JBL SE 400S

 JBL  SE-400S Energizer - this is the free-standing JBL 80 watt solid state stereo Energizer, suitable for placement anywhere. It can be enclosed in an equipment cabinet, stored out of sigh in any convenient location. Many users prefer to exhibit the award-winning design of the SE-400S as a decor accent on open surfaces. It is electronically identical to the SE-408S, and incorporates the same selection of JBL equalizer boards to perfectly complement the requirements of all JBL speaker Systems, as well as systems made by other manufacturers.

Specifications:

(All specifications are measured with both channels operating simultaneously into 8 Ω loads. AC line voltage is held to 117 volts, 60 cycles. In normal operation, the performance of the SE-400S  is not appreciably affected by line voltage fluctuations between 110 and 127 volts.)

Power Output: 

80 watts continuous RMS power;

40 watts per channel, at any frequency from 10 cps to 30,000 cps

Frequency Response:  with equalizer boards inserted for unequalized operation):

±0,25 dB form 20 cps to 20,000 cps

±1,5 dB from 3 cps to 175,000 cps

Harmonic Distortion:  less than o,15% from 20 cps to 20,000 cps at 80 watts or any level less than 80 watts

Intermodulation Distortion:  less than 0,15% at 80 watts or any level less than 80 watts (IHF standard 60 - 7,000 cps, 4 : 1 ratio)

Sensitivity:  0,8 to 3,0 volts input for rated output, depending upon the particular equalizer boards installed.

Hum and Noise:  90 dB below rated output

Transient Response:  with equalizer boards set for unequalized operation, rise time is 2,0 microseconds from 10% to 90 % of square wave signal at 160 watts peak power or any lower power level. Response to such square wave signals is free from detectable overshoot or ringing, as observed on an oscilloscope.

Overload Recovery:  less than 1/10th of one cycle to recover from 100% single cycle overload at any frequency from 20 to 20,000 cps

Output Impedance:  8 Ω rated impedance

(when driving a 16 Ω load, the SA-600 meets all published specifications except that power output is reduced to 64 watts. Wen driving a 4 Ω load the SA-600 produces 130 watts of undistorted power for brief periodes of time.  Prolonged operation at more than 40 watts per channel however will trigger the built-in automatic overload devices.

Stability:  The SE-400S, like the SA-600, utilize the exclusive JBL T-Circuit. The circuit is completely stable when connected to any loudspeaker system or even to a capactive load. Specifeid distortion and stability without ascilation are maintained through extreme variations in output load, whether resistiv, capacitive or inductive. Moreover, AC line surges do not affect the stability of the circuit.

Short Circuit Protection:  Absolute, The SA-600 cannot be damaged by accidental or intentional short or open circuit at the output terminals, or by any degree of impedance mismatch.

Transistors: 22 silicon transistors plus 20 silicon diodes.

 Dimensions (W x H x D): 15-1/4" x 4-5/8" x 7-3/4"

JBL SE 408S

 JBL  SE-408S Transducer Energizer - takes the place of a conventional stereo power amplifier, mounts directly into the rear panel of JBL loudspeaker enclosures. Plug-in equalizer boards tailor the characteristics of the SE-408S to precisely match the requirements of the loudspeaker systems which it drives. Performance of such a self-Energized combination is audibly superior to that which can be realized from any all-purpose amplifier

Special Features:

Plug-in equalizer boards match the performance of each channel of the Energizer to the requirements of the particular loudspeaker system used; exact damping for best transient reproduction, final frequency response correction for smoothest response. With the boards inserted for unequalized operation, the Energized operates as a laboratory standard power amplifier of the highest quality.

Circuit:

The JBl T-Circuit is an analog computer-type operational DC amplifier, the most nearly perfect amplifying circuit ever developed. All stages are direct-coupled, including the output stage, so that accurate control of the loudspeaker is maintained all the way down to zero frequency.

Specifications:

(All specifications are measured with both channels operating simultaneously into 8 Ω loads. AC line voltage is held to 117 volts, 60 cycles. In normal operation, the performance of the SE-408S  is not appreciably affected by line voltage fluctuations between 110 and 127 volts.)

