Connectiing The Amp And Speaker - Radial Engineering Headload User Manual

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CONNECTING THE AMPLIFIER AND SPEAKER
You can connect amplifi ers up to 120 Watts RMS (180W peak) to the Headload and drive
them at full power. We recommend using speaker cables eight feet or less in length with a
minimum gauge of 1.5mm
maintain the best power transfer. Use the chart below as a guide when selecting speaker
cables to use with your Headload.
Cable Length
1.2 meters (4')
2.4 meters (8')
3 meters (10')
3.7 meters (12')
4.9 meters (16')
5.5 meters (18')
6.0 meters (20')
It is important to match the impedance of the amplifi er and speaker cabinet with the Headload's
impedance. The Headload is available in 4, 8 and 16 Ohm versions. Depending on which one
you purchased, one of the FROM AMP jacks will be plugged.
8 OHM HEADLOAD
8 OHM AMP
CONNECTING TWO CABINETS
The Headload is equipped with two ¼"
TO parallel SPEAKER jacks that make
connecting more than one cabinet easy.
However it is important that the combined
impedance of both cabinets match the
impedance of the Headload. For instance,
two 8 Ohm cabinets equal a 4 Ohm load.
Therefore you would need the 4 Ohm version
of the Headload to connect two 8 Ohm cabs.
Cab A Cab B
16 Ohms 16 Ohms
8 Ohms 8 Ohms
4 Ohms 4 Ohms
Radial Engineering Ltd.
2
(14 awg). Longer speaker cables should use heavier gauges to
100 Watt Amp 100 Watt Amp
8 Ohms
2
1.0mm (16 awg) 1.0mm
1.5mm 2 (14 awg) 1.5mm
2
1.5mm (14 awg) 2.5mm
2
2.5mm (12 awg) 2.5mm
2
2.5mm (12 awg) 4.0mm
4.0mm 2 (10 awg)
Do not use
8 OHM SPK CAB
Total
8 Ohms
4 Ohms
2 Ohms (do not use)
50 Watt Amp
4 Ohms 8 Ohms
2
(16 awg) 1.0mm
2 (14 awg) 1.0mm
2
(12 awg) 1.5mm
2
(12 awg) 1.5mm
2
(10 awg) 1.5mm
Do not use 2.5mm
Do not use 2.5mm
4 OHM AMP
4 OHM AMP
7
True to the Music
50 Watt Amp
4 Ohms
2
(16 awg) 1.0mm
2 (16 awg) 1.5mm
2
(14 awg) 1.5mm
2
(14 awg) 2.5mm
2
(14 awg) 2.5mm
2 (12 awg) 2.5mm
2
(12 awg) 2.5mm
4 OHM HEADLOAD
4 OHM SPK CAB
Headload Guitar Amp Load Box
2
(16 awg)
2 (14 awg)
2
(14 awg)
2
(12 awg)
2
(12 awg)
2 (12 awg)
2
(12 awg)
CAB A CAB A
CAB B CAB B
8 OHM
SPK CABS