Dynaco A-10 Aperiodic, 1971, made in Denmark


The speaker system which adopted the damped bass-reflex system. 

They are A-30mkII and A-25mkII with the almost same design except the aperture of a Woofer. 

The damped bass reflex filled up with special glass fiber opening of the lattice which is a bass-reflex system of half-braking structure, and is in the baffle lower part, and has given the air system of the grade to the Woofer. Moreover, the sound-absorbing material in which the acoustic absorption coefficients of glass fiber and rock wool differ is doubly stuck on an enclosure wall, and internal reflection is reduced. 
The influence of a vibration of opening which loses fault braking of the Woofer which tends to be produced with a perfect encapsulated type, and is indicated to be a bass-reflex type fault from this structure is suppressed. 

The 18cm corn type Woofer is carried in low-pass. 

Not the heavy vibration system of the long voice coil often looked at by the Woofer of a perfect encapsulated type etc. but the light vibration system which took the small amplitude is adopted. 

The tweeter of a dome shape is carried in the high region. 
The lightweight diaphragm is adopted like a Woofer. 

System: 2 ways and 2 speaker dual spectrum dumping sealing system - Book shelf type
Recommended amplifier Range (watts) 20-60 Watt
DIN Power Rating (watts) 35 Watt
Tweeter 1.5"
Woofer 6.5"
Impedance: 8 Ohm
Tweeter Control Positions N/A
Frequency response: 45Hz - 20kHz
Output sound pressure level: 94dB
Crossover frequency: 1Khz
Use unit:

  • For low-pass: 18cm corn type  
  • For high regions: Dome shape 
Replaceable Grille  yes
Enclosure Design aperiodic
Dimensions W x H x D: 200 x 380 x 210 mm 8.5" x 15" x 8"
Shipping Weight 12 lbs.
List Price $99.95/pr.
Production Date 1971
Weight : 5 kg