Necesito ayuda para montar un hilo musical

Hola buenas, tengo un espacio de unos 5m x 15m y quiero poner un hilo musical.

¿Me recomendáis unos altavoces? No se si de techo o pared y comocolocarlos, y no se si 2 altavoces o 4... Tengo un falso techo donde se podrían instalar los de techo y no me importa la estética en los de pared a si que podría barajar las 2 opciones

Presupuesto 80 - 120€

Los conectaré a un viejo amplificador Sansui AU-4900


Estas son las especificaciones del ampli...

Specifications AU-4900
Audio Section
Power Output (at rated distortion)
Music Power (IHF): 140 watts into 4 Ω at 1,000 Hz; 100 watts into 8 Ω at 1,000 Hz
Continuous RMS Power Both Channel Driven:
46 watts per channel into 4 Ω at 1 kHz
38 watts per channel into 8 Ω at 1 kHz
35 watts per channel into 8 Ω from 40 to 20, 000 Hz
Total Harmonic Distortion: less than 0,15% at rated power output
Intermodulation Distortion (70 Hz : 7,000 Hz = 4:1 SMPTE method): less than 0,2% at rated power output
Power bandwidth (IHF): 10 to 40,000 Hz at rated distortion
Load Impedance: 4 Ω to 16 Ω
Frequency Response (at 1 watt): 10 to 40,000 Hz, +0,5 dB -1,5 dB
RIAA Curve Deviation (Phono): 30 to 15,000 Hz; ±0,5 dB
Damping Factor: approx. 50 at 8 Ω load
Channel Separation (at rated output 1,000 Hz):
phono: better than 60 dB
Aux, Tuner, Tape Monitor: better than 65 dB
Hum and Noise (IHF):
Phono: better than 75 dB
Microphone: better than 65 dB
Aux, Tuner, Tape Monitor: better than 90 dB
Input Sensitivity / Impedance (1,000 Hz for rated output):
Phono: 2,5 mV/ 50 kΩ
Microphone: 2,5 mV/ 10 kΩ
AUX, Tuner: 130 mV/ 50 kΩ
Tape Playback (PIN): 130 mV/ 50 kΩ
Max. Input Capability (at 1,000 Hz, 0.2% THD):
Phono: 230 mV/50 kΩ
Recording Output:
Tape (PIN): 100 mv
Controls
Bass: +12 dB -12 dB at 50 Hz
Treble: +12 dB -12 dB at 15 kHz
Loudness: 10 dB at 50 Hz; 8 dB at 10 kHz
Filters
Low: -3 dB at 100 Hz (6 dB/oct.)
High: -3 dB at 7,000 Hz (6dB/oct.)
Muting (audio): 0 dB, -20 dB
General
AC Outles: switched Max. 100 watts unswitched total 150 watts
Semiconductors: 29 Transistors; 1 Zener Diode; 18 Diodes; 1 LED
Power Requirements: 100, 120, 220, 240 V 50/60 Hz
Power Consumption: 210 watts Max.; 90 watts rated
Dimensions (W x H x D): 400 x 120 x 240 mm (15¾" x 4¾x 9½")
Weight: 6,3 kg (14,8 lbs) net


Muchas gracias.