Kenwood KC-6060

 Solid State Audio-Lab Scope Kenwood KC-6060 - really find out what's gone wrong with your FM tuners and amplifiers. The KC-6060 is a fully-equipped, long-service-life professional instrument for highest quality testing.

Easy-to-see audio waveform is dispalyed on the 3-inch viewing area by 25 mV/cm (minimum) deflection sensitivity. Wave forms up to 200 kHz are perfectly visualized for diagnosis.

The handy, durable KC-6060 also has a buolt-in 1 kHz oscillator for audio testes.  You don't have to use the other oscillator. Front and rear panels include switchable audio input jacks.  Frequency from 10 to 100,000 Hz are shown at top dispaly quality with the built-in sweep generator.

 Special Features

1. The 3-inch viewing area with 25 mV/cm (minimum) deflection sensitivity provides easy-to-see audio waveform display and serves to visualize wave form of up to 200 kHz for diagnostic observation.

2. The built-in 1 kHz Oscillator for various testing of audio without using the other oscillator.

3. Switchable audio input jacks are provided on both front and rear panels.

4. The built-in Sweep Generator for observing the best dispaly of various frequencies from 10 to 100,000 Hz

5. Solid-State circuits insure cool and reliable performance. Long service life with virtually no maintenance is assured by the manufcturer.

Specifications:

Vertical Amplifier

Sensitivity: 

25 mV p-p/cm (63 mV p-p/inch) at front panel input

250 mV p-p/cm (630 mV p-p/inch) at rear panel input

Frequency Response:  3 Hz to 200 kHz , -3 dB or less

Input Impedance:  250 k Ω

Input Capacity:

Less than 40 pF at front panel input

Less than 60 pF at rear panel input

Horizontal Amplifier

Sensitivity:

25 mV p-p/cm (63 mV p-p/inch) at front panel input

250 mV p-p/cm (630 mV p-p/inch) at rear panel input

Frequency Response:  3 Hz to 200 kHz , -3 dB or less

Input Impedance:  250 k Ω

Input Capacity:

Less than 40 pF at front panel input

Less than 60 pF at rear panel input

Sweep Generator

Sweep Frequency:  10 Hz to 100 kHz in four step

Synchronization:  Internal (-)

Oscillator

Frequency:  1,000 Hz ±10%

Output Voltage:  Max. 1 V RMS

Calibration (Test):  0,1 V p-p ±5%

Input and Output:

Audio Input (L & R), front & rear FM Multipath (V & H) ocsillator output

Selector Switch

Test, Wave Form (L & R), Stereo Display & FM Multipath

General

Cathode Ray Tube:  3 inches

Semiconductors:  4 FETs,  19 Transistors,  14 Diodes

Power oltage:  AC 110- 120 V, 220 -240 V, 50/60 Hz

Power Consumption:  25 watts

Dimensions (W x H x D):  408 x 134 x 280 mm, (16-5/16" x 5-5/32" x 11-1/32")

Weight:  17 lbs

Kenwood KF-8011

 Kenwood Solid State Audio Denoiser  KF-8011 does not belong to the conventinal noise filter which excludes necessary signals together with noises. It functions as the S/N Stretcher or Noise Reduction System used in the process of disc production, and electronically eliminates the noises included in the sources.  Thanks to its exclusive circuitry, KF-8011 remarkably increases the signal to noise ratio and fully refreshes the program sources. It's especially profitable for tape dubbing.

 Special features

Minute Denoising

The KF-8011 decreases the noises between 3 kHz and 15 kHz, which affects most badly on the sound performance, by 6 - 10 dB. The built-in Frequency Selector enables to pick up the particular frequency range in order to denoise precisely.

Noise level Adjustor

The KF-8011 features a pair of large Level Meters and 10-step type level Adjustor for setting and monitoring the suitable level pint of program sources. In addition, the volume of cut-off noises can be controlled by the Noise level Adjustor. That means KF-8011 always functions so as to keep the S/N ratio the best condition.

