Amplifiers > poweramplifier Monoblock



Faq
History

09/2002
Presentation of the mono poweramplifier Monoblock at the Top Audio & Video Show in Milano

2005
Upgrade first 10W in class A

Finishes
  • Classic Silver
  • Classic Black
  • Silver Satin
  • Black Satin
  • Concerto
Specifications
Output power
@ 8 Ohms
@ 4 Ohms
Continious RMS watts
100 Watts
200 Watts
Bandwidth 0.1Hz to 120kHz, -3dB
THD and Noise Less than 0.1% at rated power
Damping factor Greater than 100, 20 Hz to 20 kHz, 8 ohms
Overall gain & sensitivity 26dB
Input Impedance
Balanced
Unbalanced
 
36k
47k
Absolute phase normal
Power Consumption 20 watts standby
500 watts maximum
Inputs

Balanced
Unbalanced
User selectable on back panel
1 per channek(XLR)
1 per channel (RCA)
Outputs 1 pair binding posts
Dimensions 8.5 x 21.2 x 4.7 in
21,5 x 54 x 12 cm
Weight (with envelop) 40lbs / 18 Kg
 

Poweramplifier Monoblock (MB)

 
 
Power Amplifier Monoblock

The Monoblock Amplifier is the right solution for those looking for a trasparent power amplifier, capable to drive low efficiency and impedance complex loudspeakers, with fast transient and a big power handling.

The first impression are two beautiful metal blocks, well proportioned and refined with a very compact look.
A look inside will show a rational building; everything is at the right place.
The unit is designed to transfer the input signal with the highest possible linearity , amplified in current and voltage.
The big power handling capability, on very difficult or low impedance load, is achieved from a 500VA toroidal transformer with a capacitor bank of 80.000uF, the power reserve to reproduce the musical transient in a absolutely realistic way.
Four pair of fast power bipolar transistor MJL3281/1302 in a complementary output stage, present in many famous amplifier designs, can drive high peak current safely.
The output stage is based on a triple darlington configuration, wich is greatly linear in current amplification, so we convert the voltage input signal in a current signal before to drive the output stage.
This configuration allows a very high intrinsic linearity so we can design the unit with a very low feedback.
Moreover, to increase the linearity at the low level signal, the output stage is biased to give the first 10W /8Ohm in A-class; this solution is foundamental to achieve the correct harmonic reproduction of a low level signal.
This Monoblock is a 100W/8Ohm power unit and double the power on 4 Ohm until 390W on 2Ohm; a big power reserve that allows to drive any loudspeakers even in a big room.
This unit is equipped with the finest connectors production from Neutrik and WBT and can be connected at the Linestage with a trigger link.

 

Features
  • High rigidity metal frame
  • Shielded high current power supply
  • 500VA toroidal transformer
  • 80.000uF capacitor bank
  • Rubber insulated aluminium feet
  • WBT connector on unbalanced input
  • Neutrik connector on balanced input
  • Fully discrete analogue design
  • Onsemi MJL1302/3281 power transistor
  • Low overall feedback
  • High stability on capacitive loads
  • White Gold cable on output connection

Images
Gallery

power amplifiers - outside
Outside >

poweramplifier Monoblock - inside
Inside >

 
 

   
© North Star Design Srl. - San Giuliano Terme (PI), ITALY - VAT N° / P.I. IT 01414910503 - tel / fax: +39 050 859166 - email:info@northstar.it