diyAudio - dvb projekt

First Watt F5 Amp finished

Posted 19th February 2012 at 12:42 PM by dvb projekt
Updated 16th May 2016 at 01:58 AM by dvb projekt (Hifi-Tuning Supreme 3 fuse photo added)

My F5 is ready to burn in

The postman delivered today the last small part for perfection...

The Hifi-Tuning Supreme 3 fuse

dvb projekt

diyAudio Member

Posted in First Watt F5, Project builds

Views 4626 Comments 11 dvb projekt is offline

NOS TDA1541A double crown

Posted 27th January 2012 at 05:54 PM by dvb projekt
Updated 30th November 2016 at 09:23 AM by dvb projekt

I am a lucky man!

I´ve got two NOS TDA1541A double crown DAC´s from a friend

He bought the last from Philips a long time ago...

Just now i swapped them on my Red Baron modules...

What could i say.... They will never leaving the DAC modules again !!!

dvb projekt

diyAudio Member

Posted in Project builds, Reference TDA1541A DAC

Views 4046 Comments 5 dvb projekt is offline

First Watt F5 Amp build

Posted 27th January 2012 at 02:53 PM by dvb projekt
Updated 13th November 2015 at 10:32 AM by dvb projekt (New photo source)

After reading so much over this amp, i will start a new project for my Hornspeaker

Let´s see if the F5 can play in the same league as my 300B mono´s

The parts

Schaffner FN 2070 - 3A multistage EMI Filter

Antek AS-4218 - 400VA transformer

SST03 Softstart module from Sjostrom Audio
Design without extra transformer

RFB03 rectifier bridge from Sjostrom Audio

with IXYS DPG 60 C 200 HB
...

Attached Files

Front- & Backpanel .fpd files.zip (4.2 KB, 185 views)

dvb projekt

diyAudio Member

Posted in First Watt F5, Project builds

Views 15350 Comments 15 dvb projekt is offline

Tube Rectifier Comparison with SSHV in between

Posted 16th September 2011 at 12:14 PM by dvb projekt
Updated 30th November 2016 at 09:25 AM by dvb projekt

Vin= SSHV input / Vout= SSHV output

Because i am on vacation, i had the time to listen to two other tube rectifier i have.

The question, if there are still differences in sound with different tube rectifiers and the SSHV in between, is

YES !!!

Till now i used the Bendix 6101, a very nice sweet and soft sounding rectifier.

After i roll to the SED Winged "C" 5U3C (5U4-G) Black Plate rectifier,

...someone lift a invisible curtain...

Much more precision in the mids and highs and the soundstage open up in all directions.
Jesus, in comparison the Bendix sounds much to soft!

The Mullard GZ37/CV378 Coke Bottle has also the qualities of the 5UC3 Black Plate,
but is a bit softer sounding.

The only disadvantage of

...

dvb projekt

diyAudio Member

Posted in Project builds, Reference TDA1541A DAC

Views 3122 Comments 6 dvb projekt is offline

Best source for TX2575 Naked Z-Foil Resistor

Posted 28th August 2011 at 07:52 AM by dvb projekt
Updated 28th July 2014 at 10:12 AM by dvb projekt

All members who want to use the "holy grail" audio resistor,

the TX2575 Naked Z-Foil,

could order it direct at Texas Components.

That´s the cheapest way to get it IMO.

They have also great Trimpots with Bulk Metal Foil Technologie.

P.S.: If you send a mail to Arbie, send her regards from me!

