Dynaco FM-5 Stereo Tuner

Thanks to Barry MacDonald for the FM-5 pics!

View the
IF/audio schematic,
front end schematic,
alignment procedure,
parts list
for the FM-5. Sorry about the mediocre scans; I hope to provide better copies as soon as I get a real manual for the unit.



Description:

Specifications:

IHF Sensitivity (noise and distortion down 30 dB @ 100% modulation): 1.75 µV

Input required for 40 dB S/N @ 100% modulation: 2.0 µV

Input required for 50 dB S/N @ 100% modulation: 5.0 µV

Frequency Response before de-emphasis: 30 Hz to2 KHz, ±1 dB

De-emphasis time-constant: 75 µSec

Frequency Response: 20 Hz to 15 KHz ±1 dB

Harmonic Distortion and IM Distortion @ 100% modulation:

Mono - 0.5% (0.25% typical).
Stereo - 0.9% (0.5% typical).

Capture Ratio: 1.5 dB.

Muting threshold: 4 µV.

Output @ 100% modulation: 2 volts.

Ultimate signal to noise ratio: 65 dB @ 100% modulation.

Drift: less than 0.02%.

Selectivity: 65 dB alternate channel.

AM suppression: 58 dB.

Stereo switching threshold: 4 µV.

Stereo Separation:

@ 1000 Hz, 40 dB.
@ 50 Hz, 30 dB.
@ 10 KHz, 30 dB.

19 KHz and 38 KHz subcarrier suppression: 50 dB minimum.

67 KHz SCA carrier suppression: 80 dB minimum.

Antenna input: 72 ohm unbalanced and 300 ohm balanced.

Gain from Auxiliary Input: 28 dB.

Front panel controls: Power/Volume; Tuning; Circuit Mode (off, muting, muting and Dynatune™); Mono, Stereo Filter, Stereo; Output (FM, Auxiliary).

Dimensions: 13-1/2" x 9" x 4-1/4" high.

Shipping weight: 11 lbs.

Power consumption: 10 watts, 120V or 240V, 50/60 Hz AC.

PPM-5 Phono Preamp Module:

Signal/Noise Ratio: 75 dB

Gain: 46 dB

Harmonic Distortion: 0.05%, 20-20,000 Hz @ 2V output

IM Distortion: 0.05% @ 2V output

Input Sensitivity: 5 mV for 1V output

Output Impedance: 1000 ohms

Price: $29.95

FM-5 Designed by:

Wade Burns, Hans Frank, Erno Borbely (Dynatune™ patent), Sid Lidz

Year Introduced:

1971

Price:

$199.00 kit
$319.00 assembled

Comments:

Dynaco's first transistorized tuner. Innovative design highlighted by the Dynatune™ auto-tuning circuit, and a switchable auxiliary input which could be turned into a phono input with the addition of the (mythical?) PPM-5 phono preamp module.



This page created and maintained by Greg Dunn.
Copyright © 2000,2001 Greg Dunn