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Old 24th May 2018, 12:48 PM   #3161
ukhopeful is offline ukhopeful  United Kingdom
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Default Pre and power amp build

My first build and first attempt at SMD!

I used amp boards from Tom Christiansen (Neurochrome.com)

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Old 24th May 2018, 10:00 PM   #3162
troystg is offline troystg  United States
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I'm sure that sounds fantastic!

Is that a soft start in front of the smps in the amp? (Front circuit wise)
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Old 25th May 2018, 07:27 AM   #3163
ukhopeful is offline ukhopeful  United Kingdom
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Quote:
Originally Posted by troystg View Post
Is that a soft start in front of the smps in the amp? (Front circuit wise)
No, it's one of these
ON-OFF modul

There's one in the preamp too. In the preamp it's used to control the volume pot motor and IR remote control. In the power amp it's just used to receive a trigger signal from the preamp board so that I can power both amps from the switch (or remote) on the preamp.
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Old 27th May 2018, 04:04 PM   #3164
Cowmans is offline Cowmans  Belgium
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Beautiful build! Modushop enclosures?
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Old 30th May 2018, 08:04 AM   #3165
ukhopeful is offline ukhopeful  United Kingdom
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Beautiful build! Modushop enclosures?
Thanks. Yes, a SlimLine and a Dissipante. I sent the panels to Schaeffer for processing.
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Old 5th June 2018, 02:08 PM   #3166
NealJ is offline NealJ  United Kingdom
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This is my LM3886. I just started with electronics this year. I've made a couple of CMoy headphone amps, the O2 headphone amp and the ACA. I love how you can go from no knowledge whatsover to building an amp you're proud of, and enjoy listening to, in a short period of time by using this site and others.


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Old 5th June 2018, 02:18 PM   #3167
willsw is offline willsw  United States
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Quote:
Originally Posted by NealJ View Post
This is my LM3886. I just started with electronics this year. I've made a couple of CMoy headphone amps, the O2 headphone amp and the ACA. I love how you can go from no knowledge whatsover to building an amp you're proud of, and enjoy listening to, in a short period of time by using this site and others.
Nice build as one of your first. You'll never have to worry about heat dissipation with that case.

I would route the output wire around the sides of the transformer. A toroidal transformer is noisiest above and below.
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Old 5th June 2018, 02:44 PM   #3168
NealJ is offline NealJ  United Kingdom
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Thanks, I realise the heatsinks are over the top but I like the look and it fitted perfectly in my rack.
I didn't realise transformers had a direction to their noise, thanks for the tip.
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Old 5th June 2018, 08:47 PM   #3169
Reddo is offline Reddo  Netherlands
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My first (and finished) LM3886 build, using 2 x Modulus 86 and power 86 from Neurochrome in a dissipante chassis with 300 VA transformer, Allo stepped attenuator and a Lorlin input selector.

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Old 5th June 2018, 10:14 PM   #3170
mhouston is offline mhouston  Australia
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Pro looking build.
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