I made & listened to many VHS HiFi tapes back in the late 80s to early 90s.
The problem with this format is the damn hardware! Those VHS recorders frequently self destruct within 1 to 3 years of normal use. So the tapes now gather dust.
Actually the exact opposite happens. You get faster head velocity at the slower (LP, SLP-EP) speeds. The heads on the cylinder are rotating in the same direction as tape movement. If the tape moves faster in the same direction as the rotating heads, the faster the tape movement the slower the effective write-read speed of the heads. If you moved the tape fast enough you would be at the same speed as the spinning heads! The sound quality is determined by the FM record-playback process and electronics. VHS HiFi records two FM carriers, one at 1.3 mHz and the other at 1.7 mHz for the L and R audio channels. Also uses a compression-expansion noise reduction similar to DBX to get a decent signal to noise ratio. Sometimes you can hear the noise reduction working on certain types of music with pure tones like flutes, piano etc.If you run the tape speed at standard speed you will get better sound quality then
the long play setting, this is because of what they call tape to head ratio and on
standard play setting you get the fastest tape to head ratio...
Actually the exact opposite happens. You get faster head velocity at the slower (LP, SLP-EP) speeds. The heads on the cylinder are rotating in the same direction as tape movement. If the tape moves faster in the same direction as the rotating heads, the faster the tape movement the slower the effective write-read speed of the heads. If you moved the tape fast enough you would be at the same speed as the spinning heads! The sound quality is determined by the FM record-playback process and electronics. VHS HiFi records two FM carriers, one at 1.3 mHz and the other at 1.7 mHz for the L and R audio channels. Also uses a compression-expansion noise reduction similar to DBX to get a decent signal to noise ratio. Sometimes you can hear the noise reduction working on certain types of music with pure tones like flutes, piano etc.
Would be valid if you had different width hifi heads to write wider tracks onto the tape at the higher speeds. In a multihead machine at SP speed, 58 micron video heads utilize all the tape oxide coating, but the single pair of hifi heads still write the same track width as at a slower speed.Ed, this is correct, but at the SP speed, the signal is spread out over more area of the tape than at the slower speeds, and you get fewer dropouts.Some decks muted the audio when there was a dropout, others gave you popping or static.
Would be valid if you had different width hifi heads to write wider tracks onto the tape at the higher speeds. In a multihead machine at SP speed, 58 micron video heads utilize all the tape oxide coating, but the single pair of hifi heads still write the same track width as at a slower speed.