Dynaco Dynakit PAS 2 Service Manual

Page 1

SERIAL NUMBER
70410'?4
This number must be men~

Horned in a communica»
tions concerning Dynakit.

INSTRUCTIONS FOR THE ASSEMBLY OF

DYNAKIT STEREO PREAMPLIFIER
MODEL PAS~2

Price 337.00

US. PATENT PENDING 04607

DYNA COMPANY ~ ~: _ BMW"
» W 1 , PHILADELPHIA 4. PA-

Page 2

SPECIFICATIONS

Inputs:

Outputs:

Controls:

Tone Control Range:

Distortion:

Response:

Transient performance:

Hum (and noise:

Gain:

Impedance:

Tubes:

3 stereo low level: RIAA phone,
NAB tape head ( 71/2"), Special"
(optional second phOno, micro
phone, etc). 4 stereo high level:
FM~AM, FM~MuItiplex, Spare,
Tape

Tape output. Audio output,

Selector, Volume, Balance, Blend,
Individual Treble and Bass for each
channel, Tape Monitor, Loudness,
Scratch Filter, Power,

: 14 db at 20,000 cycles : 20 db
at 20 cycles

Less than 0.05% intermodulation at
suflicient output to drive any ampli-
fier. Distortion does not increase at
lower settings of volume control.

,Harmonic distortion below the

measurement capabilitiw of ream
lar commercial grade, test Equip-
menti

:9: .5 db )0 cps to 40 kc. Response
not affected by position of volume
control.

Passes square waves without ringing
and with minimum defamation
from 20 cps to 20,000 cps. No over-
shoot or bounce on pulse type sig-
nals Instantaneous recovery from
overload.

2 microvolt equivalent noise on
RIAA. 74 db below level of 10 milli-
volt signal.

60 db at 1,000 cycles on RIAA; 60
db on Tape Head; 20 db on Radio
and other high level inputs.

Output impedance 1,000 ohms; ter-
minating impedance 500,000 ohms
or higher (includes provision for
other terminations), Low level
input impedance- 50,000 ohms; high

level input impedance 250,000 ohms.

4 12AX7/ECC-83; 1 12x4; 1 sale
nium stack.

IN blaTDFflKfllfi

o us +20

aesPONSEi m

40

20 ' van low

is '
e naautucv, cps

Contours of the tone controls.

5

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a x
rnsqumm, KP:

Equalization.

limb mm

a

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launchers

Harmonic distortion percentage.

.a5 .Ho

. 2vav4v
nuTFWNOLr:

[M distortion.

10 KC square wave from Dynakil
(below) is much like original

(above).