B&W DM 560

 

DM560  Stand-mount/Bookshelf loudspeaker system

Product Summary

The two way front vented system encompasses the same design technology of the DM550 with its rigid one-piece baffle construction, but offers a noticeable extended bass – thanks to a bigger 8in bass/midrange driver and increased enclosure size.

 

Technical highlights

B&W's Tweeter technology ensures that the sound remains focused and time sensitive and that the stereo image is presented with unparalleled three dimensional accuracy. The cabinets feature a specially designed high density front baffle which achieves almost Matrix-like stability in strengthening overall enclosure construction. The bevel edges of the front moulding reduce diffraction and improve dispersion. The crossover components use heavy gauge wire throughout and new drivers guarantee not only high reliability but ensure that top specifications are met.

Specyfications

Drive Units 560

1 x 26 mm high-frequency with aluminium dome, 26 mm coil on aluminium dome former, wound with polymide resin and heat cured

1 x 200 mm bass/midrange with composite short fibre cone, 26 mm coil on high temperature former, wound with polymide resin and heat cured

Frequency Response:  65 Hz – 20 kHz ±2.5 dB on reference axis

Sensitivity:  90 dB spl(2.83V 1m)

Nominal Impedance:  8Ω

Power Handling:  10 W – 75 W into 8Ω on unclipped programme

Dimensions (W x H x D):  236 x 490 x 302 mm

Finish:  Black ash or walnut vinyl

B&W DM 570

DM570  Stand-mount/Bookshelf loudspeaker system

Product Summary

The DM570 construction consists of a one piece moulded baffle design – in which components are exactly appropriate to the size and expected performance. A performance guided to perfection through the use of CAD, finite element analysis and laser interferometry techniques. The two-way front vented system has a specially designed 8in bass/midrange driver of the highest sophistication incorporating a high temperature Kapton voice coil which effectively winds up to increase power handling.

 

Technical highlights

B&W's Tweeter technology ensures that the sound remains focused and time sensitive and that the stereo image is presented with unparalleled three dimensional accuracy. The cabinets feature a specially designed high density front baffle which achieves almost Matrix-like stability in strengthening overall enclosure construction. The bevel edges of the front moulding reduce diffraction and improve dispersion. The crossover components use heavy gauge wire throughout and new drivers guarantee not only high reliability but ensure that top specifications are met.

Specifications

Drive Units 570

1 x 26 mm high-frequency with aluminium dome, 26 mm coil on aluminium dome former, wound with polymide resin and heat cured

1 x 200 mm bass/midrange with composite short fibre cone, 3 0mm coil onKapton former, wound with polymide resin and heat cured

Frequency Response:  55 Hz – 20 kHz ±2.5 dB on reference axis

Sensitivity:  91 dB spl(2.83V 1m)

Nominal Impedance:  8Ω

Power Handling:  10 W – 120 W into 8 Ω on unclipped programme

Dimensions (W x H x D):  236 x 634 x 302 mm

Finish:  Black ash or walnut vinyl

McIntosh MX 117

 

 

The MX 117 AM-FM Stereo Tuner-Preamplifier concept is a total Mclntosh master control center that allows you to select the matching Mclntosh power amplifier for your individual requirements. All needed inputs such as two record players, two tape recorders and auxiliary can be accommodated, along with the built-in AM-FM stereo tuner. The advanced circuits and performance features of the Mclntosh MX 117 make it an ideal and especially convenient solution for the most discriminating stereo listener.

FM AFL AUTOMATIC FREQUENCY LOCK

The Automatic Frequency Lock is a patented Mclntosh circuit that activates when you tune to the center frequency of an FM station. A varacter diode fine tunes the tuner with a correction voltage from the AFL circuit. When the center ON -station vertical LED indicator lights, the AFL circuit is in operation and the tuner stays locked to the signal. There will be no drift from this accurate tuning, insuring minimum distortion and best overall FM performance.

2. ELECTRONIC FET ANALOG INPUT SWITCHING

All critical input switching is done electronically using field effect transistor analog switches. The front panel selector simply switches small amounts of control DC voltage which turn the FET analog switches on or off. Since the FET analog switches are located near the input jacks, the length of interconnecting leads is much shorter. This design eliminates switching noise as well as frequency loss caused by the longer signal leads necessary in conventional circuits.

