DAS Dynamics Serie Manual Del Usuario página 17

2. CONNECTIONS
Speaker connectors
• Factor series enclosures utilise colour coded bare wire
spring loaded push terminals.
•
DS series enclosures utilise two NL4 Neutrik Speakon
connectors. These connectors are specific for speaker
use and allow a safe and professional connection. For
plugging into an enclosure,
insert the male connector
into any of the inputs and
rotate it clockwise. It will
then lock into place and be
ready for use. The
connectors on the cabinets
are paralleled. This allows
for easy loop through from one speaker to the next.
Unused connector pins are also paralleled. Both
connectors can be used as either inputs or outputs.
Speaker cables
To ensure quality sound and minimum power loss, the speaker
cable needs to have a large enough cross section depending
on the cable length, number of speakers per channel and
speaker impedance. The total impedance for a number of
speakers in parallel is equal to the impedance of one divided
by the number of speakers. For instance, two DS-112 in
parallel total 4 ohms (8 ohms divided by 2 boxes equals 4).
The tables show the minimum size for different runs of cable
and four or eight ohms connected per channel:
•
Use the "2 boxes per channel" table when connecting a
single speaker per channel. For instance, one Factor-12 in
each channel of a stereo amplifier.
•
Use the "1 box per channel" table when connecting two
speakers to an amplifier channel. For instance, two
metres
100
metres
100
Factor/DS
1 box per amplifier channel
Cable Length
feet
2,5 8
5 16
7,5 25
10 33
15 50
20 66
50 164
75 250
328
2 boxes per amplifier channel
Cable Length
feet
2,5 8
5 16
7,5 25
10 33
15 50
20 66
50 164
75 250
328
Manual del usuario /
Factor-12 units in parallel.
NOTE : The tables are not applicable to ("T") versions with
input tranformer.
When connecting more than one speaker to an amplifier
channel there are two wiring options. The first is to run cable
from the amplifier's output terminals to each speaker. The
second is to connect the closest speaker to the amplifier and
then connect the two speakers together with a loop through
cable that has a Speakon connector on both ends. We'll be
paralleling speakers in both cases. The latter is the most
common and practical option, the former providing a higher
damping factor.
Load Impedance
Never use a total impedance load that is lower than the lowest
impedance that an amplifier will take. Virtually all professional
amplifiers will accept loads down to four ohms safely in stereo
mode. Many are rated for two ohm loads but often will run
into overheating protection when used this way, particularly in
high ambient temperature and high output power applications.
Never connect more speakers to an amplifier's channel than it
will take, i.e. do not load a channel with a total impedance that
is lower than the minimum load specified by the manufacturer.
Avoid series or series-parallel wiring schemes, since they
degrade sound quality and thus we do not recommend them
for applications other than background music, paging, or
surround sound.
Connecting transformer equipped models
Units with suffix "T" feature a constant voltage line
transformer, used with amplifiers that typically provide 70 or
100V output. If you have an amplifier with both voltage
outputs, use 100V, since the higher voltage results in lower
cable losses.
Minimum cable thickness
mm²
0,3
0,5
0,8
1,31
2,1
3,3
5,3
8,35
13,3
Minimum cable thickness
mm²
0,8
1,31
2,1
3,3
5,3
5,3
13,3
20,8
33,3
User's manual
Gauge no. (AWG)
22
22
18
16
14
12
10
8
6
Gauge no. (AWG)
18
16
14
12
10
10
6
4
2
17