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Old 22nd February 2009, 12:59 AM   #1
sendler is offline sendler  United States
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Default 3875 sounds better, 3886 measures better?

It's interesting that the majority of those that have tried both chips report that the 3875 sounds better even though the 3886 seems to measure better.
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Old 22nd February 2009, 03:52 AM   #2
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Thumbs up LM3875!

Yeah! I have try both and I like the sound of LM3875 better.
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Old 22nd February 2009, 06:49 AM   #3
Puffin is offline Puffin  United Kingdom
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Me too
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Old 24th February 2009, 03:42 AM   #4
Leolabs is offline Leolabs  Malaysia
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If you are lazy with tweakings,use LM3886;if you are addicted with tweakings,use LM3875.
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Old 24th February 2009, 04:43 AM   #5
sangram is offline sangram  India
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I'm addicted to tweaking and I use the 3886. Never tried the 3875, I stayed with the higher power chip (bought 10 of them and still have 4 to go).

This little amp walks all over a lot of commercial offerings in the under $1000 bracket, lots of control, punch and not sounding sterile. Only two defects being the lack of inner detail and that it runs out of steam with low sensitivity or high current speakers. Implementation matters a lot in the final sound, and the change of a single element in the power supply or signal path has fairly dramatic effects.

I would try the 3875, but I have two pair of speakers - Dynaudio BM6 (86 dB/W, 4 ohms, nasty load) and Usher Mini Dancer (85 dB/W, 8 ohms). I need much more power than either of the chips can give me anyway, so going discrete for sure.
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Old 24th February 2009, 04:49 AM   #6
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Default Re: 3875 sounds better, 3886 measures better?

Quote:
Originally posted by sendler
seems to measure better.
All that does is tell us that it measures better (at least the limited measures we ever see)

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Old 24th February 2009, 04:55 AM   #7
ttan98 is offline ttan98  Australia
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Quote:
Originally posted by sangram
.......more power ........

Similar to Captain Kurt asking Scottie from Star Trek, give me more power!

Jokes aside you should seriously consider building a pair of high efficiency speakers say >90 dB minimun, better still 95dB or more.

I find LM3875 has better clarity than LM3886.
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Old 24th February 2009, 05:13 AM   #8
sangram is offline sangram  India
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No more speakers please, I spent >4000 dollars already on these. Also have a set of drivers and crossovers for Zaph L18, not got built for the last three years as no woodworker is willing to tackle the project, and no room in my small apartment to build it myself

I'd rather have a proper amp now.
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Old 24th February 2009, 05:18 AM   #9
ttan98 is offline ttan98  Australia
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Quote:
Originally posted by sangram
No more speakers please, I spent >4000 dollars already on these. Also have a set of drivers and crossovers for Zaph L18, not got built for the last three years as no woodworker is willing to tackle the project, and no room in my small apartment to build it myself

I'd rather have a proper amp now.

Then parallel 3*LM3886 and you get 150 watts, go to Ebay you can buy them cheap.

$4000 for the speakers you have are expensive really, there are ready made DIY speakers kits which sound as good for much cheaper.
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Old 24th February 2009, 06:30 AM   #10
sangram is offline sangram  India
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[OT]

Already have parallel LM3886, BPA 4780 (200 w/ch) and single-ended 3886. Really need something with a little more finesse. >1 chips sounds not as good as single chip already, and to get decent voltage output a high voltage amp is a better bet anyway.

I already have all the chips I need, as well as transformers. Just tired of chips and want to taste something different. We have difficulties in getting a woodworker for DIY cabinets - not that I haven't tried. Like I said, there's a full set of the L18 drivers and crossovers in my parts bin, waiting for a cabinet maker.

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