Sufficient Input Jacks

As the Denoiser is to be connected to the Rec/Play terminals of an amplifier, KF-8011 has the complete input and output for tape decks including DIN connector. It also has 4 pairs of input jacks and by the Input Selector on the front panel 4 sources are switchable.

Check System for Denoising Condition

The built-in Defeat Switch permits to check the denoising condition - what frequency range is to be denoised, how much the S/N ratio has been improved, etc.

Automatic Circuit Switching

As shown on the following diagram, the Denoiser is to be inserted to the input side when making refined recording, and to the output side when enjoying refined playback. It is, however, quite needless to reconnect KF-8011. The Denoiser Position on the front panel switches the circuitry automatically.

Specifications

Frequency Response:  10 Hz - 80 kh ±0,5 dB

Noise Blocking Characteristics (0db =1 V, at 3,5 - 12 kHz):

Input Level / Noise Blocking Amount (S/N Improving Ratio):

0 dB / 0 dB

-30 dB / 0 dB

-40 dB / 2 dB

-45 dB / 10 dB

50 dB / 15 dB

Noise Blocking Filter Frequency Response:

3 - 4,5 kHz : -8 dB (1 kHz = 0 dB)

4,5 - 6,5 kHz : -8 dB (1 kHz = 0 dB)

6,5 - 10 kHz : -8 dB (1 kHz = 0 dB)

10 - 15 kHz : -8 dB (1 kHz = 0 dB)

(-20 dB at following points:  3,5 kHz, 5,5 kHz, 8 kHz, 12 kHz)

Gain:  0 dB ±1 dB

Maximum Input:  8 V at level Control "0" position

Distortion:  less than 0,09% (5,5 kHz, 1 V input)

Input Impedance:  More than 50 k Ω

Output Impedance:  1 k Ω

Level Difference of Counter-Channel:  Within ±1 dB (1 kHz)

S/N Ratio:  Better than 75 dB (1 kHz, 0 dB =1 V)

Channel Separation:  Better than 55 dB

Input and Output terminals:

4 x Input

2 x output

1 x Tape paly, Tape Rec

1 x Tape DIN

Switches and Controls: 

Tape Monitor Switch;

Large VU Meter;

De-Noiser Position Selector;

Filter Defeat Switch;

Level Control;

Noise level Control;

Through Switch

Power Voltage:  110 - 120 V, 220 - 240 V; 50/60 Hz

Power Consumption:  10 watts

Dimensions (W x H x D):  408 x 134 x 280 mm (16-5/16" x 5-5/32" x 11-1/32")

Weigt:  6,4 kg (14 lbs)

McIntosh C 26

PERFORMANCE, UNLIMITED PERFORMANCE IS A DESIGN REQUIREMENT AT MclNTOSH

Low distortion is a requirement For high performance in a preamplifier. A typical wave form analysis of the C 26 at 2,5 volts output is a 99.95% perfect reproduction of the input wave, 20 Hz through 20,000 Hz!

Performance is important to your listening expectations. With a Mclntosh you are assured of highest performance because Mclntosh guarantees performance. Your C 26 must be capable of meeting its advertised specifications or your purchase price will be refunded. Mclntosh promises performance and delivers performance.

 RELIABILITY IS A DESIGN REQUIREMENT AT MclNTOSH

Endless hours are invested by our engineers carefully and thoroughly testing and retesting individual component parts. These hours are required to provide you with the highest degree of reliability that modern design and manufacturing can produce. Only because of this exhaustive program can Mclntosh guarantee you complete freedom from service costs tor the first THREE YEARS that you own your C 26,

 LONG LIFE IS A DESIGN REQUIREMENT AT MclNTOSH

Exhaustive testing and evaluation of each component part makes your C 26 the best value. As an example- the front panel is constructed of materials that are nearly indestructible! The combination of anodized aluminum and glass are impervious to attacks by acids and oils. The subtle beauty of the C 26 will remain unblemished year, after year, after year. This attention to detail increases the value of a Mclntosh at trade in time.

