KORG ARP 3620 Owner's Manual

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Year 1976

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KORG ARP 3620 Specification

The KORG ARP 3620 is a meticulously crafted duophonic keyboard controller designed to complement the ARP 2600 synthesizer. It features a 37-note keyboard with aftertouch sensitivity, providing expressive control over pitch and modulation. The 3620 includes a sophisticated pitch-bend control with a dedicated pitch bend knob, allowing for precise tonal adjustments. This model is equipped with a single trigger output and a gate output, facilitating seamless integration with external synthesizers and modular systems. Its portamento function offers smooth glides between notes, enhancing melodic transitions. The keyboard also incorporates a duophonic aftertouch system, enabling nuanced dynamic expression. The ARP 3620's oscillator control section allows for fine-tuning of pitch and modulation depth, giving musicians detailed control over sound manipulation. The unit's robust construction is designed for durability and reliability in various performance environments. Additionally, the interface is user-friendly, with clearly labeled controls for ease of operation. This keyboard controller is a quintessential tool for musicians and sound designers seeking to harness the classic ARP sound with modern precision. Its compatibility with vintage and contemporary equipment makes it a versatile addition to any setup, while its rich feature set ensures it meets the demands of both live performance and studio use. The KORG ARP 3620 embodies a blend of classic design and modern functionality, offering a unique sonic experience.

KORG ARP 3620 F.A.Q.

How do I connect the KORG ARP 3620 to an external sequencer?

To connect the KORG ARP 3620 to an external sequencer, use the CV and Gate outputs on the sequencer and connect them to the CV and Gate inputs on the ARP 3620. Ensure the sequencer is set to output the appropriate voltage levels for the ARP.

What is the best way to clean and maintain the KORG ARP 3620 keyboard?

To clean the KORG ARP 3620 keyboard, use a soft, dry cloth to wipe down the keys and the body. Avoid using any liquid cleaners or solvents. For maintenance, periodically check for any loose connections and clean the contacts with a contact cleaner.

How can I troubleshoot if the keys on my ARP 3620 are not responding?

If the keys on your ARP 3620 are not responding, check if the power supply is connected properly. Ensure that the keyboard is not in a local off mode. Clean the key contacts and check the internal ribbon cables for any disconnections.

What should I do if the pitch of my KORG ARP 3620 is unstable?

If the pitch is unstable, first check the tuning controls and make sure they are not loose or dirty. Also, verify the power supply voltage is stable. If the issue persists, recalibrate the oscillators according to the service manual guidelines.

How do I use the portamento feature on the ARP 3620?

To use the portamento feature, adjust the portamento slider on the ARP 3620. This controls the glide time between notes. Experiment with different settings to achieve the desired effect.

Can I replace the keys on my ARP 3620 if they are damaged?

Yes, the keys on the ARP 3620 can be replaced. You will need to purchase compatible replacement keys and follow the disassembly instructions in the service manual to replace them.

What is the function of the LFO on the ARP 3620 and how do I use it?

The LFO (Low-Frequency Oscillator) on the ARP 3620 is used to modulate parameters such as pitch or filter cutoff. Use the LFO controls to adjust the rate and depth of modulation, and route it to your desired destination.

How can I fix a dead key on my ARP 3620?

To fix a dead key, open the keyboard and clean the contacts with a contact cleaner. Check for any broken connections or mechanical issues. If the problem persists, the key or contact may need to be replaced.

What is the correct way to store the ARP 3620 to ensure its longevity?

Store the ARP 3620 in a dry, cool environment away from direct sunlight. Cover it with a dust cover when not in use and avoid stacking heavy objects on top of it. Regularly inspect it for signs of dust or moisture.

How do I perform a factory reset on the KORG ARP 3620?

The ARP 3620 does not have a factory reset function since it is an analog synthesizer. Manual recalibration may be required to restore it to its original settings.