Instruction/ maintenance manual of the product 412 Lexicon
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User Guide Models 212, 312, 412, 225 and 501 Lexicon NT Series Amplifiers.
Unpa cking and Inspection After unpacking the amplifier, save all packing materials i n case you ever need to ship the unit. Thoroughly inspect the amplifier an d packing materials for signs of d amage. Repo rt any sh ipment damage to the carrier a t once; report equipment malfunction to your d ealer.
Dansk Vigtig information om sikkerhed Gem d enne vejledning til senere brug. Følg alle anvisn inger og advarsler på apparatet. Apparat et ska l altid tilsl u tte s den korr e kte spænding. De r henvises til brug sanvisni n gen, der indeholder specifikationer for strømforsyning.
Die ses Dreieck auf I hrem Apparat bedeutet daß wichtige Betriebs- und Wartungsanweisungen in der mitgelieferten Dokumentation zu finden sind. Die ses Drei eck auf Ihrem Apparat warnt Sie vo r nicht-isolierter, ge fä hr l i c he r S p a nn un g i m Ge hä u s e .
Content s Introduction Overvi ew .......................................................... .......................... 1 Models 212 and 225.................................................................................. 2 Model 312 .................
1 Lexicon N T Series Amplifier s Int r oduction Congratulations on your purchase of a Lexicon amplifier. Your amplifier has been designed and manufactured for absolute linearity and stability.
2 Lexicon N T Seri es Amplifiers Overview Models 212 and 225 The 212 stereo amplifier consists of 2 amplifier modules, each with its own power supply. The channels may be operated independently (1=left; 2=right) for stereo at 120 watts/channel @ 8 Ω , 200 watts @ 4 Ω , or bridged (monaural) to form a single 400 watt amplifier into 8 Ω .
3 Lexicon N T Series Amplifier s Model 412 The 412 power amplifier consists of 4 independent amplifier modules, each with its own + 55V power supply, and 4 custom power transistors for a total of 16 output devices.
4 Lexicon N T Seri es Amplifiers Installation Selecting the appropriate installation location for your amplifier is perhaps the single most important factor in ensuring a long trouble-free service life. Al- though the amplifier is very conservatively designed, you must provide some airflow around the unit.
5 Lexicon N T Series Amplifier s Lexicon amplifiers do not require any specialized line conditioners, as they have special power supply circuitry designed to reject power line problems like line spikes, surges and RFI. Simply plug each amplifier directly into a line socket.
6 Lexicon N T Seri es Amplifiers Operation Front Panel LEDs All amplifiers in the Lexicon NT Series are equipped with sophisticated com- parator circuits which detect sources of signal distortion including clipping, excessive DC or supersonic signals, and short circuits in the cabling.
7 Lexicon N T Series Amplifier s Bridged Operation Wire multiple amplifier triggers in parallel. Common “zip cord” wire is adequate. (If you find that using audiophile cable for the trigger signal sounds better, feel free to use it, just don’t tell anyone else.
8 Lexicon N T Seri es Amplifiers Specifications Models 212,312,412 120 Watts per channel @ 8 Ω , 200 watts @ 4 Ω Bridging channels yields 400 Watts @ 8 Ω Model 225 250 Watts per channel @ 8 Ω , 400 Watts @ 4 Ω Bridging channels yields 800 Watts @ 8 Ω Model 501 500 Watts @ 8 Ω , 800 Watts @ 4 Ω S/N >110dB IM + THD <0.
Lexicon Part # 070-11325 Lexicon Inc. 3 Oak Par k Bedford, MA 01730 Tel 781-280-0 300 Fax 781-280-0490 www.lexicon.com Printed in Canada.
An important point after buying a device Lexicon 412 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Lexicon 412 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Lexicon 412 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Lexicon 412 you will learn all the available features of the product, as well as information on its operation. The information that you get Lexicon 412 will certainly help you make a decision on the purchase.
If you already are a holder of Lexicon 412, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Lexicon 412.
However, one of the most important roles played by the user manual is to help in solving problems with Lexicon 412. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Lexicon 412 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
