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FOR SALE: Dynaco ST-410 200 watt power amplifier

Item #649367843
Info: Dynaco ST-410 200 watt power amplifier

Asking Price:
USD $400.00
Payment method: Cash, Paypal
Shipping weight: 22.68 (kg) Calculate Shipping
Condition: 9 - Excellent (?)
Date Posted: Jul 18, 17 8:26pm (PST)
Edited: Jul 18, 17 8:26pm
About Seller: foozlebop
Kirkwood, MO
United States
[other classified ads]
Product Brand: Dynaco
Product Model: ST-410
External Feedback: foozlebop (144)
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Description

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Functionally 100%. Cosmetically 9/10. Excellent 200 watts at 8Ω, 300 at 4Ω.



Description
The Dynaco Stereo 410 is a basic two channel power amplifier employing all silicon semiconductors. They include 38 transistors, 2 zener diodes, 24 diodes, and 3 thermal sensors.

The output circuitry is of the full complementary symmetry design. The entire amplifier, except for an input network, is direct coupled.

It's measured distortion levels approach the threshold of much laboratory test equipment, not only at the commonly specified full power ratings, but more importantly at very low power outputs as well.

This is the result of circuit techniques which eliminate any discernible crossover notch at low levels, and contributes to the Stereo 410's freedom from listening fatigue.

It's accurate, uncoloured sonics have been achieved on a wide variety of loudspeaker loads, including electrostatics and multiple drivers with complex crossovers.

The design of a superb power amplifier implies the necessity of several protection techniques for the amplifier, and for the speaker load. In addition to the AC line fuse, four separate B+ fuses are supplied. Electronic volt-amp limiting ensure safe operation of the output transistors, and an independent thermal cut-out for each output stage protects from high temperature.

A large radiating area for the heat fins, which are attached to an aluminium back panel, and cooled with a thermostatically operated two speed fan, form a highly efficient heat sink. Speaker fuses protect the load.

The Stereo 410 has been designed as two independent 200 watts (into 8 ohms) amplifying channels with a common power supply having a high degree of inherent regulation.

In addition, where higher power is required, an extra cost circuit board assembly will be made available to permit monophonic (bridge) operation for 8 and 16 ohm loads. An accessory kit is also planned at additional cost for two output meters and meter switching, which includes an alternative front panel.

Specifications
Power output: 200 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz



harmonic distortion: 0.25%

Damping factor: 30

Input sensitivity: 1.6V

Signal to noise ratio: 95dB

Speaker load impedance: 4Ω to 16Ω

Semiconductors: 38 x transistors, 2 x zener diodes, 24 x diodes, 3 x thermal sensors

Dimensions: 17 x 14.5 x 7.25 inches

Weight: 44lbs



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