In a nutshell

Nagra IV-S TC is a Timecoded evolution of Nagra IV-S, first designed for stereo music recording, which quickly taken up on movie production: two-track recording allows to separate the boom track from the radio mike track, "in" from "off", playback from sync sound, etc. It is then possible to make up for mishaps that may have occurred during recording. Excellent mike preamps, large dynamic range, high quality filters and limiters, two-needle level display, sturdiness and reliability, great autonomy, have made Nagra IV-S number one on production sets, radio studios and concert halls, long after the release of field digital recorders.
The replacement of the standard FM pilot system by the SMPTE TC system is a result of the growing use of video techniques in post production. The TC signal is laid between the two audio tracks and, on playback, delayed to compensate for the gap between TC head and playback head.
The Nagra IV-S TC has been replaced by DAT for economic reasons: sound dailies must be transferred to DAT, in order to maintain TC continuity (mirror DAT); ¼" sound tape cost is three or four times DAT cost. Nevertheless, many American and European sound mixers manage to impose Nagra IV-S TC on productions in spite of an entirely digital post production chain.

This product is commonly named:

Nagra IV-S TC, Nagra IVS TC, Nagra IV.S TC, Nagra 4-S TC, Nagra 4S TC, Nagra 4.S TC, Nagra IV-S-TC, Nagra IVS-TC, Nagra IV.S-TC, Nagra 4-S-TC, Nagra 4S-TC, Nagra 4.S-TC, Nagra IV-STC, Nagra IVSTC, Nagra IV.STC, Nagra 4-STC, Nagra 4STC, Nagra 4.STC, IV-S TC, IVS TC, IV.S TC, 4-S TC, 4S TC, 4.S TC, IV-S-TC, IVS-TC, IV.S-TC, 4-S-TC, 4S-TC, 4.S-TC, IV-STC, IVSTC, IV.STC, 4-STC, 4STC, 4.STC

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Technical specifications

2 pistes analogiques sur bande magnétique largeur 6.35 mm, type EMTEC SM468, non réversible. Vitesses (cm/s) : 9.5, 19, 38, 38 NagraMaster. 4 têtes (contrôle après bande), limiteur intégré débrayable. 5 filtres coupe bas différents agissant sur les 2 pistes. Modulomètre (-8 dB mod. = 0 dB VU), générateur de référence 1 kHz.


2 entrées analogiques symétriques niveau micro (48 V. Ph., 12 V. Ph., -12 V. Ph., 10 V. T, Dyn 200 Ohms, Dyn 50 Ohms) XLR3F x 2.
2 entrées analogiques en courant asymétriques niveau ligne, Tuchel 7 pts.


2 sorties ligne asymétriques (Zs > 5 kOhms), bananes x 4 ;
2 sorties ligne asymétriques (Zs > 5 kOhms), Tuchel 7 pts.
1 sortie casque avec sélecteur d'écoute.

Sync & Time Code

Code temporel SMPTE/EBU, inscription entre pistes L & R. Formats (i/s) : 24, 25, 30 DF & NDF. Compensation automatique du décalage TC/audio. Appareil synchronisable en lecture sur l'horloge interne (QSLS + QSIP externes).

Power & Dimensions

Alimentation interne par accus NiCd 1.2 V./LR20 (charge par alim. secteur ATN et régulateur PAR) ou par 12 piles LR 20 1.5 V., autonomie en continu env. 7 h. ; alim. externe secteur 110/220 V.AC ATN, puissance consommée env. 5 W.
Dimensions 32 cm x 22 cm x 11 cm. Masse 6.5 kg avec piles et bande.

Manufacturer's documents