PMT Audio
RTM LPR 35

RTM

LPR 35

Analog Tape

Specs

Type
Long play standard bias studio tape, same formulation as SM 911, backcoated
Operating level
up to +3dB
Formats
¼” on 5” plastic Trident reel (270m), ¼” on 7” plastic Trident reel (549m), ¼” pancake 1100m (10"), ¼” on 10.5” plastic Trident reel (1100m), ¼” on 10.5” metal NAB reel (1100m)
Tape widths
6.3 mm (¼ inch)
Tolerances of tape width
+0.0 /-0.06 mm (+0.0 /-2.4 mil)
Base material
Polyester
Base thickness
20.0 μm (0.78 mil)
Coating thickness
11.0 μm (0.43 mil)
Total thickness
35.5 μm (1.40 mil)
Matt back
colour black
Coercivity
25.5 kA/m (320 Oe)
Retentivity
127 mT (1270 G)
Saturation flux
1800 nWb/m
Recommended bias setting
0.0 dB (7.5 ips, 70 µs), 0.0 dB (7.5 ips, 50+3180 µs), 0.0 dB (3.75 ips)
Sensitivity drop for recommended bias setting
ΔS10 4.0 dB (7.5 ips, 70 µs), ΔS10 4.0 dB (7.5 ips, 50+3180 µs), ΔS6.3 4.5 dB (3.75 ips)
Maximum output level
+7.5 dB at 1 kHz (7.5 ips, 70 µs), +7.5 dB at 1 kHz (7.5 ips, 50+3180 µs), +10.0 dB at 315 Hz (3.75 ips)
Signal to bias noise at 1 kHz (MOL/BNIEC)
68.0 dB (7.5 ips, 70 µs), 71.0 dB (7.5 ips, 50+3180 µs), 67.5 dB (3.75 ips)
Print-through
56.0 dB (all three)
Leader tape
No leader tape included
Made in
France

Source: RTM LPR35 technical data sheet (PDF)