The dumbest design flaw I've seen in a while. Logic3 MIP108 - Page 1
Forum section: electronics / general

author: Jwalling
author_rank: Unknown
timestamp: September 09, 2016, 07:37:18 pm
content: Bought this piece of junk at a garage sale.https://www.amazon.co.uk/MIP108-I-Station-Speakers-Docking-Station-White/dp/B000G0G6K2Sounds OK enough for what it is. Not using it with an iphone, I just wanted something better sounding than my laptops built in speakers on thefront porch for the summer.The problem: If the thing doesn't detect any sound for about 10 seconds,it goes into power management mode and cuts out the amp. If you'relistening to music that has quiet sections you'll get chunks of audio cutout of the music while the amp turns off and back on!Good grief, the idiot engineer who designed this! I hope he got his pinkslip.Maybe this winter I'll open it up and see if there's a way to disable this"feature".

author: Monkeh
author_rank: Super Contributor
timestamp: September 09, 2016, 07:48:15 pm
content: Quiet.. sections..?You must be an old duddy, music is never quiet.

author: wraper
author_rank: Unknown
timestamp: September 09, 2016, 07:52:59 pm
content: Quote from: Monkeh on September 09, 2016, 07:48:15 pmWith current loudness wars, probably. Mostly shite with overcompressed dynamic range available, remasters of old recordings can go into garbage bin either because sound like crap too.

author: Jwalling
author_rank: Unknown
timestamp: September 10, 2016, 12:03:11 pm
content: Quote from: Monkeh on September 09, 2016, 07:48:15 pmI suppose, I'm going on 54.Some music where the thing cuts out:Pink Floyd, Dark Side of the Moon and Animals.Lots of bootleg/live recordings where it might be 20 seconds between songs.Completely useless on classical music.

author: 3db
author_rank: Frequent Contributor
timestamp: September 10, 2016, 01:32:16 pm
content: Modern "music"

author: b_force
author_rank: Super Contributor
timestamp: September 10, 2016, 02:04:33 pm
content: 10 sec is really minimaal indeed.Mostly it's like a minute or two.I would suggest modifying the thing. Mostly it's just the enable pn on the amp. Just mount a RC network in series and that would give some extra time.Or just disable the mute function. Most of these things have Class-D amplifiers with a decent efficiency.

author: Jwalling
author_rank: Unknown
timestamp: September 10, 2016, 05:47:04 pm
content: Screw it. This thing was really annoying me, and besides, people are calling me me an "old duddy"Can't have that.So the "brain" in this thing runs off a little 8 bit micro, a Sonix SN8P2608http://www.kodec.com/sn8p_tool/datasheet/SN8P2608_V15_EN.pdfThe timeout must be software controlled, so we can blame the guy that wrote the firmware. It's always the software guy!and it has an ST TDA7377 power amp.https://tibounise.com/misc/TDA7377.pdfI traced the circuit back to the power transistor that controls pin 7 standby on the amp as well as controlling power to it. Rather than tracing it further to the micro, I put a blob of solder on it from emitter to collector (circled in red). Problem solved.

author: Cyberdragon
author_rank: Super Contributor
timestamp: September 11, 2016, 04:42:39 pm
content: Quote from: Jwalling on September 10, 2016, 05:47:04 pmAnother victory in the war against