3. HEADPHONE—OUTPUT AMPLIFIER

The built-in headphone amplifier is capable of driving a pair of dynamic headphones with less than 0.02% harmonic distortion. Because of its extremely low distortion and power capability, it is also the main preamplifier output.

4. TRI-FREQUENCY PROGRAM EQUALIZER

Three separate controls allow the balance and response of musical information to be adjusted with far more flexibility than with conventional tone controls. The center frequencies of the controls are 30 Hz, 750 Hz and 10 kHz. Plus and minus 12 dB of control is available. Use of the program equalizer controls does not affect in the slightest the low noise, low distortion performance of the tuner-preamplifier. When the equalizer controls are in their center detent or flat position, their action is neutral and response of the tuner-preamplifier is absolutely flat.

5. TRUE LOUDNESS COMPENSATION

The MX 117 active circuit loudness control is continuously variable with constant midrange gain and operates independently of the volume control. The loudness contour is accurately modeled after the Fletcher Munson family of "Equal Loudness" curves. Use of this control restores proper perceived frequency response at even the softest listening levels.

5. TRUE LOUDNESS COMPENSATION

The MX 117 active circuit loudness control is continuously variable with constant midrange gain and operates independently of the volume control. The loudness contour is accurately modeled after the Fletcher Munson family of "Equal Loudness" curves. Use of this control restores proper perceived frequency response at even the softest listening levels.

5. TRUE LOUDNESS COMPENSATION

The MX 117 active circuit loudness control is continuously variable with constant midrange gain and operates independently of the volume control. The loudness contour is accurately modeled after the Fletcher Munson family of "Equal Loudness" curves. Use of this control restores proper perceived frequency response at even the softest listening levels.

6. PRECISION TRACKING VOLUME CONTROL

The volume control manufactured for Mclntosh Laboratory is a step attenuator which has tracking accuracy within 1 dB throughout its entire range. Such extremely accurate matching is achieved through electronically controlled trimming of the resistance material deposited on pairs of miniature printed circuits. Tracking accuracy and quiet performance are permanently maintained.

Use does not affect performance as in ordinary volume controls.

7. ELECTRONIC FET RF SELECTIVITY SWITCHING

A back panel switch gives additional FM RF selectivity for best performance in areas with extremel strong station signal strengths. This switch feeds a control DC voltage to PIN semiconductor diodes which electronically perform the RF switching functions.

AUTOMATIC STEREO NOISE SUPPRESSION

A new third generation phase locked loop stereo decoder incorporates a unique variable stereo separation - noise reduction control circuit. This circuit operates from the IF amplifier signa strength detector. When listening to weak or distant FM stations, optimum stereo separation and signal to noise ratio is automatically provided. You get a smooth transition between stereo and mono depending on the prevailing signal conditions. This means that with the Mclntosh MX 117 you always get the most noise-free reception of weaker stereo signals. Since this circuit automaticallyadjusts in varying amounts, you never hearthe abrupt switching present in conventional circuits.

UNIQUE AM TUNER SECTION

The AM circuit in the MX 117 is unique in designfor a superheterodyne tuner. The AM RF amplifier circuit has constant selectivity, constant sensitivity and high image rejection across the complete AM band. In addition there is no loss of audio frequency response at the low end of the band. No conventional AM circuit can offer all these features simultaneously. These advanced AM performance characteristics of the MX 117 bring about a re-discovery of AM listening.

INTEGRATED CIRCUIT OPERATIONAL AMPLIFIERS

Both the magnetic phono and the equalizer amplifierstages utilize new high technology integrated circuit operational amplifiers. Noise factors are incredibly low and distortion levels are at or below the limits of the best present day test equipment.

 

PREAMP SECTION

FREQUENCY RESPONSE:  + 0 - 0.5 db from 20 Hz to 20 kHz

RATED OUT PUT LEVELS

Main Out : 2.5V

Line Out : 1.25V

Headphone : 750mV

Tape Out : 250mV

DISTORTION:  0.02% maximum at 2.5V output from 20 Hz to 20 kHz

INPUT SENSITIVITY AND GAIN

Input to Main Out

Phone 1 and 2:  2.2mV in for 2.5V out (61.1 dB gain at 1 kHz)

AUX, Tape 1 and 2: 250mV in for 2.5V out (20 dB gain at 1 kHz)

