| 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
1981
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.
page online since : may 2005
page updated : january 2011
page type : LGT / KNB
page weight : 199.3 Kb / 0 b
page updated : january 2011
page type : LGT / KNB
page weight : 199.3 Kb / 0 b
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