Power Output: 

80 watts continuous RMS power;

40 watts per channel, at any frequency from 10 cps to 30,000 cps

Frequency Response:  with equalizer boards inserted for unequalized operation):

±0,25 dB form 20 cps to 20,000 cps

±1,5 dB from 3 cps to 175,000 cps

Harmonic Distortion:  less than o,15% from 20 cps to 20,000 cps at 80 watts or any level less than 80 watts

Intermodulation Distortion:  less than 0,15% at 80 watts or any level less than 80 watts (IHF standard 60 - 7,000 cps, 4 : 1 ratio)

Sensitivity:  0,8 to 3,0 volts input for rated output, depending upon the particular equalizer boards installed.

Hum and Noise:  90 dB below rated output

Transient Response:  with equalizer boards set for unequalized operation, rise time is 2,0 microseconds from 10% to 90 % of square wave signal at 160 watts peak power or any lower power level. Response to such square wave signals is free from detectable overshoot or ringing, as observed on an oscilloscope.

Overload Recovery:  less than 1/10th of one cycle to recover from 100% single cycle overload at any frequency from 20 to 20,000 cps

Output Impedance:  8 Ω rated impedance

(when driving a 16 Ω load, the SA-600 meets all published specifications except that power output is reduced to 64 watts. Wen driving a 4 Ω load the SA-600 produces 130 watts of undistorted power for brief periodes of time.  Prolonged operation at more than 40 watts per channel however will trigger the built-in automatic overload devices.

Stability:  the SE-408S, like the SA-600, utilize the exclusive JBL T-Circuit. The circuit is completely stable when connected to any loudspeaker system or even to a capactive load. Specifeid distortion and stability without ascilation are maintained through extreme variations in output load, whether resistiv, capacitive or inductive. Moreover, AC line surges do not affect the stability of the circuit.

Short Circuit Protection:  Absolute, The SA-600 cannot be damaged by accidental or intentional short or open circuit at the output terminals, or by any degree of impedance mismatch.

Transistors:   22 silicon transistors plus 20 silicon diodes.

 Dimensions (W x H x D):  SE-408S :  15-1/4" x 4-5/8" x 6-3/4"

Luxman M-02

 Luxman M-02 Duo-Beta Circuit/s Singl-Stage Power Amplifier

Affluent Power Output and Exclusive Circular-Type Power Transformer

Such a high power as 150 watts per channel is easily taken out thanks to DC push-pull configuration supported by the solid power supply section featuring a newly developed circular-type transformer with 450 VA capacity in combination with 15,000 µF smoothing capacitors. The circular-type transformer provides better regulation than the conventional transformers. High quality coils are wound symmetrically in parallel on so-called "orient' core featuring high saturation flux density which is seamlessly solidfied under low temperature with the same directivity. Now it is made possible to cope with even a sudden large input signal and at the same time to eliminate such magnetic leakage and flux detrimental to sonic quality. Further employed is a luxurious, high-efficiency heatsink used even for the artificial satellite.

 BTL (Duo-Alpha) Monayral Connection

The BTL selector switch provided makes it possible to take out an astounding monaural 320 W into 8-Ω loads, and you can compose a mammoth 320 watts-per -channel stereo system with a pair of this unit or use this as a centre channel amp for 3D system.

Protection Circuitry

Multiple protection circuits are care-fully arranged to protect your valuable speakers and the amp itself. Specifically, an electronic heat sensor controls excessive heat generation, and Lux's exclusive protection circuit safeguards the amp from possible damage caused by excessive current. On top of that, the electronic realy circuits is instantly activated to shutt off the output when DC components are detected at the speaker terminals.

Other features

Large, easy-to-read power meters with logarithmic linear scale, warm-up indicator for stable, safe operation, abundant application of special audio capacitors, gold-plated input/output connectors, etc.

