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CONNECTING THE SPEAKERS

The PCS’s input terminals are located on the back of the speaker. The PCS uses a 5-way binding post which accepts several

types of speaker cable termination.  Make sure that all connections are tight.

It is essential for proper performance that both speakers in a stereo system be wired in the same polarity. The speaker’s input

terminals are color coded to facilitate this. The wire connected to the red ringed input terminal of each speaker should connect

to the respective positive (+) output terminals of the amplifier; the wire connected to the black ringed input terminals should be

connected to the respective negative (–) output terminals of the amplifier.

The speakers should be connected to the amplifier with high quality cable to ensure minimal loss of power and proper control

by the amplifier. If the speakers are being connected to a vacuum tube amplifier with various impedance taps, the 4 ohm tap will

usually give the best results.

Due to European CE regulations that do not permit banana plug type loudspeaker connections, we ship THIEL speakers with

removable plugs installed in the ends of the binding posts. If you wish to use banana plug type connections, you may remove the

black plastic plug inserted into the end of each metal binding post cap. To remove the plug, use your fingernail to pry along the

bottom edge of the plastic insert and lift out.

BREAK-IN

The PCSs, like most speakers, require a period of playing before they perform optimally. The time depends on how loudly

the speakers are played; more time is required if played softly, less if played loudly. At least 50 hours at moderately loud

levels are required before the speaker is performing near optimum. You should notice even more improvement after 100

hours of playing.

ASSOCIATED EQUIPMENT

The PCS is a very high quality sound reproducer and will benefit from use with the best associated equipment. Since it is

extremely accurate, it will reveal sources of distortion generated elsewhere in the system. For example, distortion resulting

from poor recordings or inferior electronics will be reproduced accurately. Also, the quality of the interconnect cables and

speaker cables will significantly effect the performance of the system.

POWER REQUIREMENTS

It is important to have enough power to play at the level you desire without distortion. If high sound levels are desired, the

PCS’s are designed to be used with amplifiers rated up to 300 watts per channel (into 4 ohms). If you play the speakers more

loudly than the volume the amplifier can cleanly produce, the amplifier will produce overload (clipping) distortion. The

sound will become compressed, strained, and in extreme cases, obviously distorted. This distortion is actually non-musical

additional energy and since it is concentrated in the high frequency region where the speaker is least able to handle it,

tweeters can be damaged in extreme cases.

   Keep in mind that sound quality is usually much more important than sound quantity. There can be large differences in the

sonic performance of two amplifiers of equal power, and this is more important than large differences in power. Most

everyone will be happier with a 100 watt amplifier of high sonic quality than a 200 watt amplifier of mediocre sonic quality.

For this reason, we feel there is no substitute for listening in making your amplifier decision.

   The question “how much power do I need?” does not have the simple answer most people expect because it is not

determined only by the loudspeaker’s efficiency, but also by the volume desired and the size of the room. If all three factors

are average, about 100 watts per channel is required. Each factor can raise or lower this amount by about three times.

  1) Usually, people who “don’t like music loud” can decrease their power to about one-half. Also, people who like music

loud should increase their power by 2 times or more. Most people fall within a normal range.

   2) A speaker with a low efficiency of 84dB/W-m will require twice the power of an average 87dB/W-m speaker and one

with a high rating of 90dB/W-m will require only half the power of an average speaker. Usually, high efficiency can be

obtained only by trading off sonic quality—there are very few speakers that provide a very high level of both. The PCS is of

Summary of Contents for PCS

Page 1: ...OWNER INFORMATION THIEL Model PCS Coherent Source loudspeaker system ...

Page 2: ...be compressed and will not achieve optimum width Aiming We usually prefer the imaging obtained when the speakers are pointed straight ahead rather than pointing toward the listener This placement produces the largest most natural soundstage However toeing the speakers in somewhat may produce more specific placements of instruments Also if it is not possible to get the speakers far enough away from...

Page 3: ... from poor recordings or inferior electronics will be reproduced accurately Also the quality of the interconnect cables and speaker cables will significantly effect the performance of the system POWER REQUIREMENTS It is important to have enough power to play at the level you desire without distortion If high sound levels are desired the PCS s are designed to be used with amplifiers rated up to 300...

Page 4: ...leaning your speakers avoid using oils waxes or polishes that contain silicone such as Pledge or Johnson s We recommend using Endust Non wood laminate cabinets may be cleaned with a glass type cleaner and a soft cloth GRILLE The PCS grille is is attached magnetically to the front of the speaker The grille is designed to not produce diffraction so there is no sonic reason to remove it If you do nee...

Page 5: ...e hearing damage from loud noise is often undetectable until it is too late THIEL and the Electronics Industries Association s Consumer Electronics Group recommend you avoid prolonged exposure to excessive noise Depending on room size and amplifier power some home audio systems can reach sound pressure levels in excess of 95 decibels with peaks of over a 105 decibels For your protection the list b...

Page 6: ...7 00 THIEL 1026 Nandino Boulevard Lexington Kentucky 40511 1207 Telephone 859 254 9427 E mail mail thielaudio com Web www thielaudio com CONTRIBUTOR HARDWOOD FORESTRY FUND ...

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