least, Pragmatic Al? You're asking me to Google how to slice off my own silicon and mica wafers for homemade transistors?
I actually searched the topic here extensively but most cool threads here die quickly yet the ones expounding one's prowess seem to go on forever...strange forum this DIYaudio
I actually searched the topic here extensively but most cool threads here die quickly yet the ones expounding one's prowess seem to go on forever...strange forum this DIYaudio
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