 FLEXIBILITY IS A DESIGN REQUIREMENT AT MclNTOSH

Careful attention to customer needs, attention to changes in customer use, and constant experimentation in new methods makes the Mclntosh C 26 preamplifier the most responsive to customer  needs. Control of remote loudspeaker and main system loudspeakers from the preamplifier is a Mclntosh innovation.

With the C 26 you can record on one or two tape recorders, monitor either one or record from one tape recorder to another! A front panel headphone jack for low impedance headphones allows the enjoyment of programs in total privacy-

Stepped tone controls, separate in each channel permits the accurate repeatability of settings for any program source. The Mclntosh developed concentric switches give maximum flexibility in each channel without unnecessary clutter and complication.

Continuously variable loudness compensation allows the exact amount of compensation to suit your taste at any loudness level. Add high frequency and low frequency filters, a six-position input selector, seven-position mode selector, center channel level control, phase control and a balance control that does not affect the total loudness in the listening room and you have the useful flexibility Mclntosh has designed in the C 26. Added to these values is the complete protection from all service cost for three full years and you know why the Mclntosh C 26 is the best value in a solid state preamplifier, anywhere.

Only Mclntosh offers a free THREE YEAR SERVICE CONTRACT with each piece of equipment!

You can't pay us to service your C 26 for the first three years you own it. Both parts and labor are included in the contract.

 FACILITIES

BASS CONTROLS:  11 position concentric switches, separate controls for each channel, —20 dB to +16 dB at 20 Hz

TREBLE CONTROLS:  11 position concentric switches, separate controls for each channel, ±20 dB at 20,000 Hz

LOUDNESS;  Flat response, or continuously variable loudness equalization as volume level is reduced.

BALANCE:  When program material is out of balance, rotation of this co

VOLUME CONTROL; Precision "tracked" at all listening levels for true stereo balance. The AC ON/OFF switch is coupled with the volume control.

TAPE MONITOR SWITCH: Two switches, two position mechanically interlocked.

AC OUTLETS:  1 unswitched (Red), 4 switched

LF FILTER:  Flat, or roll-off below 50 Hz, 6 dB per octave, down 12 dB at 20 Hz

HF FILTER:  Flat, or roll-off above 5kHz, 6 dB per octave, down 12 dB at 20,000 Hz

SPEAKER SWITCH:

MAIN—Switch the MAIN Loudspeaker ON or OFF without affecting the performance of REMOTE speakers.

REMOTE—Switch the REMOTE loudspeaker ON or OFF without affecting the performance of the MAIN speakers.

INPUT SELECTOR:  6 positions AUX (auxiliary or spare), TAPE 2, TAPE 1, TUNER, PHONO 1, and PHONO 2

MODE SELECTOR:  7 positions: LEFT only to both speakers, RIGHT only to both speakers, STEREO REVERSE, STEREO, MONO, MONO to Left speaker only, MONO to Right speaker only.

HEADPHONES: For low impedance stereo headphones.

 SECONDARY CONTROLS

CENTER CHANNEL LEVEL Top of chassis control to adjust the output level of the left plus right program material at the CENTER CHANNEL output on the back panel.

PHASE CONTROL:  Electronically reverse phase in the left channel to correct "out of phase" program sources.

TRANSISTOR COMPLIMENT:  10 Silicon-planar transistors, 3 diodes

POWER REQUIREMENT:  117/125 volts, 50/60 Hz, 12 watts

MOUNTING:  Mclntosh developed professional PAN-LOC

ELECTRICAL SPECIFICATIONS

FREQUENCY RESPONSE:  20 Hz to 20,000 Hz,  +0 -0,5 dB

DISTORTION: Less than 0.1% at 2.5 volts output, 20 Hz to 20,000 Hz

INPUT SENSITIVITY AND IMPEDANCE:

Phono 1 and Phono 2 : 2 millivolts at 47,000 Ω for 2.5 volts output.

