Yamaha a 500 erősítőhöz mekkora hangfal?

Mekkora hangfalat kössek egy yamaha a 500 erősítőre? 4db hangfalat lehet rakotni.

Specifications

Power output: 70 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.005%

Damping factor: 50

Input sensitivity: 0.16mV (MC), 2.5mV (MM), 150mV (line)

Signal to noise ratio: 76dB (MC), 92dB (MM), 100dB (line)

Channel separation: 55dB (MM), 60dB (line)

Output: 150mV (line)

Dimensions: 435 x 112 x 327mm

Weight: 7.3kg

Year: 1982