How can I stop hearing Big Ben clock chimes on my Mac?

They should chime on the quarter hours, but it should be a short chime. Some help in the link, but it probably needs servicing.

https://www.google.com/search?q=Hamilton+mantle+clock+continues+to+chime+each+15+minutes+for+several+minutes

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Source: Wikipedia

The full hour chime is followed by one strike for the number of the hour by Big Ben (E3) (one strike for one o'clock, two strikes for two o'clock, and so on). ... The mechanism then plays two complete sets of five sequences for each complete hour.

Source: PortableFireplace
Learn how to fix a mantel clock that chimes at the wrong hour. This simple fix will repair a clock that chimes at the wrong time. This can commonly occur when your mantel clock is laid down on its back and the timing is offset.

1 Thing You Have to Understand First On most clocks you can turn the minute hand counter-clockwise but SOME clocks are not safe to be turned in that direction. For this reason, it's best to only turn your minute hand clockwise just to be safe.

The Simple Mantel Clock Adjustment The easiest way to adjust a mantel clock chime is to move the hour hand to the hour that the chime is striking. Make sure that the hour hand shaft is not too tight or else it will not turn. Most mantel clock hands are friction held. DO NOT BEND YOUR HOUR HAND, loosen the shaft if it will not turn freely.
Once you have synchronized the hour hand with the hourly chime, adjust the minute hand to set the clock to the correct time by moving it forward (clockwise) around the clock face. Allow the chime to strike at every quarter hour strike.
Mantel clock Chime Adjustment When your mantel clock chimes the wrong number of times, your chime is not synchronized time of the clock. To adjust your mantel clock chime, proceed with the following step:

ADJUSTING THE HOURLY CHIME

1. When your mantel clock chimes, count the number of times it chimes. This is what time your hourly striker is set to.
2. Move the hour hand to the hour indicated by the hourly chime (count the number of gongs at the hour).
3. Reset the time using the minute hand to the correct hour and the chime should adjust along with the clock hands as well.

ADJUSTING THE QUARTER CHIME

On most mantel clocks, you can simple remove the minute hand which is friction fit. You have to apply pressure on the tube and it will loosen. Once removed, re-install the minute hand at the correct time. From there you can rotate the minute hand to reset the time.

Basic assumption... The chimes know what time it is...!!

FORCE NOTHING...!!

From page 10 of owners manual below (MINUTES):

EXAMPLE: Clock chimes at 1:10 but should chime at 1:15.

Step 1: When clock chimes at 1:10 stop the pendulum and record the time of 1:10.

Step 2: Carefully remove the small nut....

(Hour procedure is on the SAME PAGE (10).

WARRANTY INSTRUCTION MANUALS

Simplest way is to remove the minute hand on dial and reseat it at the correct setting I.e one quarter turn .recheck the hour chime is on hour etc.replace glass front.

The next time it chimes multiple times turn the hour hand clockwise until it is pointing at the number of times it gonged. Next take off the dial nut off (make sure to put it in a plastic bag because they can be hard to replace) and turn the minute hand until it chimes signaling 15 minutes after. Now put the minute hand back on pointing to 3 o'clock and replace your dial nut and you are all set.

Fix Clock That Gongs Wrong

The hour hand is a friction fit, so you can probably just remove the clip or cotter holding the minute hand in place, pull off the hour hand and set it back to match the chimes. The minute hand is on a square shaft, so if you are off by a 1/2 or 1/4 hour, you can change its position also (but only in 15-minute increments).

The next time it chimes multiple times turn the hour hand clockwise until it is pointing at the number of times it gonged. Next take off the dial nut off (make sure to put it in a plastic bag because they can be hard to replace) and turn the minute hand until it chimes signaling 15 minutes after. Now put the minute hand back on pointing to 3 o'clock and replace your dial nut and you are all set.

Fix Clock That Gongs Wrong

The Westminster/ Whittington clock means that it has 2 or 3 settings.
1. Silent
2. Westminster Based on the music My redeemer liveth by Handel
3. Whittington
Set the clock onto the westminster setting, this is the easiest. At quarter past the hour it should sound 4 notes. The half past should be 8 notes. Quarter to the hour should be 12 notes and the hour should be 16 notes then the striking of the hour. For example on 8 'O clock you should hear 16 notes then the clock should chime 8 times. Sometimes if the hour is out just gently stop the pendulum, check what hour the clock is striking then without taking the hands off move only the hour hand to the hour. Do not do this with the minute hand.
I hope this helps you! If you are not sure please email me [email protected] I fix these clocks.

yes .
check volume setting.
if you have a manuval volume control try to clean inside of volumecontrol.if ok fine
or
if not ok Replace volume control with same type( new one.).

to turn off hourly chime on the times wr 30m, simply press (in any mode, i just use the regular clock mode) the start/stop button (top right hand button) once (for about half a second).
  if you don't hear anything, you've turned off the hourly chime!  if you hear two short beeps, you've turned on the hourly chime.    turning the chime off/on is cyclic.  if you press once and hear nothing, it's off.  if you press again, you'll hear two beeps and the hourly chime is now on.    a lot of times that button hits my wrist (i wear it on my left hand) by accident, and that's how the chime turns on and off.  i hope this helps someone.