8

223/223XL -234/234XL

2-Way, 3-Way

4-Way Crossovers

 

 

 

 

 

 

 

 

 

 

 

 

crossover, as this may cause severe damage not covered under the dbx warranty. Connect the power cord to the crossover first, then to a power source that is properly grounded. Never lift the ground as a shock hazard may result.

After you have safely plugged in the crossover, turn on the source device(s). Turn the amplifiers’ outputs all the way down (-∞) and turn on the amplifiers. All of the elements of your sound system should now be on, and the amplifiers should be turned all the way down. Turn the source device to its nominal operating level, sending a nominal (average) level to the 234/234XL-223/223XL. Slowly turn up the amplifiers’ outputs until you can hear signal at a comfortable volume. Make adjustments as you desire.

If you are using your system in stereo 2-way or 3-way mode, the needed crossover frequency may be higher than 960 Hz, making it necessary to set the x10 switch to the active position. This changes the range of oper- ation of the frequency selector from 45-960 Hz to 450 Hz to 9.6 kHz. All other frequency selectors remain the same. When using the X10 switch, ALWAYS ensure that the amplifiers feeding all speaker systems are turned off or that the input gain controls on the power amplifiers are turned down before changing the setting of the X10 switch. Not doing so may send a spurious signal to the outputs of the crossover when the X10 switch is engaged, and may damage speaker systems which are pow- ered at the time of the spurious signal.

Every output is equipped with a polarity (Ø) reverse switch on the front panel. When speakers are not “in phase”, the frequency response of the system is compromised, particularly in the low frequencies. Out of phase signals can also cause “comb-filtering” in the high frequencies. The polar- ity switch is extremely useful for fine tuning your sound system for peak performance. An LED is activated when the output polarity is reversed.

The other feature accessed on the back panel is “low frequency sum- ming”. This is useful with systems that utilize mono subwoofers. Activating the LF sum switch “sums” the low frequencies of both the left and right inputs. The sum is sent to channel one’s low output marked “LF SUM”, while channel two’s low output is not used, and channel two’s phase invert led is disabled, indicating it is not operational in “LF Sum” mode. The summed low frequencies represent all the low frequencies of both the left and right inputs, and since lows are generally non-directional

FEATURES

X10 OPERATION

POLARITY SWITCH

LOW FREQUENCY SUMMING

®

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Harman-Kardon 234/234XL, 223/223XL operation manual Features
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223/223XL, 234/234XL specifications

The Harman-Kardon 234, 234XL, 223, and 223XL are classic receivers that have made their mark in the audio equipment landscape, offering a blend of functionality, performance, and aesthetic appeal. These models are notable for their ability to deliver rich, high-fidelity sound, making them a sought-after choice for audiophiles and casual listeners alike.

One of the main features of the Harman-Kardon 234 and 234XL is their superior power output. These receivers boast a robust power rating, allowing them to drive a wide range of speakers effectively while maintaining sound clarity and depth. The 223 series shares this powerful performance, making it suitable for smaller rooms or setups where space is a constraint without sacrificing audio quality.

Both models are equipped with multiple input options, enabling users to connect a variety of audio sources such as turntables, CD players, and even modern streaming devices. This versatility is complemented by their user-friendly interface, which includes clearly labeled controls and an intuitive layout, simplifying the user's experience.

The Harman-Kardon 234 and 234XL utilize advanced audio technologies, including the proprietary Harman-Kardon circuitry, designed to minimize distortion and enhance sound fidelity. These receivers also incorporate features such as tone controls for treble and bass adjustment, allowing listeners to customize their audio experience according to personal preferences and room acoustics.

In terms of build quality, both the 234 and 223 receivers exhibit a premium construction with a sleek, classic design that resonates with enthusiasts of vintage audio equipment. Their durable enclosures not only protect internal components but also enhance the aesthetic appeal in any home or studio environment.

Additionally, the Harman-Kardon 234XL features an enhanced heat dissipation system, ensuring optimal performance even during extended listening sessions. This is an important consideration for audiophiles who often engage in long listening periods without compromising on quality.

With a reputation for reliability and performance, the Harman-Kardon 234, 234XL, 223, and 223XL receivers stand out in the landscape of audio equipment. Their combination of powerful amplification, versatile connectivity, and rich sound quality continues to make them relevant for those seeking an exceptional audio experience. Whether used for music playback, home theater systems, or simply enjoying the nuances of sound, these receivers deliver a satisfying performance that resonates with audio lovers around the globe.
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