Leema-acoustics Hydra Handbook - Front Panel Controls

Loudspeaker terminals  

There are two pairs of shrouded loudspeaker terminals on the Hydra's rear panel, one pair for the left loudspeaker and one pair 

for the right loudspeaker. They can accept 4mm banana type plugs or bare wire connections, however the 4mm banana plug 

holes are fitted with plastic plugs to comply with BSEN60065 safety regulations.  Removal of these plugs will invalidate any 

electrical safety approval of this product, but is necessary if banana plugs are to be used.  

When using bare wires, strip about 10mm of insulation from the end of the cable, insert it in to the hole revealed by unscrewing 

the binding post heads. Gently screw down the head until finger tight. Do not use excessive force to tighten the posts since this 

can cause multi-strand cables to fray and, in extreme cases, to bridge the loudspeaker terminals causing a short circuit, which 

could seriously damage the amplifier.

Cables

Never underestimate the importance of good quality speaker cables, bell wire or lighting flex will simply not do.  Speaker cables 

can be very synergistic. The better the system resolution, the more easily the differences between cables can be discerned.  To 

offer the best possible signal flow, Leema electronics are internally wired with NORDOST mono-filament cable. NORDOST speaker 

cables and interconnects will provide superb results. For those with a tighter budget, Leema’s own LynX cables will fully 

complement the system.

Front panel controls

Standby button 

The standby button will be illuminated in standby mode. By default, Hydra will automatically turn on if the Tucana controlling the 

system has any of its multi-channel inputs selected, or if it is being used for bi-amping a system. However, the possible 

permutations for bi-amplified Hydras in a large scale system are potentially quite complex. For instance you could have a whole 

Connections

HYDRA

9