Specifications

Power Output :

From 20 Hz to 20 kHz:  140 W per Channel at 8 Ω

At 1 kHz :  140 W per Channel at 4 Ohms

BTL Power :  300 W at 8 Ohms

Dynamic Power (1 kHz, IHF Signal): 

190 Watts at 8 Ω

290 Watts at 4 Ω

410 Watts at 2 Ω

Total Harmonic Distortion:  less than 0,025%

Frequency Response: 10 Hz to 100 kHz (-0,5 dB)

Signal-to-Noise Ratio:  greater than 120 dB

Input Sensitivity/Impedance:  1,2 V/ 45 k Ω

Dimensions (W x Hx D):  453 x 141 x 336 mm (17-3/16" x 5-9/16" x 13-3/16")

Weight:  14,5 kg (31,9 lbs)

Luxman M-05

 Over the years, Luxman's strength in engineering excellence has always been most evident in amplifier design.

The M-05 (and M-02) represent the latest in electronic technology from Luxman.

These power amplifiers contain the most current circuit designs, including Duo-Beta with single-stage amplification and L.E.D. bias circuitry.

And as the models from which allLuxman amplifier sections are designed, the M-05 and M-02 utilize discrete output transistors and maintain high dynamic power even into low impedance loads.

The top-of-the-line M-05 is a pure class "A" configuration and sonically ranks with the finest amplifiers in the world.

Luxman M-05 Duo-Beta / S Class "A" Power Amplifier Features

105 W per channel Class "A" power Output

Duo-Beta / S Circuitry

Discrete Output Circuitry

Dynamic headroom Bridged Transformer-less (400W)

LED Bias Circuitry

Torroid Power Transformer

Plus-X Power Supply and Separate Power Supplies

Star Pattern Circuit Topology

Non-Magnetic Chassis

Peak Reading Meters with peak Hold

Separate Channel Attenuators

Electrostatic Speaker Terminals

 Power  Supply and "Single-Stage" Amp is now reinforced by "LED" Bias Current

The 1st stage we ventured to use high Gm, low-noise FET for head-amp at the 1st stage. In this way, we succeeded in removal of the 2nd stage to form an ideal amp having only one stage for voltage amplification.

Ample Power Supply

A slim but effective power transformer with outstanding regulation is newly designed for this high quality separates, which ensure longlasting, stabilized performance in combination with the select capacitors specially developed for audio use. Especially, the power transformer employed this time offers far better efficiency than those with the conventional EI core, which makes it possible to reproduce soild bass sound

Unconditional Stability

"Single-Stage" amp thus created totally banishes various hums inclusive of power supply noises hitherto amplifies by the 2nd stage, and at the same time ensures high stability with the highest slew rate.

LED Bias Current System

Unprecedented speedy attack and decay are given in the actual auditory feelings thanks to our unique bias current circuit employing LED's in lieu of normal diodes. In fact, the LED provides very sharp rise and decay in the statics when compared with silicon diode, and therefore ensures stable bias power supply. In addition, it is possible to cope with even an unexpected, sudden fluctuation due to its inherent high-speed response.

Furthermore, the inter-terminal voltage per LED is higher than that of diode in general, and to share the same voltage the smaller number of LED's will do in comparison with that of diode. Thus, the esponse speed as well as the decay and rise characteristics show multiple effect, providing conspicuous improvement in the auditory feelings. Unexperienced pure sound is now unveiled.

Specifications

Power Output (from 20 Hz to 20 kHz)

105 W per Channel at 8 Ohms

210 W per Channel at 4 Ohms

400 W BTL at 8 Ohms

Dynamic Power (1 kHz, IHF Signal):

Total Harmonic Distortion:  less than 0,025%

Frequency Response: 10 Hz to 100 kHz (-0,5 dB)

Signal-to-Noise Ratio:  greater than 120 dB

Input Sensitivity/Impedance:  750 mV/ 300 k Ω

Dimensions (W x Hx D):  461 x 210 x 440 mm (18-1/8" x 8-1/4" x 17-1/4")

Weight:  39,8 kg (88,4 lbs)

Denon DP-30L II

 DP-30L II Auto Lift Direct-Drive Turntable Features:

The DP-30L II tonearm employs an auto-lift system with a non-contact record-end sensor that doesn't affect sound quality.