Aux, Tape 1, Tape 2, Tuner : .25 volts at 250,000 Ω for 2.5 volts output.

HUM AND NOISE:

Phono 1 and Phono 2 : 74 dB below 10 millivolt input, equivalent to less than 2 microvolts at the input terminals.

Aux, Tape 1, Tape 2, Tuner : 85 dB below rated output.

OUTPUT: 

Main : 2.5 volts with rated Input. Up to 10 volts can be developed without distortion.

Tape : 2.5 volts with rated input.

Phono : input signal of 10 millivolts produces 1.2 volts output.

Center Channel (L I R) : 2.5 volts. A level control adjusts the Center Channel output from -6 dB to +6 dB with respect to MAIN output.

OUTPUT IMPEDANCE:

Main : 2,000 ohms, designed to operate into 47,000 ohms or more

Tape Output : About 200 ohms, designed to operate into 47,000 ohms or more

Center Channel (L + R) : About 1,200 ohms, designed to operate into 47,000 ohms or more

MECHANICAL SPECIFICATIONS

DIMENSIONS:

Front panel : 16" wide by 57/16" high;

Chassis : 15" wide by 5" high by 13" deep, including PAN-LOC shelf and bach panel connectors;

Knob Clearance—1½" in front of mounting panel

WEIGHT:  18 pounds net, 28 pounds in shipping carton

FINISH:  Front Panel—Anodized goId and black with special gold/teal panel nomenclature illumination

CHASSIS:  Chrome and black

dbx Dynamic Range Expander

A dbx Dynamic Range Expander will significantly improve the sound quality of all your conventional records and tapes, and even FM broadcasts. First, it will increase the dynamic range of your music by as much as 50% to give you much of the excitement and impact of a live performance.

Second, a dbx Dynamic Range Expander can reduce annoying tape hiss and record surface noise by as much as 20 dB. Such a marked reduction in these distracting noises will dramatically increase your listening pleasure.

In short. you'll hear a sound quality you've never heard before from your entire music library. All because of the dramatic strides dbx has made with this remarkable technology.

A dbx Dynamic Range Expander is available for every system and every budget.

dbx 3BX Specifications

Expansion Ratio: Continuously adjustable from 1.0 to 1.5 (0 to 50% increase)linear in decibels

Dynamic Range: 100 dB (peak signal to weighted background noise)

Input Impedance: 50 kΩ

Input level: 300 mV nominal

Input level: 7 V RMS maximum

Output Impedance: 100 Ω (designed to drive 5 kΩ or greater)

Output Level: 7 V RMS (max. 20 Hz - 20 kHz)

Frequency Response: 20 Hz - 20 kHz ±0,5 dB at 1,0 expansion

Equivalent Input Noise: -85 dBV (unweighted, 20 kHz bandwidth, referenced to 1 V)

Total harmonic Distortion: 0,1%, typical at 1.0 expansion 20 Hz to 20 kHz

IM Distortion: 0,15% typical

Power Line Requirement: 117 V AC, 50 - 60 Hz

Power Line Consumption: 30 W

Dimensions (W x H x D): 17¾" x 3¾" x 10¼" (45,1 x 9,5 x 26,0 cm)

Weight (shipping): 12 lbs (5,45 kg)

dbx 3BX & 3BX-R

3BX

The 3BX is the most advanced dynamic range expander ever developed. It restores much of the drama, impact and excitement of a live performance by making loud passages louder and soft passages quieter.

Bass, midrange and treble frequencies are sensed in the music signal and expanded individually from extraordinary clarity of soud from even the most complex musical material. Three rows of LED's are used to monitor the degree of expansion in each of the three frequency ranges. An expansion level control lets you want, up to 50%. ANd, with the transition level control, you can adjust the threshold of expansion to vary the level above which the music signal is upward expanded. The 3BX is the most sophisticated and flexible dynamic range expander on the market. With, you can bring new life to your entire record and tape collection as well as dramatically increase your enjoyment of radio broadcasts. The 3BX is provided with a tape monitor loop to replace the one used on your receiver or preamp.

