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NAD 3240PE

Stereo Integrated Amplifier

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NAD 3240PE

Specifications

Power output: 40 watts per channel into 8Ω (stereo)

Frequency response: 20Hz to 20kHz

Total harmonic distortion: 0.03%

Damping factor: 50

Input sensitivity: 3.5mV (MM), 160mV (line)

Signal to noise ratio: 76dB (MM), 102dB (line)

Dimensions: 420 x 108 x 380mm

Weight: 6.7kg

Year: 1989

Price: GBP £199 (1989)

Downloads

service manual (no schematics)  English

instruction/owners manual  English - Isidore Cat

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Reviews

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rating
Submitted by Rizal

Audiophile amp with small budget

 

Comments

re: 3240PE

Schematics are for the most part un-useable is there an amp with similar output/driver stages that may be more readable??

The faults of this unit are in the stage prior to the Main in/ pre-out socket but after the volume control. When left ch is used as input and the unit is in mono mode both outputs have fault. input sine-wave, output Neg going pulses 20% duty cycle.
It acts like the driver stage has a supply resistor gone high. When I figure it out I will add new comment.

re: 3240PE

Hi from near Milan,Italy
I've just repaired a broken NAD PE3240 found in a garage sale for 5 euro.
The amp was almost completely silent,connecting a source resulted in a weak but almost undirstoted signal on outputs,furthermore,switching from Tuner to Phono revealed a strong "click",that tipical sound that you get connecting an audio input to a DC via a capacitor.It was due to the connection to the phono-pre double op-amp, a JRC NJM2043D,wich outputs were almost clamped to positive supply pin 8,because of lack of negative supply on pin 4.

The schematic,was readable enough to show that the regulated DC for op amps comes from Q501-Q502,the latter is for negative supply.It's base,normaly tied at -20v by D503, was shortened to ground by a damaged C516,47uF,25V.

I don't know if this could be useful in your case,because the fault i've found looks randomatic.I dont'know any reason why this capacitor should be stressed more than other components.
Anyway i want to share this experience,hoping it could be useful in other cases.
Good luck
Diego

NAD 3240PE Trouble Shoot

Hi all,

I have brought my 3240 out of storage and found the base response is "fuzzy" and distorted as the volume increases. Anyone with an idea of the issue or had a similar problem?

BT

Capacitors

Taking into account the age of the unit, the first thing I'd do is open it up and check for leaking/bulging electrolytic capacitors.

Regards,
JaS

NAD3240PE

THANKS!

Isidore Cat's picture

NAD 3240pe

Thank you very much...

NAD 3240PE

Hi there, im needing a circuit diagram for the NAD 3240PE. Found a few online but not really legiable.

Please assist

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