The Dynaco Streo 120 is an all silicon transistor
basic power amplifier for use with separate preamplifiers such as the Dynaco
PAT-4 or PAT-5, or for use with tape recorders or tuners such at the FM-5 or
AF-6, which have their own volume controls. The Stereo 120 contains two 60 watt
amplifiers on one chassis with a common power supply.
Although the
Stereo 120 is an solid state device, containing transistors and similar
semi-conductors, it has been designed to be used under normal conditions
without special safety precautions, just as if it were a high grade tube
amplifier. Thus it can be connected to source and speaker components and used
with confidance in all conventional arrangements. There are no circuit
breakers, speaker fuses, or other resettable devices to impede the use of the
Stereo 120 under any reasonable conditions of use or abuse. This is achieved by
using novel circuits which automatically and instantly protect the amplifier.
The
components in the Stereo 120 are of the highest quality to protect against
failure, both now and for many years in the future. All parts are used
conservatively with close tolerances to assure proper operation, and etched
circuit modules are pretested under actual use conditions to ensure that every
unit, after assembly, will meet the specifications normally associated with
laboratory prototypes.
The
specifications of the Stereo 120 speak for themselves. The distortion at low
levels is comparable to that of the finest tube designs, while the high power
distortion remains inaudible. Specifications do not reveal all the facets of
sound quality. However. In use with varying program material, the Stereo 120
justifies its design efforts to have qualities of ease and naturalness always
sought and rarely achieved in solid state designs. There is no extra brightness
or stridency which is unfortunately someties attributed to high fidelity sound,
but rather there is an impression of limitless range and efortless handling of
the highest power peaks.
Like any
precision equipment, the superior capabilities of the Stereo 120 will best be
obtained when it is utilized properly.
Specifications
Power Output
Rating:
60
watts everage continuous power per channel into 8 Ω at any frequency between 25 Hz to 15 kHz at less than 0,5% THD.
Distortion decreases at lower power levels. This is in accordance with F.T.C.
rating requirements, including preconditioning.
Frequency
Response:
5 Hz to 100
kHz ±0,5 dB
Intermodulation
Distortion:
Less
than 0,5% at any power level up to 60 watts per channel into 8 Ω with any combination of test frequencies.
Distortion reduces at lower power levels.
Noise:
95 dB below
rated output unweighted with shorted input; 100 dB down by IHF standards
Damping
Factor:
Creater than
40 from 20 Hz to 20 kHz
Separation:
More than 70
dB from 20 Hz to 20 kHz
Input:
100 k Ω, 1,5 volts for 60 watts output
Semiconductor
Completed:
15
transitors; 15 diodes
Power
Requirements: 100, 120, 220, 240 V 50/60
Hz
Power
Consumption: 400 watts
Dimensions
(W x H x D): 13" x 4" x
10,5"
Weight: 20 lbs