Input to Line Out

Phono 1 and 2 : 2.2mV in for 1.25V out (55 dB gain at 1 kHz)

AUX, Tape 1 and 2 : 250mV in for 1.25V out (14 dB gain at 1 kHz)

Input to Headphone Out

Phono 1 and 2:  2.2mV in for 750mV out (50.7 dB gain at 1 kHz)

AUX, Tape 1 and 2 250mV in for 750mV out (9.5 dB gain at 1 kHz)

Input to Tape Out

Phono 1 and 2:  2.2mV in for 250mV out (41.1 dB gain at 1 kHz)

AUX, Tape 1 and 2:  25pmV in for 250mV out (0 dB gain at 1 kHz)

SIGNAL TO NOISE

Phono 1 and 2:  -90 dB IHF A-weighted, below 10mV input -80 dB unweighted, below 10mV input

AUX, Tape 1 and 2:  - 100 dB IHF A-weighted, below 250mV input

-90 dB unweighted, below 250mV input

INPUT IMPEDANCE

Phono 1 and 2:  47kl2 and 50pF

AUX, Tape 1 and 2:  47kohm

OUTPUT IMPEDANCE

Main Out:  less than 100ohm (to operate into 5kohm or greater)

Line Out:  600ohm (to operate into a 600ohm line)

Headphone:   8ohm

Tape Out:  less than 200ohm (to operate into 5kohm or greater)

EQUALIZER CONTROL RESPONSE

Center Frequencies :  30, 750, and 10 kh

Boosr and Cut:  ± 12 dB

AM SECTION

SENSITIVITY.  75μV IHF with external antenna

SIGNAL TO NOISE RATIO:  45 dB minimum IHF or 55 dB at 100% modulation

FREQUENCY RESPONSE:  + 0 ~ 6 dB from 20 Hz to 3500 Hz

HARMONIC DISTORTION:  0.8% maximum at 30% modulation

ADJACENT CHANNEL SENSITIVITY:  30 dB minimum IHF

IMAGE REJECTION:  65 dB minimum from 540 kHz to 1600 kHz

FM SECTION

USABLE SENSITIVITY:  2μV (11.2dBf) IHF

QUIETING SENSITIVITY:  5μV(19.1dBf) IHF -50dB(Mono);  50μV (39.5dBf) IHF -50 dB (Stereo)

SIGNAL TO NOISE RATIO  :70 dB IHF minimum both Mono and Stereo

HARMONIC DISTORTION

0.18% (Mono) IHF maximum

0.38% (Stereo) IHF maximum

ALTERNATE CHANNEL SELECTIVITY:  75 dB IHF minimum

IMAGE REJECTION:  100 dB IHF minimum

STEREO SEPARATION:  45 dB minimum at 1 kHz

GENERAL INFORMATION

POWER REQUIREMENT:  120 Volts 50/60 Hz, 45 Watts

SEMI CONDUCTOR COMPLEMENT

24 Bipolar Transistors

18 Field Effect Transistors

62 Diodes

24 Integrated Circuits

MECHANICAL

MECHANICAL INFORMATION

SIZE

Front panel measures 16 inches wide (40.6 cm) by 5 7/16 inches high (13.8 cm). Chassis measures 14 3/4 inches wide (37.5 cm) by 4 13/16 inches high (12.2 cm) by 13 inches deep (33 cm), including connectors. Knob clearance required is 1 1/4 inches (3.2 cm) in front of mounting panel.

FINISH:

Front panel is anodized gold and black with special  gold/teal nomenclature illumination. Chassis is black.

MOUNTING::  Exclusive Mclntosh developed professional PANLOC.

WEIGHT::  24 pounds (10.9 kg) net, 36 pounds (16.3 kg) in shipping carton.

Altec Lansing 605B

ALTEC 605B DUPLEX

Altec ''Duplex'' Loudspeakers are two-way transducers, consisting of independent high and low frequency units, mounted within one physical frame, to provide the quality advantages of a professional two-way speaker system in compact form. The efficiency, power handling capacity, and extremely wide response of these units make them an ideal choice for both single-source (high-level) and distributed(low-level) sound system. The 605B provides minimal distortion, wide range, smooth response, and excellent distribution characteristics to assure perfect audio reproduction of speech and music for all PA, sound reinforcement or background music installations and for high quality monitoring of broadcast and recording material.

