I have a pair of Maudaunt Short Festival 3 speakers which are getting on a bit now.
They have of late started to sound a bit flat and what i would describe as fluffy s they dont seem to have any definition anymore. I have put this down to the capacitors and possibly the resistors in the crossovers as these speakers are well over 30 years old now.
The drivers dont show any sign of roughness and are smooth in action so i dont think they are the issue.
Anyway, the crossover (picture attached) has 1x ALCAP 10uf 50v capacitor, 1x ALCAP 5uf 50v Capacitor and a 10w 2 ohm resistor.
The resistor is proving difficult to get with the correct values unless i get one shipped in by rickshaw from China, which will probably be of questionable quality.
I can get 1.8 Ohm 10w, 2.2 Ohm 10v and 2.2 Ohm 20W, but not 2 Ohm 10w.
Would using a resistor of a slightly different value cause any problems.
I have been looking at Monacor caps and resistors, are these any good or should i be looking at something else. All advice would be appreciated.
They have of late started to sound a bit flat and what i would describe as fluffy s they dont seem to have any definition anymore. I have put this down to the capacitors and possibly the resistors in the crossovers as these speakers are well over 30 years old now.
The drivers dont show any sign of roughness and are smooth in action so i dont think they are the issue.
Anyway, the crossover (picture attached) has 1x ALCAP 10uf 50v capacitor, 1x ALCAP 5uf 50v Capacitor and a 10w 2 ohm resistor.
The resistor is proving difficult to get with the correct values unless i get one shipped in by rickshaw from China, which will probably be of questionable quality.
I can get 1.8 Ohm 10w, 2.2 Ohm 10v and 2.2 Ohm 20W, but not 2 Ohm 10w.
Would using a resistor of a slightly different value cause any problems.
I have been looking at Monacor caps and resistors, are these any good or should i be looking at something else. All advice would be appreciated.
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For this kind of upgrade (low cost, high value) I recommend Mundorf MKP or Clarity ESA (currently on sale in several places). All will exceed your V requirements. MKP is a little smaller, so may be best if space is tight. No experience with Monacor. I usually use Mills power resistors.
I beg to differ. I recommend new bipolar electrolytic capacitors. MKP often changes the original sound of the loudspeaker.
With the utmost respect, symptoms point WAY more to 50/60 y.o. ears than to 30 y.o. components.
Sorry.
Measuring voltage at speaker terminals ***might*** show a less han 1dB loss compared to new ones, while Audiometry will easily show 10dB or more loss at higher frequencies.
I managed to get hold of a set of ALCAP capacitors exactly the same as the ones already installed in the crossover so the speakers should sound the same as they were when they came out of Mordaunt Shorts factory.
As for the resistor i purchased a pair of Monacor resistors with the same values as the original so hopefully when they arrive i can get them soldered in and get the crossovers back in the enclosures.
Hopefully this fix should get them sounding how they were when they came off production 😀
As for the resistor i purchased a pair of Monacor resistors with the same values as the original so hopefully when they arrive i can get them soldered in and get the crossovers back in the enclosures.
Hopefully this fix should get them sounding how they were when they came off production 😀
I repaced the caps and the resistors on the crossover and to be honest i cannot get over how much better these speakers now sound to what they were before. They definately have more definition and sharpness.
I ended up having to use some JPW 10µF 50v caps, ALCAP 5µF 50v caps and Monacor 2.2 Ohm 10w resistors, although i do intend to replace the JPW caps as and when i can get some 10µF ALCAP ones.
Next thing on the list is to replace the speaker cables 😀
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