Pioneer SA-6300

un altro Pioneer SA-6300:

 Specs
2x20W@8Ω/40-20000Hz,

2x2 Nec D313D B507D power transistors,
2x4700µF Elna filter caps,
Elna, Nippon Chemicon SL, Sanyo components, tantalum caps,
phono RIAA,
mm 350x125x282, kg 6,9.

Polk Audio RT15i

Specs
2-way configuration,
bass reflex via front/rear-firing ports,
midwoofer Polk Audio MW5530 133mm, metallic basket, rubber surround,
dome tweeter Polk Audio SL1902 19mm,
Polk Audio powerPORT,
20-100W@8Ω,
55-24000Hz, -3 dB@63Hz,
sens. 89 dB,
mm 169x283x216, kg 4,3.

MB Quart 690 MCS

Specs
2-way configuration,
bass reflex via front-firing port,
  woofer MB Quart 175mm,
dome tweeter MB Quart 25mm,
2x90W@4Ω,
38-32000 Hz,
sens. -- dB,
mm 265x850x300, kg 18,0.