AP6040 - Sound system YORKVILLE - Free user manual and instructions

USER MANUAL AP6040 YORKVILLE

Instructions pertaining to a risk of fire, electric shock, or injury to a person

Warning: To reduce the risk or fire or electric shock, do not expose this apparatus to rain or

moisture. Do not use this apparatus near water!

Warning: When using electric products, basic precautions should always be followed,

Ground Switch Switching the ground switch on the rear panel will disconnect chassis ground from circuit ground. Safety (earth) ground is still connected to the chassis. We do not recommend lifting the ground strap unless you are experiencing problems with ground loop hum in multiple amplifier setups where lifting the ground straps of all but one amplifier cures the hum problem. CAUTION: Sometimes hum problems are an indication of improper AC wiring somewhere else in your system. Don’t just doctor the symptom by lifting grounds. Fix the cause by making sure that the proper electrical wiring safety regulations have been adhered to. Limiter Switch With the internal limiters activated, the AP6040’s gain is continuously adjusted to fit the signal within the available dynamic range. Occasional clipping is permitted. The limiters will not only help to protect your system’s horns and tweeters, but will automatically make the best use of the available dynamic headroom. With the limiters activated, all you need to do is turn up the signal level until you start to see some clipping. The limiters will make sure that you are getting the maximum clean power output at all times. Setting the switch to the IN position completely disables both limiters. Protect LED Modes The AP6040 can be configured for dual-MONO or STEREO operation via the rear panel MODE switch. The following is a description of each mode: Mono Mode

• Channel A and B inputs are paralleled.
• Each gain control adjusts the signal level for its respective channel,
• Output signals are of equal phase.
• Two loads are driven.
• Loads are connected between the BLACK and RED post on each channel. Stereo Mode
• Two independent amplifiers, Amp A and Amp B.
• Two loads are driven.
• Loads are connected between the BLACK and RED posts on each channel. Subsonic Filter Switch The AP6040 features a specially designed subsonic filter which effectively blocks potentially destructive energy in the band below 40 Hz. The filter provides a 12 dB/ octave. skirt below 40 Hz. It is implemented with a two pole network designed to minimize phase shift down to 40 Hz. We recommend using this filter in conjunction with some subwoofers and with all high power full range cabinets. With the filter disabled, the AP6040 is flat down to 20‑Hz, and rolls off at 12dB/Oct below that. In the event of a shorted load or a load which is of too low an impedance for the amplifier to handle the PROTECT LED will flash alternately on and off at about 3 second intervals. The sound may come on and off at ½ second intervals. In this case, the fault is in the speakers or the speaker cables and should be located and remedied. No reset of the AP6040 is required to restore proper operation. The PROTECT LED will stay on if the amplifier has overheated. Check the speaker load impedance and any restrictions to air flow at the air intake or exhaust vents of the amplifier. Short Circuit Protection The AP6040 is fully protected against all possible passive load conditions. It can operate into a dead short continuously without damage. (However, we don’t recommend that you short your AP6040 “just for fun.” Shorts do create a lot of stress on the output devices). The output stage uses a unique triple slope VI-limiting scheme which is sophisticated enough to remain inert during transient currents in excess of 100 Amperes and phase angles of more than 45 degrees, yet is capable of protecting the output stage from damage due to accidental short circuits and improper loads. DC Protection In the unlikely event of the AP6040’s outputs going DC, a thyristor circuit will short the output terminals and divert all potentially harmful currents away from your speakers. Thermal Protection In the unlikely event that the AP6040 overheats, the signal will be sporadically cut off and the PROTECT LED will stay on. The AP6040 is designed and tested to operate under “worst case” conditions without shutting down, so if you experience a thermal shut down you should check for blocked air flow. CAUTION: The AP6040 can deliver over 2000 Watts of power into a speaker load. Yorkville’s own high power speaker systems have circuit-breaker protection built in. Although these speakers will protect themselves, they are unlikely to be damaged by a AP6040. However, many other speaker manufacturers make “high power cabinets” with no protection features at all. Yorkville Sound is not responsible for any damage which may result as a consequence of exceeding such a speaker’s power handling capability. Yorkville’s two year unconditional warranty does not cover any consequential damages to non-Yorkville equipment. Please consider these facts carefully before you choose to run your AP6040!

