Christians Blog » Subwoofer http://doktormadsen.dk/wp Stuff about stuff Fri, 20 Jan 2012 17:28:56 +0000 en hourly 1 http://wordpress.org/?v=3.3.1 Subwoofer Project http://doktormadsen.dk/wp/2009/10/subwoofer-ideas/ http://doktormadsen.dk/wp/2009/10/subwoofer-ideas/#comments Sun, 25 Oct 2009 20:29:30 +0000 chr_madsen http://doktormadsen.dk/wp/2009/10/12/ This post will be updated as I decide on the different aspects.

I’ve decided to build a subwoofer + amp for my old, rusty, trustworthy Felicia. This is how my brainstorm has ended up so far:

TDA1562 based amp

Like http://www.stardi.com/diy-12-volt-chip-amp-70-watts-car-power-amplifier/

Requires ~12V and provides 70W music power into 4Ω.

I considered building a class D amplifier, but learned that class D requires a switch mode power supply in order to provide mentionable power. During my research, I continously stumbled upon Phillips TDA1562 which operates as a combination of class-AB and class-H depending on temperature, allowing it to deliver up to 70W depending on supply voltage and die temperature.

The basic TDA1562 setup requires only a small number of passives: some capacitors for the power supply, two giant capacitors for the class-H operation and a couple of other passives.

Speaker Unit(s)

To be decided.

Should look mean, but sound good and be not-too-pricey.

Speaker Box

Should be covered with.
  • Tweed and round headed nails + alu/metal dashboard (a’la 60′s guitar amp)
  • Cotton filling + fake leather + sofa buttons
  • Fake fur
  • Tartan
  • Hessian
  • Fake leopard
  • Latex
  • Varnish
  • Lace or cutwork
  • Wood laminate

Decoration/status LEDs (under cloth?)

  • Skull
  • Smiley
  • VU
  • Status/Clip
  • Foot tapping guy
Dimensions
To be decided – depends on speaker
Size
To be decided- depends on speaker

Shape/type

To be decided- depends on speaker

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