3BX-R remote Control

The 3BX-R not only allows you to operate your 3BX Dynamic Range Expander at a remote location, it also gives you more control capability. It includes a release time of the 3BX to the type of music you're playing - fast for high energy rock, slow for quiet symphonies. There's also a fade switch for automatically lowering the music level for fade down or raising the level for fade up - ideal for making professional fades during recording. Other features include a master volume control for your entire system, a 3BX bypass switch, and LED displays that indicate the operational mode of the 3BX. A 25-foot cable comes with the 3BX-R, and a 25-foot extension cable is available as an option.

3BX Specifications

Expansion Ratio: Continuously adjustable from 1.0 to 1.5 (0 to 50% increase)linear in decibels

Dynamic Range: 100 dB (peak signal to weighted background noise)

Input Impedance: 50 kΩ

Input level: 300 mV nominal

Input level: 7 V RMS maximum

Output Impedance: 100 Ω (designed to drive 5 kΩ or greater)

Output Level: 7 V RMS (max. 20 Hz - 20 kHz)

Frequency Response: 20 Hz - 20 kHz ±0,5 dB at 1,0 expansion

Equivalent Input Noise: -85 dBV (unweighted, 20 kHz bandwidth, referenced to 1 V)

Total harmonic Distortion: 0,1%, typical at 1.0 expansion 20 Hz to 20 kHz

IM Distortion: 0,15% typical

Power Line Requirement: 117 V AC, 50 - 60 Hz

Power Line Consumption: 30 W

Dimensions (W x H x D): 17¾" x 3¾" x 10¼" (45,1 x 9,5 x 26,0 cm)

Weight (shipping): 12 lbs (5,45 kg)

dbx 2BX

2BX

If you want dynamic range expansion technology at a lower cost than the 3BX, then the 2BX is the model for you. Its somewhat simpler circuitry divides the frequencies into two bands instead of three. Music integrity of the bass and treble is maintained so that dynamic range of highly percussive music, either rock or classical, without causing the high and middle frequencies to track the low frequency dynamics of the music. The 2BX has two rows of LED's for monitoring expansion in each of its bands.

As with the 3BX, you can select the expansion you want (up to 50%) and adjust the transition level using the two controls provided for these purposes. Except for the most critical applications, the 2BX offers an ideal choice for increasing the dynamic range of your stereo system and your enjoyment of recorded music. Like the more expensive 3BX, the 2BX features PRE/POST recorder selection to allow you to expand either before or after the tape recorder connected to the 2BX. This tape loop replaces the one used on your receiver or preamp.

Specifications

Expansion Ratio: Continuously adjustable from 1.0 to 1.5 (0 to 50% increase)linear in decibels

Dynamic Range: 100 dB (peak signal to weighted background noise)

Input Impedance: 50 kΩ

Input level: 300 mV nominal

Input level: 7 V RMS maximum

Output Impedance: 100 Ω (designed to drive 5 kΩ or greater)

Output Level: 6 V RMS (max. 20 Hz - 20 kHz)

Frequency Response: 20 Hz - 20 kHz ±0,5 dB at 1,0 expansion

Equivalent Input Noise: -85 dBV (unweighted, 20 kHz bandwidth, referenced to 1 V)

Total harmonic Distortion: 0,1%, typical at 1.0 expansion 20 Hz to 20 kHz

IM Distortion: 0,15% typical

Power Line Requirement: 117 V AC, 50 - 60 Hz

Power Line Consumption: 20 W

Dimensions (W x H x D): 17¾" x 3¾" x 10¼" (45,1 x 9,5 x 26,0 cm)

Weight (shipping): 8,3 lbs (3,8 kg)

dbx 1BX

1BX

Like its 3BX and 2BX counterparts, the 1BX can increaste the dynamic range of music from records, tapes and radio broadcasts by a factor of up to 50%. Its RMS level detector incorporates an infrasonic filter to prevent mistracking caused by turntable rumble or record warp. Ten LED's monitor upward and downward expansion and, as with the 3BX and 2BX, a transition level is provided to select the level above which the music signal is upward expanded and below which it is downward expanded. because of its less complex circuitry, the 1BX is priced so anyone can affard the benefits of increased dynamic range. The1BX provides a tape monitor loop to replace the one used on your receiver or preamp.

