Tandberg TPA 3026 A Brochure

Page 1

Power Amplifier TPA 3026 A

Technical Paper

AMPLIFIER adopted from the "state of
the art power amplifier

Tandberg 3016A

combined With a very rugged
design and ability to drive
difficult loads. The 3026A
includes many features

Tandberg Power Amplifier
3026A is a 2 x150 W audio
phile power amplifier With
high current capacity

m iw, A'vxuru mu.

Component
selection

Well
dimensioned
power circuits

High current
capability

.i u...»

All components used in
3026A are selected for
maxrmum accuracy and best
audio performance.

Capacitors in the signal paths
are selected polypropylene
types. The use of high

quality polypropylene
capacitors greatly improves
audible performance
compared to other
commonly used capacitors.
Improvement relates to
openness. resolution and
purity.

All resistors are metal
film types for high accuracy
and long term stability.

Active elements are discrete
selected types throughout
the entire circuitry.

A major feature of this new
amplifier is a well
dimensioned high current
power supplve A massive
torodial transformer reduces
voltage modulations uSUally

resulting in unstable
perspective and lack of
control in the bass area.

The high current design
guarantees superior

performance even under the
most dynamic signal
conditions, no matter what
type of loudspeaker used.

Output devices are
MOSFET's and have the
advantage of high speed and
inherent current sharing.

The use of MOSFETs allows
high current to pass Without

these limitations presented
in bi-polar dewces and no
protection is needed -
assuring a deep and well
controlled bass, as well as
striking reproduction of
transients.

The 3026A offers a peak
current of 45 A.

Page 2

Zero Feedback

Feed forward
driver design

Thermic
Servo Loop

The Zero Feedback design
of 3026A greatly increases
the signal capacity of the
active stagest

Usually feedback is applied
to reduce overall distortion
and linearity errors.

Our unique design offers

all the advantages of zero
feedback without any
sacrifice in linearity or raised
distortion levels.

The feed forward circuitry
eliminates the tin-resistance
in the output transistors

This results in extremely
low output impedance 7

all through the audio hand
up to several hundred kHz
- assuring full control over

all elements in the speakers.

This results in highly detailed
and accurate midrange and
high-end - hardly matched
by other amplifier designst

To control DC stability
servo loops are required,
Usually this is done
electronically with a lowpass
filter and a negative feedback
loop injecting its control

signals into the audio path.
This will degrade sound
quality.

The Tandberg Thermic
Servo Loop controls, in a

unique way, by means of
temperature to achieve
0 DC - with absolute no
interference to the audio
Signalr

Technical Data

Tandberg Power Amplifier
3026A

Technical Data according to
IR F~A7202, 1973

Secondary Disclosures

Power Requirements:
Power Consumption:

Dimension-z

Continuous Average Puwu Output:
Freon-nay Respome:

A-wcignind Signil~l0>Nuiie Ratio:

is ohm 20 - 20,000 Hz, THD >0.02%l

"Ref. 1 W/B ohm)

Output imocndmoe (20 - 20,000 Hz):

Widehand Damping Factor:

Low Frequency Dlmping Factor:
SMPTE Intermudulation Distortion:
IHF Intermoduiation Distortion:
Transient Overload Recovery Time:

Sensitivity:

Pulse Power:

l1Wl
(150 W)

115/230 W 110%, 50/60 Hz
1 10 - 830 W

Width: 17 1/8" (43.5 CI")
Depth: 13 3/4" (35.0 cm)
Height: 51/4" (13.0 cm)
Weiyit: 31.4 lbs (14.25 kg]
2 x 150 W
20 -- 20,000 Hz + 13/7 Oil dB
96 dB

< 0.01 ohm

> 800

> 2500

0.02%

0.02%

lm measureable

150mV
1.5V

2000 Win Lo ohm

Specifications are subject to change for further improvement without HOUSE.

YOUR AUTHORIZED TAN DBERG REPRESENTATIVE:

Part No. 601996 Printed in Norway by Reclumo A/S © Tandberg Audio A.s/Tekniske Forianere As 1956

SUBSIDIARY:

Tandberg of America, Inc.

1 Labriola Court
Armonk

N.Y. 10504
U.S.A,

Telephone
(914) 213 - 9150

HEADQUARTER:

Tandberg Audio A.s
Fetveien 1
Kieller 7 Norway

Postal addreu
P,O, 80x 49
N-2007 Kieller
Norway

Telephone
(472) 71 53 61
Telex

71386 tend n

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