At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
One of the nsm 76m amplifiers is either off or extremely loud, its not the volume control because when controling the other amp its fine and vice versa. any ideas
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
If you have over driven the amp by playing it real loud with the bass control turned up, it is very possible that you have toasted the output stages of amp.
Every time you boost a tone control by 3 db you have doubled the output power at that frequency. So if you are "coasting" along at a nominal 75 watts, the moment you boost the bass by 3 db the amp has to put out 150 watts at that low frequency.. Go to +6db and now the poor amp has to kick out 300 watts! And so on.
Rule of thumb - you never use your tone controls at very loud levels. Tone controls are there to compensate for the poor frequency response of the human ear at low volume levels - the Fletcher Munsen effect. At low volumes our hearing with the lows and high frequencies so when you play something at low volume you boost up the bass and treble to compensate for poor hearing. At loud volumes our ears respond properly.
See there is a problem with the volume conroller as it is 18 years old the controller has worn out replace the volume controller with a new one and you will be able to enjoy great sound again
This is caused by the breakdown of a transistor early in the amplication stages. If it can not be controlled at all by the volume control, that helps to narrow down the suspect transistor(s). This unit will require internal measurements with an oscilloscope to determine the exact source of hte noise. Unless you have access to this type of test equipment, this unit will need to see a servicer. I can try to locate the more probable parts, but I will need to know the exact model and serial number. There are differences in the circuitry depending upon the run/serial number.
That would depend on the preamp. Name it. A true preamp outputs a variable signal.
It's not clear from the manual what the state of the volume output is without the VCA. Most amps default to full ON and the preamp attentuates the signal with a volume control. Try it with a signal that fades in slowly so you can intervene if it gets too loud. If it's full ON a preamp will control its volume.
If you send me your details I will scan my circuit diagram for the 76M amplifier. I do not have the manual but I do have a list of the programing locations.
you probably have a lose connection. check all connections at both ends of the wires. if that dosen't solve the problem there is something wrong with the amp
×