Attached Files

5 Reasons to Specify Bulk Metal Foil Pots.pdf (800.9 KB, 1174 views)

dvb projekt

diyAudio Member

Posted in Project builds, Reference TDA1541A DAC

Views 5613 Comments 2 dvb projekt is offline

TDA1541A DAC Module V3.0 - Out of production

Posted 20th August 2011 at 08:32 AM by dvb projekt
Updated 30th November 2016 at 10:25 AM by dvb projekt

The Red Baron

aka TDA1541A DAC V3.0

The evolution brings the following changes

- Direct shunt voltage inputs with shortest onboard traces
- I2S In-/Outputs with shortest onboard traces
- Upgrades DEM Synchronizer
- Onboard Grounded-Gate MOSFET Current Buffer I/V Stage
(-ecdesigns- MK7 version)
- Compacter design

Still on the module

- Separate GND-Trace for DEM-Synchroinizer
- Master/Slave connectors for parallel DAC module usage
and external I/V Buffer stages e.g.
Tube-I-zator & DDNF Stage
- Groundplane
- no SMD Design

The PCB has the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 125x73 mm

...

Attached Files

	TDA1541A Project - BOM - for The Red Baron.zip (9.0 KB, 1466 views)
	The Red Baron DAC.pdf (28.9 KB, 2503 views)

dvb projekt

diyAudio Member

Posted in Discontinued Modules

Views 5958 Comments 0 dvb projekt is offline

Transformer for Pedja Rogic´s DDNF I/V Stage

Posted 23rd May 2011 at 10:44 AM by dvb projekt
Updated 14th June 2013 at 09:47 AM by dvb projekt

If you would build the DDNF I/V stage with my PSU & Salas Shunt modules,
you could order a custom made transformer at
AE-Europe.

It has the following data:

Primary:

115-0 / 115-0
(for 115V & 230V usage)

Secondary:

24V-0-24V / 2A
24V-0 / 2A
Magnetic Shield

You could order two versions:

- Standard: EI-core € 64,-

- High End: C-core (same size as 30317) € 112,-

Prices are excl. shipping and VAT
Delivery time around 6 weeks after order.

dvb projekt

diyAudio Member

Posted in Discontinued Modules

Views 2505 Comments 5 dvb projekt is offline

Pedja Rogic´s Discrete Diamond Non-Feedback I/V Stage - Out of production

Posted 17th May 2011 at 04:15 PM by dvb projekt
Updated 14th June 2013 at 09:46 AM by dvb projekt

For all of you who want an alternative non-tube I/V stage,
Pedja Rogic was so kind and permit me to make a pcb with his circuit.

To get a smaller pcb, i made two connectors for the needed big 10µF caps.

The PCB will have the following data:

Material: FR4 - 2mm
Layers: 2
Board size: 110x95 mm
Surface finish: Immersion Gold
Copper weight: 70µm
Soldermask: Both sides - green
Silkscreen: Legend on top

Out of production

Attached Files

	Pedja Rogic DDNF IV Stage.pdf (71.0 KB, 4826 views)
	Pedja Rogic´s DDNF IV Stage BOM.zip (4.9 KB, 550 views)

dvb projekt

diyAudio Member

Posted in Discontinued Modules

Views 4408 Comments 5 dvb projekt is offline

Digital Input Modules Power & Signal Schematic

Posted 8th May 2011 at 04:48 PM by dvb projekt
Updated 30th November 2016 at 09:28 AM by dvb projekt

On request the section of my digital input modules

dvb projekt

diyAudio Member

Posted in Project builds, Reference TDA1541A DAC

Views 2210 Comments 3 dvb projekt is offline

External PSU finished

Posted 2nd May 2011 at 07:02 PM by dvb projekt
Updated 30th November 2016 at 09:46 AM by dvb projekt

After a long weekend , i have finished the external PSU!

Here are some internal view pictures.

On the upper side the two +/- Power Supply Modules,
in the lower left corner the 10H choke on amorphous cores from AE-Europe,
in the middle the 1st cap (3,9µF Mundorf supreme silver in oil) of the HV-PSU line,
in the lower right corner the Power Switch Module with onboard solid state relays.

And some close-up pictures

...

dvb projekt

diyAudio Member

Posted in Project builds, Reference TDA1541A DAC

Views 1913 Comments 4 dvb projekt is offline

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