Each 605B 'Duplex' Loudspeaker is supplied with a professional-type, fullsection dividing network, incorporating a high-frequency balance control for correctly matching or adjusting to the acoustical characteristics of individual listening areas.

The 605B 'Duplex' - one of the finest 15-inch, full-range loudspeakers in use throughout the audio industry - has, for years, been the accepted standard monitor loudspeakers of major broadcast and recording studios, The 605B covers the audio range from 20 to 20,000 Hz. The exceptional uniformity of response is due, in part, to the large, edge-wound voice coils (aluminum in the high-frequency section and copper in the low-frequency section), operating in magnetic gaps of high flux density, produced by independent oversize Alnico V magnets. The large 2¼'' aluminum high-frequency diaphragm has tangential compliance, and is coupled to a heavy, high-impact, compression-molded multicellular horn. It provides outstanding sound distribution and clarity of the higher musical harmonics - without annoying resonant 'peaks' or 'hollows' which produce undesirable sound cancellation. A combination of phasing plug and pole piece, precision-machined with two acoustically exponential annular slots, assures correct phase relationship between the center and outer edge of the HF diaphragm. The high compliance low-frequency cone, driven by the large 3'' copper voice coil, reproduces the lowest fundamental bass tones without frequency doubling of 'bottoming' - even at full rated power.

Specifications

Power: 35 watts (50 watts, peak)

Frequency Response: 20 – 20,000 hZ

Pressure Sensitivity: 97 dB SPL at 4 ft from watt (equal to EIA rating of 50dB at 30' from 1 mw or 112,4 dB 30' from 1 mw) or 112,4 dB SPL at 4 ft from 35 watts

Impedance: 16 ohms

Cone Resonance: 25 Hz

Voice Coil Diameters: LF : 3 inches, HF : 1¾ inches

Horizontal Distribution: 90°

Vertical Distribution: 40°

Magnet Type: Alnico V

Weight: LF : 2,25 pounds

HF : 0,531 pound

Structure Weight: LF : 15.13 pounds

HF : 5 pounds

Flux: LF : 11,000 Gauss

HF : 14,000 Gauss

Crossover Network: 1,600 Hz full-section (furnished with loudspeaker)

Terminals: Binding Post (4)

Diameter: 15-5/16 inches

Mounting Data: Baffle Opening 13-5/8inchs, Mtg. Bolt. Cntrs.: 8 holes equally

spaced on 14-9/16 diameter circle

Depth: 19 inches

Weight: 28 pounds

Altec Lansing 620B

 

The Altec 620B Speaker Cabinet is a smartly styled , furniture-type, bassreflex enclosure designed for front mounting a 15'' loe-frequency or two-way coaxial loudspeakers. The 620B provides correct baffling and mounting for quality monitor installations. The cabinet's appearance is enhanced by an appealing, natural, hand-rubbed oil finish on rift-cut oak, and an attractive, snap-on, removable grille assembly.

Architect's and Engineer's Specifications

The speaker cabinet shall be the bass reflex type, and shall provide front mounting for 15'' speakers onl. The cabinet shall meet the following criteria. Grille assembly, snap-on. Grille cloth, brown. Internal volue, 9,0 ft³. Dimensions, 40'' x 26'' x 18'' (HxWxD). Weight, 104 pounds. Finish, handrubbed oil on rift-cut oak.

Specifications

Type: Bass reflex enclosure

Pressure Sensitivity: 100 dB SPL at 4' with Altec 604-8 K loudspeaker when measured on axis with 1 watt input of band-limited pink noise from 100 to 10,000 Hz and calculated to 4' equivalent (Ref.: 0dB = 0,0002 dyne/cm²

Speaker Accommodations: 15'', front-mounted

Internal Volume: 9,0 ft³

Dimensions (W x H x D): 660 x 1016 x 457 mm (26'' x 40'' x 18'')

Weight: 47,2 kg (104 pounds), enclosure only

Finish: Hand-rubbed oil on rift-cut oak. Brown grille cloth

Recommended Altec Speaker: 605B Duplex Loudspeaker

EMT 938 Broadcast Disk Reproducer

 EMT 938 Features

Robust Tone Arm

Simple and Rational Operation

High Immunity to Vibrations with Effective Shock Absorber System

Direct Drive with Quick Start

Three Speedes: 33, 45, 78 rpm

High-Quality Amplifiers

The mains power switch, speed selector switch, Start/Stop button, and button for the tone arm lift comprise the operating elements of the EMT 938 BDR (Broadcast Disk Reproducer). Both Start and  i.e., run-up of the turntable platter and platter braking, are accomplished in less than 500 milliseconds. The unit cantherefore be started precisely at any syllable in the groove.

