Yamaha RXV 463 DSP and DAC chip

[lakshmant]

Can any of the members highlight what DSP chip and DAC's are used in the RXV 463 receiver from Yamaha.

any info would be greatly appreciated.

 

[Lordoftherings]

Yamaha own 32-bit DSP LSI chip & BB PCM-1680 single Dac for all 8 channels.

Hi Lakshmant & Welcome to Audioholics Forums.

Yamaha RX-V463 A/V Receiver:
Well, the DSP chip is Yamaha own proprietary DSP: a 32-bit Cinema DSP LSI.
It's a 32-bit floating point DSP chip, homemade by Yamaha.
I don't know the exact serial number.

And the Dac used in the RX-V463, is the Burr-Brown PCM-1680, an 8-channel single Dac with 28 pins. This single BB Dac is used for all 8 channels.
The Dac itself is spec at 105db dynamic range and 105db for SNR with a low THD+N of 0.002%, and Yamaha own implementation yield a dynamic range of 100db.

* Here: http://focus.ti.com/docs/prod/folders/print/pcm1680.html

Bob

 

[Seth=L]

Hi Lakshmant & Welcome to Audioholics Forums.

Yamaha RX-V463 A/V Receiver:
Well, the DSP chip is Yamaha own proprietary DSP: a 32-bit Cinema DSP LSI.
It's a 32-bit floating point DSP chip, homemade by Yamaha.
I don't know the exact serial number.

And the Dac used in the RX-V463, is the Burr-Brown PCM-1680, an 8-channel single Dac with 28 pins. This single BB Dac is used for all 8 channels.
The Dac itself is spec at 105db dynamic range and 105db for SNR with a low THD+N of 0.002%, and Yamaha own implementation yield a dynamic range of 100db.

* Here: http://focus.ti.com/docs/prod/folders/print/pcm1680.html

Bob

What about the RX-V3800?

 

[Lordoftherings]

What about the RX-V3800?

Do you really want to know? Or do you already?

But if you insist.

The Yamaha RX-V3800 uses Yamaha own proprietary DSP chip: a high performance DSP LSI chip with 32-bit floating point quantization, called Cinema DSP 3D. In conjunction with this DSP chip, it uses also a RAM.
And with the additional Decoder chip, another RAM is used in combination.

It also uses four (4) TI (formely Burr-Brown) DSD-1791 Dacs (these are Stereo Dacs) for all 8 channels. And of course these are 192khz/24-bit Dacs.

* Here: http://focus.ti.com/docs/prod/folders/print/dsd1791.html

Just in case you didn't know.

 

[Seth=L]

Do you really want to know? Or do you already?

But if you insist.

The Yamaha RX-V3800 uses Yamaha own proprietary DSP chip: a high performance DSP LSI chip with 32-bit floating point quantization, called Cinema DSP 3D. In conjunction with this DSP chip, it uses also a RAM.
And with the additional Decoder chip, another RAM is used in combination.

It also uses four (4) TI (formely Burr-Brown) DSD-1791 Dacs (these are Stereo Dacs) for all 8 channels. And of course these are 192khz/24-bit Dacs.

* Here: http://focus.ti.com/docs/prod/folders/print/dsd1791.html

Just in case you didn't know.

I really did not know. Thanks.

How do those DACs stack up to other DACs? Aren't all Yamaha receivers equipped with Yamaha designed/manufactured DSP chipsets?

 

[Lordoftherings]

Dacs & DSPs on Yamaha Receivers.

I really did not know. Thanks.

How do those DACs stack up to other DACs? Aren't all Yamaha receivers equipped with Yamaha designed/manufactured DSP chipsets?

Hi Seth,

I thought that you would know that Seth.

The TI BB PCM-1791a or DSD-1791 Dac (same), is the third one from the top, right after the PCM-1796a (or DSD-1796), which is the second one from the top, right after the PCM-1792a (or DSD-1792), which is at the very top.

The 1791 is used in many receivers from Denon and Yamaha. It compares fine with other brand of Dacs from other manufacturers, like Cirrus Logic Crystal Dacs and Wolfson Dacs. These are pretty much the three big ones, used the most often in all our receivers. There are also the AKM Dacs, but nowadays, it seems to be used less often.

And as for Yamaha own proprietary DSP LSI chips, they are in fact used in all their own receivers to the best of my knowledge.
Unless they used the Analog Devices Sharc DSP chip decoder on some of their THX models, but I doubt it.

And of course, the higher you go in the line (like any other manufacturer), the better the Dacs and the more DSP chips they used.

I can tell you pretty much what Dac(s) and what DSP chip(s), and how many of them are used (both Dacs & DSP chips) in all the Receivers on the market right now and previous models too, but that will take me quite a long list to enumerate here.
Please, spare me.

Dacs are a special type of knowledge that I developed a long time ago.
You can call it a special section of my passion. But it is a crontroversial subject among audiophiles, because of their different implementation and the other parts that form the sum.

If you have more question(s), don't hesitate. And I can also give you some interesting links too (there are so many of them).

Regards,

Bob

P.S. Gene is very knowledgeable too about Dacs and their implementation from various manufacturers, but in particular with Denon.

 

[lakshmant]

Just as i was guessing and looking up the SNR specs of the RXV 463 model and zeroed in on the PCM 1680 DAC from Burr Brown.

I think the model of DSP they use based on what you have shared is the YSS-918 or YSS-938 i have been reading too many Yamaha product leaflets recently. Their Implementation of dts codec is extremely good in this DSP, way better than the TI aureus implementation in my Onkyo SR504. It stacks up with the bigger onkyo amps in terms of surround decoding accuracy.

Any opinions on the sound quality?

 

[Lordoftherings]

Ouf!

Just as i was guessing and looking up the SNR specs of the RXV 463 model and zeroed in on the PCM 1680 DAC from Burr Brown.

I think the model of DSP they use based on what you have shared is the YSS-918 or YSS-938 i have been reading too many Yamaha product leaflets recently. Their Implementation of dts codec is extremely good in this DSP, way better than the TI aureus implementation in my Onkyo SR504. It stacks up with the bigger onkyo amps in terms of surround decoding accuracy.

Any opinions on the sound quality?

Hi Lakshmant, and Welcome to Audioholics HT Forums.

The DSP LSI chip used in the RX-V463 is not the YSS-918, and is also probably mot the YSS-938. Could it be the YSS-948, probably not, or is it?
So, which YSS model number is it? Who really cares, it's only a model number, which would be higher than 948 (or perhaps it is the YSS-948).

Now, which DSP chip sounds the best? Is it the Yamaha New Cinema DSP HD3, or the newest Texas Instruments TI Aureus TMS 320 DAC 710 DSP chip, or is it the latest Analog Devices HammerHead Sharc 21367 DSP chip?
These three DSP chips are all 32-bit floating point quantization system LSI.

My personal opinion on the sound quality of the Yamaha, versus the other ones from Denon and Onkyo? And with their own implementation? And depending of the model, they can use only one, or two, or three, or four, or even more DSP chips.
So, where that leave us?... Pretty much nowhere.

I can tell you a lot about each individual DSP model number from each manufacturer, but it will take me a very long thread just for this.

There are so many variables, different features, different implementations..., that it will take forever to analyse which one could possibly, remotely sound better than the next other one. And about the last year DSP model #, and the next year one?

Might is well just forget about it.

Cheers,

Bob