Safety Notes; Specifications - Monacor DSP-1 Bedienungsanleitung

All operating elements and connections described
can be found on the fold-out page 5.
1 Applications
The module DSP-1 serves for the protection of sensi-
tive speakers in case of overload by excessive level
peaks. The max. admissible load can be adjusted. The
positive wire to the speaker is interrupted by a relay if
the adjusted power is exceeded.
There is no impairment like power loss or sound
influence. The module is especially used for tweeters,
but it can also protect midrange speakers or smaller
multi-way speaker systems in the entire audio range
from 20 Hz to 20 kHz. A subsequent mounting into
exist ing systems is possible without problems.

2 Safety Notes

This module corresponds to all relevant directives of
the EU and is therefore marked with
G
The module is suitable for indoor use only. Protect it
against dripping water and splash water, high air
humidity, and heat (admissible ambient temperature
range 0 – 40 °C).
G
For cleaning only use a dry, soft cloth. Do not use
any chemicals or water.
G
No guarantee claims for the module and no liability
for any resulting personal damage or material
damage will be accepted if the module is used for
other purposes than originally intended or if it is not
correctly connected.
If the module is to be put out of operation
definitively, take it to a local recycling plant for
a disposal which is not harmful to the envi-
ronment.
3 Connection
The entire connection can be taken from the wiring dia-
gram on page 5.
1) Connect the amplifier output or the output of the
crossover network for the speaker to be protected
to the contacts IN+ (positive pole) and IN- (nega-
tive pole).
2) Connect the speaker to the contacts OUT+ (posi-
tive pole) and OUT- (negative pole). Pay special
attention to the correct connections of all negative
and positive poles. Otherwise the sound may be
impaired by a reversed phase.
3) If an optical indication is desired to show that the
module has responded in case of overload, a series
connection consisting of a protective diode
(1N4007), a series resistor (1 – 5 kΩ, 0.5 W), and an
LED may be connected to the contacts LED+ and
LED-. However, these components are not re -
quired for a perfect protection function.
All rights reserved by MONACOR
be reproduced in any form or by any means for any commercial use.
.
® INTERNATIONAL GmbH & Co. KG. No part of this instruction manual may
The breaker contact for the speakers consists of
a selector switch. Thus, in case of overload the out-
put voltage of the amplifier switches to the contact
LED+. If an LED is connected to this contact, the
LED lights to the beat of the overload.
4 Adjusting the Threshold
The threshold for the protection circuit is factory-set to
approx. 20 W for an 8 Ω speaker. This corresponds to
40 W for a 4 Ω speaker. By turning trim potentiometer
TR1 (a) clockwise, the threshold can be adjusted to
max. 200 W for an 8 Ω speaker. This corresponds to
400 W for the connection of a 4 Ω speaker.
For exact adjustment a heavy duty resistor, an
effective voltmeter and a sine generator or test CD are
required. If necessary, contact an specialized work-
shop.
Caution! If the threshold is adjusted too high, there is
no protection of the speaker by the module.

5 Specifications

Threshold
of the protection circuit
for 8 Ω speakers: . . . . . . . approx. 20 – 200 W
for 4 Ω speakers: . . . . . . . approx. 40 – 400 W
Power supply: . . . . . . . . . . . not required
Admissible
ambient temperature: . . . . . . 0 – 40 °C
Dimensions: . . . . . . . . . . . . . 75 × 42 × 50 mm
Weight: . . . . . . . . . . . . . . . . . 110 g
Subject to technical modification.
GB
7