To facilitate locating a desired point on the record (such as the beginning of the modulation, or a specific cueing point), theplatter rim extends 2,4 cm beyond the edge of an LP, enabling the record platter to be turned back and forth by hand. A phone jack is provided for connecting stereo headphones.

 The EMT 938 BDR is now equiped with a synchronization indicator, which illuminates as soon as the started turntable platter has reached the selected speed.

 The front view shows the level controls of the audio amplifiers. The insertion of a pre-preamplifier for moving coil pickup cartridges is indicated by a coloured dot.

Jacks for external connections are located on the rear side of the EMT 938 BDR. Printed legends identify the functions of the jacks.

Specifications

Deck

Turntable Diameter:  330 mm

Turntable Speeds:  78 rpm, 45 rpm, 33 1/3 rpm

Accuracy of turntable speed:  Quartz controlled, max. ±0,1%

Speed Variation with VCD Operation:  ±25 %

Run-up Time at Tamb = 20°C

Quick Start:  max. 200 msec

Wow and Flutter:  max. ±0,075% (at 33 1/3 rpm measured with EMT 424, weighted in accordance with DIN 45507/IEC)

Rumble (measured in accordance with DIN 45 539 with test record DIN 45 544):

Unweighted : min. 50 dB

Weighted : min. 70 dB

Amplifier Section

Equalization (DIN,NAB, IEC):  75/318/3180 µsec 

Frequency Response:  40 Hz to 15 kHz ±0,5 dB;  30 Hz approx. -3 dB below 30 Hz approx. 20 dB/octave rolloff above 25 kHz approx. 12 dB/octave rolloff

Input Voltage

For magnetic Hi-fi  cartridges:  2  to 10 mV (version with Ri =47 kohms)

For dynamic cartridge:  0,3 to 1,4 mV (with active impedance transformer, gain = 17 dB)

Overload margin of the Input:  20 dB above nominal level

Output Voltage:  +6 dB (1,55 V) max. 10 V on 200 ohms

Harmonic Distortion:  max. 0,2%,  30 Hz to 12 kHz, at =15 dB (4,4 V) 0n 200 ohms

Crosstalk Supression:  min. 50 dB ,  30 Hz to 15 kHz

S/N Ratio RMS

Unweighted Peak : min. 70 dB

Weighted  : min. 64 dB (in accordance with CCIR 468-2)

Mono Switching:  Remote controllable

Headphone Outputs Mono and Stereo (200 Ohms):  0,5 to 2 V, unbalanced

General

Switchable for mains voltage of 100 to 120 V, 200 to 240 V, 50 Hz or 60 Hz

Power Consumption:  max. Approx. 85 VA (normally approx. 40 VA)

Dimensions (W x D x H):  500 x 440 x 195 mm (19,7" x 17,3" x 7,7")

Weight:  approx. 25 kg (55,12 lbs)

ADC XLM Mk II

The XML MkII Improved shares many of the virtues of the XLM MkIII Improved. Including excellent tracking ability and channel separation, high definition of musical passages and low record wear, plus the revolutionary Omni-Pivot System. The XLM MkII Improved also features a Diasa stone; a highly polished elliptical diamond tip fused to a sapphire base. Low effective tip mass is achieved by mounting the Diasa stone to a non-tapered hollow tube cantilever. The XLM MkII … a sound investment.

Specifications

Frequency Response:  15 Hz - 24 kHz ±1,5dB

Sensitivity:  0,9 mV/cm/sec.

Channel Balance:  1 dB

Channel Separation:  26 dB at 1 kHz;  15 dB at 10 kHz

Inductance:  350 mHy

Resistance:  625 ohms

Load Resistance:  47 kohms

Tracking Force:  ¾ - 1½ grams

Stylus Assembly:  Nude Diasa, Elliptical .0003" x .0007"Diamond, mounted to a hollow cantilever.

