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DDDAC

Sharing my DIY audiophile Projects

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Welcome to the world of DDDAC!

Welcome to the world of DDDAC!

2020-07-02 Doede Douma (DDDAC) Comments 4 comments

I started using this Blog-Site subdomain from dddac.com to blog my audio adventures 🙂 I will be starting to post here several topics and projects. As I have some projects done in the past, it will not be all very…

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My UltraCap experiments

My UltraCap experiments

2021-01-23 Doede Douma (DDDAC) Comments 0 Comment

Inspired by the many reports on the audiophile improvements when using UltraCaps (or super capacitors) in Audio applications, I decided it was time to start looking into this subject myself. For starters I wanted do some tests with it on my own DDDAC. Of course I am also interested in the technical aspects and possible use for future projects. But as always, get some facts first and listen to some music ….

DDDAC Power Supply (background and tweaks)

DDDAC Power Supply (background and tweaks)

2021-01-17 Doede Douma (DDDAC) Comments 1 comment

Introduction Here you see the well known DDDAC Power supply. I designed it to go together with the DDAC1794 kits, Of course it can also be use for many other audio applications. As DDDAC kit it comes as “5V” or…

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“Noise Floor” and S/N ratio in and with FFT plots

“Noise Floor” and S/N ratio in and with FFT plots

2020-11-26 Doede Douma (DDDAC) Comments 1 comment

Introduction We all know these FFT plots with a noise pattern. I see them all the time in Forums and other websites. The term Noise floor is always close… But is that also the Signal to Noise ratio (S/N ratio)?…

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The DDDAC Mu-Follower Module

The DDDAC Mu-Follower Module

2020-10-18 Doede Douma (DDDAC) Comments 2 comments

And how PCB capacitance spoiled the fist version… As you might have read, I am working on designing and building a tape head tube amplifier. For this you need quite some overall gain to overcome the gain losses in the…

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Categories

  • Arduino (4)
  • Digital Audio (2)
  • Electronic Design (6)
  • General DIY (6)
  • Loudspeakers (1)
  • Music (1)
  • Reel to Reel (4)
  • Suppliers (1)
  • Test & Measurement (4)
  • Tip of the Month (1)
  • Tube Amplifiers (4)
  • Turntables (1)
  • Tweaking (2)
Upgrading my CLEO 6 Tube preamplifier to CLEO 7

Upgrading my CLEO 6 Tube preamplifier to CLEO 7

2020-10-11 Doede Douma (DDDAC) Comments 4 comments

Introduction For many years now, I have been using Dick’s (Audio Creative) N30P Mu Stage Design. He called it the Cleo 6. It is a great double mono MU-Stage amplifier (see circuits) with top components. Over the years I started…

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Cleo 7 Picture Gallery

Cleo 7 Picture Gallery

2020-10-08 Doede Douma (DDDAC) Comments 1 comment

Sometimes pictures tell more than a thousand words… Here is a nice photo story of the construction of my CLEO 7Tube Pre Amplifier

DIY Warning – High Voltages

DIY Warning – High Voltages

2020-10-02 Doede Douma (DDDAC) Comments 0 Comment

Somehow I feel, that this should not be necessary, but experience shows that this WARNING is absolutely needed over and over again… All my projects are working with high voltages. 230V AC mains or even over 500 Volt DC voltage…

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Reel to Reel Taperecorder Equalization

Reel to Reel Taperecorder Equalization

2020-08-23 Doede Douma (DDDAC) Comments 1 comment

As mentioned in the earlier PR99 blog, I wanted to design and build a universal tape head amplifier. Just for fun and to see what I could squeeze out of the magnetic source, avoiding the internal Revox electronics. Which sounds…

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My new Revox PR99

My new Revox PR99

2020-08-19 Doede Douma (DDDAC) Comments 0 Comment

Rediscovering Reel to Reel I recently re-discovered the joy of Reel to Reel music reproduction. I started with an old, somewhat refurbished 4 track NAB Revox B77 with 3.75 and 7.5 ips speed. I use this one for the simple…

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Categories

  • Arduino (4)
  • Digital Audio (2)
  • Electronic Design (6)
  • General DIY (6)
  • Loudspeakers (1)
  • Music (1)
  • Reel to Reel (4)
  • Suppliers (1)
  • Test & Measurement (4)
  • Tip of the Month (1)
  • Tube Amplifiers (4)
  • Turntables (1)
  • Tweaking (2)
Building your own Audio rack

Building your own Audio rack

2020-07-03 Doede Douma (DDDAC) Comments 0 Comment

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Recent Posts

  • My UltraCap experiments 2021-01-23
  • DDDAC Power Supply (background and tweaks) 2021-01-17
  • “Noise Floor” and S/N ratio in and with FFT plots 2020-11-26
  • The DDDAC Mu-Follower Module 2020-10-18
  • Upgrading my CLEO 6 Tube preamplifier to CLEO 7 2020-10-11
  • Cleo 7 Picture Gallery 2020-10-08
  • DIY Warning – High Voltages 2020-10-02
  • Reel to Reel Taperecorder Equalization 2020-08-23
  • My new Revox PR99 2020-08-19
  • Building your own Audio rack 2020-07-03

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High Voltage Danger
High Voltage Danger

My LIN LP12 clone

DDDAC LIN LP12 clones with Kandid

Recent Comments

  • My UltraCap experiments - DDDAC on DDDAC Power Supply (background and tweaks)
  • Doede Douma (DDDAC) on Upgrading my CLEO 6 Tube preamplifier to CLEO 7
  • Jan Goormans on The DDDAC Mu-Follower Module
  • Алиса on “Noise Floor” and S/N ratio in and with FFT plots
  • "Noise Floor" and S/N ratio in and with FFT graphs - DDDAC on The DDDAC Mu-Follower Module
  • Arnold Spee, Isle of Wight, UK on Welcome to the world of DDDAC!
  • Evgeniy on Reel to Reel Taperecorder Equalization
  • Simon Jeffrey on Upgrading my CLEO 6 Tube preamplifier to CLEO 7
  • Upgrading my CLEO 6 Tube preamplifier to CLEO 7 - DDDAC on Cleo 7 Picture Gallery
  • Simon Jeffrey on Upgrading my CLEO 6 Tube preamplifier to CLEO 7
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