Revox B791

1 9 8 1 1981
1 9 8 5 1985

The B791 is a B795 with ± 9% pitch control added - the rest is entirely the same, Linatrack tonearm, platter, motor and looks included.

The motor is based on a 200-pole tacho wheel allowing precise comparison between a quartz reference frequency.
The result was better S/N ratio (2dB) compared to the original B790 but a bit weaker a drive...

Despite being the small one, the B791 is remebered as the big one when it only was a revamped B795 : the 1979 small one :)

Updated in 1986 as B291 and B291S with another 2dB push in S/N ratio, IR remote control operation and pretentious black & gold looks for the 291S.
Nevertheless the same tonearm and chassis as the B791 and therefore as the B795.


Where to properly restore your Revox B79x here, the latter link also offering the refinishing of Nextel to its tip-top shape.

Revox B791, image 1 Revox B791, image 2 Revox B791, image 3
Revox B791 specifications
Title Value
DRIVE DRIVE
Type : Quartz-regulated direct-drive
Speeds : 33 1/3 & 45rpm
Rotating accuracy : ± 0,01%
Pitch control : ± 9%
Platter : 31,3cm / 2,1kg diecast aluminium
Startup time : < 2s (45rpm)
Stop time : < 2s (45rpm & 33 1/3rpm)
Wow & flutter : < 0,05% (DIN 45500, weighted)
< 0,1% (DIN 45500, linear)
S/N ratio : > 48dB (DIN 45539A, unweighted)
> 70dB (DIN 45539A, weighted)
TONEARM TONEARM
Type : tangential with electronic locking
Tangential error : < 0,5°
Antiskating compensation : none
Tracking force : 0,5...2g, counterweight adjusted
Cueing : electronic, pneumatically damped
Muting : electronic, until cartridge is on disc
End stop : automatic, controlled by tonearm's locking
Movement locking : electronic, with DC servo motor and LED optoelectronic detection
GENERAL GENERAL
Semiconductors : 29x ICs
30x transistors
24x diodes
1x LED
3x bridge rectifiers
PC : 30W max.
Dimensions : 44,9 x 14,2 x 39,5cm
Weight : 9,1kg.
Revox B791 : 0 topic
(last updated topic shows up first)
page online since : may 2005
page updated : january 2011
page type : LGT / KNB
page weight : 199.3 Kb / 0 b

You must login to access your account.


I forgot my password

Log me automatically on each visit
Hide my online status for this session
> Create an account

Close
  • TVK Talk Forum
  • TVK Museum
  • Specials
  • Timelines
  • Utilities
  • Games