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Chip Amps Amplifiers based on integrated circuits

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Old 4th October 2018, 01:37 PM   #3191
Carlp is offline Carlp  United States
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Originally Posted by avtech23 View Post
Apologies, I didn't get a notification this time.

Yes, at this stage I am only using a bluetooth input but I have a hole ready to accept a 3.5mm jack (just need to buy the jack).

The bluetooth module has a function whereby it detects an additional input source and it will pass-thru the signal.
Ah, I see. Thx. Nice project!
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Old 26th October 2018, 07:35 PM   #3192
Clueless but avid is offline Clueless but avid  Germany
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Two out of three ...
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Old 9th November 2018, 12:46 AM   #3193
farley is offline farley  United States
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Default LM386 Bench Speaker

With a whopping output of about 500mW max, this little LM386 amplified speaker departs a bit from most of the creations posted here. The case components were modeled in SolidWorks and were printed with PLA on a Monoprice Select Mini 3D printer.
More info is here: LM386 Amplifier For The Bench – crosstimbers audio
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Old 9th November 2018, 12:58 AM   #3194
avtech23 is offline avtech23  Australia
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Originally Posted by farley View Post
With a whopping output of about 500mW max, this little LM386 amplified speaker departs a bit from most of the creations posted here. The case components were modeled in SolidWorks and were printed with PLA on a Monoprice Select Mini 3D printer.
More info is here: LM386 Amplifier For The Bench – crosstimbers audio
Nice to see something different.

What are your thoughts on the 3d printer? Your end result looks pretty good.
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Old 9th November 2018, 01:10 AM   #3195
farley is offline farley  United States
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Originally Posted by avtech23 View Post
Nice to see something different.
What are your thoughts on the 3d printer? Your end result looks pretty good.
Thanks. The 3D printed case took a couple of coats of filler primer, some filler putty, and some sanding to smooth it to the point where I got tired of messing with it. The paint is 2 coats of Krylon Gloss White Enamel.

My experience with the Monoprice printer has been mostly positive. The SD card reader has stopped working so I have it connected to my computer via USB, which works so far. I do, however, find the available build volume of the Mini to be constraining.
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Old 12th November 2018, 07:48 PM   #3196
MrKettle is offline MrKettle
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KMTech 24dB/octave crossovers and gainclone boards, powered from a +/-35V supply in a separate box. Gives a very acceptable near field sound from a pair of Tannoy 607s run active.

Wiring is a bit "prototype" for now, while the roundtuits are accumulated.
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Old 14th November 2018, 06:28 PM   #3197
Lojzek is offline Lojzek  Croatia
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Originally Posted by farley View Post
With a whopping output of about 500mW max, this little LM386 amplified speaker ...

Absolutely a wonderful little project, something one should try at least a few times in a lifetime as a father/son project or I don't know, to make your friends happy by giving them a gift that you made with your own hands.
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