my dvd denon 2900 mod dazzz style :)

[dazzz]

Until I invites the the Additional
Voltage Regulators lm2940


I've change
Voltage regulator voltage 5 +
LM7805
To the DAC
I added a input filter capacitor 0.1UF
VISHAY 1837

The Output Filter capacitor
I changed
From 22UF
To
1000UF of
RUBYCON - ZLK 1000uf 25v


The Small protection diode that prevents
Return Voltage
I changed
because I raised the value of the capacitor significantly

to diode to-220 (fred)

(i solder her under the audio circuit Along with the input capacitor )

 

[ulubiony]

w zasilaczu denona " padl" - TR 906 - jakim go zastapic ???

 

[planet10]

in the power supply Denon "fell down" - TR 906 - what to replace it?

English please.

dave

 

[ulubiony]

in denon 2900 power supply -death -finish -TR 906- !!!....changed to ???

 

[ulubiony]

denon

tr 906 = dtc 114eka

 

[Mooly]

tr 906 = dtc 114eka

These are pre biased transistors but you can easily make one. Use a small signal NPN type and add two resistors (both 47k) as shown.

 

[ulubiony]

/What/ resistors next to capitors C 234 470uF + leg, DENON 2900 ?

 

[ulubiony]

How many ohm is in R 297 /smd / -Denon 2900 ???

 

[ulubiony]

denon 2900

How many ohm is in R297/smd/ Denon DVD
2900 ???

 

[fredeb]

How many ohm is in R297/smd/ Denon DVD
2900 ???

Look here : http://www.diyaudio.com/forums/digital-source/242657-my-dvd-denon-2900-mod-dazzz-style-2.html#post3711571

 

[dazzz]

I added a new upgrade to Denon 2900
I changed the voltage regulators LM7805
5V
Providing voltage to the PCM1790
to A circuit built up based on the the new reg of LinearTechnology LM3088

Works perfectly and is certainly an improvement in some parameters
Such as cleaning and dynamics

 

[dazzz]

The power supply has been a major upgrade
i built Voltage Regulators for all the voltage in the 2900

+5 v audio bored lLT3088
+3.3 audio bored lLT3088

in the psu
+9v LT1965
-9v LT3091
+3.3v LT3081

All voltage regulators carefully planned
And I added in some (lt3081) soft start circuit
Current Limiting (lt3091)
Etc. etc.

 

[dazzz]

more photo

 

[dazzz]

more photo

 

[dazzz]

Test Cats

https://vimeo.com/177416972

 

[dazzz]

A few changes to the audio circuit

 

[MIKEVO]

I have my Denon DVD-2900 and love it.

I use the on board DAC as the SACD won't stream via Toslink (CD only)

What are the best mods for sonic improvement?

 

[fredeb]

Wow Dazz ! By now I think you could easily build your own disk player .

Lucky cats . 🙂

 

[dazzz]

I have my Denon DVD-2900 and love it.

I use the on board DAC as the SACD won't stream via Toslink (CD only)

What are the best mods for sonic improvement?

Remove the op amp sig filter
IC218
IC219

remove the mute transistor

i/v op amp lm4562

comparator op amp / buffer -op amp
ad826
or
lt1364

And the most important is the power supply
i Designed for all voltage
Linear Voltage Regulators

In my experience the best
LT3088
LT3091
LT3081

Look for the thread opening in parts
On the LT3088
I've posted a lot of voltage regulators I designed

 

[dazzz]

Wow Dazz ! By now I think you could easily build your own disk player .

Lucky cats . 🙂

thanks fredeb
the cat name is Steve Vai jr