Monacor DNU-400 Instructions D'assemblage page 10

For the connection of module DSP-1, cable connections
GB
to an external mounting site have to be soldered in.
4.2.2 MP 6 dB/6 dB without impedance linearization
or level attenuation
1) Assemble the positions C3 and/or C4 as well as L2.
2) Connect the midrange speaker with "+M" and "-M"
(do not mix up with "-M ").
4.2.3 MP 6 dB/6 dB with impedance linearization
1) Assemble positions C3 and/or C4 as well as L2, C6,
and R3.
2) Connect the midrange speaker with "+M" and "-M"
(do not mix up with "-M ").
4.2.4 MP 6 dB/6 dB with level attenuation
1) Assemble the positions C3 and/or C4 as well as L2,
R2, and R3.
Hint: If the level attenuation is not made via a voltage
divider as usual but via a series resistor only, do not
assemble position R3.
2) Connect the midrange speaker with "+M" and "-M ".
4.2.5 MP 6 dB/12 dB all variants
Assemble the PCB as described in the corresponding
chapter 4.2.2, 4.2.3, or 4.2.4, and additionally position
C5.
When realizing a 12 dB limiting of the midrange
speaker toward the low frequencies, the midfre-
quency branch must be switched as a sequence of a
low pass and a high pass (TPHP) or as a so-called
"real" band pass (BP):
TPHP Solder a jumper from "X" to "Y".
BP Solder a jumper from "X" to "Z".
(PCB imprint in each case
Then the following options result:
4.2.6 MP 12 dB/6 dB without impedance lineariza-
tion or level attenuation
1) Assemble positions C3 and/or C4, L2 as well as L3.
2) Connect the midrange speaker with "+M" and "-M"
(do not mix up with "-M ").
4.2.7 MP 12 dB/6 dB with impedance linearization
1) Assemble positions C3 and/or C4 as well as L2, L3,
C6, and R3.
2) Connect the midrange speaker with "+M" and "-M"
(do not mix up with "-M ").
4.2.8 MP 12 dB/6 dB with level attenuation
1) Assemble positions C3 and/or C4 as well as L2, L3,
R2, and R3.
Hint: If the level attenuation is not made via a voltage
divider as usual but via a series resistor only, do not
assemble position R3.
2) Connect the midrange speaker with "+M" and "-M ".
4.2.9 MP 12 dB/12 dB without impedance lineariza-
tion or level attenuation
1) Assemble positions C3 and/or C4 as well as C5, L2,
and L3.
2) Connect the midrange speaker with "+M" and "-M"
(do not mix up with "-M ").
10
)
4.2.10 MP 12 dB/12 dB with impedance linearization
1) Assemble positions C3 and/or C4 as well as C5, C6,
L2, L3, and R3.
2) Connect the midrange speaker with "+M" and "-M"
(do not mix up with "-M ").
4.2.11 MP 12 dB/12 dB with level attenuation
1) Assemble positions C3 and/or C4 as well as C5, L2,
L3, R2, and R3.
2) Connect the midrange speaker with "+M" and "-M ".
4.3 The high pass (HP)
The limiting of low and midrange frequencies from the
tweeter is not only of great importance to the sound but
also to the capability of the entire combination. Accord-
ingly a slope up to 18 dB as well as a protective device
are provided for the DNU-400.
4.3.1 Tweeter protection
If the tweeter is to be equipped with a speaker protective
device, one of the devices indicated in chapter 4.2.1
"Midrange speaker protection" can be inserted into posi-
tion S2.
Important!
If no protective device is used, solder a jumper into posi-
tion S2 in any case.
4.3.2 High pass 6 dB without level attenuation
1) Assemble position C7 only.
2) Connect the tweeter to "+H" and "-H".
4.3.3 High pass 6 dB with level attenuation
1) Assemble positions C7, R4, and R5.
Hint: If the level attenuation is not made via a voltage
divider as usual but via a series resistor only, do not
assemble position R5.
2) Connect the tweeter to "+H " and "-H".
4.3.4 High pass 12 dB without level attenuation
1) Assemble the positions C7 and L4.
2) Connect the tweeter to "+H" and "-H".
4.3.5 High pass 12 dB with level attenuation
1) Assemble positions C7, L4, R4, and R5.
2) Connect the tweeter to "+H " and "-H".
4.3.6 High pass 18 dB without level attenuation
1) Assemble the position C7, C8, and L4.
2) Connect the tweeter to "+H " and "-H".
4.4 A common special circuit:
1
the 2 / -way combination
2
In the midfrequency range of this circuit a bass/mid-
range speaker is used which transmits the entire bass
range and is supported by an additional bass speaker in
the very low frequency range. Thus, alternatively to this,
both voice coils of a double voice coil bass/midrange
speaker can be controlled as well. Different to the 3-way
network, in the midfrequency range instead of a band
pass a second low pass is required which is provided
with a higher crossover frequency than that for the bass
speaker.