Technics RS-1506 US specifications

General

Connections

Tech nical data

Special equipment

Accessories (pictures see below and under RS-1700)

Typical signs of aging:

Here are a few repair reports on errors on the machine, with the request to supplement them if someone has ever had problems with the device:

Mackern.de Read Hifi Tech nics RS 1506US

Manufacturer: Tech nics
Model: RS-1506US
Years of manufacture: 1977 to 1986
Manufactured in: Osaka, Japan
Color: black
Remote control: optionally with RP-9690 (cable remote control) or RP-070 (infrared remote control)
Power consumption: 120 W
Dimensions: width:456 mm, height: 446 mm, Depth: 258 mm
Weight: approx. 25 kg
Factory price approx.: 2'988 DM
- Option 2-track head carrier RP-2224: 399 DM
- Option 4-track head carrier RP-2422: 399 DM

Option 2-track headgear RP-2224: 399 DM
Option 4-track headgear RP-2422: 399 DM

Number of Outputs: 2
- Headphones: 80 mV/8Ohm
- Line Out: 0.5V ( OVU)/on 22 kOhm or more
- DIN: No
Number of Inputs: 3
- Microphone: 0.25mV (-72dB)/4.7kOhm
- Line In: 60 mV (-24 dB)/150 kOhm
- Trough Out: 60 mV (-24 dB)/150 kOhm
- >

Headphones: 80 mV/8Ohm
Line Out: 0.5V (OVU)/on 22 kOhm or more
DIN: No

Microphone: 0.25mV (-72 dB)/4.7kOhm
Line In: 60 mV (-24 dB)/ 150 kOhm
Trough Out: 60 mV (-24 dB)/150 kOhm

max.Coil diameter: 26.5 cm
drive: direct drive, brushless DC motor with phase-rigid quartz scheme for the sound wave, two direct-drive, brushless DC motors, with tension control for winding plate
heads: 4 heads (head carrier: RP-2422)
tracks: 4
tape speed: 9.5 cm/s, 19 cm/s, and 38 cm/s
flutter:
- at 9.5 cm/s: 0,018% (WRMS ) +/-0,035% DIN)
- at 19 cm/s: 0,03% (WRMS ) +/-0,06% DIN)
- at 38 cm/s: 0,06% (WRMS ) +/-0,12% DIN)
pitch fluctuations:
overall frequency response:
- at 9.5 cm/s: 20 - 15,000 Hz, +/-3 dB
- at 19 cm/s: 20 to 25,000 Hz, +/-3 dB
- at 38 cm/s: 30 - 30,000 Hz, +/-3 dB
signal-to-noise ratio:
s / n ratio (aufsprech level = 3% total harmonic distortion):
- at 9.5 cm/s: 64 dB
- at 19 cm/s: 66 dB
- at 38 cm/s: 66 dB
total harmonic distortion (0 VU): 0,8%
equalization:
crosstalk attenuation at 1 kHZ in stereo mode: 50 dB
delete damping: at 19 cm/s: 65 dB
premagnetization and deletion frequency: 120 kHz

at 9.5 cm/s: 0,018% (WRMS ) +/-0,035% DIN)
at 19 cm/s: 0,03% (WRMS ) +/-0,06% DIN)
at 38 cm/s: 0,06% (WRMS ) +/-0,12% DIN)

at 9.5 cm/s: 20 - 15,000 Hz, +/-3 dB
at 19 cm/s: 20 to 25,000 Hz, +/-3 dB
at 38 cm/s: 30 - 30,000 Hz, +/-3 dB

at 9.5 cm/s: 64 dB
at 19 cm/s: 66 dB
at 38 cm/s: 66 dB

speed fine control (recording/playback): +/-6%
four-digit tape counter, at 38 cm/s to display the real time, in other belt speeds must be converted.
"Insulated Loop" Tape guide

RP-9100 Flight-Case (1)
RP-9110 Dust cover made of hard plastic for mounting on mounted coils (2)
RP-9120 Wooden side parts (Rio rosewood, veneered, thickness of the side parts: 3 cm)
RP -9130 Consoles for shelf installation (3)
RP-9690 Cable remote control for RS-1500US and RS-1506US (4)
RP-9170 Cable remote control for RS-1700
RP-070 Infrared remote control with receiver and transmitter (see RS-1700)
RP-10A 26.5 cm Empty coil made of aluminum (5)
RP-2224 half-track sound head carrier (6)
RP-086 Battery adapter for 24 V DC operation

The machine is not suitable for E-band!

