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Blank Cassettes: Audio



Blank Cassettes: Audio

Brand: M&R
Model:Chrom I
Tape Length: C - 60
Country:  Germany
Magnetic Layer: Chromdioxid CrO2
Release Year: 1980
Timeline: 1980
Sort: Chrom I
Series: Complete series in catalog
Position:Chrom
Tape Type:Type II
Rating:Rate
Collections:  Collection     Wishlist 
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Price Guide:Valuation Page
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Comments and Reviews
 
HOOK45 SUBS ●
5th Nov 2024
 Review
░▒▓█ V̺͆E̺͆R̺͆D̺͆I̺͆C̺͆T̺͆ █▓▒░ ✴️✴️⬜⬜⬜

Sound quality
❇️❇️⬜⬜⬜
Value for money
*️⃣*️⃣⬜⬜⬜

✔︎ Helpful Review?
 
 
HOOK45 SUBS ●
5th Nov 2024
 Review
⚜️⚜️⚜️
⚜️⚜️
⚜️

Promotional Cassettes

Promotional audio cassettes are neither Brand cassettes
nor No name cassettes. They are advertising
audio cassettes, ordered to companies known in the field,
eg. BASF. The tapes used are of good quality, the casings
carefully finished, the cassettes having a professional look.
The tapes used in the promotional audio cassettes are generally
Ferro, less Chromdioxid, allowing good quality recordings.
The name of these types of audio cassettes is that of the
company that ordered them, sometimes appearing on the
cover the Brand name who produced them.
If the budget allocated to these promotional cassettes is reduced,
anonymous workshops will be used, and the manufactured
cassettes are qualitatively identical with the No name ones.
⚜️⚜️⚜️⚜️⚜️

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HOOK45 SUBS ●
5th Nov 2024
 Review
✴️Chrome✴️Chrome Type✴️Chrome Position✴️High Position✴️
　Both refer to Type II, where Chromium uses chromium dioxide (CrO2) as the magnetic material (real chrome tape), and “chromium type” uses materials other than chromium, such as cobalt-added iron oxide, as the magnetic material, which are used in the same way as chrome tape, such as equalizer and bias settings. “Chrome position” and “high position” refer to tapes that are used with the same bias and equalizer settings as chrome tape.
The meaning of “high position”: Chrome tape requires a higher (deeper, stronger) bias value setting than the normal type, so decks compatible with chrome tape are equipped with a special switch that allows setting the bias value higher (high level). It seems that tapes with such settings came to be called “high position tapes” because of the meaning of the position of the switch to be set.

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HOOK45 SUBS ●
5th Nov 2024
 Review
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Chromdioxid
CrO2 was first prepared by Friedrich Wöhler by decomposition
of chromyl chloride. Acicular chromium dioxide was first
synthesized in 1956 by Norman L. Cox, a chemist at E.I. DuPont.
The magnetic crystal that forms is a long, slender glass-like
rod-perfect as a magnetic pigment for recording tape. When
commercialized in the late 1960s as recording medium, DuPont
assigned it the tradename of Magtrieve.
Unlike the spongy looking ferric oxides used in common tape,
the chromium dioxide crystals were perfectly formed and could
be evenly and densely dispersed in a magnetic coating; and that
led to unparalleled low noise in audio tapes. Chrome tapes did,
however, require a new generation of audiocassette recorders
equipped with a higher bias current capability (roughly 50% greater)
than that used by iron oxide to properly magnetize the tape particles.
Also introduced was a new equalization (70 µs) that traded some
of the extended high-frequency response for lower noise resulting
in a 5–6 dB improvement in signal-to-noise ratio over ferric-oxide
audio tapes.
DuPont licensed the product to Sony in Japan and BASF in Germany
in the early 1970s for regional production and distribution.
Chromdioxid cassettes have the following advantages compared
with low noise ferric oxide cassettes:
- A substantially improved high frequency response. The response is
6 to 10 dB higher at 10 KHz and 8 to 12 dB higher at 15 KHz.
- The undistorted output at low frequencies is 1 to 3 dB better.
- Print-through is 4 to 8 dB less and the stability of high frequency
signals is insured.
- The particles of chromium dioxide are as small as the smallest
low-noise ferric oxide particles, but considerably more needle
shaped.
- The particles are single crystals rather than being made of
many crystals as is the case in ferric oxide. Also they are free
from defects common to all ferric oxides. such as porosity and
the formation of branches.⚜️

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See Also

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Blank Cassettes: Audio - M&R - Chrom I - C - 90 - Germany (1980)
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Blank Cassettes: Audio - M&R - No Sort - C - 60 - Germany (1978)
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Blank Cassettes: Audio - Audio Sound - Superchrom - C - 60 - Germany (1980)
Next by Tape Length
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Blank Cassettes: Audio - OTC - Professional Quality - C - 60 - Germany (1980)
Previous by Tape Length
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