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This content has been automatically translated from Ukrainian.
Cassette players are back in fashion: they are listened to through warm analog sound, atmosphere and simple physical interaction with music. But one of the most frequent questions is what is the maximum film length that can be safely used and how do they differ from each other.
What is the maximum length of cassettes?
Standard audio cassettes have the following typical denominations:
- C60 - 60 minutes (30 min to the side)
- C90 - 90 minutes (45 min to the side)
- C120 - 120 minutes (60 min to the side)
Sometimes there are longer ones, for example C150 or C180, but it's more exotic.
Why are long cassettes not recommended?
To accommodate more music, manufacturers make film thinner. This is where the nuances begin:
- C60 - optimal thickness, tears the least, keeps tension stable.
- C90 - compromise, are used most often, but can "go" in cheap or worn players when aging.
- C120 and more are risky: very thin film, easy to pull and tear, the player mechanism should be in perfect condition.
If you plan to record important material or use a vintage player, longer than C90 is best avoided.
So what is the maximum length considered safe?
- For most portable players: C60 or C90 - best option.
- For studio decks or collector's use: The C120 can be used, but only with technically sound equipment.
- Anything longer than the C120 is more theoretically possible than practical.
Does film length affect sound quality?
Yes. Thinner film has less magnetic stability, so long cassettes more often give:
- higher noise level
- speed instability during listening
- faster wear
Shorter cassettes usually sound cleaner and more confident.
The maximum available length of cassette film can reach even 150–180 minutes, but a realistic and reliable maximum is the C90. This is the optimal balance between duration, safety for the mechanism and sound quality. If stability and durability are important to you, it is better to choose C60 or C90 - these formats can withstand time and load.
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