Pioneer CT-F 1000

Pioneer Model CT-F 1000,

a stereo Dolby cassette deck with monitoring (separate recording and playback) head configuration, in metal case.

It is a beautiful machine. Not only does it glitter with Pioneer's traditional care in front-panel detailing, but without going beyond that panel the user can see the two-in-one head, and feel the elegance of the click-stopped level knobs and of the solenoid-controlled drive system via the transport buttons.

The drive speed is unaffected by line-voltage changes and has extremely low wow and flutter in the lab's measurements. Not only that, but its playback speed is adjustable, from +13,4% to -10,6% of normal , or approxmately a whole tone in either direction – to tune the recording to a live performance or to correct tapes made on off-speed machines. The adjustment system does not affect recording speed and has a very positive detent in the control at the normal playback speed, which, while 1,3% fast in absolute terms, matches the recording speed exactly.

The metering system strikes us as very good, admirers of peak metering though we are. The meters themselves are of the averaging type with good ballistics and wide calibration range (from -40 to +5). In addition, there is a peak LED that triggers at the +5 level.

Playback response from the standard test tape is unusually fine. The chrome-tape record/play response is extremaly flat, with extended, smooth bass and a high end that remains very flat up to the beginning of rolloff, which occurs at a higher than average point. Ferrichrome response is a little less flat across the band but is flatter than most ferrichrome curves and extends very high at the top end.

Specifications

Speed accuracy: record and detented playback position 1,3% fast no measurable difference at 105, 120 and 127 VAC

Wow and flutter: playback 0,05%, record/play 0,08%

Rewind and Fast-forward time (C-60): 58 sec

S/N ratio (re 0VU, Dolby off,CBS weighting):

playback: L ch 54 dB, R ch 54,5 dB

record/play: L ch 50,5 dB, R ch 51 dB

Erasure (333 Hz at normal level): 70 dB

Crosstalk (at 333 Hz):

record left, play right: 43 dB

record right, play left: 43 dB

Sensitivity (re DIN 0 VU):

line input: L ch 64 mV, R ch 67 mV,

mike input: L ch 0,33 mV, R ch o,33 mV

Meter action (re DIN 0 VU):

L ch: 6 dB high, R ch: 7 dB high

Maximum output (re DIN 0 VU):

L ch: 0,95 V, R ch: 1,0 V

Dimensions: 16-1/2 x 7 inches (front), 13 inches deep

Pioneer PL-530

Pioneer PL-530

Features

High Torque DC Servo Motor Uses Hall Elements

The DC brushless Hall motor combines Hall elements with a high torque motor and a semi-conductor circuit. Hall elements, production-engineered by Pioneer, are used to switch the polarity in the motor. Since purely electronic commutation is used for switching the motor drive circuit, harmful noise is not generated, and smooth, even rotation can be obtained with high durability. By combining precision engineering with high fidelity circuit technology, excellent characteristics of 70 dB (DIN-B) or more S/N, and 0,03% (WRMS) wow and flutter have been achieved.

Two-Motor Fully Automatic Turntable Uses Precision Geared Motors

A specialized precision geared motor is used for the lead-in and return functions of the tonearm. Since the return function employs the velocity detector principle, stable operation is consistently maintained.

Newly Developed High-Sensitivity S-Shaped Tonearm

High sensitivity angular contact bearings are used for both vertical and horizontal axis movement of the tonearm, so that there is minimum play and friction. High sensitivity and durability are obtained. Both an anti-skating mechanism and a lateral balance adjustment are built in, therefore, even when a low tracking force, high compliance cartridge is used, the unit turns in an excellent tracking performance. An independent tonearm lift device is incorporated in the fully-automatic mechanism, so the stylus can be raised easily even during playing without damage to the stylus or record.

Panel layout Facilitates Easy Operation

This layout places the speed adjusters, function buttons, record size selector, and arm lift lever all at the front of the unit, concentrating controls for eay operation. A headshell stand is built-in for a spare cartridge. The dust cover uses free-stop fastener hinges.

Cabinet Designed for Sound Quality

The power source transformer and operating mechanism are all mounted in the hard particle board cabinet, while the platter and tonearm are kept floating above the cabinet by the floating suspension, contributing to the improvement of the tone quality. External vibrations are doubly damped by the insulators to obtain a very high resistance against acoustic feedback (howling).

Specifications

Motor and Turntable

Motor: Brushless DC servo Hall motor

Turntable Platter: 330 mm diam. Aluminum alloy die-cast

Moment of Inertia: 260 kg/cm (including platter mat)

Speeds: 33-1/3 and 45 rpm

Speed Control Range: ±2% (individual control for all speeds)

Wow and Flutter: Less than 0,03% (WRMS)

Signal-to-Noise Ratio: More than 70 dB (DIN-B)

Tonearm

Type: Static-balance type, S-shaped pipe arm

Effective Arm Length: 221 mm

Overhang: 15,5 mm

Usable Cartridge Weight: 4 g (min.) to 4,5 g (max.)

General

Power Requirements: AC 120 V, 60 Hz

Power Consumption: 7 W

Dimensions (W x H x D): 480 x 170 x 390 mm, (18-29/32 x 6-11/16 x 15-11/32 in)

Weight: 10 kg, (22 lbs)

Pioneer M-22

The die-cast aluminum radiator, die-cast chassis employing class A stereo power amplifiers.

The streamer A class action is adopted. A class operation and is shed every idle current when no signal is still a lot of transistors, the method uses only transistors operating range with good linearity. A work-class power utilization is low, but increasing the amount of heat, the two push-pull output transistors are synthesized and amplified to obtain the same waveform and bottom, B strain and the switching amplifier is not salmon crossover distortion does not occur.

