McIntosh c22 owner manual Ground Connection, Operating Instructions Balancing a Stereo System

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trols: INPUT SELECTOR positions, AUX, TAPE, TUNER 1, T U N E R 2, or MIC, the MUTING switch and T U N I N G control. When the INPUT SELECTOR is turned to TAPE HD then the COMP should be set to RIAA .

The input impedance of the tape recorder should be 50,000 ohms or greater.

A jack marked L + R OUTPUT is located next to MAIN OUTPUTS.

A monophonic signal can be distributed to other rooms by connecting another power amplifier to the jack marked L + R. The cable connecting this output to the amplifier should not have a capacity of more than 1000 mmf. The input impedance of the power amplifier connecting to this output should not be less than 150.000 ohms (150K).

LOUDSPEAKER PHASING CONNECTIONS Two pairs of screw terminals are located

on the lower left section of the C22 back panel. The speaker leads from the "left" power amplifier should be connected to the screw terminals marked FROM AMPLIFIER .

The pair of terminals marked TO SPEAKER should be connected to the "left" loud- speaker.

These connections allow the front panel PHASE switch to reverse the phase on the left loudspeaker. This arrangement is con- venient when setting up a stereo system.

GROUND CONNECTION

A single ground post is provided. The chassis ground from turntable, record chang- ers (motors used with each), tape decks, etc., should be returned to this post. Do not duplicate this ground circuit. Hum is likely to be heard in the system if duplicate ground returns are used.

The left and right program cables from each source should be twisted together and the ground wire from each source can be wound or twisted in with these cables. To avoid hum, make sure the ground wire does not make any connections to shields of the left and right channel cables except for the connection provided with the C22 ground post.

OPERATING INSTRUCTIONS

BALANCING A STEREO SYSTEM

The performance and enjoyment of a stereo system is greatly increased when the system is properly balanced. There are two factors that require balancing. One is the unequal program loudness on the left and right channels of a program source. The con- trol marked BALANCE on the C22 is used to balance unequal program loudness. Balanc- ing a program for unequal loudness is ex- plained under ADJUSTING BALANCE CON-

TROL TO CORRECT PROGRAM MATERIAL. The other factor that requires balancing is system balance. The balance of the stereo system is affected by many things including room acoustics, f u r n i t u r e placement, room shape, small differences in loudspeakers, etc. Balancing the system is done by adjust-

ing the controls on the power amplifiers.

To begin balancing the system, check to see that the controls on the amplifier are properly set. If the amplifier is a Mclntosh MC225, set the input switch to STEREO. Turn both input level controls to the black dot at the 12 o'clock position of the control.

If the amplifier is a Mclntosh MC240 or MC275 check to see that the cables from the C22 are plugged into the STEREO I N P U T jacks. Then set the lever switch to STEREO. Turn the BALANCE control to the 0 mark at the 12 o'clock position of the control. The amplifiers are now ready for the rest of the steps to balancing the system.

1.Play a familiar recording on the record player.

2.Push the two PANLOC buttons to release the C22 from the mounting shelf. Pull the C22 toward you until the latch locks en- gage approximately 3 inches from the front panel.

3.Turn the INPUT SELECTOR to the PHONO position into which the record player is connected.

4.Turn the BASS CONTROLS and TREBLE CONTROLS so that the knob indicators are centered between the panel mark- ings L and R.

5.Turn the BALANCE control to the center or 12 o'clock position.

6.Place the LOUDNESS switch in the

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Contents Stereo C22 Preamplifier Contents C22 Stereo Preamplifier Mechanical Specifications Electrical SpecificationsFront Panel Facilities Mode Selector Input SelectorBalance Control Bass ControlsComp Compensation Tape JacksPower TapeRumble HIGH-FREQUENCY FilterLoudness Pilot Lamp IntensityTape Equalization Output Level ControlsInstallation Panloc ButtonsAC Connections Input Connections AUXOutput Connections Ground Connection Operating Instructions Balancing a Stereo SystemBass Controls and Treble Controls Phase Listening to a Stereo TunerListening to a Stereo Record Listening to Monophonic RecordsUsing the C22 Front Panel Tape Input Jacks Listening to a Stereo Tape MachineUsing the C22 with Microphones for Stereo Operating CurvesGuarantee Year Factory Service ContractLaboratory INC

c22, mcintosh stereo preamplifier specifications

The McIntosh C22 stereo preamplifier is a hallmark of high-fidelity audio performance, embodying the timeless craftsmanship and advanced technology for which McIntosh is renowned. Introduced in the early 1960s and reimagined in modern versions, the C22 has remained a powerful tool for audiophiles and music enthusiasts seeking to achieve the ultimate listening experience.

One of the main features of the McIntosh C22 is its unparalleled versatility. It includes multiple inputs, making it compatible with various sources, such as turntables, CD players, and streaming devices. The preamplifier offers both phono and line-level inputs, allowing users to connect a wide range of devices while ensuring the highest quality sound.

The C22 employs a unique vacuum tube circuitry that contributes to its warm and rich tone. The use of vacuum tubes, combined with solid-state technology, provides a sonic character that is both dynamic and detailed. This hybrid design results in a smoother frequency response and adds depth and warmth to the music, making it particularly appealing for listeners who enjoy vinyl records.

Another characteristic feature of the C22 is its analog volume control, providing precise adjustments to sound levels without introducing unwanted noise that often comes with digital controls. The preamplifier’s tone controls allow users to tailor the sound profile to their personal preference, enhancing the listening experience for various musical genres.

In terms of technology, the McIntosh C22 supports high-quality audio formats, equipped with balanced and unbalanced outputs for seamless integration with power amplifiers. This ensures that the integrity of the audio signal is maintained throughout the audio chain. The C22 also incorporates the proprietary McIntosh Autoformer technology that guarantees consistent performance, regardless of the connected equipment's impedance.

The build quality of the C22 is another highlight. Enclosed in a striking chassis with a classic glass front panel, the preamplifier features an iconic blue meter display, which not only serves a functional purpose but also adds to its aesthetic appeal. The craftsmanship is complemented by high-end components that promise durability and longevity.

Overall, the McIntosh C22 stereo preamplifier stands as a testament to the blend of vintage elegance and contemporary high-fidelity technology. Its distinctive sound signature, extensive connectivity options, and robust construction make it an essential component for anyone serious about achieving an exceptional audio experience. Whether you are a dedicated audiophile or a casual listener, the C22 delivers a sonic performance that resonates with the soul of music.
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