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Summary of Contents for TANDBERG Huldra 8

  • Page 2 Introduction This translation contains all pages from the original Norwegian Huldra 8 owner’s manual with an English translation on the same page. In addition, I have added page 19 with translated figures. The English text is kept close to the original Norwegian text written in 1965. Text in italics are my own comments and annotations.
  • Page 3 First, you should get good antennae for AM and FM At the rear of the unit, you will find sockets for connection of antennae. Wire antenna. The unit is designed for excellent reception with moderate antenna lengths, but you will get the optimum result with a 15-20 m long wire antenna. Attach the earth connection to the nearest cold water pipe using a clamp.
  • Page 4: Operation

    Operation Power. The power is turned on when one of the push-buttons (except buttons “Fjern” (Distant) and “Mono”) is pressed. The power is switched off when button “AV” (Off) is pressed. Tuning. Selecting one of the AM buttons connects the tuning dial to the AM frequency indicator while depressing the FM button connects the tuning dial to the FM frequency indicator.
  • Page 5 “App.” is short for “Apparat” meaning Apparatus or Device. The main speakers are denoted App. because the Huldra 8-56 has a speaker pair integrated into the Apparatus, and Tandberg must have decided to use the same names and markings for 8-55 and 8-56.
  • Page 6 Tone controls (cont’d) Normal: The entire frequency range is reproduced at even levels Normal + Bass: Enables physiological bass correction (Loudness) Variabel Bass og Diskant: Adjust bass and treble independently. Even frequency curve when both bass and treble are set to 0. Variabel Bass og Diskant + Bass: Same as above, with the addition of physiological bass correction (Loudness) as for “Normal + Bass.”...
  • Page 7 Connect antennae, tape recorder and turntable using DIN plugs or phono plugs, where available. Select correct pick-up type; magnetic (MM), ceramic or crystal type. Speakers Huldra 8 is optimized for 4 ohm speakers, but will handle loads from 2-8 ohm with little impact on output power. Dipol FM antenna...
  • Page 8 (A discussion on serial- and parallel connection of several speakers and the resulting impedance is not translated, as it is not considered relevant today.) It is recommended to use twisted speaker cables, especially on left channel when using the intercom functionality. If not, voltages will be induced in the left speaker cable causing hum when used as a microphone.
  • Page 9 Recording radio When a tape recorder is connected to your Huldra 8, it will always be ready to record from the radio. All you have to do is to start recording. Since the signal is tapped off before the main amplifier, the recording is independent of the volume control, tone controls and speaker selector setting.
  • Page 10 Double Programs (Playing two different sources simultaneously) You may listen to a radio program in channel 1 while, at the same time, listen to the tape deck or record player in channel 2. To achieve this, press the button for the preferred wave band and either “Bånd”...
  • Page 11 Huldra 8-56 and Hi-Fi System 113/106-10 are designed according to the latter principle. As the Huldra 8 has a power output of 2x10 Watt, you will still have more than sufficient power for an ordinary sized living room.
  • Page 12 ° Usually, a straight frequency curve can be achieved within a room angle of 60 . In an ordinary room without too much damping, the higher frequencies will be correctly reproduced in the entire room if the frequency curve in the amplifier is increased by ca. 10 dB by 10 kHz. When selecting speakers, it may be wise to take the following into consideration: An instrument or group of instruments which has its maximum sound effect in the medium frequencies, will be reproduced with a greater sound power than, e.g., a church organ, which can...
  • Page 13 Dimensions: width 18 cm, height 23 cm and depth 23 cm. Teak enclosure. Internal volume: 6.5 liters. 6.5” woofer: HT 113, 2” tweeter: HT 106. Impedance at 400 Hz: 4 Ohm. Max. continuous power: 8 watt. Efficiency (frontal radiation only): 0.5%. Resonant frequency: 90 Hz. Frequency range: 60-16000 Hz.
  • Page 14: Technical Data

    Technical Data 5 vacuum tubes: ECH81, EAF 801, EF 89, ECC 85, EM 87 20 transistors: 1 off SE 1002, 5 off U 3962 (SE 4010), 4 off SE 4001, 2 off SE 6001, 2 off AC 127, 2 off AC 128 (AC 152) and 4 off AS 150 (AD 149) 6 diodes: 2 off 1N 542 (AA 113), 2 off 1S 920, 1 off OA 81 and 1 off BA 124.
  • Page 15 FM Multiplexing: Huldra 8 is prepared for FM stereo reception. There is dedicated space for a connector for an FM stereo decoder. The stereo indicator lights up on stereo reception. Duplex dial: There are 2 frequency indicators; one for FM and another for AM. The frequency dial is automatically switched to the selected wave band.
  • Page 16 The pre-amp has a selector with correction curves for magnetic- ceramic and crystal pick-ups. Connections: Huldra 8 has 5-pin DIN connectors for connection of tape deck and turntable. Some units have RCA Phono connectors in addition. There is a diode output for recording radio. Each amplifier has 2 sets of 2-pin DIN speaker connections for APP (main) and SEP (separate) speakers.
  • Page 17 The speaker selector has three functions with a total of 7 positions. A. Choice of speaker pairs; main speakers, separate speakers or both. B. Choice of source for the main speakers and another source for the separate speakers C. “Talk and Listen” for intercom functionality Double Programs: One amplifier is connected to the tuner and the other i connected to tape deck or turntable.
  • Page 18 Block diagram. Phrase translations: Strekk-antenne Wire antenna Kanal Channel MF-Forsterkere MF-Amplifiers Tangent velger Push buttons Grammofon Turntable Høyre Right Dynamisk Dynamic (here: Venstre Left magnetic) Keramisk Ceramic Sep. Separate Krystall Crystal App. Apparat (Main) Båndopptaker Tape desk input Høytt. Speaker inngang Båndopptaker utgang Tape desk output Kraftforsyning...
  • Page 19 This page is not in the original manual. It has been added in order to translate the illustrations in the original manual: Normal living room level Powerful living room level LEFT CHANNEL RIGHT CHANNEL SEP. SPKR SEP. SPKR. Medium Deep Medium Deep APP.