Стерео усилитель OTTO DCA-650/TRIO KA-8004/Trio-KA-7006

В отличном состоянии усилитель. Полностью рабочий. Обслуживание сделано.

100 Вольт, понижающий трансформатор в комплекте.

OTTO (SANYO) DCA-650 цена 490e

Японская версия 100 Вольт + понижающий трансформатор. Отличный естественный звук! Переигрывает многие более дорогие и более новые усилители по качеству звука.

Specifications

Power output: 43 watts per channel into 8Ω (stereo)

Frequency response: 5Hz to 100kHz

Total harmonic distortion: 0.1%

Damping factor: 60

Input sensitivity: 2.5mV (mic), 2.5mV (MM), 140mV (line)

Signal to noise ratio: 70dB (mic), 70dB (MM), 90dB (line)

Output: 140mV (line), 35mV (DIN), 1.2V (Pre out)

Speaker load impedance: 4Ω (minimum)

Dimensions: 420 x 130 x 330mm

Weight: 10.2kg

TRIO KA-8004 цена 490e

Японская версия 100 Вольт + понижающий трансформатор. Одна из первых линеек усилителей этой марки. Отличный звук! Превосходит многие более дорогие и более новые усилители по качеству звука.

Model Rating

Type Solid-state stereo premain amplifier

Power Amplifier Unit

Effective power

20 Hz to 20 kHz, both channel operation : 55W + 55W (8 Ω)

1 kHz Single channel operation : 100W/100W (4 Ω)

80W/80W (8 Ω)

Both channel operation : 85W + 85W (4 Ω)

60W + 60W (8 Ω)

Music Power (IHF) 300W (4 Ω)

180W (8 Ω)

Total harmonic distortion factor (8 Ω) 0.2% (at rated output)

0.05% (Rated Output -3dB)

Cross modulation distortion factor 0.2% (at rated output)

0.05% (Rated Output -3dB)

Output Bandwidth (IHF) 6 Hz to 45 kHz

SN ratio (closed circuit) 110dB

Residual noise (8 Ω) 0.3 mV (0.012 μ W)

Input Sensitivity / Impedance 1.0V/50k Ω

Optimum load impedance 4 Ω ~ 16 Ω

Damping factor 50 or more

Output terminal Speakers and headphones : 4 Ω ~ 16 Ω

Preamplifier Section

Input Sensitivity / Impedance Phono1 : 2.5mV/30k Ω, 50k Ω

Phono2 : 2.5mV/50k Ω

Tuner, AUX, Tape PlayA, B : 150mV/100k Ω

MIC : 2.5mV/50k Ω

Signal-to-noise ratio Phono1, 2 : 70 dB

Tuner, AUX, Tape PlayA, B : 80 dB

MIC:70dB

Maximum Allowable Input (1 kHz) 560mV(P-P)

Output Level / Impedance

Tape Play A, B Pin : 150mV/100 Ω

Din : 40mV/50 Ω

Pre Out: 1V/100 Ω

Frequency characteristic Tuner, AUX, Tape Play : 20 Hz to 50 kHz + 0 -2dB

MIC : 50 Hz ~ 10 kHz + 0 -1dB

Tone control

bass: 100 Hz ± 6 dB (turnover : 200 Hz)

100 Hz ± 6 dB (turnover : 400 Hz)

Treble: 10 kHz ± 10 dB (Turnover : 3 kHz)

10 kHz ± 6 dB (Turnover : 6 kHz)

Filter Low : 20 Hz, 40 Hz, 18dB/oct.

High : 7 kHz, 6dB/oct.

Loudness control (rated output -30dB) 100Hz:+8dB

10kHz:+3dB

Power supply voltage 100 VAC / 117 V, 50Hz/60Hz

AC outlet Power switch interlock : Route 3, 300W

Power switch not linked : 1 system, 100W

Rated power consumption (Electrical Appliance and Material Control Law) 135W

External dimensions Width 435x Height 153x Depth 300 mm

Weight 12.9kg

Trio KA-7006 450e

Японская версия 100 Вольт + понижающий трансформатор. Одна из первых линеек усилителей этой марки. Звучит великолепно! Превосходит многие более дорогие и более новые усилители по качеству звука.