Lightweight straight tonearm extracts maximum performance from the latest generation of high quality phono cartridge.

Outstanding anti-howling characteristics through a cabinet made of new compound HDC (High Density Compound - a mixture of special materials). HDC has a specific gravity of close to 2 (two to three times greater than ordinary wooden cabinets), and offers excellent vibration daping characteristics.

Trim and slim profile with up-fromt control system.

Unique magnetic record detection system for speed servo and AC motor.

Specifications

Phono Motor Section

Drive System:  Servo control Direct System

Motor:  AC servo motor

Spedd Control System:  Servo control with frequency detection

Speed:  33 ⅓ and 45 rpm

Speed Deviation:  less than 0,002%

Wow and Flutter:  less than 0,015% WRMS

Signal-to-Noise Ratio:  78 dB (DIN-B)

Rotation Stability Time:  less than 1,5 sec to reach nominal speed (33 ⅓ rpm)

Load Characteristics:  0% (under stylus force 80 g)

Turntable Platter:  300 mm diameter, Aluminum die-cast

Tonearm Section

Type:  Static balance type straight tonearm

Effective Length:  220 mm

Overhang:  16 mm

Tracking Error:  within 3°

Stylus Force Range:  0 - 2,5 g

Acceptable Weight of Cartridge:  4,5 - 9,0 g

Headshell NO.:  PCL-30

Power Consumption:  15W

Power Supply:  AC 120/200/220/240 V 50/60 Hz

Dimensions (W x H x D):  450 x 140 x 403 mm

Weight:  9,5 kg

Pioneer PL-L800

Pioneer Tangential Tracking

The most accurate way of playing a record is with a tone arm that remains always tangent to the record groove, since this is how the groove was cut. Only a tangential tracking arm can do this.

A tangential tracking arm, when properly designed, engineered and manufactured, eliminates skating force and lateral tracking error, along with the excessive, often irregular record wear they cause. At Pioneer, we have successfully devolped just such a tangential tone arm. It uses a non-contact linear motor for smooth, vibration-free, lateral movement.

 Compare the Pioneer tangential-tracking tone arm to competing versions. Others depend on vibration-prone motors driving rollers, worm screws or pulleys. In terms of performance, there's simply no comparison.

Four advantages of tangential-tracking tone arms

1 - Lateral tracking error, for all practical purposes, remains zero throughout play. Thus, intermodulation distortion is avoided.

2 - There is no inward skating force, making an anti-skating system unnecessary.

3 - Lateral balnced  is ideal

4 - The arm can be short, thus reducing effective mass.

 Features

Tangential Tracking:  for reduced tracking error and better defined sound

Non-contact linear motor for arm movement:  for high signal-to-noise ratio and smooth arm tracking

Rigid, short low-mass straiht PG tone arm:  tarnes resonance for better tracking.

Coreless DC direct0drive motor with Stable Hanging Rotor:  provides smooth rotation and perfect stability.

Quartz-PLL servo plus Periphery Integration:  rock-steady platter-speed accuracy with and load.

Computer-controlled fully automatic operation:  fully protects arm and motor from improper operation

Universal cartridge connector:  any standard cartridge of your choice can be used.

High-output moving-coil cartridge (PC-6MC):  connects directly to amp's MM phono terminals.

Specifications

Motor and Turntable

Drive System:  Dirct-drive

Motor:  Quartz PLL-Hall motor

Turntable Platter:  320 mm diameter, aluminum alloy die-cast

Speeds:  33⅓ and 45 rpm

Wow and Flutter:  less than 0,025% (WRMS); 0,035% (DIN)

Signal-to-Noise Ratio:  more than 78 dB (DIN-B)

Rotational Characteristics

Build-up Time:  within 120° rotation at 33⅓ rpm

Speed Deviation:  less than 0,002%

Speed Drift:  less than 0,00008%/h at 33⅓ rpm

Less than 0,00003% /degree temp change at 33 ⅓ rpm

Tonearm

Type:  Linear Motor Direct-drive, Static-balance type, Linear-tracking arm

Effective Arm Length:  162 mm

Overhang:  0 mm

Usable Cartridge Weight:  3 g - 8 g

Subfunction:

