Two-conductor parallel speaker cable of 2.5 mm² each, one red and one black so you do not lose the polarity when connecting them. The conductor is CCA, copper-clad aluminium, and the sheath is PVC. It is sold on reels of 10, 25, 50 and 100 metres, for connecting passive speakers to amplifiers and sound systems.
It is worth knowing what CCA implies, because it is what sets this cable apart from a pure copper one. Aluminium is a poorer conductor: the resistance per metre is around 50 % higher than that of OFC copper of the same cross-section. In practice this means slightly less level and, above all, a lower damping factor, which is what controls the bass.
With the usual criterion of keeping the cable resistance below 5 % of the speaker impedance, with an 8 ohm speaker it is best not to exceed about 19 metres per speaker with this cross-section in CCA; with a 4 ohm one, about 10 metres. That is almost twice the distance of the 2 x 1.5 mm² cable. The long reels are for splitting the cable between several speakers, not for a single 50 or 100 metre run.
Key features
- Two 2.5 mm² conductors, in red and black to mark the polarity
- CCA conductor: copper-clad aluminium, 2 × 50 strands of 0.25 mm
- Around 50 % more resistance per metre than OFC copper
- Recommended up to about 19 m per speaker at 8 ohms
- PVC sheath
- Reels of 10, 25, 50 and 100 m
Specifications
| Brand |
TiendaCables |
| Type |
Two-conductor parallel speaker cable |
| Cross-section |
2 × 2.5 mm² |
| Conductor |
CCA (copper-clad aluminium) |
| Construction |
2 × 50 strands of 0.25 mm |
| Polarity |
Red and black |
| Outer material |
PVC |
| Recommended length |
Up to about 19 m per speaker at 8 ohms |
| Lengths |
Reels of 10, 25, 50 and 100 m |
