Question about NAD C162 Amplifier
Not really sure what to connect in and out of - when I connected the preamp, music played but only the volume of the preamp worked and when I cranked up the turntable, the volume was low going through the preamp
You must connect the turntable to the plugs on the left side of your amplifier when you are behind the pre amp. You have to know if you are using a MC or a MM element in your turntable and connect to the right plugs. Don't forget to put the switch in the right position (also MC or MM) The moving coil element is giving a very low voltage accordingly to the Moving magnet element. So it needs some extra amplification.
Posted on Nov 12, 2013
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Posted on Jan 02, 2017
To be clear: you have a
You say literally that you have an amp output (Marantz Model ??? amp speaker level) connected to the Pre In of the NAD C272 amp. That won't work well. Smoke? Well, yeah.
Or is this an incorrect assessment of your rig?
If you REALLY have a Pre-Out (or equivalent) coming out of the Marantz to the NAD amp some high-level isolation should precede surgery.
Which unit is faulty?
Plug a CD or other line level output directly into the amp to see if it works, but be ready to pause it immediately as the amp has no volume control so it will be LOUD. Find a CD that has a gradual fade-in to be safer.
If that works move to the Marantz Model ???. Is more than one source behaving this way? Depending on how it's cabled and what other devices are available, you could try other sources (FM is always a good test source) to define the boundaries and likely source of the failure. Without a model number we can't get specific.
Posted on Feb 27, 2010
SOURCE: connecting NAD 2600a amp.
Never connect incompatible connections. Speaker outputs are for speaker inputs. Period.
The various inputs on this or most any amp are for Line Level signal with the exception of anything explicitly labeled "PHONO" as that would be for a non-preamplified turntable ONLY.
From what I have found online, Lab-In was a NAD feature that restored the frequencies that were rolled off when turntables were being used in the (assumed) preamplifier that fed this amp.
"NAD belleived at the time that practical PHONO stages and the preamp and power amplifier stages be rolled off at subsonic frequencies to prevent subsonic wow and flutter from Turntables and supersonic frequencies (EMI/RF/Radio) signals from getting into the system in the first place. Their notion was that if your ears cannot physically hear it, then why amplify it. For the PURIST, there were a set of LAB IN amplifier inputs with more extended response called "LAB IN" inputs"
Use the Lab In's UNLESS you have a turntable source.
Posted on Feb 23, 2011
Generally speaking, an amp attempts to protect itself from heat, shorts, overloads and operator exuberance by refusing to turn on or stay on.
Overloads can be from excessive periods of high output or marginally low impedance loading by the speakers; and shorts would be wiring issues or a speaker blowing up.
You should be able to feel if it's hot. WHY is it overheating? Make sure it has sufficient ventilation on all sides and that vent holes are not blocked by dust balls. Ensure the fan (if equipped) is running as designed (some only operate on demand). Clean dust and debris from it.
If the amp comes back on after cooling, you're lucky. They only have so many self-protection cycles in their lives so continuously resetting or cycling their power without addressing the cause can do more harm than good.
If it protects immediately on a cool power up you should disconnect the speaker connections and try it 'naked'. If it comes up then diagnose which lead(s) are shorted. If it does not come up the problem is internal and should be left to an experienced and competent hands-on tech.
Check for loose speaker connections at the speaker as a root cause for ntermittent shutdown.
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Posted on May 27, 2011
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Jan 04, 2013 | Mitsubishi Da-g108 Stereo Graphic...
You DO realize the preamp is duplicating stuff in the Nad C372, right? This Preamps adds nothing but PHONO connectivity and control. That's why they're called "preamps".
Register and download the manual for free at retrevo.com
Model 2100 Picture and article:
Use the Sub Out pair on the Preamp (joined by an RCA Y-cable) for the Sub Input on the sub (duh):
Run RCA from the Preamp Main Out to the C372 Aux In to hear any sources attached to the preamp.
Or, if you don't NEED the preamp because you don't have a turntable,ditch the preamp and connect the sub using the speaker outputs on the NADS, according to the manual.
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