AP6020
AP6020
PROTECT POWER
PUSH TO RESET
CLIP CLIP 
SIGNAL
MODEL TYPE:YS6020
IMPORTANT SAFETY INSTRUCTIONS
This lightning flash with arrowhead symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
Ce symbole d’éclair avec tête de flèche dans un triangle équilatéral est prévu pour alerter l’utilisateur de la présence d’un « voltage dangereux » non-isolé à proximité de l’enceinte du produit qui pourrait être d’ampleur suffisante pour présenter
un risque de choque électrique.
The exclamation point within an equilatereal triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in
the literature accompanying the appliance.
Le point d’exclamation à l’intérieur d’un triangle équilatéral est prévu pour alerter l’utilisateur de la présence d’instructions importantes dans la littérature accompagnant l’appareil en ce qui concerne l’opération et la maintenance de cet appareil.
S2125A
FOLLOW ALL INSTRUCTIONS
Instructions pertaining to a risk of fire, electric shock, or injury to a person
CAUTION: TO REDUCE THE RISK OF ELECTRIC
SHOCK, DO NOT REMOVE COVER (OR BACK).
NO USER SERVICEABLE PARTS INSIDE.
REFER SERVICING TO QUALIFIED
SERVICE PERSONNEL.
Read Instructions: The Owner’s Manual should be read and understood before operation of your unit. Please, save these instructions for future reference and heed all warnings.
Clean only with dry cloth.
Packaging: Keep the box and packaging materials, in case the unit needs to be returned for service.
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, including the following:
Power Sources
Your unit should be connected to a power source only of the voltage specified in the owners manual or as marked on the unit. This unit has a polarized plug. Do not use with an extension cord or receptacle unless the plug can be fully inserted. Precautions should be taken so that the grounding scheme on the unit is not defeated. An apparatus with CLASS I construction shall be connected to a Mains socket outlet with a protective earthing ground. Where the MAINS plug or an appliance coupler is used as the disconnect device, the disconnect device shall remain readily operable.
Hazards
Do not place this product on an unstable cart, stand, tripod, bracket or table. The product may fall, causing serious personal injury and serious damage to the product. Use only with cart, stand, tripod, bracket, or table recommended by the manufacturer or sold with the product. Follow the manufacturer’s instructions when installing the product and use mounting accessories recommended by the manufacturer. Only use attachments/accessories specified by the manufacturer
Note: Prolonged use of headphones at a high volume may cause health damage on your ears.
The apparatus should not be exposed to dripping or splashing water; no objects filled with liquids should be placed on the apparatus.
Terminals marked with the “lightning bolt” are hazardous live; the external wiring connected to these terminals require installation by an instructed person or the use of ready made leads or cords.
Ensure that proper ventilation is provided around the appliance. Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (including amplifiers) that produce heat.
No naked flame sources, such as lighted candles, should be placed on the apparatus.
Power Cord
Do not defeat the safety purpose of the polarized or grounding-type plug.A polarized plug has two blades with one wider than the other. A grounding type plug has two blades and a third grounding prong.The wide blade or the third prong are provided for your safety. If the provided plug does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.The AC supply cord should be routed so that it is unlikely that it will be damaged. Protect the power cord from being walked on or pinched particularly at plugs. If the AC supply cord is damaged DO NOT OPERATE THE UNIT.To completely disconnect this apparatus from the AC Mains, disconnect the power supply cord plug from the AC receptacle.The mains plug of the power supply cord shall remain readily operable.
Unplug this apparatus during lightning storms or when unused for long periods of time.
Service
The unit should be serviced only by qualified service personnel. Servicing is required when the apparatus has been damaged in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
SUIVEZ TOUTES LES INSTRUCTIONS
Instructions relatives au risque de feu, choc électrique, ou blessures aux personnes
AVIS: AFIN DE REDUIRE LES RISQUE DE CHOC
ELECTRIQUE, N’ENLEVEZ PAS LE COUVERT (OU LE
PANNEAU ARRIERE) NE CONTIENT AUCUNE PIECE
REPARABLE PAR L’UTILISATEUR.
CONSULTEZ UN TECHNICIEN QUALIFIE
POUR L’ENTRETIENT
Veuillez Lire le Manuel: Il contient des informations qui devraient êtres comprises avant l’opération de votre appareil. Conservez. Gardez S.V.P. ces instructions pour consultations ultérieures et observez tous les avertissements.
Nettoyez seulement avec le tissu sec.
Emballage: Conservez la boite au cas ou l’appareil devait être retourner pour réparation.
Avertissement: Pour réduire le risque de feu ou la décharge électrique, n'exposez pas cet appareil à la pluie ou à l'humidité. N’utilisez pas cet appareil près de l’eau!
