1238CF/DF
1238
1234
1236
1 1.5 2 5 10
1.6 3.2 5 6.5 16.5 32 50 (ft)
8320
8030
8040
8050
1032
8260
8351
100100
8020
8010
8330
Listening distances and sound pressure levelsThe short-term and long-term sound pressure levels (SPL)listed take into consideration typical room environments parametersfor each product (ITU-R BS.1116-1 Recommendation):a) variable typical room volumesb) variable typical room reverberation times (RT60)
If the room reverberation time is longer, it will mainly affectthe long-term sound pressure levels that will be higher thanthe ones shown.
Not recommended distancesWhen the distance to the monitor is too short, summing of sound frommultiple drivers is not happening as designed, and this affects theflatness of the frequency response. A flatter and more stable frequencyresponse is obtained at a larger distance.
100100
100100
100100
100100
9792
9489
9388
9085
8984
100100
100100
100100
100100
100100
9796
9493
9291
8988
8887
100100
100100
100100
100100
100100
10195
9892
9690
9387
9286
100100
100100
100100
100100
100100
10198
9895
9693
9390
9289
100100
100100
100100
100100
100100
10597
10294
10092
9789
9688
100100
100100
100100
100100
100100
106100
10397
10195
9791
9690
100100
100100
100100
100100
100100
111102
10899
10697
10293
10192
100100
100100
100100
100100
100100
112103
109100
10798
10394
10193
100100
100100
100100
100100
100100
114104
110100
10898
10494
10393
100100
100100
100100
100100
100100
114104
100100
10098
10094
10093
110100
10999
10494
10393
112102
10797
10595
116111
110105
108103
120115
113108
111106
124119
118113
114109
10595
107102
110105
113108
10596
Short-term sound pressure levelsMaximum short-term sine wave sound pressure levelaveraged from 100 Hz to 3 kHz, measured in half-space,on-axis (no weighting).
Long-term sound pressure levelsMaximum long-term RMS sound pressure level, measured in half-space, on-axis, with simulated programme signal according toIEC 60268-5 (limited by driver unit protection circuit, no weighting).
M030 104100
100100
100100
100100
100100
10498
10195
9993
9690
9589
M040 100100
100100
100100
100100
100100
108102
10599
10397
9993
9892
355 m31'950 ft 0.21 s
365 m3
2'300 ft 0.22 s
375 m3
2'650 ft 0.23 s
365 m
32'300 ft 0.22 s
375 m
32'650 ft 0.23 s
375 m
32'650 ft 0.23 s
385 m33'000 ft 0.24 s
385 m
33'000 ft 0.24 s
395 m33'400 ft 0.25 s
395 m33'400 ft 0.25 s
3110 m33'900 ft 0.26 s
3110 m33'900 ft 0.26 s
3120 m34'250 ft 0.26 s
3170 m36'000 ft 0.29 s
3200 m37'100 ft 0.31 s
3400 m314'200 ft 0.43 s
Guide 1
Room volume
Room reverberation time (RT60)
Distance from the monitor (meters, feet)
Genele
c p
roduct m
odels
355 m
31'950 ft 0.21 s
(m)0.5 1 1.5 2 5 10 15
8340100100
100100
100100
100100
1101100
111101
10898
10696
10292
10191
385 m33'000 ft 0.24 s
8350 100100
100100
100100
100100
100100
110101
10899
10495
10394
395 m33'400 ft 0.25 s
Genelec Monitors
Listening Distance andSound Pressure Level
100100100100114104
1237 113107
108102
106100
106100
3125 m34'420 ft 0.27 s
100100100100115109
113104
30.3
110010010297
29186
100100102101
100100106100
106103
100100
100100117108
100100119109
104100
1001009190
1001009589
1001009491
1001009791
1001009890
1001009993
10010010195
10010010494
10010010394
10010010495
10010010596
10010010696
10010010098
10696
10999
110104
113108
117112
121116
9.81.0
109103
110102
Direct sound dominatesWithin this distance the direct sound from the monitor has a higher levelthan the reverberant sound in the room. Placing the monitor within thisdistance range is advantageous in minimizing the tendency of the roomreverberation to change the character of the monitored sound colourand affect the precision of stereo imaging. The level of the direct soundrelative to the reverberant sound progressively reduces as the distanceto the monitor increases.
Critical distanceThe critical distance is the distance where the direct sound from themonitor and the reverberant sound in the room have equal level inmidrange frequencies (approximately between 200 Hz and 4 kHz).The critical distance is affected by the room volume, the roomreverberation time (referred to ITU-R BS.1116-1 Recommendation),and the directivity of the monitor.
355 m31'950 ft 0.21 s
365 m3
2'300 ft 0.22 s
375 m3
2'650 ft 0.23 s
365 m
32'300 ft 0.22 s
375 m
32'650 ft 0.23 s
375 m
32'650 ft 0.23 s
385 m33'000 ft 0.24 s
385 m
33'000 ft 0.24 s
395 m33'400 ft 0.25 s
395 m33'400 ft 0.25 s
3110 m33'900 ft 0.26 s
3110 m33'900 ft 0.26 s
3125 m34'420 ft 0.27 s
3120 m34'250 ft 0.26 s
3170 m36'000 ft 0.29 s
3200 m37'100 ft 0.31 s
3400 m
314'200 ft 0.43 s
Reverberant sound dominatesAt these distances the reverberant sound in the room has a higher levelthan the direct sound from the monitor. This balance progressivelyincreases as the distance from the monitor increases.The monitor can be used in these distances, but the sound character isstrongly affected by the reverberation characteristics of the room, andthis has a progressively increasing effect on the sound colour andstereo imaging accuracy.
Not recommended distancesWhen the distance to the monitor is too short, summing of sound frommultiple drivers is not happening as designed, and this affects theflatness of the frequency response. A flatter and more stable frequencyresponse is obtained at a larger distance.
Distance from the monitor (meters, feet)
385 m33'000 ft 0.24 s
395 m33'400 ft 0.25 s
Genelec Monitors
Direct Sound Dominance
Guide 2
Room volume
Room reverberation time (RT60)
355 m31'950 ft 0.21 s
(m)1 1.5 2 5 10 153
3.2 5 6.5 16.5 32 50 (ft)9.8
1238CF/DF
1238
1234
1236
1.6
8320
8030
8040
8050
1032
8260
8351
8020
8010
8330
M030
M040
Genele
c p
roduct m
odels
0.5
8340
8350
1237
0.3
1.0
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