M-22 to A-level circuit is run, NFB removed the DC circuit capacitor amplifier configuration, the DC by the time constant of the formation of the loop without NFB, a flat phase characteristics were obtained through ultra-low, stable NFB operation are obtained. This A-class operation and streamer configurations DC amplifier,i realized the middle and high range and excellent bass response without distortion sense.

The M-22 was a pure Class A amplifier that was rated at 30 watts per channel. Pioneer stated in its Series 20 brochure: "Class-A circuits are used throughout to reduce distortion. If operated in Class-B the M-22 would deliver no less than 150 watts per channel--five times as much--with so-so distortion. The most sophisticated circuit construction yet developed by Series Twenty is reflected here, along with truly first-class parts and components to asssure you're getting the real advantages of such design."

Like the C-21 Preamplifier, the M-22 used metallized polyester capacitors and nichrome-vaporized, metal-coated resistors. Pioneer utilized a dual mono circuit design and component layout, with a massive power transformer for each channel, coupled with two equally large 22,000 microfarad electrolytic capacitors per channel. The left and right channel circuitry was mounted to large die-cast finned aluminum heatsinks. All this was mounted to a rigid die-cast aluminum chassis.

What was striking about both the M-22 and M-25 amplifiers was, of course, their appearance. Practically all amplifiers in the late 1970s and early 1980s were fully enclosed by sheetmetal on all sides, with a ventiated cover. Pioneer took the minimalist approach, indeed, a purely industrial design approach to the design of these amplifiers. All the key components were visible, with the left and right channel components grouped in a mirror image. This really appealed to audiophiles who truly are intrigued by the "innards" of their electronic components.

Specyfications

Integrated systems: Two-stage differential, PPdrive, two-stage Darlington, parallel PP. Net complementary OCL (A-class operation, DC amplifier configurtion)

Effective output (both ch driven): 30 W + 30 W (10 Hz - 30 kHz, 8Ω)

Harmonic distortion (10 Hz - 30 kHz, 8Ω):

RMS output: 0,01%,

15 W output: 0,005%,

1 W output: 0,005%

Intermodulation distortion (50 Hz: 7 kHz=4:1,8 Ω):

RMS output: 0,005%,

15 W output: 0,003%,

1 W output: 0,003%

Output bandwidth (IHF, both ch driven): 5 Hz - 100 kHz (strain rate of 0,01%)

Frequency: 2 Hz - 150 kHz +0 -1 dB(1W output)

Input: 1V / 50kohms

Output speakers: 8 ohms

Damping Factor: 60 (20 Hz - 20 kHz, 8 ohms)

SN ratio (IHF, A network) Short circuit: 106 dB

Semiconductor: Transistor: 44 pieces, Diode, other: 62 piece

Power supply: 100V - 220V, 50Hz/60Hz

Power consumption: 10W

Dimensions (W x H x D): 420 x 158 x 370mm

Weight: 22 kg

Pioneer C-21

Pioneer designed the C-21 Preamplifier to work in conjunction with the M-22 or the M-25 amplifier in the Series 20 line. The control layout was simple and uncluttered. Front left to right, they were Power, Gain (left and right), Tape monitor, Volume, Cartridge Load (adjustable for resistance and capacitance), and selector knob for Phono, Subsonic Phono, Aux1 and Aux 2.

Pioneer stated the C-21 was mainly assembled by hand using the finest grade circuit parts. These included Nichrome-vaporized, metal-coated resistors, metallized polypropylene capacitors, metallized polyester film capacitors, super-low noise electrolytic capacitors, and a large power supply transformer having an oriented core with separate secondary windings for the left and right channels with additional shielding to further reduce crosstalk. Even the contact points inside each gain pot were silver palladium treated and resistors were palladium and silver alloy. The total number of semiconductors included 36 transistors and 47 diodes. The quality of the electronic parts that went into the C-21 made for a wonderfully transparent and accurate preamplifier.

Circuit system:

Equalizer-amplifier Circuit System: 2 steps of differentials current mirror amplification Class-A SEPP

Control-amplifier Circuit System: 2 steps of differentials current mirror amplification Class-A SEPP

Input terminal:

Phono: 2.5mV/100 ohm, 10kohm, 25kohm, 50kohm, 75kohm, 100kohm

Cartridge load capacity: 100pF, 150pF, 200pF, 300pF, 400pF, 500pF

AUX1, 2, Tape Play:150mV /, 50kohm

Phono maximum permissible input: 300mV (1kHz, THD 0.01%)

Output-terminal:

Tape Rec: 150mV / 1kohm

Output (RL: 50kohm): 1V/450 ohm (rate), 20V/150 ohm (MAX)

THD (20 Hz - 20 kHz):

Phono: 0.006% (at the time of 1V output Volume -20 dB, gain-control 0 dB)

AUX: 0.005% (at the time of 1V output gain-control 0 dB)

Frequency :

Phono: 20 Hz-20 kHz ±0.2 dB

AUX: 10 Hz-100 kHz +0 -0.2 dB, 3 Hz - 300 kHz +0 -1.0 dB

SN ratio (IHF, A network) Short circuit:

Phono: 80 dB (output 1 V:00)

AUX: 100 dB (output 1 V:00)

Phono Subsonic Filter: 15 Hz, 6 dB / oct

Semiconductor: Transistor: 36 pieces, Diode, other: 47 piece

Power supply: 100V - 220V, 50Hz/60Hz

Power consumption: 10W

Dimensions (W x H x D): 420 x 81 x 357mm

Weight: 6,3 kg