Сommentary

Stereo pre-main amplifier with all stages directly connected + pure complimentary service circuit.

The power amplifier consists of an all-stage direct-coupled circuit from the first stage to the last stage without the interstage coupling capacitor, a pure complimentary service circuit using the Darlington method of PNP-NPN for the output stage, and a ± 2 power supply system using the first stage differential-type.

As a result, various characteristics in the low frequency range have been thoroughly improved, and stable output has been obtained over the entire audible frequency range.

A limiter protection circuit is used to protect the transistors, and a relay is used to protect the speakers and prevent shock noise when the power is turned ON/OFF.

When the output terminal is short-circuited, the limiter level is lowered within 100m ・ sec to protect the transistor.

The equalizer uses a 3-stage direct-coupled first stage differential circuit.

The tone control circuit uses a DLOA (dual low-noise operational amplifier).

The DLOA consists of a first stage differential amplifier, a buffer, a 3-stage class A drive, and a pure complimentary service. This realizes a high dynamic range, high input impedance, high power utilization factor, low impedance, and low distortion factor. Shock noise is also suppressed because the DC current at the output terminal is 0 v.

In addition, a tone control defeat switch is provided.

The low filter uses a subsonic filter and a rumble filter.

Also, a scratch filter is used for the high filter.

Equipped with audio muting and mode selector.

Equipped with 4 ch input / output terminal.

Equipped with a microphone terminal.

Since around 1975, carrying handles have been sold as a separately sold option.

Model Rating

Type Solid-state stereo premain amplifier

Power Amplifier Unit

Effective power

20 Hz to 20 kHz, both channel operation : 50W + 50W (8 Ω)

1 kHz Single channel operation : 90W/90W (4 Ω)

65W/65W (8 Ω)

Both channel operation : 70W + 70W (4 Ω)

55W + 55W (8 Ω)

Music Power (IHF) 250W (4 Ω)

160W (8 Ω)

Total harmonic distortion factor (8 Ω) 0.3% (at rated output)

0.05% (Rated Output -3dB)

Cross modulation distortion factor 0.3% (at rated output)

0.05% (Rated Output -3dB)

Output Bandwidth (IHF) 6 Hz to 45 kHz

Residual noise (8 Ω) 0.5mV

Damping factor (8 Ω) 30

Optimum load impedance 4 Ω ~ 16 Ω

Preamplifier Section

Input Sensitivity / Impedance Phono1, 2 : 2.5mV/50k Ω

Tuner, Aux, Tape playA, B : 150mV/50k Ω

Mic : 2.5mV/50k Ω

4 ch input : 150mV/50k Ω

Signal-to-noise ratio (IHF-A network) Phono1, 2 : 84 dB (input 5 mV)

Tuner, Aux, Tape PlayA, B : 95 dB

4ch input:95dB

Output Level / Impedance Tape rec Pin : 150mV/50 Ω

Tape rec Din : 40mV/70k Ω

4 ch out : 150mV/50 Ω

Maximum Allowable Input (1 kHz, RMS) Phono:250mV

Frequency characteristic Tuner, Aux, Tape play : 10 hz to 20 khz + 0 to 0.5 db

Phono : RIAA deviation ± 0.5 dB

Tone control Bass : ± 10 dB (100 Hz)

Treble : ± 10 dB (10 kHz)

Filter Low : 20, 40 Hz, 12dB/oct.

High : 7 kHz, 6dB/oct.

Loudness control (Volume-30dB) +8dB(100Hz)

+3dB(10kHz)

AC outlet Power switch interlock : 2 systems

Power switch not linked : 1 system

Power supply voltage 100 VAC, 50Hz/60Hz

Rated power consumption (Electrical Appliance and Material Control Law) 140W

External dimensions Width 435x Height 157x Depth 300 mm

Weight 11.8kg