Attention: Lors de l’utilisation de produits électrique, assurez-vous d’adhérer à des précautions de bases incluant celle qui suivent:
Alimentation
L’appareil ne doit être branché qu’à une source d’alimentation correspondant au voltage spécifié dans le manuel ou tel qu’indiqué sur l’appareil. Cet appareil est équipé d’une prise d’alimentation polarisée. Ne pas utiliser cet appareil avec un cordon de raccordement à moins qu’il soit possible d’insérer complètement les trois lames. Des précautions doivent êtres prises afin d’eviter que le système de mise à la terre de l’appareil ne soit désengagé. Un appareil construit selon les normes de CLASS I devrait être raccordé à une prise murale d’alimentation avec connexion intacte de mise à la masse. Lorsqu’une prise de branchement ou un coupleur d'appareils est utilisée comme dispositif de débranchement, ce dispositif de débranchement devra demeurer pleinement fonctionnel avec raccordement à la masse.
Risque
Ne pas placer cet appareil sur un chariot, un support, un trépied ou une table instables. L’appareil pourrait tomber et blesser quelqu’un ou subir des dommages importants. Utiliser seulement un chariot, un support, un trépied ou une table recommandés par le fabricant ou vendus avec le produit. Suivre les instructions du fabricant pour installer l’appareil et utiliser les accessoires recommandés par le fabricant. Utilisez seulement les attachements/accessoires indiqués par le fabricant
Note: L'utilisation prolongée des écouteurs à un volume élevé peut avoir des conséquences néfastes sur la santé sur vos oreilles. .
Il convient de ne pas placer sur l’appareil de sources de flammes nues, telles que des bougies allumées.
L’appeil ne doit pas être exposé à des égouttements d’eau ou des éclaboussures et qu’aucun objet rempli de liquide tel que des vases ne doit être placé sur l’appareil.
Assurez que lappareil est fourni de la propre ventilation. Ne procédez pas à l’installation près de source de chaleur tels que radiateurs, registre de chaleur, fours ou autres appareils (incluant les amplificateurs) qui produisent de la chaleur.
Les dispositifs marqués d’une symbole “d’éclair” sont des parties dangereuses au toucher et que les câblages extérieurs connectés à ces dispositifs de connection extérieure doivent être effectivés par un opérateur formé ou en utilisant des cordons déjà préparés.
Cordon d’Alimentation
Ne pas enlever le dispositif de sécurité sur la prise polarisée ou la prise avec tige de mise à la masse du cordon d’alimentation. Une prise polarisée dispose de deux lames dont une plus large que l’autre. Une prise avec tige de mise à la masse dispose de deux lames en plus d’une troisième tige qui connecte à la masse. La lame plus large ou la tige de mise à la masse est prévu pour votre sécurité. La prise murale est désuète si elle n’est pas conçue pour accepter ce type de prise avec dispositif de sécurité. Dans ce cas, contactez un électricien pour faire remplacer la prise murale. Évitez d’endommager le cordon d’alimentation. Protégez le cordon d’alimentation. Assurezvous qu’on ne marche pas dessus et qu’on ne le pince pas en particulier aux prises. N’UTILISEZ PAS L’APPAREIL si le cordon d’alimentation est endommagé. Pour débrancher complètement cet appareil de l’alimentation CA principale, déconnectez le cordon d’alimentation de la prise d’alimentation murale. Le cordon d’alimentation du bloc d’alimentation de l’appareil doit demeurer pleinement fonctionnel.
Débranchez cet appareil durant les orages ou si inutilisé pendant de longues périodes.
Service
Consultez un technicien qualifié pour l’entretien de votre appareil. L'entretien est nécessaire quand l'appareil a été endommagé de quelque façon que se soit. Par exemple si le cordon d’alimentation ou la prise du cordon sont endommagés, si il y a eu du liquide qui a été renversé à l’intérieur ou des objets sont tombés dans l'appareil, si l'appareil a été exposé à la pluie ou à l'humidité, si il ne fonctionne pas normalement, ou a été échappé.
safety-4v7 • May 7/2008
Introduction
Your new Yorkville AP6020 power amplifier is designed and built to provide years of trouble free performance. The AP6020 combines the field proven reliability of our Audiopro amplifiers with customer requested features such as switchable limiter, a Mono/Stereo/Bridge switch, and SPEAKON™ output connectors as well as binding posts.
The AP6020 weighs a comfortable but solid 64 pounds, fits into three rack spaces, and reproduces music with over 7000 Watts of headroom. It will drive reactive phase shifted loads with no difficulty - even though it is fully protected from accidental short circuits. Our design goal was to create an amplifier that would do exactly what an amplifier should do: reproduce music with great power, complete reliability, and uncompromising signal fidelity. We think you will agree that the Yorkville AP6020 does exactly that.
