Peavey PV 900, PV 2600, PV 1500 manual Bridge Mode, Ddt

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BRIDGE MODE

The Bridge mode on stereo amplifiers is often misunderstood relating to actual operation and usage. In basic terms, when a 2-channel amplifier is operated in the Bridge mode, it is converted into a single-channel unit with a power rating equal to the sum of the power rating for each channel, at a load of twice that of the single-channel rating. For example, the PV 1500 is rated at 500 watts RMS per channel into 4 ohms. The Bridge rating is 1000 watts RMS into 8 ohms (minimum load). Bridge mode operation is accomplished by placing the MODE switch in the BRIDGE position, using only the BRIDGE Speakon® connector or the red binding posts for the output, and using the CHANNEL A input. All CHANNEL B input functions are defeated and serve no purpose now. Bridge mode operation can be used to drive sound distribution systems in very large public address applications. Another common use for the Bridge mode is in subwoofer applications where very high power levels are required to reproduce extremely low frequencies with adequate headroom. Such enclosures usually contain 2 or 4 loudspeakers to handle the power levels involved. For Bridge mode usage, the enclosure impedance must be 8 ohms.

DDT™

Peavey’s patented DDT (Distortion Detection Technique) compression circuit enables the sound technician to maximize the performance of the amplifier/speaker combination by preventing the power amplifier from running out of headroom (clipping). This compression system is activated by a unique circuit that senses signal conditions that might overload the amplifier and activates compression (reduces the channel gain) when clipping is imminent. The threshold of compression is clipping itself, and no specific threshold control is used. This technique effectively utilizes every precious watt available for the power amplifier to reproduce the signal, while at the same time minimizing clipping and distortion. DDT significantly reduces the potential of loudspeaker degradation and damage, and is the most effective, automatic, hands-off approach to the problem of power amplifier clipping.

Since PV series power amplifiers use a circuit breaker for overcurrent protection, the DDT compression system plays an even more important role in continuous performance by preventing each channel from clipping and overload. Continuous operation at clipping can cause the circuit breaker to trip, but with the DDT activated, this problem is minimized. For this reason, the DDT compression system should always be enabled.

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Contents S E R I E S a M P S Page Important Safety Instructions Installation PV Series Stereo Power AmplifierBasic Setup IntroductionPower Leds PWR Front Panel FeaturesSignal Activity Leds SIG Power SwitchIEC Mains Connector Back Panel FeaturesCircuit Breaker Domestic AC Mains CordDDT Distortion Detection Technique Switch Mode SwitchSpeakon Outputs FAN GrillCombo Input Connector Industrial and Commercial InstallationsThru OUT Jacks DDT Bridge ModeRated Output Power SpecificationsPage Amplificateurs Proffessionnels Stereo PV Series DeballageMise EN Route Rapide Panneau Avant Leds DE Signal SIGLeds D’ALIMENTATIONPWR Leds DDTDisjoncteur Panneau ArriereConnecteur IEC Ne jamais déconnecter la connexion de terre de votre unitéSorties Speakon Selecteur DE ModeSelecteur DDT Distortion Detection Technique Ouverture DE VentilationMode Pont Bridge Installations Industrielles ET CommercialesSpecifications Introducción Serie DE Amplificadores Profesionales Estéreo PVDesempaque InstalaciónInterruptor DE Corriente Funciones DEL Panel FrontalBraker Funciones DEL Panel TraseroConector Para Cable DE Corriente IEC Cable DE Corriente Domestico Para EE.UUCambio DE Modo Salidas SpeakonInterruptor DDT Técnica DE Detección DE Distorsión Parrilla DEL VentiladorInstalaciones Industriales Y Comerciales Jacks DE Salida ThruEinleitung PV Series STEREO-ENDSTUFEAuspacken Erste InbetriebnahmeFunktionen AN DER Vorderseite POWER-SCHALTERFunktionen AUF DER Rückseite MODE-SCHALTER SPEAKON-AUSGÄNGEDDT-SCHALTER Distortion Detection Technique 12 LüftergitterInstallationen in Industrie UND Gewerbe COMBO-EINGANGSBUCHSENTHRU-OUT-KLINKEN BRIDGE-MODUS BRUMMEN/RAUSCHEN Peavey Electronics Corporation Limited Warranty
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