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Class D Switching Power Amplifiers and Power D/A conversion

I AM D v200, Fx Audio d802, optimisation and TPA3116
I AM D v200, Fx Audio d802, optimisation and TPA3116
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Old 11th October 2015, 09:45 PM   #11
mikey_audiogeek is offline mikey_audiogeek  New Zealand
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Join Date: Sep 2004
Location: Northland, New Zealand
Yes - it sounds better to me. My V110 amplifier with clock sounds better than my V200 without clock.

Although this could be because V110 uses TAS5614A and V200 uses TAS5614LA...

(distortion specs for TAS5614A are better than TAS5614LA)
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Old 13th October 2015, 03:01 AM   #12
mikey_audiogeek is offline mikey_audiogeek  New Zealand
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Quote:
Originally Posted by MyNaim View Post
Sorry it's a SPDIF input as you'd probably guessed.

Actually there is an I2S input that you can use in using the aux input

I AM D v200, Fx Audio d802, optimisation and TPA3116


So you can either use the I2S input with an I2S device or create a new and improved SPDIF input with a card like this

AK4113 Digital receiver board SPDIF to I2S converter softwear control LCD new -in LCD Modules from Electronic Components & Supplies on Aliexpress.com | Alibaba Group


Cheers

Oli
Hi Oli,

Is there also an I2S input on connector P23? This is right next to TAS5548.

It seems as though this is the I2S from the CM6631, related to the SPDIF input.

Cheers,
Mike
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Old 13th October 2015, 10:46 PM   #13
mikey_audiogeek is offline mikey_audiogeek  New Zealand
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Can you access the French forum? I can't, only cached pages. Is the website offline or is the problem at my end?

Cheers,
Mike
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Old 14th October 2015, 06:09 PM   #14
nusma is offline nusma  France
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Join Date: Apr 2013
Location: toulouse, france
Hi, the site is currently offline since saturday... The problem is general, no one can access now.
(i am following these threads on forum-audiophile also and bought the MCR-510, Marantz).

Manu
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Old 14th October 2015, 10:12 PM   #15
mikey_audiogeek is offline mikey_audiogeek  New Zealand
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Thanks Manu, hope they get the site back up soon!

Cheers,
Mike
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Old 16th October 2015, 01:10 PM   #16
ferment is offline ferment  Australia
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G,day,
Got my first fx-audio d802 back in June. At the time I was looking at a basic amp that had a digital input and a remote to set up some music for the BBQ area. When it turned up I hooked it up to a set of old speakers to see what it was like. I wasn't expecting too much, my previous although limited experience with class d wasn't mind blowing. This was surprising. It wasn't long before it was hooked up to my mains and it wasn't long after that my valve amp went into semi retirement. These little things really are amazing! I've since bought another 2.
And yes I discovered that French site whilst trying to find out if anyone else had discovered these beauties.

regards
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Old 19th October 2015, 08:16 PM   #17
mikey_audiogeek is offline mikey_audiogeek  New Zealand
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Russian blog on modifying the V200.3 and V200.5 amps: ???????? ģ Blog Archive ????? Digital Amplifier v200.3
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Old 20th October 2015, 08:04 PM   #18
2600Hz is offline 2600Hz
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Hi Mike,

Have you tried the two capacitors on C3/C13 ?
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Old 20th October 2015, 08:27 PM   #19
2600Hz is offline 2600Hz
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Join Date: Sep 2009
Also, did you managed to find out a second I2S input ?
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Old 20th October 2015, 10:53 PM   #20
mikey_audiogeek is offline mikey_audiogeek  New Zealand
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Quote:
Originally Posted by MyNaim View Post
Also, did you managed to find out a second I2S input ?
Yup running the C3/C13 cap mod. 10uF OSCONs.

Also now running a Twisted Pear Trident regulator on the AVCC supply to the TAS5548. Nice mod.

I believe there's an I2S input on P23, can't confirm yet. I haven't tested I2S input at all yet, been working on the car instead...

Long weekend coming up so I hope to post some progress!

Cheers,
Mike
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