Cartridge Body Color:  Black and Gold

Stylus Color:  Black

Shielding:  Annealed MuMetal Case

Cartridge Weight:  5,75 grams

ADC QLM 36 - 34 Mk III

The ADC QLM 34 Mk III Series

The QLM 34 Mk III Series cartridges offer the hi-fi listener maximum stereo performance with minimum record wear. Of course they all feature ADC's patented Induced Magnat design for ultra low effective tip mass. It's high quality sound for a low investment.

Specifications

Frequency Response:  20 Hz - 20 kHz ±2dB

Channel Separation:  24 dB at 1 kHz;  15 dB at 10 kHz

Tracking Force:  1,5 to 3,0 grams

Stylus Assembly:  Bushed, Elliptical .0003" x .0007"Diamond, mounted to a hollow cantilever.

Cartridge Weight:  5,75 grams

The ADC QLM 36 Mk III Improved cartridge utilizes many of the sophisticated design concepts of the XLM Mk II Improved: the patented ADC Induced Magnet design, long life Omni-Pivot System, and a low mass Diasa tip. These features and more make the QLM 36 Mk III a great buy at a moderate price.

Specifications

Frequency Response:  15 Hz - 20 kHz ±2dB

Channel Separation:  24 dB at 1 kHz;  15 dB at 10 kHz

Tracking Force:  1,2 gram ±0,3 gram

Stylus Assembly:  Nude Diasa, Elliptical .0003" x .0007"Diamond, mounted to a hollow cantilever.

Cartridge Weight:  5,75 grams

Marantz Model 2230

 MARANTZ MODEL 2230 AM/FM STEREO RECEIVER

With impressive specifications and Marantz-exclusive features, the low-prieced Model 2230 offers more value and performance than any other receiver in its class. It delivers 60 watts continuous RMS into 8 ohm speakers from 40 Hz to 20 kHz with total harmonic and intermodulation distortion under 0,5%. Frequency response is ±0,5 dB. Stepped, three-zone controls for Bass, Mid, Treble. Provisions for tape decks, phones, record changers, 4-channel adaptors. Ultra low-distortion FET, RF and IF circuitry. Massive heat sinks; automatic protection for internal circuitry and associated speakers, plus the famous Marantz gold-anodized front panel. Completely enclosed metal chassis finished in simulated walnut or with optional WC-22 walnut cabinet.

Specifications

Tuner Section

FM Quieting Slope

RF Input for 30 dB Quieting : 2,0 µV

Quieting at 5µV RF Input : 53 dB

Quieting at 10µV RF Input : 57 dB

Quieting at 50µV Rf Input : 63 dB

Total Harmonic Distortion Stereo/Mono:  0,30%/0,15%

Selectivity (Alternate Carrier):  60 dB

Capture Ratio:  2,5 dB

Stereo Separation (at 1kHz):  42 dB

Spurious Rejection:  90 dB

Image Rejection:  70 dB

AM Suppression:  50 dB

IF Rejection:  90 dB

AM Sensitivity:  20 µV

Preamplifier Section

Dynamic Range Phono (ratio of input overload voltage to equivalent noise):  96 dB

Phono Sensitivity (for rated output):  1,8 mV

Phono Equivalent Noise Input:  1,5 µV

High Level Input Sensitivity:  180 mV

Preamplifier Output level:  1,0 V

Headphone Output Level:  1,0  V

Tone Controls:

Bass (50 Hz):  ±15 dB

Mid (700 Hz):  ±6 dB

Treble (15 kHz):  ±15 dB

Power Amplifier Section

Power Output RMS:  60 Watts (at 8Ω, both channels driven, at or below rated distortion, 20Hz to 20kHz)

Intermodulation Distortion:  0,5% (at or below rated power, any combination of two frequencies, 20Hz to 20kHz)

Total Harmonic Distortion:  0,5% (at or below rated power, any frequency from 20Hz to 20kHz)

Frequency Response:  20 Hz - 20 kHz ±0,5 dB

Power Bandwidth (IHF both channel driven):  15 Hz to 50 kHz

Basic Amplifier Input Sensitivity /Impedance:  1 V/47 kΩ

Damping Factor:  50

Power Supply: 110/120/220/240 V 50/60 Hz

Dimensions :  16⅞ x 5 x 14 inch

Weight:  40 lbs

Marantz Model 2220

 MARANTZ MODEL 2220 AM/FM STEREO RECEIVER

Traditional marantz quality and high performance make the exciting Model 2220 a lot of receiver for little money. With utmost reliability, it offers 40 watts continuous RMS into 8 ohm speakers, from 40 Hz to 20 kHz with total harmonic and intermodulation distortion less than 0,9%. Frequency response is an amazing ±1 dB. The professional preamp control section includes provisions for record changer, tape decks, phones, etc.,  plus precision over virtually every audio variable. Behind the Model 2220's gold-anodized front panel are: low-noise, low-distortion FET, RF and IF circuitry; massive heat sinks; and automatic protection for internal circuitry and associated speakers. Completely enclosed metal chassis is finished in simulated walnut.

