PMT Audio
RTM C90 Blank Cassette

RTM

RTM C90 Blank Cassette

Analog Tape

From RTM:

Experience unparalleled analog audio quality with the RTM C90 cassette tape. Featuring 90 minutes of recording time (45 minutes per side), this blank tape is perfect for capturing music, voice, or studio projects with precision. Manufactured in France, it combines robust durability with high-fidelity sound reproduction, ensuring your recordings stay crisp and clear. Ideal for professionals and enthusiasts, the RTM C90 offers a seamless blend of modern performance and vintage analog charm. Elevate your recordings with RTM's industry-leading expertise.

RTM is proud to continue pushing the boundaries of analogue recording through audio cassettes. Our RTM C60 & C90 series is based on the legendary Studio Master tape formula (SM900). The series enables users to record and playback audio at the highest level.

Specs

Type
Type One, normal bias audio cassette, based on SM900 formula
Shell
C-0 shell, Clear, 5 screws, Tab in
Maximum recording time
90 min
Tape width
3.81 mm (+0.00/-0.05)
Tape length
130.9m
Coating thickness
5 µm ± 0.5 µm
Base film thickness
8 µm ± 0.5 µm, Polyester
Total thickness
13 ± 1 µm
Yield strength (3%)
≥ 5 N
Breaking strength
≥ 9 N
Electrical resistance of magnetic coating
≤ 4 GΩ
Coercivity
370 Oe, Ferric Oxide (Fe2O3)
Saturation retentivity
1500 G
Sensitivity at 315Hz
-0.6 dB compared to IEC I tape
Sensitivity at 10kHz
+0.5 dB compared to IEC I tape
Maximum output level at 315Hz (MOL)
+2.2 dB above reference level of 250 nWb/m
Saturated output level at 10kHz (SOL)
-6 dB relative to reference level
Bias noise
+0.6 dB compared to IEC I tape
Audio S/N ratio
More than 48 dB
Packaging
Sealed per unit with RTM stickers, carton boxes per 10pcs or 3pcs
Made in
France

Source: RTM C90 technical data sheet (PDF)