Brenell ST200 spcecs

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Transistorised Tape Recorders
ST 200 (Two Track) ST 400 (Four Track)

Designed and produced by electronic and mechanical engineers
with unrivalled experience in producing some of the world's
finest tape recorders. the Brenell ST400 (Four track) and
ST 200 (Two track) translston'sed tape recorders lullll all the
essential requirements of fidelity in recording and playback
quality. ample playback power. reliability. easy operation. robust
construction. and smart styling.

The mechanically sound design of the tape transport (tape
deck) results in a completely reliable 'work horse capable of
continuous. efficient and silent operation over extended periods
without attention. Some Brenell decks are called upon for 24
hours a day operation.

Three high-quality outer rotor motors are used A heavy, dy~
namically balanced flywheel is driven at a constant speed by a
hysteresis synchronous motor. the speed of which is locked to

Specifications

Three Tape Speeds
7i. 3!. 7i ips.
Three Motors _
All outer rotor (Hysteresis Synchronous lor Capstan dnve).
Spool Sizes
Accommodates all spools up to ill" dia
Wow and Flutter
Measured on Gaumont Kaiee w/l meters:
Less than 0.00% at 7) ips.

0.1% at 3! ips.

0.12% at t} ips.
(The large. dynamically balanced flywheel driven by the H.S
motor ensures maintenance of these excellent figures)
Lockable Pause Mechanism
Newly designed. lever operated. Positive action with very light
operational pressure.
Auto Stop
End at tape (or tape breakage).
Place lndlcator
4 digit counter.
Back Tension
Adjustable for optimum pressure according to spool diameter
Heads
Erase-Double gap erase head to increase erasure efficiency.
Fl/PB-Low cross talk R/PB head suitable for both mono and
stereo recordings.
Inputs 2 a microphone
For 200 ohm impedance microphones. dynamic or ribbon.
Sensitivities 50 microvolts (overload better than 308).
2 a radio
impedance 220.000 ohms.
Sensitivities 40 mill-volts (overload better than 30d8).
Outputs 2 x l'lloFl
200 millivolts into 47.000 ohms load (for replay via Hi-Fi amplifier
systems).
2 1 Monitor
2 volts. Impedance 100 ohms.
(Suitable for use with low. medium and high impedance head-
phones and as a high level output for use with external amplifiers).
2 x Loudqreaksr
For driving external Loudspeakers of 15 ohms impedance (Inter-
nal speakers disconnected when plug is inserted).

the trequency of the mains supply and unaffected by voltage
fluctuations. Tape speeds of Ti". 31" and ii" are obtained
through noiseless gearing.
All levers and linkages are generously proportioned to be firm
and positive in operation. and for long maintenance-tree life.
Exceptional quality in terms of recording and playback charac-
teristics combined with a high power output potential have been
achieved by the use of advanced silicon transistor circuitry in
amplifying systems. which ensures consistent performance vir-
tually tree from inherent noise. The quasi-complementary output
stages produce a clean 6 watts RMS. equivalent to 5 watts music
power. per channel.

To meet the varying individual tastes. bass and treble controls

are provided. and at the request of many recording enthusiasts.

these controls are effective during both recording and playback.

A 'levei' position is indicated for use when recordin compensa-

tion is not required. Recording levels are indicate on two VU

meters.

Simplicity of operation has been achieved by using push-button

switcnes to select the following functions'

0 Record mono on upper track

. Record mono on lower track

0 Record stereo

. Monitor during mono recording (the other channel's amplifier
may be switched in to monitor the signal being recorded)

0 Replay a mono signal. either track. into both loudspeakers

0 Combine both tracks for reproduction by both loudspeakers

. Replay stereo tapes

Two pairs of input sockets are fitted. One. tor low level signals

i.e. as obtained from microphones, and another. for higher level

signals such as obtainable from radio receivers. Hi-Fi amplifiers.

etc.

Three pairs of output sockets make available the following

facilities:

0 Hi-Fi' Outputs for driving an external HiFidelity amplifier for
replay purposes (Signal compensated for llat' response)

0 Monitor Outputs for driving any impedance headphones
whilst recording or replaying. or for driving an external ampli-
fier requiring a higher signal level than that which is available
from the NH outlet.

0 'Loudspeakers Outputs for driving external loudspeakers of
15 ohms impedance (the internal loudspeakers are automa-
tically switched-off when external speakers are plugged into
circuit).

Power Outpu

An RMS output. from each amplifier. of 6 watts (Equivalent to an
8 watts per channel music rating).

Frequency Responses

7 ins t 2dBlOHztot4000Hz

3 ips 3. 2d840 HztottOOOHz

1; lot: 1 2dB40Hzto 5000Hz

Tone Controls

Separate Bass and Treble controls

Bass-14 dB to + 10 dB at 100 Hz

Treble-teas to + 5 dB at 10000 Hz

(Available for use on Record and Replay)

Signal to Noise Ratio

56 dB weighted.

Bias Frequency

100 KHZ.

Recordng Level indicators

Separate VU meter for each track.

Crosstalk Relectlon

Better than -60 dB - measured at 1000 Hz when recording
one track at full level (3% third harm) with HF bias on the
second track. After recording. the second track is reproduced.
Push Button Operation

Of Record and Replay amplitier functions. track selection and
monitoring facilities.

Cabinet

Wooden Cabinet. detachable lld. Finish-dark grey with Teak
front.

Weight

33 lbs.

Power Supplies

All models suitable for 1102£0 v 50 c/s.

60 c/s models to order.

Dimensions

17" x 151)" x 7"

(43 x 39 x18 cms)

The Branell Engineering Co. Ltd.
231-235 Liverpool Road

London N1

Telephone 01-607 8271