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Metaxas Audio Systems Ikarus User Manual

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K O S T A S
K O S T A S
I k a r u s
M E T A X A S
M E T A X A S
D E S I G N
D E S I G N

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Summary of Contents for Metaxas Audio Systems Ikarus

  • Page 1 I k a r u s K O S T A S K O S T A S M E T A X A S M E T A X A S D E S I G N D E S I G N...
  • Page 2 C o n t e n t s Aw a r d s & I n n o v a t i o n s 3 D e c a d e s o f “ H i - E n d ” L i s t e n i n g R e f e r e n c e D e s i g n P h i l o s o p h y O p e r a t i n g I n s t r u c t i o n s...
  • Page 3 A w a r d s & I n n o v a t i o n s Yo u a r e a b o u t t o l i s t e n t o a m p l i f i e r w h i c h h a s e v o l v e d f r o m o v e r 2 0 y e a r s...
  • Page 4 3 D e c a d e s o f H i - E n d : 1 9 8 0 ’s Ecstatic & Revelation Electrostatics Opulence Preamplifier Assembly Engraving Kostas Metaxas circa 1985 Soliloquy Monoblocks K O S T A S M E T A X A S D E S I G N...
  • Page 5 3 D e c a d e s o f H i - E n d : 1 9 9 0 ’s Apollo Speaker Stainless Steel Turret Punching Empress Full-range electrostatics Iraklis “on-test” PCB design EMPEROR Assembly using plastic-composite moulded frame Assembly Reference System circa 1992...
  • Page 6 3 D e c a d e s o f H i - E n d : 2 0 0 0 ’s Using technology borrowed from Aerospace and Formula 1, the new K o s t a s M e t a x a s Audio designs reflect the extraordinary advances that have been made recently in modelling and simulation software.
  • Page 7 L i s t e n i n g P h i l o s o p h y The only way to design state-of-the-art audio equipment is to have first-hand experience with the finest available recording equipment AND playback equipment. This is important for two reasons;...
  • Page 8 D e s i g n P h i l o s o p h y D e s i g n P h i l o s o p h y ULTRA-SHORT SIGNAL PATH : NO-WIRE DESIGN A prominent audio designer once described an amplifier as "A straight piece of wire with gain".
  • Page 9 D e s i g n P h i l o s o p h y LOW NOISE, HIGH SPEED VOLTAGE REGULATOR DESIGN. The most significant difference between VALVE and TRANSISTOR circuits is the amplifier/power supply interaction. In VALVE amplifier, the high voltages (from 200-400 Volts DC) result in a 50,000 to 100,000 Ohms value for resistor R.
  • Page 10 D e s i g n P h i l o s o p h y In a normal Transistor circuit, the 'phase distortion' is 0.5% as compared to 0.000008% for a normal VALVE circuit . f = 120 Hz = 500 mA If we monitor the V+ point of the transistor circuit using an oscilloscope, we = 0 µF...
  • Page 11 D e s i g n P h i l o s o p h y This is the STATIC performance of a voltage regulator which although important, does not affect the overall sound of the amplifier as much as the regulator's DYNAMIC performance which is influenced by the speed and 'open loop gain' of the regulator.
  • Page 12 D e s i g n P h i l o s o p h y If we go back to our basic circuit and analysed the performance of an I.C. positive voltage regulator (say a LM78LXX from NATIONAL SEMICONDUCTORS) it would have an output impedance at the pin of its output lead of around 0.2 Ohms from DC to 10kHz, and then an increase to 0.4 Ohms at 20kHz, then 4.0 Ohms at 1 MEGAHERTZ which clearly illustrates the open loop frequency...

  • Page 13: Protection Circuits

    O p e r a t i n g I n s t r u c t i o n s Steps for Connection 1. Ensure that the ON/OFF switch on the back panel is in the OFF position before connecting the amplifier into your system.
  • Page 14 X-raying the music, whilst at the same time, it preserves its spirit and its musicality.The Ikarus is in fact an excellent product, rich in personality, refined, easy to use, very pretty, but most of all, it is a high class product.
  • Page 15 W h a t t h e c r i t i c s s a y . . . "However I come to peace with myself by the sound of the IKARUS. The Australian neither oversearches for superfine details, nor omits any information. The IKARUS plainly serves the music.
  • Page 16 S p e c i f i c a t i o n s S p e c i f i c a t i o n s The IKARUS is based on our successful IRAKLIS power amplifier schematic with an additional 10dB increase in overall gain. It acts as FREQUENCY RESPONSE : DC - 5.0MHz (-3dB)
  • Page 17 C o n t r o l s & Fe a t u r e s K O S T A S M E T A X A S D E S I G N...

  • Page 18: If A Fuse Blows

    M a i n t e n a n c e IF A FUSE BLOWS TESTING 1. Check the 30 OHMS resistors in series with the BASE of the output transistors 1. Connect the + and - supply lines [at the FUSEHOLDERS or RECTIFIER DIODES] to an [R49,39,40,59] to ensure that they have not "open circuited"...
  • Page 19 M a i n t e n a n c e K O S T A S M E T A X A S D E S I G N...
  • Page 20 VOL_L VOL_R CE1 CE2 CE3 CE4 CE6 CE7 CE8 Title DE10 DE11 DE12 METAXAS AUDIO SYSTEMS IKARUS INTEGRATED AMPLIFIER Size Number Revision Date: 6-Jul-2003 Sheet of File: C:\MAS PROTEL\_ikarus_FINAL\ikarus_Final.ddb Drawn By: Kostas Metaxas K O S T A S...
  • Page 21 FAX:+613992 36481 IEC 801-2 ) P r o d u c t IEC 801-3 3V/m 20dB Metaxas Ikarus Integrated Amplifier IEC 801-4 1KV (AC lines) K O S T A S M E T A X A S D E S I G N...
  • Page 22 D e s i g n P h i l o s o p h y K O S T A S M E T A X A S D E S I G N...