Auto lead-in

Auto-return

Auto cut

Quick repeat

Quick paly

Quick stop

Remote Tonearm Operation

Stylus pressure direct-readout counterweight

Cueing device

Free stop hinges

Miscellaneous

Power Requirements:  AC 120 V / 220- 240 V, 50/60 Hz

Power Consumption:  22W

Dimensions (W x Hx D):  420 x 120 x 427 mm (16-9/16" x 4-3/4" x 16-13/16")

Weight:  8,3 kg (18 lb 5 oz)

PC-$MC cartridge Specifications

Type:  Moving coil type

Stylus:  0,3 x 0,7 mil diamond (PN-4MC)

Output Voltage:  1,5 mV

Tracking Force:  1,7 g to 2,3 g

Frequency Response:  10 to 35,000 Hz

Recommended Load:  50 k Ω

Weight:  3,1 g

Pioneer SA-740

 Stereo Integrated Amplifier (1983)

Specifications

Amplifier Section

Continuous Power Output:  40 watts per channel (at 8 Ω from 20 - 20,000 Hz with no more than 0,05% THD)

DIN Continuous Power Output:  54 watts per channel (at 8 Ω, 1 kHz, 1% THD)

Total Harmonic Distortion (20 - 20,000 Hz, 8 Ω)

Contiuous rated Power Output:  no more than 0,05%,

40 watts per Channel Power Output:  no more than 0,05%

Damping Factor (1 kHz, 8 Ω):  60

Imput Sensitivity/Impedance:

Phono:  2,5 mV/ 50 k Ω

Tuner, CD/Aux, Tape Play, Adaptor In:  150 mV/50 k Ω

Phono Overload Level (THD 0,1%, 1 kHz):  150 mV

Output Level:

Tape Rec, Adaptor Out:  150 mV

Speaker:  6 - 18 Ω

Frequency Response:

Phono (RIAA Equalization):  20 Hz to 20,000 Hz ±0,5 dB

Tuner, CD/Aux, Tape Play, Adaptor:  10 Hz to 70,000 Hz +1 dB, -3 dB

Tone Control:

Bass: ±10 dB at 100 Hz

Treble :  ±10 dB at 10 kHz

Loudness Contour (Volume control set at -40 dB position):  +6 dB (100 Hz ), +3 dB (10 kHz)

Hum and Noise (IHF, short circuited A network)

Phono :  72 dB

Tuner, CD/Aux, Tape Play, Adaptor IN :  102 db

Hum and Noise (DIN, continuous rated power output/50 mW)

Phono :  69 dB/ 62 dB

Tuner, CD/Aux, Tape Play, Adaptor In:  88 dB / 62 dB

Miscellaneous

Power Requirements:  AC 120 V, 220 - 240 V 50/60 Hz

Power Consumption:  90 - 110 watts

Dimensions (W x H x D):  420 x 98 x 287 mm (16-9/16" x 3-7/8" x 11-5/16")

Weight:  5,4 kg (14 lb 5 oz)

Sony SSU-4000

 The SSU-4000 

Both these speakers are 3-way bass reflex systems that encompass vurtually every technological advance currently available to speaker design. While their design is very conventional, the devotion to detail is immediately apparent in the flawless way in which they effortlessly handle the entire frequency range.

Carbocon

The woofer and mid-range speaker cones are made of "Carbocon" - a carbon fiber material that is the product of the combination of hightensil carbon fiber with a particular North European cone pulp. This blend exibitis stiffness and low mass - which is required as the parameters of an ideal piston -action sound transducer. You can hear thewell controlled tight lows and the unpercedented natural presence in mid-range reproduction.

Balanced Drive Mechanism

Mid-range response is heightened by both the Balanced Drive Mechanism and the Diffuser/Equalizer The Balanced Drive Mechanism, provides for the oversized voice coil to be mounted at the cone's  center of gravity. By placing  the coil at the point where the driving masses of the outer and inner side of the cone are balanced, the cone paper's bending motion or "doubling" is greatly reduced. The results is the faithful conversion of electrical input to audio output in a wider range of frequencies.