Specifications

Tuner Section

FM Quieting Slope

RF Input for 30 dB Quieting : 2,1 µV

Quieting at 5µV RF Input : 50 dB

Quieting at 10µV RF Input : 56 dB

Quieting at 50µV Rf Input : 60 dB

Total Harmonic Distortion Stereo/Mono:  0,50%/0,30%

Selectivity (Alternate Carrier):  50 dB

Capture Ratio:  3,0 dB

Stereo Separation (at 1kHz):  40 dB

Spurious Rejection:  65 dB

Image Rejection:  50 dB

AM Suppression:  45 dB

IF Rejection:  60 dB

AM Sensitivity:  26 µV

Preamplifier Section

Dynamic Range Phono (ratio of input overload voltage to equivalent noise):  93 dB

Phono Sensitivity (for rated output):  2,1 mV

Phono Equivalent Noise Input:  2,2 µV

High Level Input Sensitivity:  150 mV

Headphone Output Level:  0,7 V

Tone Controls:

Bass (50 Hz):  ±12 dB

Treble (15 kHz):  ±12 dB

Power Amplifier Section

Power Output RMS:  40 Watts (at 8Ω, both channels driven, at or below rated distortion, 20Hz to 20kHz)

Intermodulation Distortion:  0,9% (at or below rated power, any combination of two frequencies, 20Hz to 20kHz)

Total Harmonic Distortion:  0,9% (at or below rated power, any frequency from 20Hz to 20kHz)

Frequency Response:  20 Hz - 20 kHz ±1 dB

Power Bandwidth (IHF both channel driven):  15 Hz to 50 kHz

Damping Factor:  45

Power Supply: 110/120/220/240 V 50/60 Hz

Dimensions :  16⅞ x 5 x 14 inch

Weight:  35 lbs

Kenwood KR-3090

 KR-3090 AM/FM STEREO RECEIVER

This units features wide band power with the same low distortion amplifier and high performance FM tuner you expect from Kenwood

Features:

26 watts per channel, Min. RMS both channels driven at 8 ohms, 20 - 20,000 Hz, with no more than 0,05% THD

Direct-coupled pure complementary amplifier circuit

Quietest phono section in its class: 83 dB S/N

3-gang tuning capacitor and FET front end for high FM sensitivity (2.0 µV ) with low distortion

PLL in FM Multiplex for improved stereo separation

Large signal strength and FM centre-tune meters

FM Auto Muting

Connetions for 2 pairs of speakers

Natural low-boost only loudness control

Tape monitor

Optional CB-11K walnut veneer cabinet, B-11 walnut veneer side panels, or D-5 carrying handles available.

Specifications

Min. RMS Power Output:  26 watts per channel (at 8 Ω, 20-20,000 Hz)

Total Harmonic Distortion:  no more than 0,05%

IM Distortion (at reted power):  0,05%

Damping Factor (at 8 Ω):  40

Imput Sensitivity:

Phono : 5,0 mV/ 120 mV

Aux, Tape : 150 mV

Signal-to-Noise Ratio:

Phono : 83 dB

Aux, Tape : 100 dB

FM Tuner Section

Sensitivity at 30 dB Quieting:  2,0µV  (11,2 dBf)

Sensitivity at 50 dB Quieting

Mono : 3,3µV (15,6 dBf)

Stereo : 35µV (36,1 dBf)

Max. Quieting

Mono : 76 dB

Stereo : 72 dB

Total Harmonic Distortion

Mono : 0,2%

Stereo : 0,3%

Capture Ratio:  1,4 dB

Alternate Channel Selectivity:  54 dB

Stereo Separation:  43 dB at 1 kHz; (35 dB at 50 - 10 kHz)

General

Inputs / Outputs:  Phono, Aux, Tape / 2 Speakers, Phones

Dimensions (W x H x D):  18-7/16 x 5-1/2 x 13-11/16 inch

Weight:  16,5 lbs

Kenwood KR-2090

 KR-2090 AM/FM STEREO RECEIVER

The lowest distortion of any receiver in its class and full power down to 20 hz. Overall performance you would expect in a much higher-priced receiver.

