CONNECTION
Low-gain phono input:
This input provides the amplification and equalization
required by moving-magnet and high-output moving-coil cartridges. The input
impedance is the industry standard 47,000 ohms shunted by approximately 100
picofarads capacitance. This is well suited to nearly all moving-magnet and many
high output moving-coil cartridges. If necessary, the input impedance can be lowered
by soldering a resistor across (from center pin to ground) the input jack. To achieve a
desired input resistance of RD, use the following formula to compute the required
additional resistance RA: RA = 47000*RD/(47000-RD)
Some moving magnet cartridges require higher capacitance for optimum
performance. Decreasing the input capacitance may be achieved by soldering a
suitable value capacitor across the phono input jack. Use polystyrene capacitors for
this purpose.
High-gain phono input:
This input provides the additional gain and improved signal
to noise ratio required by most moving-coil cartridges. The input impedance is 2000
ohms. Our experience suggests that this value is well suited to many moving-coil
cartridges. Lower resistance can be achieved as suggested above. If a higher value is
required (some people recommend 47000 ohms for example) the MC8 may be fitted
to your specification at the factory. There is no charge for this service.
Please take
note that the high gain phono section is phase inverting and read the section that
follows on absolute phase.
Tuner, cd, tape 1, tape 2:
These are high level inputs and are electrically equivalent.
They presents a 50k ohm load to the source. The
outputs
of your tape recorders
should be connected to tape 1 and tape 2.
Record output:
The two pairs of record outputs connect the selected signal to your
recorders or external processing loop (eg. equalizer). The output signal is not affected
by the level control. Connect "record out" to the input of your tape recorders.
Main output:
Connect this output to the input of your amplifier (or crossover in a bi-
amplified system). We recommend the use of an amplifier with an input impedance
of 20k ohms or higher.
