What is stereo?




There are now two system of high fidelity, monophonic (monaural) and stereophonic. Monophonic is a system that starts from one microphone and is fed through a single high fidelity set. Stereophonic is a double system. Two separate microphones are placed at different sides of the orchestra and two different systems are used to keep the two signals or channels separated. Two separate speakers are used, placed on different sides of you room. Stereo is much like 3-D photography, two slightly different sound reach your ears giving you a new dimension in sound.




H.H. Scott '59





Dynaudio Confidence 3


As great truths are wont to do, the Confidence 3 is discrete about its qualities. We all know of much, much bigger loudspeakers 49.5 x 22.5 x 33.5 cm won't even impress a dwarf in very flat shoes - one of the reasons why the Confidence 3 has its personal dedicated stand). Or speakers with even more wallop (die-hard heavy metal fans will probably put on an aloof smile - at least until you turn the volume knob a little clockwise).But if true musical worth is what you're after, the Confidence 3 is in a class of its own. The tweeter is a special version of our justly famous Esotar T-330 D, which combines absolute brilliance with ultimate musicality - without the least bit of hardness. (You probably knew how it looks without realising it: the most reputed speakers in the world tend to be designed around this tweeter, a laudable step in the right direction.) With its ferrofluid-damped resonance and an aluminium voice coil which is lighter than a feather, it is not only at the outer frontier of the technologically feasible. It also puts an end to all diffuseness and tonal colouration.

Not in the least because the backwards-radiated energy of the Esotar (a democratic 50%), thanks to damping measures calculated by our famously reliable Danish engineers on high speed computers, is almost completely absorbed.

Which makes the Confidence 3 one of the few speakers that do not distract you with their own echo.
Technical Specification Confidence 3
Drivers:
Tweeter:  ESOTAR, 28 mm state-of-the-art. soft dome tweeter. Pure aluminium wire voice coil.
Woofer:  Powerful 20 cm with 75 mm pure aluminium wire voice coil. Neodymium magnet system. Die cast basket.
Features:
High quality polypropylene capacitors.
Only high quality air coils are used.
Special multi core air coils.
Sandwich enclosure.
Dedicated stand with spikes.
Sensitivity (2.83 V/1 m):  86 dB
Recommended Amp. Power:
Medium size rooms:  >65 watts
Large size rooms:  >125 watts
IEC Long Term Power Handling:  200 watts
Impedance, Nominal:  4 ohms
Impedance, (20 - 200 Hz):  4.4 - 10.7 ohms
Impedance, (200 - 20 kHz):  4.7 - 6.3 ohms
Impedance, Phase Shift (20 - 200 Hz):  -28.8° - +20.4°
Impedance, Phase Shift (200 - 20 kHz):  -3.8° - +8.3°
Impedance, HF (200 kHz):  5.3 ohms
Frequency Response (± 3 dB):  38 Hz - 28 kHz
Resonance Frequency:  35 Hz
Crossover:  2 way. Crossover is impedance corrected
Crossover Frequencies:  2600 Hz
Crossover Slope: 
Woofer: 6 dB/oct,
Tweeter: 6 dB/oct
Connection:  OCOS + WTB gold binding posts
Recommended Placing:  On the included stand
Internal Cabinet Volume:  19 litres
Bass Principle:  Bass reflex
Dimensions (W x H x L):  226 x 492.5 x 336 mm
Weight:  17 kg

Dynaudio Confidence 5

 

Technical Specification Confidence 5

Tweeter:  ESOTAR, 28 mm state-of-the-art. soft dome tweeter. Pure aluminium wire voice coil.
Midrange:  ESOTAR, 52 mm state-of-the-art. soft dome midrange. Pure aluminium wire voice coil.
Woofer:  20 cm with 100 mm pure aluminium wire voice.
Internal:  Compact 17 cm with 75 mm pure aluminium wire voice coil.
The crossover is impedance corrected both at the units as well as at the input. Internally wired with OCOS cable. High quality polypropylene capacitors. Only high quality air coils are used.
Special multi core air coils. Sandwich enclosure. Spikes included.
Sensitivity (2.83 V/1 m):  83 dB
Recommended Amp. Power:
Medium size rooms:  >120 watts
Large size rooms:  >240 watts
IEC Long Term Power Handling:  250 watts
Impedance, Nominal:  4 ohms
Impedance, (20 - 200 Hz):  4.6 - 9.2 ohms
Impedance, (200 - 20 kHz):  5.0 - 7.7 ohms
Impedance, Phase Shift (20 - 200 Hz):  -19.6° - +18.7°
Impedance, Phase Shift (200 - 20 kHz):  -5.1° - +15.1°
Impedance, HF (200 kHz):  5.4 ohms
Frequency Response (±3 dB):  47 Hz - 21 kHz
Resonance Frequency:  43 Hz
Crossover: 3  way
Crossover Frequencies:  1080 Hz + 4000 Hz
Crossover Slope: 
Woofer: 6 dB/oct,
Midrange: 6 dB/oct,
Tweeter: 6 dB/oct
Connection:  OCOS + WTB gold binding posts
Recommended Placing:  Floor, free standing
Internal Cabinet Volume: 2 0 + 22 litres
Bass Principle: Compound
Dimensions (W x H x L):  207 x 1195 x 375 mm
Weight:  41 kg

