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OK, now who ever used Dolby A ?
That's right, since there is a B is implies there was an A. There was, it was used on a porfessional level. It was also level sensitive of course.
"dave" wrote in message
news:AcednfR6gatoFbDOnZ2dnUVZ_sWdnZ2d@earthlink.com...
B has a reference level. Does C? Or is C more like dbx?
All Dolby NR systems are level-sensitive. dbx is not.
" has been fun reading this thread. My personal issue is where to get an
open reel (1/4 inch wide tape, 7-inch max reel size) setup and calibration
tape for my old Ampex AX-300 semi-pro tape deck. "
They have them all over the place on the planet Meezar 5. Twelve bucks.
T
On 03/21/2014 10:10 PM, josephkk wrote:
On Fri, 21 Mar 2014 06:08:28 -0700, "William Sommerwerck"
grizzledgeezer@comcast.net> wrote:
"dave" wrote in message
news:HN2dnT1CX-YGsrHOnZ2dnUVZ_qydnZ2d@earthlink.com...
What reference fluxivity should I use?
I believe it's 200nW/m for cassette, 250nW/m for open-reel. I once aligned a
ReVox consumer deck for Scotch ultra-high-output tape, and set it at least 6dB
higher. Otherwise, the meter would have banging at peak output.
The level for cassette is not really negotiable, because it's supposed to
represent Dolby level.
I has been fun reading this thread. My personal issue is where to get an
open reel (1/4 inch wide tape, 7-inch max reel size) setup and calibration
tape for my old Ampex AX-300 semi-pro tape deck.
?-)
MRL seems to be offered by several vendors. They can cost in the
hundreds. Do you have all the fish scales required for mechanical
alignment? We used the 10 kHz tone on the beginning of NPR tapes for
azimuth reference. Are you using stock electronics on the 300?
On Sat, 22 Mar 2014 06:04:41 -0700, dave <ricketzz@earthlink.net> wrote:
On 03/21/2014 10:10 PM, josephkk wrote:
On Fri, 21 Mar 2014 06:08:28 -0700, "William Sommerwerck"
grizzledgeezer@comcast.net> wrote:
"dave" wrote in message
news:HN2dnT1CX-YGsrHOnZ2dnUVZ_qydnZ2d@earthlink.com...
What reference fluxivity should I use?
I believe it's 200nW/m for cassette, 250nW/m for open-reel. I once aligned a
ReVox consumer deck for Scotch ultra-high-output tape, and set it at least 6dB
higher. Otherwise, the meter would have banging at peak output.
The level for cassette is not really negotiable, because it's supposed to
represent Dolby level.
I has been fun reading this thread. My personal issue is where to get an
open reel (1/4 inch wide tape, 7-inch max reel size) setup and calibration
tape for my old Ampex AX-300 semi-pro tape deck.
?-)
MRL seems to be offered by several vendors. They can cost in the
hundreds. Do you have all the fish scales required for mechanical
alignment? We used the 10 kHz tone on the beginning of NPR tapes for
azimuth reference. Are you using stock electronics on the 300?
Cool, The AX-300 headstacks are fully screw adjustable, which is an
interesting tradeoff. The electronics is still stock, so playback is NAB.
?-)
On 03/25/2014 11:08 PM, josephkk wrote:
On Sat, 22 Mar 2014 06:04:41 -0700, dave <ricketzz@earthlink.net> wrote:
On 03/21/2014 10:10 PM, josephkk wrote:
On Fri, 21 Mar 2014 06:08:28 -0700, "William Sommerwerck"
grizzledgeezer@comcast.net> wrote:
"dave" wrote in message
news:HN2dnT1CX-YGsrHOnZ2dnUVZ_qydnZ2d@earthlink.com...
What reference fluxivity should I use?
I believe it's 200nW/m for cassette, 250nW/m for open-reel. I once aligned a
ReVox consumer deck for Scotch ultra-high-output tape, and set it at least 6dB
higher. Otherwise, the meter would have banging at peak output.
The level for cassette is not really negotiable, because it's supposed to
represent Dolby level.
I has been fun reading this thread. My personal issue is where to get an
open reel (1/4 inch wide tape, 7-inch max reel size) setup and calibration
tape for my old Ampex AX-300 semi-pro tape deck.
?-)
MRL seems to be offered by several vendors. They can cost in the
hundreds. Do you have all the fish scales required for mechanical
alignment? We used the 10 kHz tone on the beginning of NPR tapes for
azimuth reference. Are you using stock electronics on the 300?
Cool, The AX-300 headstacks are fully screw adjustable, which is an
interesting tradeoff. The electronics is still stock, so playback is NAB.
?-)
If you can use a laser or something to get the gap perfectly
perpendicular to the deck you'll be surprisingly close. Are your reel
motors behaving?