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SPECIFICATIONS

Power Rating: 

400 watts per channel into 4 ohms at less than 0.04% THD from 20 Hz to

20 kHz with both channels driven.

255 watts per  channel into 8 ohms at less than 0.025% THD from 20 Hz to

20 kHz with both channels driven.

800 watts into 8 ohms at less than 0.04% THD from 20 Hz to 20  kHz in

monophonic  bridged operation.

IM Distortion 

(SMPTE): Less than 0.007% from 1 watt to 225 watts, each channel, into 8

ohms.

Typical THD at 255 watts into 8 ohms:

1 kHz: 0.002%

10  kHz:  0.007%

Frequency Response into 8

 

ohms: 

-3 dB,  2 Hz  to 120 kHz at  1  watt.

±0.5 dB, 5 Hz to 40  kHz at 255 watts.

Typical Channel Separation at 1  kHz:  65 

dB

Signal to Noise Ratio: 

Exceeds 100  dB referred to 255 watts into 8 ohms, unweighted.

Exceeds 90  dB referred to 1 watt into 8 ohms, A weighting.

Input Impedance: 

47,000  ohms, in parallel with  50K  ohms input level control.

Input Sensitivity:

2.35 volts for 255 watts into 8 ohms; 0.14 volt for 1 watt.

2 volts for 400 watts into 4 ohms; 0.08 volt for 1  watt.

Damping Factor: 

200 to 1  kHz into 8 ohms; 60 to 10  kHz into 8 ohms.

Rise Time: 

10 kHz, 80 volts p/p square wave, 10% to 90%:  2.5µs.

Slew Rate: 

1 kHz,  120 volts p/p square wave, 40  V/µS.

Semiconductor Complement: 

27 transistors, 12 power  MOSFETs,  33 diodes, 8 zener diodes,

1 integrated circuit, 1 diode bridge.

Power Consumption: 

240 VA quiescent; 1200 VA   @  rated power into 8 ohms, both channels

driven.

Size: 

7” high plus  1/4”   feet, 19” wide, 13” deep plus 1” for handles.

Net Weight: 48 

lbs.

Shipping Weight: 52 

lbs.

WARNING: 

TO  PREVENT FIRE OR SHOCK HAZARD, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE.

CAUTION: 

For continued protection, replace the power fuse only with the same type  and rating as indicated.

Содержание P505

Страница 1: ...PERATION CAUTION IF THE SPEAKER FUSES BLOW SOME DISTORTED SOUND CAN BE HEARD THEREFORE IF AMPLIFIER MALFUNCTIONS ALWAYS CHECK FOR BLOWN FUSES FIRST LM135 THE DAVID HAFLER COMPANY 5910 Crescent Boulevard Pennsauken New Jersey 08109 Hafler P505 Professional Power Amp ...

Страница 2: ...ferred to 1 watt into 8 ohms A weighting Input Impedance 47 000 ohms in parallel with 50K ohms input level control Input Sensitivity 2 35 volts for 255 watts into 8 ohms 0 14 volt for 1 watt 2 volts for 400 watts into 4 ohms 0 08 volt for 1 watt Damping Factor 200 to 1 kHz into 8 ohms 60 to 10 kHz into 8 ohms Rise Time 10 kHz 80 volts p p square wave 10 to 90 2 5µs Slew Rate 1 kHz 120 volts p p sq...

Страница 3: ... and equipment service and provides a high level of protection to associated equipment and operating personnel P505 POWER AS A FUNCTION OF IMPEDANCE POWER PER CHANNEL BOTH CHANNELS DRIVEN The P505 incorporates a number of protective devices Separate power supply fuses for B and B on each channel individual thermal sensors on each heat sink a relay to disengage the output if excessive DC offset is ...

Страница 4: ...avier 3 wire cord Input The amplifier is supplied with standard 2 circuit tip sleeve or T S phone jacks for normal unbalanced input connections These use single conductor shielded cable shield connected to the sleeve or you may choose two wire shielded cable With two wire cables and an unbalanced input the signal or hot black lead connects to the plug tip and the ground white or red lead connects ...

Страница 5: ...r the rubber clad cables with woven shielding outperform vinyl coverings The vinyl insulation is usually supplied with a foil shield which can be easily tom so plugs must be wired with great care If permanent wiring involves fishing cables through conduits the vinyl cable is easier to use because it has less surface resistance but the foil shield is susceptible to splitting with undue stress Some ...

Страница 6: ...al having a specific porosity so exact replacement is best They may be ordered from the Hafler Company as part AF002 6 Back Panel Controls An input level control adjusts the sensitivity of each channel They are usually left at full clockwise rotation for maximum sensitivity and best signal to noise ratio Then 2 volts will drive each channel to full output 4 ohm load These controls have a B taper w...

Страница 7: ...50 or 60 Hz power lines The Export version includes an additional terminal strip to terminate the extra transformer leads In units supplied for 200 volt and higher AC lines the line fuse is a 7 ampere slo blo type and a different fan is installed along with different fan controlling power resistors which are mounted on the underside of the audio module The diagrams below show schematically and pic...

Страница 8: ...low impedance load where the fuse sizes may need to be increased If the amplifier requires factory service and the power transformer output appears normal when its secondary leads are disconnected from the diode bridge the transformer can be removed and the rest of the amplifier returned for service This greatly reduces the cost of shipping and the risk of damage in transit If you have isolated th...

Страница 9: ...iven in the event of excessive signal levels The output current is limited by the B and B fuses and the speaker fuses A protective relay circuit has a j section low pass filter which prevents signals above 10 H z from triggering the relay This circuit allows direct current to pass to IC101 which senses any offset above 3 5 volts and then opens the relay to protect the load RI06 and R107 form the r...

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Страница 12: ...ch QBI I5 TAI I2 RPOI I RPOI I RF036 TAI I6 TAI I7 SZI 13 SLIII s402 S403 TR40 I TR402 TR40 I TS40 I TS402 DPDT slide switch DPDT slide switch Thermal breaker Thermal breaker Inrush limiter Thermal sensor Thermal sensor Fan I20 volt Fan 200 240 volt alternate SCHEMATIC DIAGRAM P505 PowerAmplifier r Copyright 1985 All rights reserved SZl22 SZl22 S F 0 2 4 S F 0 2 4 RZOl6 S F 0 2 5 S F 0 2 5 AAI I4 ...

Страница 13: ...anty 4 A description of the malfunction under occurred and whether it is intermittent what conditions it You are responsible for proper packing Insure it for the retail value United Parcel Service is suggested for domestic shipments and is the usual carrier for its return Units which required service under the warranty will normally be returned by UPS prepaid within continental USA Other return sh...

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