Inputs
Balanced Inputs
Either XLR or two–circuit ‘Ring, Tip, Sleeve’ Stereo 1/4” PHONE cords may be used. Each channel’s XLR input is internally paralleled with its phone input (The TIP of the channel ‘A’ PHONE input is connected to pin 2 of its XLR input, the RING is connected to pin 3, and the Sleeve is connected to PIN 1). PIN 2 is in phase, PIN 3 is 180 degrees out of phase, and PIN 1 is ground. We recommend using balanced lines for the best hum-free performance, particularly when chaining multiple amplifiers.
Unbalanced Inputs
Ordinary single circuit Standard 1/4” PHONE plugs may be used to connect unbalanced signals. IMPORTANT NOTE: Such plugs effectively connect the ring terminal to sleeve ground, so they work correctly. However, if you use a Stereo 1/4” PHONE plug on an unbalanced line, you MUST short the Ring terminal to the sleeve terminal, otherwise the sensitivity will be 6dB lower than is specified! (The same applies to the XLR input: To connect an unbalanced source via the XLR input, you must connect the signal to Pin 2 and ground BOTH Pin 1 and Pin 3).
Remote Referencing
You can approach balanced performance with unbalanced sources by utilizing the remote reference feature of the AP6020. Connect a balanced cable to the AP6020 just as you would if you were running a balanced line. At the other end, connect Pin 3 and Pin 1 together, (or connect ring to sleeve if you are using a PHONE plug cable), and plug this modified end into your unbalanced piece of equipment. This con-
nection enables the AP6020’s input to look down the cable directly at the output jack of the unbalanced equipment. Any hum voltage generated across the cable’s impedance will be attenuated by the common mode rejection of the AP6020.
Driving Multiple AP6020’s
In large installations it is often desirable to operate many amplifiers in tandem. Since each channel’s XLR input is internally paralleled with its phone input, you may use the remaining input jack as an output to the next amplifier. Obviously you will need both XLR to XLR and PHONE to PHONE patch cords if you are going to tandem more than two amplifiers.
NOTE: These patch cords MUST be balanced whether the input signal is balanced or unbalanced!
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.
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Modes
The AP6020 can be configured for Bridge, dual-MONO or STEREO operation via the rear panel MODE switch. The following is a description of each mode:
Mono Mode
•Channel A & 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.
Bridge Mode
•Channel A&B inputs are paralleled. GAIN B has no effect.
•Output signals are equal in amplitude but opposite in phase.
•One load is driven.
•The load is connected between the two RED binding posts. The
BLACK posts are not used.
Subsonic Filter Switch
The AP6020 features a specially designed subsonic filter that 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 AP6020 is flat down to 20 Hz, and rolls off at 12dB/Oct below that.
Limiter Switch
With the internal limiters activated, the AP6020’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
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 AP6020 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 AP6020 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 AP6020 “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 150 Amperes and phase angles of more than 45 degrees. It 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 AP6020’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 AP6020 overheats, the signal will be sporadically cut off and the PROTECT LED will stay on. The AP6020 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.
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 AP6020 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 AP6020 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 AP6020.
The AP6020 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 2-Ohm operation. Its reliability in a fixed installation running 4 or 8-ohm studio monitors is without parallel.
Fan Filter Maintenance
The AP6020 is factory equipped with fan filters mounted on the airintake 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
CAUTION: The AP6020 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 AP6020. 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 AP6020!
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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. (see diagram, next page)
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 AP6020 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.
Speakon™ output A also doubles as the A&B/Bridge connector. This Speakon™ contains both channels on one connector. This is convenient when connecting one speaker to the amplifier in bridge mode where the speaker is connected across the positives of each amplifier output. Configure the mode switch for bridge and connect the speaker to pins +1 and +2 of the bridge/bi-amp Speakon (figure 3).
To connect a bi-amp speaker, configure the amplifier for stereo and connect to the bridge/bi-amp connector but use all four terminals in the Speakon connector which will connect A and B outputs separately to the speaker (figure 2). Connection configurations are labeled on the back panel.
AP60xx AIR FILTER REPLACEMENT
and MAINTENANCE DIAGRAM
SLOT |
YS# 8379 Foam Filte |
|
YS#8807 Mounting Screw |
|
TAB |
Insert AirFlow Grille Tab |
YS#Z260 AirFlow Grille |
into Slot on Chassis first. |
|
Power Output
Both Channels Driven
Load |
1 KHz Cont. |
1 KHz Burst |
(OHMS) |
Avg. |
|
4 |
1200 |
2000 |
2 |
2000 |
3600 |
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 elecrtical outlet, it will usually be possible to get 3600 Watts when the AP6020 drives 2 ohms. The BURST measurements use a 10ms burst at 1Khz with 1/8 second pause between bursts. The 1Khz burst represents the maximum possible sine wave output power.
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