The mid-range and tweeter "Diffuser/Equalizer" provides for a mid to high frequency response that is highly transparent and smooth. This acoustic equalizer eliminated peaks and dips better than anything yet developed.

 Advanced Woofer Design

High quality bass response is assured by Sony's advance woofer design. The woofer design concept calls for a high elastically in suspension, so that the necessary damping of the cone's movement can be achieved. A newly developed spider made  of high quality glass epoxy is used to keep linear movement in line and prevent any unwanted vibration in other modes. You end up with clean, non-fuzzy reproduction of low frequencies. Adequate damping of the woofer cone movement is further achieved with the extra powerful magnet and T-shaped pole-piece which focuses the magnetic field on the most effective area.

Advanced Tweeter Design

The SSU-4000 feature a TitanumDome Tweeter.

This tweeter has applied to its surface a 20 micron thickness of titanium foil. Titanium was selected because it's not only strong, but light enough to move fast, which is required at high frequencies.

They are also equipped with a precision cast aluminium frame, continually adjustable level control for the mid-range and tweeter, and an intricate dual-slope L/C network to smooth blend the output of the mid-range and tweeter.

Only the highest quality materials are used throughout including aluminium, cooper, high density flakeboard, double-knit grille cloth fabric, and fine, hand-rubbed hardwood veneers.

The Sony SSU-4000 (and SSU-3000) are for those who refuse to pay for gimmickry and, more importantly, demand quality and perfection.

Sony SSU-4000 Features

3-way bass reflex system with 10" cone woofer, 14" rectangular bass radiator and 3 ¼" balanced drive cone midrange

"Carbocon"  carbon fiber cone material is stiff and of low mass for  outstanding frequency and transient response.

"Balanced Drive" mid-range with oversize voice coil eliminates cone "doubling"

Buffer Board between woofer and passive bass radiator prevents internal reaction caused by standing wave effects.

Intricate Dual-Slope L/C Network blends woofer, mid-range and tweeter to reduce sharp peaks and dips.

Mid-range and tweeter "Diffuser/Equalizer" smooths peaks and dips in the mid to high freqiency range.

Newly-developed spider of glass epoxy reduces unwanted vibration in the low frequency mode, while maintaining long, linear voice coil excursion.

20 micron Titanium Dome Tweeter for transparent highs.

Precision cast Aluminum Frame keeps cone and voice coil locked in position, and reduces transfer of unwanted vibrations to cabinet.

Cabinet finished in fine, hand-rubbed multiple lacquer coatings and hardwood veneer.

Specifications

Nominal Impedance:  8 ohms

Frequency Response:  30 Hz - 20 kHz

Crossover Frequencies:  500 Hz (12 dB/oct);  5,5 kHz (6 dB /oct)

Power Handling Capability:  100 W (DIN 45500)

Recommended Amplifier Power:

Minimum :  20 watts

Maximum :  150 watts

Speaker Complements:

1 x 10" (254 mm) cone woofer

1 x 9" (230 mm ) passive Radiator

1 x 3 ¼" (80 mm) midrange driver

1 x 1" (25 mm ) dome tweeter

Midrange and Tweeter Controls:

+3 dB to -3 dB

+4 dB to -40 dB

Dimensions (H x W x D):  1192 x 343 x 361 mm (46-15/16" x 13-1/2" x 14-3/16")

Weight:  32 kg (70 lb 9 oz)

Sony SSU-3000

 The SSU-3000 and SSU-4000 are the latest addition to Sony's fine line of outstanding high fidelity loudspeaker systems. Two speakers that Sony presents with exceptional pride. Pride that stems out of all the years of effort and speaker research that went into them. 

So let us look briefly at some of the steps that led up to the ultimate development of these ultimate Sony speakers. 

The Basic Premise 

Today's technology simply does not allow for the perfect conversion of electrical into mechanical energy. We at Sony approached the development of our speakers with this grim reality in mind. 

Thus our goal was lofty, but realistic. To create a line of speakers with a minimum of coloration. With a wide and flat frequency response and low distortion. 