Features:

16 watts per channel, Min. RMS both channels driven at 8 ohms, 20 - 20,000 Hz, with no more than 0,05% THD.

Quietest phono section in its class: 83 dB S/N

3-gang tuning capacitor and FET front end for high FM sensitivity (2.0 µV ) with low distortion

PLL in FM Multiplex for improved stereo separation

Large center-channel AM/FM tuning meter

FM Auto Muting

Connetions for 2 pairs of speakers

Natural low-boost only loudness control

Tape monitor

Optional CB-11K walnut veneer cabinet, B-11 walnut veneer side panels, or D-5 carrying handles available.

Specifications

Min. RMS Power Output:  16 watts per channel (at 8 Ω, 20-20,000 Hz)

Total Harmonic Distortion:  no more than 0,05%

IM Distortion (at reted power):  0,05%

Damping Factor (at 8 Ω):  30

Imput Sensitivity:

Phono : 5,0 mV/ 120 mV

Aux, Tape : 150 mV

Signal-to-Noise Ratio:

Phono : 83 dB

Aux, Tape : 100 dB

FM Tuner Section

Sensitivity at 30 dB Quieting:  2,0µV  (11,2 dBf)

Sensitivity at 50 dB Quieting

Mono : 3,3µV (15,6 dBf)

Stereo : 35µV (36,1 dBf)

Max. Quieting

Mono : 76 dB

Stereo : 72 dB

Total Harmonic Distortion

Mono : 0,2%

Stereo : 0,3%

Capture Ratio:  1,4 dB

Alternate Channel Selectivity:  54 dB

Stereo Separation:  43 dB at 1 kHz; (35 dB at 50 - 10 kHz)

General

Inputs / Outputs:  Phono, Aux, Tape / 2 Speakers, Phones

Dimensions (W x H x D):  18-7/16 x 5-1/2 x 13-11/16 inch

Weight:  15,9 lbs

Rotel RX-800

 All Solid State Design with Silicon Output Transistors.

Split Power Supply and Direct Coupling Circuitry.

Superb FET Front End Tuner

Rotary Controls;  Dual Bass, Dual treble, Mode, Function Selector, Balance, Volume and Tuning.

Push Buttons;  Power, Dimmer, Speaker  1 and 2, Tone Defeat, Low Filter, High Filter, Loudness, Tape Monitor 1 and 2, Audio Muting and FM Muting.

Extra wide and linear Dial Scale.

Illumunated AM/FM Signal Strength Tuning Meter.

Illumunated FM Center Tuning Meter.

Illuminated Dial Pointer and stereo Beacon.

Function Indicator Lights.

Front Panel Headphone jack.

Pre-Amp Outputs and Main-Amp Inputs.

Connections for 2 Record Players and 3 Tape Recorders.

Handsome Wood Cabinet

Above model produced in Japan, below the European version

Specifications

Amp Section

Total Music Power (IHF):  180 W (4 ohms); 125 W (8 ohms)

Continuous Power (RMS):  60 W (4 ohms); 40 W (8 ohms) both channel driven at less than 0,5% THD

Harmonic Distortion:  less than 0,3% (at 40 W, 20 - 20,000 Hz)

IM Distortion: less than 0,2% at 40 W per Channel

Frequency Response:  4 - 75,000 Hz

Power Bandwidth (IHF):  5 - 50 Hz

Speaker Impedance:  4, 8, 16 ohms

Tuner Section

Sensitivity (IHF)

FM :  1,7µV

AM : 20µV

Harmonic Distortion: less than 0,5%

S/N Ratio:  65 dB

IF Rejection (FM) :  100 dB

AM Image Rejection:  75 dB

Stereo Separation:  38 dB

General

Power Voltage:  AC 100, 117, 220, 240 V, 50/60 Hz

Dimensions (W x H xD):  18" x 5½" x 13¾"

Weight:  12 kg (26,4 lbs)