background image

negative connections on 

either

 your cartridge or your speakers (be sure to reverse

both

 channels).

If you are not sure about the phase of every piece in your system, you can establish

correct absolute phase by careful listening. When the system is in correct phase,

transients will be noticably cleaner and more sharply defined. The effect is especially

apparent on plucked string sounds. A final warning - not all records are phase correct

(including some "audiophile" recordings), so listen to several before concluding your

investigation of absolute phase.

AC LINE POLARITY

Each piece of electronic equipment in your system is subject to minute ac leakage

currents to the chassis. Since the chassis of components in a system are usually

connected via the ground side of the interconnect wires, these leakage currents are

superimposed on the musical signals. It is possible to minimize these current flows

by carefully selecting the way in which each component is plugged into the wall

outlet. Because the power cord on the MC8 is not polarized, it can be plugged in two

ways. It will normally sound better in one orientation than in the other. The same will

be true of each electronic device in your system.

THE IMPORTANCE OF WIRES

Interconnect and speaker wires are an important element in your stereo system.

Interconnects are available which will permit a reference quality system to blossom

and fulfill its promise of musical reality. Others will strangle the system to the point

that it becomes no better than average. To complicate matters, our experience

suggests that the choice of interconnects will be system dependent - those that are

ranked first on a given system may be a poor choice for a different system. Consult

your Motif dealer for recommendations for your specific system.

Summary of Contents for MOTIF MC8

Page 1: ...OWNER S MANUAL MOTIF MC8 STEREO F E T PREAMPLIFIER conrad johnson design inc 703 698 8581...

Page 2: ...en painstakingly hand assembled by skilled assembly technicians The completed instrument has been subjected to a rigorous quality inspection program entailing more than sixty performance measurements...

Page 3: ...not covered by this warranty 3 The above warranty may be transferred to subsequent owners provided that the warranty registration card has been returned to conrad johnson design inc within 30 days of...

Page 4: ...d to support the weight of the unit allowing installation in standard 19 equipment racks In custom installations the unit may be mounted either horizontally or vertically To minimize hum pickup the MC...

Page 5: ...oise 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 achiev...

Page 6: ...transients are exclusively positive that is the initial effect is a rise in pressure The ear is capable of distinguishing these positive transients from the musically unnatural alternative of a negati...

Page 7: ...se leakage currents are superimposed on the musical signals It is possible to minimize these current flows by carefully selecting the way in which each component is plugged into the wall outlet Becaus...

Page 8: ...should be controlled We recommend the use of one VPI brick placed on the top of the MC8 in the right rear corner Clean records sound better The sonic differences achieved by merely cleaning a record...

Page 9: ...rting low gain phono is phase correct high level stage is phase correct Phono overload in excess of 150mv at 1kHz Response bandpass 5Hz to more than 100kHz RIAA equalization to 25 dB 20 20kHz Total hu...

Page 10: ...UPS to Service Department conrad johnson design inc 2733 Merrilee Drive Fairfax VA 22031 Be sure to enclose a note explaining the problem you are having in as much detail as possible If the problem is...

Reviews: