Technical data

19
GTC Manual / english
15 . Technical Data
GTC 55 GTC 77 GTC 88 GTC Sub
Tweeter X-ART X-ART X-ART –
Velocity transfer ratio 4:1 4:1 4:1 –
Subwoofer – 175 mm / 7“ (2x) 220 mm / 8.5“ (2x) 310 mm / 12“
Woofer material –
Carbon / Rohacell /
Glass fibre
Carbon / Rohacell /
Glass fibre
paper
Midwoofer 145 mm / 5.5“ 107 mm / 4“ 145 mm / 5.5“ –
Woofer material
Carbon / Rohacell /
Glass fibre
Carbon / Rohacell /
Glass fibre
Carbon / Rohacell /
Glass fibre
–
Built-in amplifiers – – – 1
Subwoofer channel
1/2
– – – 200 W / 300 W
Input sensitivity – – – -60 to +6 dB
Frequency response 45 Hz - 50 kHz 38 Hz - 50 kHz 34 Hz - 50 kHz 22 Hz - 150 kHz
Crossover frequencies 3000 Hz 300 / 3200 Hz 400 / 3000 Hz 50 - 150 Hz
Power handling (RMS/
music)
1/2
120 W / 180 W 150 W / 230 W 180 W / 260 W –
Efficiency ≥ 86 dB /W/m ≥ 88 dB /W/m ≥ 90 dB /W/m –
Max. peak acoustic
output in 1m per pair
114 dB 118 dB 124 dB Max. peak: ≥ 115 dB
Impedance 8 Ω 4 Ω 4 Ω 10 kΩ
Input Speaker wire terminal Speaker wire terminal Speaker wire terminal XLR / RCA
Weight 11.2 kg / 24.7 lb. 20.6 kg / 45.4 lb. 27.5 kg / 60.6 lb. 25.8 kg / 56.9 lb.
Height x Width x Depth
505 x 206 x 316 mm /
20“ x 8“ x 12.5“
810 x 260 x 317 mm /
32“ x 10“ x 12.5“
997 x 300 x 317 mm /
39.5“ x 12“ x 12.5“
560 x 480 x 471 mm /
22“ x 19“ x 18.5“
Warranty 10 years 10 years 10 years 5 years
Operating temperature
0° C to 50° C (32° F to
122° F)
0° C to 50° C (32° F to
122° F)
0° C to 50° C (32° F to
122° F)
0° C to 40° C (32° F to
104° F)
Storage temperature
-30° C to 70° C (-22° F
to 167° F)
-30° C to 70° C (-22° F
to 167° F)
-30° C to 70° C (-22° F
to 167° F)
-30° C to 70° C (-22° F
to 167° F)
Humidity Max. 90 % not condensing Max. 90 % not condensing Max. 90 % not condensing Max. 90 % not condensing
1 = long term IEC 265-8-Wrms / 10 min
2 = nominal IEC 265-8 = Peak Power 5 µsec