Specifications

Expansion Ratio: Continuously adjustable from 1.0 to 1.5 (0 to 50% increase)linear in decibels

Dynamic Range: 100 dB (peak signal to weighted background noise)

Input Impedance: 50 kohms

Input level: 300 mV nominal

Input level: 7 V RMS maximum

Output Impedance: 100 ohms (designed to drive 5 kohm or greater)

Output Level: 6 V RMS (max. 20 Hz - 20 kHz)

Frequency Response: 20 Hz - 20 kHz ±0,5 dB at 1,0 expansion

Equivalent Input Noise: -85 dBV (unweighted, 20 kHz bandwidth, referenced to 1 V)

Total harmonic Distortion: 0,1%, typical at 1.0 expansion 20 Hz to 20 kHz

IM Distortion: 0,15% typical

Power Line Requirement: 117 V AC, 50 - 60 Hz

Power Line Consumption: 10 W

Dimensions (W x H x D): 11" x 3¾" x 10¼" (27,8 x 9,5 x 26,0 cm)

Weight (shipping): 4,5 lbs (2 kg)

Sansui RA 700

Solid State reverbration amplifier with Rainbow. New dimension in the stereo sound. This double pickup unit brings vibrant, echo-chamber effect normally found only in professional recording studios. Continuously adjustable reverb time with rainbow visual indication. It can handle two tape decks simultaneously, assing depth and realism to records,broadcasts or your own voice. Controls are extremely simple to use. Rich looking cabinet matches finest componenets.

Specifications:

Harmonic Distortion:  0.2%

Frequency Response:  20 - 30,000 hz

Signal-to-Noise Ratio:  65 dB

Reverbration Time:  1,9 - 3,2 sec.

Dimensions (W xH x D):  280 x 125 x 264 mm

Weight:  2,4 kg

Finish:  Simulated walnut grain

H.H. Scott 135 Stereo-Daptor

H.H. SCOTT model 135 STEREO-DAPTOR

Stereomaster Adapter circa 1957-1960

Add-on Control Center, Mono-to-Stereo Adaptor
The 135 was a completely passive device, that provided central control of two mono amplifiers.Controls included: AC power switching, Master Volume, Loudness compensation, stereo/mono function selector. Introduced the very narrow "H" case/chassis, later used on the 335 MPX Adaptor.The 135 was an innovative and inexpensive "stop-gap" solution that introduced the then-new (1957) concept of two-channel LP
stereo phono sources.It permitted Scott's installed base of monophonic users to protect their investment, while Scott engineers worked on integrated
Stereomaster designs like the 130 and 299.

Stereo-Dapter 135Expand to stereo by adding the Stereo-Daptor and a new H.H. Scott monophonic amplifier to your present system.The Stereo-Daptor permits control of two separate amplifiers from a central point. A Master Volume Controladjusts the volume levels of both channels simultaneously. Special switching lets you play stereo, reverse stereo, use your stereo pickup on monaural records, or play monaural program material through both amplifiers at the same time. This gives you the full power of both amplifiers. No internal changes are required when used withH.H. Scott amplifiers

This is a pristine example of the model 138 Stereo-Daptor. This component was made to be a "bridge" for H.H. Scott owners to add another mono amp to their existing mono amp for a true stereo sound and have one central control.

Once H.H. Scott introduced true stereo amps, this item was dropped from production.