Active Loudspeaker System (2)
A subwoofer for use with multimedia loudspeaker systems
Gerber file
CAM/CAD data for the PCB referred to in this article is available as a Gerber file. Elektor GREEN and GOLD members can exclusively download these files for free as part of their membership. Gerber files allow a PCB to be produced on an appropriate device available locally, or through an online PCB manufacturing service.
Elektor recommends the Elektor PCB Service service from its business partner Eurocircuits or AISLER as the best services for its own prototypes and volume production.
TIP: your first PCB at AISLER is free up to €30 with using the coupon code ELCCBB at checkout.
The use of our Gerber files is provided under a modified Creative Commons license. Creative Commons offers authors, scientists, educators and other creatives the freedom to handle their copyright in a more free way without losing their ownership.
Component list
R1,R2 = 220k?
R3,R4 = 22k?
R5,R6 = 4k?7
R7-R11 = 10k?
R12,R13 = 0.1? 5W
R14 = 2k?7
P1 = 22k? logarithmic. mono
P2 = 4k?7 linear. stereo
Capacitors:
C1,C2 = 470nF
C3 = 1nF, lead pitch 5mm
C4 = 330nF, lead pitch 5mm
C5 = 15nF, lead pitch 5mm
C6 = 150nF, lead pitch 5mm
C7 = 2µF2 MKT, lead pitch 5 or 7.5 mm
C8,C9 = 47µF 25V radial
C10,C13 = 100nF, lead pitch 5mm
C11 = 10µF 63V radial
C12 = 4µF7 63V radial
C14 = 4700µF 25V radial, lead pitch 7.5mm, max. diameter 17mm
Semiconductors:
D1 = LED, red, high-efficiency, 5mm
IC1 = TS924IN ST (Farnell)
IC2 = TDA7374B ST (RS Components)
IC3 = 7808
Miscellaneous:
JP1 = 3-way pinheader with jumper
LS1,LS2 = Visaton W170SC 4 ? Conrad Electronics)
2 x bass reflex tube, diameter 72mm, length 145mm (Conrad Electronics # 34 26 10-60)
Heatsink: e.g., SK100 (Fischer), height approx. 50mm *
Sealant tape: MDM-5 (Monacor/Monarch)
BAF wadding
PCB, order code 020054-2
* see text
Discussion (0 comments)