 Sony SSU-3000 Features

3-way bass reflex system with 10" cone woofer, 3 ¼" midrange and 1" dome tweeter

"Carbocon"  carbon fiber cone material  for  outstanding frequency and transient response.

"Balanced Drive" mid-range with oversize voice coil eliminates cone "doubling"

Mid-range and tweeter "Diffuser/Equalizer" smooths peaks and dips in the mid to high freqiency range.

Microscopic titanium foil in Titanium Dome Tweeter brings out transparent highs

Newly-developed spider of glass epoxy reduces unwanted vibration in the low frequency mode, while maintaining long, linear voice coil excursion.

Precision cast Aluminum Frame keeps cone and voice coil locked in position, and reduces transfer of unwanted vibrations to cabinet.

Continually adjustable level controls for mid-range and tweeter

Dual-Slope L/C Network blends woofer, mid-range and tweeter to reduce peaks.

Bass reflex tuned port raises acoustic efficiency

High power handling capacity - up to 150 watts

High density flakeboard cabinrt finished in fine, hand-rubbed multiple lacquer coating and hardwood veneer.

Spring-loaded speaker terminals

Specifications

Nominal Impedance:  8 ohms

Frequency Response:  35 Hz - 20 kHz

Crossover Frequencies:  600 Hz (12 dB/oct);  5,5 kHz (6 dB /oct)

Power Handling Capability:  100 W (DIN 45500)

Recommended Amplifier Power:

Minimum :  20 watts

Maximum :  150 watts

Speaker Complements:

1 x 10" (254 mm) cone woofer

1 x 3 ¼" (80 mm) midrange driver

1 x 1" (25 mm ) dome tweeter

Midrange and Tweeter Controls:

+3 dB to -3 dB

+4 dB to -40 dB

Dimensions (H x W x D):  868 x 343 x 361 mm (34-3/16" x 13-1/2" x 14-3/16")

Weight:  27 kg (59 lb 9 oz)

Kenwood TK-40x

 Kenwood model TK-40x Solid State Stereo FM/AM Receiver System

Kenwood has matched an outstanding solid state receiver with two compact speakers to offer you a superbly engineered stereo sound system that adds up to unusual quality and value. The FM/AM TK-40x Receiver offers 40 watts music power, silicon transistor amplifier, F.E.T. , 3-gang tuning condense, exclusive power transistor protection circuit, and other advanced engineering features. The s-40 speaker set, with a large size (6 ½") woofer and built in tweeter, provides dynamic bass, excellent mid-range and brilliant, smooth, distortion-free treble sound.

Special Features

Tuner Section

3-gang tuning condenser front-end for superior sensitivity and image rejection.

5 IF stages with 4 limiters and wideband ratio detector to provide 45 dB alternate channel selectivity and freedom from noise and interference.

Automatic Stereo/Mono mode silent switching circuit with steeo light indicator

4 diodes time division multiplex decoder for 38 dB stereo separation.

Illuminated pinpoint tuning meter.

Amplifier Section

40watts  of IHF stsndard total music power

Very low IM distortion for exceptional clear-sound low level to high level listening

All silicon transistor amplifier for wide 20 to 50,000 Hz frequency response and 20 to 30,000 Hz power band width.

High damping factor 40 (16 ohms), 20 (8 ohms), for excellent transient response.

Exclusive blow-out free automatic circuit breaker protects power transistor.

4-position program source selector permits AM, FM, AUTO, PHONO and AUX.

Direct tape monitor switch for tape monitoring without changing cable connection.

Mode switch for Stereo and Mono sound reproduction

Volume control with rocker switch for loudness control.

Bass and treble controls may be used to regulate eachchannel simultaneously.

High filter switch eliminates for scratch noise and stereo multiplex noise.

4 pairs of input terminals for MAG, AUX, TAPE REC and TAPE PLAY.

Front panel stereo phone jack

Center channel low level output for monaural amplifier and speaker.

Handsome simulated walnut finish cabinet - included in price of unit.