Cooling The fan draws air in from the front and expels hot air through the rear vents. This is compatible with most installations. Since hot air rises, the heated air forcibly expelled from the back tends to rise away from the equipment rack. This draws cool air from the floor upwards into the front of the rack. In some cases where the rear of the rack is obstructed, it may be necessary to install rack fans to aid cooling. If there are no obstructions, no secondary cooling is required. Clip LEDs The CLIP LEDS on the front panel will visibly indicate any signal excursion beyond the dynamic headroom of the amplifier. Reliability The AP6040 is designed and manufactured by Yorkville Sound. Each unit undergoes a thorough, temperature cycled burn-in period, and each circuit is tested by both manual and sophisticated computer controlled equipment which is capable of identifying any deviation from the design center parameters. The design of the AP6040 is conservative with respect to the power handling capabilities of the output devices. The topology guarantees that thermal stress not secondary breakdown will set the limits of operation, while the computer optimized heat dissipation system insures that excessive thermal stress will not occur. Yorkville’s reputation as a manufacturer of reliable equipment will be further enhanced by the AP6040. The AP6040 is not only suitable for use in both heavy duty touring sound reinforcement systems but also when high headroom and low distortion are needed to fully reproduce the dynamic range and clarity of today’s CD recordings. It is built to survive grueling road conditions and constant 4 Ohm operation. Its reliability in a fixed installation running 4 or 8 ohm studio monitors is without parallel. Fan Filter Maintenance The AP6040 is factory equipped with fan filters mounted on the air-intake grills located on the amplifier’s front panel. Regular cleaning of these filters will increase the amplifier’s long term reliability. The filters should be removed and washed at the first sign of visible clogging. This will typically occur every four to six weeks depending on use and environment. Replacement filters are inexpensive and can be ordered through Yorkville dealers. The foam filters should be removed if a regular inspection schedule is not going to be followed. The amplifier can operate without the filters in place, but the amplifier should be cleaned internally by a qualified service technician when dust is visible on the heatsink fins. Note: In an unusually dusty location, without regular filter inspections, removing the foam filter can extend the operating time before thermal shutdown could occur. At that time, the internal heatsinks should be cleaned thoroughly. Output Connections

WARNING: When driven to full power, there is more than

100Vrms appearing between the binding posts. This represents a significant shock hazard and due care should be taken when making any speaker connections. Ensure that no strands of bare conductor are exposed after inserting the speaker wire into the hole in the side of the binding post terminals. The AP6040 has 5–way binding posts and Neutrik four contact Speakon™ connectors for output speaker connections. Connection to the binding posts can either be made with a banana plug inserted into the end of the post or by wires wrapped around the threads and tightened. There are two Speakon™ connectors, one for each channel output. All connectors are connected to the amplifier’s outputs whether the amplifier is in stereo or mono modes. Connection configurations are labeled on the back panel. Each Speakon™ output connector (output A and output B) are wired in parallel with it’s respective binding post. Note: Do not operate in Bridge Mode and Do Not Ground Output Terminals! Fan Filter Maintenance

All values are in WATTS. Measurements were made at the 0.1% distortion point. Some CONTINUOUS AVERAGE POWER measurements required line currents greater than 30 Amps. The amplifier under test was plugged into an IDEAL POWER LINE consisting of a REGULATED 120 VAC RMS 60 Hz pure sine wave. Ordinary AC "wall outlet" lines will always exhibit varying and unpredictable amounts of sag. To produce objectively verifiable and accurate specifications these unknown factors must be eliminated by using an ideal AC line. When using an ordinary electrical outlet, it will usually be possible to get 3600 Watts when the AP6040 drives 4 ohms. The BURST measurements use a 10mS burst at 1KHz with a 1/8 second pause between bursts. The 1KHz burst represents the maximum possible sine wave output power. SPEAKON™ PIN CONFIGURATION MANUAL. OPERATING D'INSTRUCTION.

A( 1 – ) B ( 1 – TWO

PIN 2+ PIN 2 – 4-Conducter Speakon Cable AP 6040 Specifications Amplifier class

Coninuous Average Power @ 8 ohms BCD (Watts) 1250 (x2) Coninuous Average Power @ 4 ohms BCD (Watts) 2000 (x2) Coninuous Average Power @ 2 ohms BCD (Watts)

Continuous Average Power Bridged BCD (Watts)

Burst Average Power Bridged BCD (Watts)

Outputs - Speakon 4-pin

Outputs - Binding Post

Power Consumption (typ/max) Rack Spaces Transformer Type 1800/3000 Watts Toroidal Exterior Finish Baked, Black Painted Dimensions (DWH /D fm ears, inches) 19 x 18.5 x 25 x 17.6 Dimensions (DWH /D fm ears, cm) Weight (lbs / kg)

DESIGNED & MANUFACTURED BY

AP6040 Charge (OHMS)

Yorkville Sound Inc. 4625 Witmer Industrial Estate Niagara Falls, New York 14305 USA Printed in Canada REAL Gear. REAL People.