Säljes 24 apr Jönköping

Dynaco A-10 par

Ett par mycket ovanliga Dynaco A-10 klassiska högtalare i fint skick. Låter fantastiskt bra!

This speaker system adopts the dumped bass reflex method.
A-30mkII and A-25mkII have almost the same design except for the diameter of woofer.

The dumped bass reflex is a semi-braking system with a special glass fiber filled in the opening of the grating in the lower part of the baffle to give air to the woofer. The inner wall of the enclosure is covered with two layers of glass fiber and rock wool with different sound absorption coefficients to reduce internal reflection.
This structure eliminates over-braking of the woofer, which tends to occur in a completely enclosed type, and suppresses the effect of resonance at the opening, which is pointed out as a defect of the bass reflex type.

A 18 cm cone type woofer is installed in the low range.
Instead of the heavy vibration system of the long voice coil often seen in the completely enclosed type woofer, a light vibration system with small amplitude is adopted.

A dome-shaped tweeter is installed in the high range.
Uses lightweight diaphragm as well as woofer.