Bosch EVF-1181S EVF-1181S-PIW User Manual
Product codes
EVF-1181S-PIW
EVF-1122D and EVF-1152D
High-Power Series Acoustic Performance
The EVF-1122D and EVF-1152D full-range systems substitute the
DH7N large-format, 3-inch-diaphragm, 75-W compression driver
and 500-W woofers—DVX3121A 12-inch in the EVF-1122D and
DVX3151A 15-inch in EVF-1152D. While the continuous maximum
output of the “D” systems is unchanged (see specifications), their
dynamic performance is improved. The higher power capacity of the
woofers and, especially, the compression driver allow the systems
to produce higher sound levels at a given level of distortion. The
higher power capacity also results in less power compression,
where attempts to increase the sound level are not fully realized
because as the voice coils heat up their impedance rises, reducing
the acoustic effiency of the speaker system.
DH7N large-format, 3-inch-diaphragm, 75-W compression driver
and 500-W woofers—DVX3121A 12-inch in the EVF-1122D and
DVX3151A 15-inch in EVF-1152D. While the continuous maximum
output of the “D” systems is unchanged (see specifications), their
dynamic performance is improved. The higher power capacity of the
woofers and, especially, the compression driver allow the systems
to produce higher sound levels at a given level of distortion. The
higher power capacity also results in less power compression,
where attempts to increase the sound level are not fully realized
because as the voice coils heat up their impedance rises, reducing
the acoustic effiency of the speaker system.
EV- Innovation
DVX Low-Frequency Transducer
with forced air cooling
with forced air cooling
DH7N Large-Format
High-Frequency Compression Driver