DACS Ltd, Unit A19 Stonehills, Shields Road, Gateshead, NE10 0HW
5
That’s it. Once connected you can select what you want to hear and set up each amplifier before
getting down to the serious business of comparing options and choosing your combinations.
TECHNICAL NOTE
Matching the output of valve amplifiers to speaker
cabinet impedance can be critical. Most amplifiers have
switches for changing the expected impedance, and
many cabinets have different connection options.
Please check that the amplifiers you have can drive the
connected cabinets.
Labelling the Selector
The selector has a neodymium magnetic strip over the switches. We provide 20 white magnetic
labels and a white board pen. The strips are cut to size to align with the switches. We have supplied
20 labels so you can keep a collection of prewritten labels or stick on printed tape labels (Red on
clear for amplifiers, Blue on clear for speakers for example) ready for use on a new session.
Selecting
Selecting the amplifier and speaker(s) you want to hear is very straightforward; press the amplifier
select button for the amp you want, and one of the illuminated speaker select buttons to choose the
cabinet. To select two cabinets, hold one key down then press another available button.
TECHNICAL NOTE
Please ensure that your amplifier can drive two
cabinets.
As a general rule, the two cabinets should be of the
same impedance. The resultant impedance is half that
of each cabinet. In practice two 16 Ohm cabinets will
result in an 8 Ohm load, two 8 Ohm cabinets a 4 Ohm
load, and two 4 Ohm cabinets a 2 Ohm load.