Speed Question

[jcmusic]

What speed would a r2r be using to equal 33.3 of a tt?

Jay

[steveidosound]

What speed would a r2r be using to equal 33.3 of a tt?

Jay

Not sure I understand the question. What speed is equivalent in quality? Depends on a lot of things but for copying a record probably 7 1/2 is good enough.
What is the same media linear velocity? That changes with where you are on the record.
When does the reel speed equal 33 1/3 RPM?

[Ben]

Looking at the R2R playing, about 1/2 way through on a 7' reel
7.5 IPS it looks like the reel speed is 30 RPM. :)
Off hand I think the -3DB is 18 Khz for 7 1/2' and 20 Khz for 15 ips,
but your R2R manual should give the details.
Listening to a Decca tape - enhanced for stereotape ( no year )
Golden Favorites - The Orginal Ink Spots, with a New Amp/Pre-amp
and they sound really good. I think I would have a less fidelity, or mono recording with good sound, that poor CD copy of a better known pressing.
I am finding about 3%  of CD's just don't make the grade for quality they could have.
Ben.

 

[PJ]

...Off hand I think the -3DB is 18 Khz for 7 1/2' and 20 Khz for 15 ips, ...

I'm sure you're right in many realistic cases, but theoretically (i.e. with the same head gap and a low enough head capacitance) you should be able to get another octave at twice the tape speed.

[Ben]

I suspect it is the Recording Head rather than the playback head that
would give the absolute limit of freq response and linear response.