Tech nically, the machine is identical to the RS-1500US. The sound head carrier for the RS-1500US is the RP-2224 (2-track recording playback/4-track playback). In the case of the RS-1506US, the sound head carrier is the RP-2422 (4-track recording playback/2-track playback). Both head carriers can be replaced at will under the two machines by loosening three screws. The head carriers RP-2224 and RP2422 also work on an RS-1700, whereby the autoreverse function is switched off here.

Worn brake pads. The felt pads of the winding motor brakes are usually worn out and the tape throws loops when switching from rewinding mode to play mode. Due to the loop formation, the button control switches off and can only be used again when the tape is re-tensioned. A remedy can be made if you replace the old felt brake pads with suede. How to do this is described in detail under [Repair Tips for Tech nics RS tape Machines].
Squeak of the tape counter drive. The drive pulley of the belt counter belt causes loud squeaking noises when rewinding. These disappear again when the axle of this drive pulley is oiled.
Worn out feathers. If the machine has been standing around for years with the belt clamped, the springs of the idler pulleys have worn out. The machine then no longer switches off when the belt has been unwound, as the guide pulleys are no longer pulled up completely. The only remedy here is new springs.
In the black plastic caps of the toggle switches for monitor, tape select and rec mode there are small metal expander springs for attaching and fixing the caps. Over the years, the plastic becomes brittle and bursts, with the springs pushing the plastic apart and the caps falling off. Burst plastic caps can be repaired if they are glued together with 2-component glue and then covered with a tight, black heat-shrink tube and heated with hot air. Without the heat shrink tube, the glued plastic caps will not last in the long run, no matter what glue you use. As a replacement for the plastic caps, you can also use aluminum caps from old pioneer devices (SA-XXXX or SX-XXXX) that fit on the switch tongues. See picture: SA-300K.
Spare parts and accessories are no longer available from Panasonic or Tech nics
The AC power supply of the European version is switchable from 220V/240V to 110V/125V 50/60Hz. The American version is only designed for 110V/125V, but can also be operated on the 220V/240V mains via an external transformer (so-called stepdown converter). The only important thing about such a converter is that it can handle the power consumption of the machine.
Sending such a machine is a very delicate matter because of its high weight, since the postal or parcel services are not exactly squeamish about such parcels. I therefore recommend a personal handover, even if you have to drive a few kilometers for it. Well packed, the Tech nics even survives a trip across the pond. However, the prerequisite for this is that the front, rear and side walls are covered with sufficiently thick polystyrene plates. If the machine is packed only in crumpled newspapers and polystyrene chips, the feet of the back wall or bottom, or the switches, rotary knobs or even the head carrier on the front will inevitably punch into the machine when the package is thrown somewhere.

Matching devices from Tech nics:
- Amplifier: SU-7300K, SU-7700K
- Tuner: ST-7300K
- Receiver: SA-300K, SA-400, SA-500, SA-600

Amplifier: SU-7300K, SU-7700K
Tuner: ST-7300K
Receiver: SA-300K, SA-400, SA-500, SA-600

Other models of the same series:
Tech nics_RS-777
Tech nics_RS- 10A02
Tech nics_RS-1500_US
Tech nics_RS-1500_S4
Tech nics_RS-1506_US
Tech nics_RS-1700
Tech nics_RS-1800

Accessories: 1: Flight case RP- 9100, 2: Dust cover RP-9110, 5: 26.5cm Aluminum coil RP-10A

Instructions for disassembling and cleaning the switches: Switch problems

Defect in the control of the winding motors. Recognizable by unevenly running or stationary coils. Possible cause see here: Tech nics RS-1506US and here: Technics RS-1506 US

IC Logic Control Button control no longer works. Possible cause see here: A Real Recorder
Other general reports on buying tips, care and repairs of Tech nics tape machines see here: [RS-1500US]

Mackern.de - Read Hifi Tech nics RS 1506US Mackern.de Read Hifi Tech nics RS 1506US

Advertising brochure for the Technics RS-1700 , RS1506US and RS-1500US as a pdf file in color: Technics RS-1700 , RS1506, RS-1500
User Manual (free as pdf file): Tech nics Tape Deck RS-1500US RS-1506US a956e985535b8d57732d14dfa0e4c71ating Instruction
Tech nics RS tape Machines and Accessories: The Vintage Knob
Silver RS-1700: Japanese side
Oliver's Tech nics tape machine collection
As is well known, it is possible to argue about taste, at least the Black Magic does not look so bad Modified Tech nics tape machines The silvering of the complete front panel of an RS-1700 should cost almost $ 1000.

Technics RS-1506 US