Meridian 207 Pro

 No ordinary Compact Disc Player
Meridian have earned their reputation as the leading designers of the world's finest sounding Campact Disc players. The 207-Pro is designed and made by these enthusiasts in England, and extensive research has been made in the evolution of this very advanced CD player. Every detail of the mechanical and electric engineering, from the floating cast subchassis to the electronic volume and comprehensive remote controls, is designed to make the 207-pro the finest Compact Dsic player. The Meridian 207-Pro est quality music playing system for your home - and it combines this formidable performance with effortless, yet comprehensive control of its functions. It has no equal.
A powerful feature of the Meridian 207-pro is the built-in preamplifier facilities. It can connect a tuner and tape directly to Meridian active loudspeakers, to give a simple system with the finest combination of performance and control available; or it may be used in a conventional music system.
This leaflet highlights some of the design features of the Meridian 207-pro, but only a visit to a Meridian dealer will convey a true impression of its distinctive quality.
 Meridian 207-Pro, why separate boxes?
It is no accident that the 207-Pro is arranged in two parts. One contains the precision-engineered motrised CD transport system and the system power supplies. The CD transport carries the single-beam laser pick-up assembly in a sprung die-cast subchassis, and runs on precision stainless steel guides. The assembly moves out at the touch of a switch on the front panel. This whole mechanism is housed in a heavy aluminium tube and when the plate-glass door slides shut against its soft surround, the spinning Compact Disc is acoustically and mechanically isolated. This aspect of the construction adds a lot to the sound quality of the player and yields the convenience of front-loading without the loss of quality that normally results. The digital signal is passed via a single cable to the electronics unit.
 The 207 provides a unique conbination of quality and facility. The very highest standards of audio performance are combined witha truly comprehensive control system, resulting in a product which has received worldwide acclaim. Meridian now provide a complementary range of products to the 207 including 201 Preamplifier,, 205 Power Amplifier, 204 Tuner Timer, 209 remote Control and a range of 3 Active Loudspeaker Systems.
The 207 has the following new features:
New Meridian designed servo circuits for improved playability.
2 box construction which provides acoustic and electronic isolation of circuits.
High mass 3 point sorbothane suspension system for better sound.
New Meridian designed microprocessor control functions for simpler operation.
Inputs for radio, tape and LP record deck with switchable cartridge level matching
High energy power supplies for better control of audio circuits resulting in improved sound.
Full function remote control system.
Specifications
Inputs Compact Disc:
Radio :  500 mV/10 k Ω
Tape:  500 mV/10 k Ω
Outputs
Fixed :  2V RMS / 12 Ω
Variable :  4 V RMS / 47 Ω
Tape :  500 mV / 47 k Ω
Distortion:  less than 0,004%
Noise:  better than -90 dB
Conversion:  4 x oversampling at 14 bits
Precision:  15,5 bits min
Displays:  Track/disc/total/remaining time/selecte track/track playing/error correction
Dimensions (W x H x D):  160 x 90 x 310 mm ( 6,3" x 3,6" x 12,2")
Weight:  8,5 kg
Finish:  Black textured enamel and glass

Sansui LM-220


The LM Series - Exclusive-design Linear Motion tweeter driver, giving much improved transient response, and the innovative muti-radiation baffle - to create more accurate sound image resolution - makes the speaker systems really astounding performers. Reletively small in size, they deliver room-filling natural sound, greater stereo perspective to re-create the full musical presence in your home.
For full high fidelity music reproduction, your speaker system must be good; no matter how broad the frequency range reproduced by your power amplifier, no matter how low its distortion, you'll never get more than your where you listen to music.
Our engineers have been working for many years to design speakers which perform well even in the acoustics (often poor) of normal living rooms. They've developed a range of speakers matched to varying output levels in driver power, for optimium quality sound, full and natural, under differing conditions.
Sansui engineers aim beyond the mechanical test results from instrumentation readings. They know there are clear-cut subjective differences; the ultimate test of any speaker system is listening. They combine sophisticated engineering skills with the sensitive requirements of listening to music, to produce this Sansui series. These incorporate advanced state-of-the-art. Electronics, and realistic listening criteria in their design.

Sansui offers the innovative LM (Linear Motion) speaker systems, large, complex systems - combining massive woofers with several mid-range and tweeters - and full fidelity acoustic suspension systems, for full concert-hall and realism in any size space.
You'll find Sansui speaker systems - delivering rich, realistic sound - to satisfy exactly your needs; power capacity, appearance, sound quality in your music-listening environment and price. There's no reason to settle for less than Sansui.

SPECIFICATIONS LM-220
Speakers:
Woofer: 205 mm (8-1/16") Cone Type
Tweeter: 65 mm (2-8/16") Cone Type
Power Rating:  45 watts (peak)
Impedance:  8 ohms
Sensitivity:  91 dB/W (New JIS at 1 m)
Frequency Range:  32 to 20,000 Hz
Crossover Network:  2-way 12 dB/oct L-C Parallel Type
Crossover Frequency:  2,000 Hz
Finish:  Simulated wood grain
Dimensions (W x H x D):  278 x 620 x 150 mm (11" x 24-7/16" x 9-7/8")
Weight:  12 kg (26,5 lbs) net, 13,6 kg (30 lbs) packed