The Aphex Model 124B Audio Level Interface is designed to allow use of -10dBV consumer hi-fi equipment with +4 or +8dBm professional/industrial/broadcast audio systems. It provides an extremely clean, reliable two-way buffer so both systems can operate at maximum performance levels, matching impedances and operating levels.
Servo-balancing means that high common mode voltages, such as induced hum from a nearby AC line, are compensated for to preserve headroom. The input impedance of 100K Ohms allows bridging over a 600 Ohm balanced or unbalanced line with negligible loading effects. Front panel switchable 600 Ohm load allows for input line termination when required.
Servo-balancing allows the outputs to be used balanced or unbalanced (single-ended) at any time by simply grounding either unused pin. The servo compensates for the voltage loss on one side so there is no 6dB loss of level. The outputs are also protected against short-circuits, so nothing is damaged if the wrong pins are grounded. A front panel indicator will flash red when the balanced output level is 5dB below clipping.
Rackmount Kit for 120B, 124B and 141B
Allows for the rack mounting of one or two "B" series products in one rack space. The new front panel design of the "B" series products and the new rack mount kit design makes installation 100% faster!
Part # 45-008B
NOTE: This kit is ONLY for "B" series units. Contact Aphex for info about rack mounting kits for legacy products.
|Bandwidth||5Hz - 100 kHz (+0, -0.5dB)|
|Dynamic Range||99 dB|
|Channel Isolation||> 70dB|
|CMRR (typical)||> 45 dB|
|IHF Input Connectors||RCA Jacks|
|IHF Input Impedance||18 k Ohms|
|IHF Input Level||-10 dBV; peak +15dBV (ref. 1V)|
|Balanced Input Connectors||XLR 3-pin Female|
|Balanced Input Impedance||100k Ohms with front panel 600 ohm termination switch|
|Balanced Input Level||+4 dBm (+8dBm via internal jumpers); peak +30 dBm|
|IHF Output Connectors||RCA Jacks|
|IHF Output Impedance||150 Ohms|
|IHF Output Level||-10 dBV, peak +18dBV (ref. 1V)|
|Balanced Output Connectors||XLR 3-pin Male|
|Balanced Output Impedance||65 ohms|
|Balanced Output Level||+4dBm Front panel adjustable ± 6dB, peak +25dBm|
|Power Requirements||100, 120, 220, OR 240 VAC, 50-60Hz|
|Dimensions||1.75"H x 8.25"W x 7.25" D (44.5mm x 209.5mm x 184.2mm)|
|Net Weight||3.5 lbs (1.6 kg)|
All specifications are subject to change without notice.