VU meter A700
for all Revox A700
-40 dB to 6 dB with 40 LEDs, pluggable
After the original VU meter with pointer instrument for the Revox A700 did not exist anymore, we immediately thought about how to replace the VU meter and what. A replica with pointer instruments too expensive. Alone the tool, priceless!
Existing LED VU meter not suitable or with 6 to 10 LEDs way too inaccurate.
We developed a VU meter with 20 LEDs per channel and a range of -40 dB to 6 dB.
The purpose of the ad is:
Replacement of analog instruments if one or both VU meters are defective.
As a result, you receive:
A Revox A700 with working VU meters in LED technology.
Description VU meter A700
20 LEDs
per channel provide a high resolution.
The display starts at -40 dB. The resolution is 20 dB better than the analog instrument.
From -4 dB to 4 dB resolved with 1 dB steps.
6 dB and -6 dB lie on one line.
Appearance
the new level indicator was adapted to the original analogue VU meters as far as possible in terms of font size and response!
Overload indicator, Overload indication starts at 6 dB (514 nWb / m) and stays for 0.5 sec. on. Thus you will not miss even the slightest overdriving of the recording.
6 dB and -6 dB of the LED display are on one level.
The overload displays are located on the right and left center of the display, as well as the original!
pluggable
the VU meter amplifier PCB 1.067.425 is no longer required. Instead, the adapter board is equipped with the connections to the LED VU meter. The rectification, amplification and adjustment of the channels is done on the new LED VU meter board. The replacement of the LED version is no more expensive than replacing it with an original pointer instrument!
There is no soldering or other required and thus feasible for everyone!
Extension VU meter A700
front panel
To remove the VU meter, the lower front panel must be removed. For this purpose, all buttons of the controls are removed, two black and 2 aluminum screws solve the control bar.
rear panels
The back wall must be removed. For this purpose, 8 Phillips screws are loosened then tilt the rear wall slightly forward and remove it carefully (do not damage the power cord and socket area).
Set the back panels aside. The plastic tray dissolves very quickly from the aluminum rear panels. Here special care is required.
WATCH OUT! Disconnect the mains plug before opening!
VU meter amplifier
The PCB of the VU meter amplifier (1067.425) is connected to the Revox A700 input amplifier board with just a single screw. After removing the screw, the board can be removed from the connector J7. Now release the plug connection of the VU meter (J8).
VU meter
The VU-Meter of the Revox A700 is mounted on the rear shield plate with spring-mounted two screws.
After loosening the two red marked screws, the VU-Meter can be pulled forward.
shield plate
The shield plate is attached to the chassis with three screws. The screws are replaced by the supplied spacers. The shield plate must be mounted from the rear of the chassis.
Single LED VU meter
Connectors
Insert the plug connector, the adapter plate of the LED VU meter of the Revox A700, past the shielding plate and back into the device
Connect VU meters
Plug the connector of the LED-VU meter into the socket J7 of the Revox A700. The plug is coded. Thus an accidental wrong plugging is not possible!
Mount PCB
Place the PCB of the VU meter on the three standoffs and fix it with the 3 screws M3 x 6. The upper screw (marked red) receives a fan disc to ensure good contact with the mass. The two lower screws (blue) each receive a washer.
acrylic
Glue the new acrylic glass into the front panel of the Revox A700. The overlay is about 2 mm wide, which is enough to stick the glass in place.
Now the Revox A700 can be reassembled in reverse order.
Digital VU-Meter on our shop
Thomas Schröder
Schottjer Straße 30a
26529 Upgant-Schott
Germany
Schottjer Straße 30a
26529 Upgant-Schott
Germany
+49 4934 - 80 44 39
info@revox-online.de