Specifications

Tuner section

Usable Sensitivity

FM :  2,5 mV (IHF standard)

AM :  10 mV (IHF standard)

FM Frequency Response:  20 - 20,000 Hz ±2 dB

FM Signal-to-Noise Ratio:  60 dB

FM Harmonic Distortion:  0,6% (1 kHz, 100% mod)

FM Capture Ratio:  2,5 dB

FM Selectivity:  45 dB

FM Stereo Separation:  38 dB (at 400 Hz)

FM Image Rejection:  60 dB

FM Cross Modulation Rejection:  80 dB

FM IF Stages:  5 stages

AM/FM  Front End:  Transistorized 3 Gang (FM), 2 Gang (AM)

Amplifier Section

Total Music Power:  40 watts (IHF standard at 4 Ω)

Continous Power:  32 watts (0,5% THD)

Frequency Response:  20 Hz - 50,000 Hz

Power Bandwidth:  20 Hz - 30,000 Hz  (-3 dB)

Signal-to-Noise Ratio: 

Phono :  60 dB

Aux :  70 dB

Input Sensitivity:

Phono :  2 mV

Aux :  150 mV

Tape Play :  150 mV

Mag Maximum Input Signal:  100 mV P.P. (1 kHz)

Damping Factor:  20

High Filter:  6,000 Hz Cut-off

Bass Control:  ±10 dB at 50 Hz

Treble Control:  ±10 dB at 10,000 Hz

Volume Control Tracking Error:  within 3 dB

Center Channel Output:  yes

Speaker Impedance:  4 - 16 Ω

Power Consumption:  AC 110 - 120 Volts, 60 watts

Dimensions (W x H x D):  16 ½ " x 5" x 12"

Net Weight:  19,8 lbs

Kenwood S-40x

Specifications Speaker Section

Speakers Unit:

Bass and Mid-Range:  6 ½" woofer rolled cloth edge - air suspension type

Treble:  2 ¾" cone type tweeter

Cabinet:  Hermetically sealed type; handsome saran grill

Crossover Frequency:  4,000 Hz

Frequency response:  50 - 20,000 Hz

Impedance:  8 Ω

Maximum Power Input:  20 watts

Dimensions (W x H x D):  10" x 16-1/8" x 8"

Weight:  8,8 lbs

T.A.C. 834

 Tube amplifier with great performance that nevertheless never misses out on easiness and musicality. Equiped with 4xEL34 for each channel, this whopper has enough power to reproduce any bass foundation. Over average strong tube power amplifier for price range.

Wonderfully open sound that will carry you away.

Incredibly impulsive and most splendidly arranged bass.

 Looking at the facts first, the 834 is a push-pull design, using two pairs of paralleled EL34s per channel to generate a rather optimistic quoted 120W per channel. These are driven by one 12AX7 (ECC83) and one 12AU7 (ECC82) valve per channel.

The output valves operate in fixed bias mode which, confusingly, means bias needs to be adjusted via preset potentiometers that are accessible in the top panel, in conjunction with a multimeter used on the appropriate test points beside each valve. Input count is four at line level but there is no tape loop facility, and the hefty output transformers have dedicated taps for four and eight Ohms.

Finished in a very pleasing shiny chrome, offset by matt black transformer covers, control knobs and valve covers, the T.A.C. 834 is a very smart device and is sturdily built, as shown by its 25kg weight. Fortunately, it is quite compact, measuring 420x210x270mm (WxHxD), and so it does not consume a vast amount of rack space. Duly sited and warmed up, I was ready to see if it would work any magic on my ears. 

Specifications

Rated Power RMS 4-8 Ohm:  2 x 120 W RMS 8 Ohm

Frequency Range:  20 Hz - 25 kHz +/- 1.5 dB

THD:  < 0,8 % max. (1 kHz, 1 W)

Signal-to-Noise Ratio:  > 89 dB

Input Impedance:  100 kOhm

Speaker Impedance:  4 or 8 Ohm

Tube Pre Amplifier:  6N3

Tube Power Amplifie:r  EL 34

Power Supply:  230 V / 50 Hz

Dimensions (WxHxD):  420 x 210 x 270 mm

Weight:  25 kg

Color:black and chrome