Wadia WT-3200

QUOTE (dingus @ December 01, 2007 12:55 am)

QUOTE (clint e. @ November 30, 2007 01:13 pm)

...I was talking with a friend of mine in Madrid this week and he told me that he knows a guy who have made some tweaks in CDM1 digital decoder. I told him that i was interessed about it and he's gonna phone me this weekend to gimme the exact tweak to do in CDM's transports.

cool, looking forward to that Alvaro.

Well i got an e-mail from him about it.

The tweak was made in the Rotel 855 CD player, which EAD began work as its first modification project, and have the same chipet has your Wadia : SAA7210.

Tweak:
Change the value in the RC filter cct at pin 22 (phase detector/oscillator control) of the SAA7210 chip. This 7210 is basically a decoder precedes the SAA7220 together with TDA 1541A chipset, it incorporates the demodulator and subcoding processor and error corrector in one chip.

the values ,
- 39 ohms to 20 ohms,
- 2.2 uF to 22 uF
- add bypass cap of 2.2uF.

sound ? ( In his own words)
immediate effect ! big change ! it's like 'removing a curtain' infront of the speakers, the highs/details suddenly just appeared. Better mod as compared with low jitter clock....

This is definitely a worthwhile tweak which only cost less than 50 cents, 5 mins of work but with big change on the sound !

Tanx to my friend Miguel Ordoñez. user posted image

QUOTE (clint e. @ December 02, 2007 07:53 am)

QUOTE (Mark B @ December 02, 2007 02:55 am)

QUOTE (Elroy)

BTW, I was completely blown away at how good scott's system sounded, the differences from the last time I listened and then again yesterday, was incomparable, just lush, warm, smooth, tight, refined, all the big, good words I can come up with, anyway enough of me babbling, im not much of a writer, or audioafficianado.

I think a Yamaha B-2x might have something to do with that.

Sorry, but i do not concur with you on this.
Of course the B-2x is one of the best power amps ever build, but because of that it "only" amplifies what you gives to him.
If you gives him trash it amplifies trash, if you gives him a good sign - as the case here- he amplifies that good sign.
The B-2x works in class A with great power, resolution and transparancy...though, if there was any little differencies in the audio signal - between the Wadia and the Kenwood - he certanly shows them with great detail.

Of course the entire system is crucial to the final sound as Elroy points out. I certainly don't claim that the amp should receive all of the credit. However, the amp is crucial to controlling the drivers, and supplying the current needed when the music demands it.

QUOTE (Mark B @ December 02, 2007 08:10 pm)

QUOTE (clint e. @ December 02, 2007 07:53 am)

QUOTE (Mark B @ December 02, 2007 02:55 am)

QUOTE (Elroy)

BTW, I was completely blown away at how good scott's system sounded, the differences from the last time I listened and then again yesterday, was incomparable, just lush, warm, smooth, tight, refined, all the big, good words I can come up with, anyway enough of me babbling, im not much of a writer, or audioafficianado.

I think a Yamaha B-2x might have something to do with that.

Sorry, but i do not concur with you on this.
Of course the B-2x is one of the best power amps ever build, but because of that it "only" amplifies what you gives to him.
If you gives him trash it amplifies trash, if you gives him a good sign - as the case here- he amplifies that good sign.
The B-2x works in class A with great power, resolution and transparancy...though, if there was any little differencies in the audio signal - between the Wadia and the Kenwood - he certanly shows them with great detail.

Of course the entire system is crucial to the final sound as Elroy points out. I certainly don't claim that the amp should receive all of the credit. However, the amp is crucial to controlling the drivers, and supplying the current needed when the music demands it.

Of course.

The job of the amplifier is "very simple". It must multiply the incoming signal voltage by a factor of about 20, and deliver a perfect replica of the signal to the speaker, independent of the impedance that the speaker presents to it. It is not the job of the amplifier to modify or "improve" the sound in any way. The name of the game is accuracy in combination with adequate power and absence of misbehavior.

QUOTE (clint e. @ December 02, 2007 09:26 am)

....

The tweak was made in the Rotel 855 CD player, which EAD began work as its first modification project, and have the same chipet has your Wadia : SAA7210.

Tweak:
Change the value in the RC filter cct at pin 22 (phase detector/oscillator control) of the SAA7210 chip. This 7210 is basically a decoder precedes the SAA7220 together with TDA 1541A chipset, it incorporates the demodulator and subcoding processor and error corrector in one chip.

the values ,
- 39 ohms to 20 ohms,
- 2.2 uF to 22 uF
- add bypass cap of 2.2uF.

sound ? ( In his own words)
immediate effect ! big change ! it's like 'removing a curtain' infront of the speakers, the highs/details suddenly just appeared. Better mod as compared with low jitter clock....

This is definitely a worthwhile tweak which only cost less than 50 cents, 5 mins of work but with big change on the sound !

Tanx to my friend Miguel Ordoñez. user posted image

thanks Alvaro! i'm too chicken to try it for myself, but if i can find someone capable who will do it, i'll get it done.

You're always welcome amigo.

Send a pm with your adress and i'll send you a good power chord to your Wadia.
I know you don't believe in the benefits of a good power chord - i mean, cable

, anyway... i'll send it to you the same. Then you can judge it for yourself.