Upgrading & modding new Oppos, BDP-93 & BDP-95 - Page 24 - diyAudio
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Old 19th September 2012, 08:03 AM   #231
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Hi Cortis, I know absolutely nothing about this Oppo as our DAC sounds better than the original outputs I never bothered to check the innards.

Don't feel bad about my comments. I just like electronics to function good, also look good and to have good soldering joints.

It makes me wonder why the design choices you describe were made by the Oppo engineers ?!? This player just asks for modifications. I now see you placed the XO very close to the ES9018.
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Last edited by jean-paul; 19th September 2012 at 08:11 AM.
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Old 19th September 2012, 08:05 AM   #232
Coris is offline Coris  Norway
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By the way...
Oppo will quite soon come out with a new version of this player: BDP105.
I`m just curious if somebody who have been in to this thread is planing to buy that Oppo BDP105. It will be very interesting to have some pictures of the boards inside the new machine, to make us a judgement about what were improved and what may not be as it should...
So, if somebody will buy it (maybe in the end of this year) than will make us very happy to show/post it some detailed pictures of the inside of the machine.
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Old 19th September 2012, 08:07 AM   #233
Coris is offline Coris  Norway
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Quote:
Originally Posted by jean-paul View Post
Hi Cortis, I know absolutely nothing about this Oppo as our DAC sounds better than the original outputs I never bothered to check the innards.

Don't feel bad about my comments. I just like electronics to function good, also look good and to have good soldering joints.
I do not feel bad... I`m fine. Is good to have a little "action" in this thread...

Last edited by Coris; 19th September 2012 at 08:16 AM.
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Old 19th September 2012, 12:22 PM   #234
marce is offline marce  United Kingdom
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To the few who have accused us as arguing etc, may I just say that while DIY should be fun, it is also a forum for learning, if you think that people with experience in real world design of products giving you advice is arguing then so be it.
If you had to EMC test your designs you would soon learn (as stated before)in todays RF saturated envoironment point to point wiring is not that good, unless you want to pick up noise.
As I have stated to Coris, I have meant him no offence.
As to the rest enjoy your myths and fantasies I am out of here but with one last little set of info that you may wanna learn dipoles:

http://www.hottconsultants.com/pdf_files/dipoles-1.pdf
http://www.hottconsultants.com/pdf_files/dipoles-2.PDF
http://www.hottconsultants.com/pdf_files/dipoles-3.PDF
You may be surprised what has to be learned these days with todays modern devices, 1/20th wavelength of 125MHz is 6cm, look at the rise time and you will get the spectural content, which will be high, using the maths you can see how easily even a tiny bit of wire can become a reciever or a transmitter.
Have Fun
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Old 19th September 2012, 12:33 PM   #235
Coris is offline Coris  Norway
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I personally did not considered this (hot) discussion as arguing...
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Old 19th September 2012, 12:45 PM   #236
marce is offline marce  United Kingdom
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I know, others did. If they placed the clock on the board like you said it is bad practice, the main cause of clock signal degradence is distance.
Take care and have fun anyway Coris.
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Old 2nd October 2012, 08:25 PM   #237
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Hi all,

I've got a modded Oppo you can see here below.

Click the image to open in full size.

The master clock (25 MHz) has been replaced by a NewClassD NewClassD Neutron Star)

Someone told be today there are 3 clocks in a Oppo player (20 Mhz, 25 MHz (masterclock) and 27MHz).

Q: Can you please tell me what is the area of work of each clock ?

I plan to replace the analog card with a digital (spdif) one.

Vanity Lite :
Vanity 93 : http://audiopraise.com/vanity93/overview.php

I ordered Lite version thinking there is no benefict having S/PDIF reclocking (I suposed the NewClassD master clock does it better).

BUT someone told me it's the 20 MHz clock which is responsible of toslink/coax outputs.

Can you please clarify things ?
I wanted to know if the Vanity Lite should be fine for my needs or if I should take the Vanity 93.

Thanks a lot.
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Old 5th October 2012, 09:11 AM   #238
Coris is offline Coris  Norway
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Adhara

I`m not very sure about the arrangement of those clocks in BDP93, but it may be similar to BDP95 (which I know best).

This is what I know for now:
Master clock 25Mhz oscillator is placed near to the main processor on the upper side of the motherboard. Improving this clock have the main impact for both audio and video stages improvement. Is there where your NewClassD clock is connected.
The 27Mhz oscillator is placed quite near main processor area, but on the lower/under side of the motherboard. This clock is involved in the video processing circuitry inside the main processor. For sure is a part of the HDMI output stage of this processor.
The 20Mhz oscillator is clocking the Marvel QDEO (video) processor. It seems to me that this 20Mhz oscillator have nothing to do with the SPDIF output. This is (may be) the job of the main processor I suppose.

About modifications on BDP93 I have a comment.
This player`s price is about 500$. With modifications made only for audio stage (SPDIF) improvements the final price become more than 1000$. One can well buy an BDP95 for this price... This last player have much better audio (analogue dedicated) stage and is a class up than BDP93...
For those who still think to modify their BDP93 or even BDP95 I will suggest to wait until Oppo will come out (quite soon) with their new models of those players (103/105).
It seems that those new models will include some of the modifications suggested in DIY world, and some others improvements. The price it seems to be too not very different than the old models...
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Old 5th October 2012, 11:55 AM   #239
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Quote:
Originally Posted by Coris View Post
Adhara

I`m not very sure about the arrangement of those clocks in BDP93, but it may be similar to BDP95 (which I know best).
No difference. Except where the ribbon connects to audio/DAC daughterboard, it is functionally the same. The daughterboard uses CS4382 DAC and has no clock of its own, which is referenced to the Master Clock, 25MHz.

The NuForce daughterboard has a second clock for it's DAC - but have no details other than that.

Cheers, Joe R.
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Old 5th October 2012, 02:06 PM   #240
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Thanks a lot guys !!
So the lite version of the Vanity board is what I need as the master clock has already been improved.
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