Luxman CU 80 Brochure
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Extracted text from Luxman CU 80 Brochure (Ocr-read)
Page 1
T h e M U - 8 0 , w h i c h c a n c o m p l e t e l y h a n d l i n g t h e 8 i n c h balance/unbalance inputs, is an 8 inch analog power amplifier directly inheriting the tradition of Luxman. Like CU-80, the MU-80 has built itself into a power amplifier through installing the DNF version2.2 circuit of the latest generation and aiming at becoming an amplifier combining strength and transparency. The powerful amplifier circuit, which could give the biggest output (when the 8 channels operate simultaneously) of 100W X 8inch (8 Ω) by equipped with the powerful power resource, could connect BTL=bridge among the neighbouring channels. For example, when the 4 channels were operated, the maximum output could be set up to 300W (when operating simultaneously, 8Ω) each, and the operation of BTL 3inch + normal 2inch could also be set simply. One of the features of MU-80 is its universal design flexibly coping with all kinds of speaker environments.Here we would like to introduce the high-grade pure audio multi-channel that could bring you high-end stereo phonic reproduction in the same dimension. The CU-80, which was built by Luxman by pouring its enthusiasm and heart in sound, is the high-grade control amplifier handling the multi-channel input (2 independent systems) in the biggest size of 8 inch. For operating all the channels under the equivalent conditions while maintaining the high sound quality, the CU-80 has installed the optimized ※LECUA-WM§ through controlling via computer the high purity electronic control attenuator of ※LECUA§ self-developed by Luxman which was built in stereo control amplifier on C-70. It is the confident product for handling the output of all channel balance and which was equipped with analog down mix circuit using for dealing with some supposed varieties of channel environments. Beautiful Sound Contributed by High-Grade Multi-Channel Demonstration of indefatigable driving force CU-80 MULTI-CHANNEL CONTROL AMPLIFIER T e c h n o l o g y C U - 8 0 MU-80 8-CHANNEL POWER AMPLIFIER F o r o p e r a t i n g t h e o r i g i n a l L E C U A ( h i g h p u r i t y electronic control attenuator) installed in C-70f for balanced operation at 8 inch, the weighted matrix type LECUA-WM was newly developed for CU-80 In the position detecting circuit using the exquisite rotary e n c o d e r a n d m i c r o c o m p u t e r c o n t r o l , a l l t h e 8 i n c h audio signals are put under the high-precision control The volume balance of each channel could be finely tuned at 1dB unit (-20 – 0dB) In center channel, rear speaker, etc , when the efficiency and volume feeling of using speaker system are different, the randomly setting up of levels between the channels aiming at coping with the disk record level is the function that the multi-channel-oriented machine hopes for And the LECUA-WM has adopted the design which set the simple signal bass ＊ s sound quality at the top priority under the condition of combining the high sound quality fixed resistors CU-80 was completely free from the gang error which was unavoidable for the conventional type variable resistance ranged from the maximum volume to the minimum volume, and could deliver an error-free and co-existing environment for the reproductions of both stereo and multi-channel High-purity attenuator LECUA-WM was built for volume-tuning C U - 8 0 The level adjustment among the channels which are free from the deterioration of sound quality is available The newly-developed LECUA-WM installed in CU-80 has made the composition of line level amplifiers an easy thing by setting the attenuation value of each channel one by one Till now, for ensuring the setting up of the level of each channel, in the most cases, the method is to set the sub-attenuators at the anterior segment or the posterior segment of master attenuator which could link all the channels in operation In this way, the deterioration of sound quality arising from the increasing of wiring, as well as from the connecting with the series of variable resistors will have nothing to do with CU-80 Because each channel level could be simply operated via the attached remote controller, you can adjust the channel balance from any listening position you are sitting at With successful development of LECUA WM, CU-80 was turned into control amplifier which has installed the simple line amplifier at maximum size of 8inch The secret for significantly raising of multi-channel 's grade lies in LECUA-WM Input Output 10dB step1dB step Weighted Matrix buff Schematic Diagram of LECUA-WM Circuit
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CU-80 F u n c t i o n S e v e r a l s u r r o u n d s o u r c e s c o u l d b e connected simultaneously The inputs of multi-channel are installed in two systems Since the coaxial line level signals from universal player, super audio CD, DVD, surround decoder, AV amplifier ＊s free output, etc could be simultaneously connected to the 2 systems, so the operations could be switched among several multi-channel machines XLR balance connectors are installed in overall output channels For coping with all kinds of power amplifiers, e x c e p t t h e u n b a l a n c e o u t p u t , t h e b a l a n c e outputs (with HOT pin switching function) are installed as standard in all channels So the ideal balance transferring connection which could remove the outside noises is available To t a l l y 4 s y s t e m s s p e c i a l i n p u t a re prepared for 2 inch stereo machine F o r c o n n e c t i n g t h e r e a l 2 - c h a n n e l s p e c i a l machine, the input connectors, 2 groups for each, totaling 4 groups, for balance/unbalance are equipped with It could sufficiently handle the input even for the stereo reproduction Still, one group of connectors was also prepared for the input/output of recorder The output connectors coping with the twin drivers of center and sub-woofers are prepared For forming varieties of patterns for connecting multi-channel, two groups of output connectors are specially prepared for the center channel and sub-woofer channel Thus the availability of speaker layout was increased, as well as a high-grade twin drive environment could be created T h e a n a l o g d o w n m i x f u n c t i o n w i t h attention attached to sound quality The 4 1 inch (6 1inch) reproduction without using the center channel, the 5 0 inch (7 0 inch) reproduction without sub-woofer, or the 4 0 inch (6 0 inch) production without using both the center channel and the sub-woofer are the most available multi-channel structure for the audio file which puts the 2 channel reproduction at the preferred position For perfectly meeting that demand, the CU-80 was equipped with the down mix functions which could independently set up the center and sub-woofer in the analog fi e l d I t c o u l d a l s o r e a l i z e t h e fi n e t u n e o f mixing level by easy-of- use remote controller EX-1 and EX-2 of input/output: option By equipped with 2ch multi-amplifier mode which could supply outputs at most for 4 systems for the special operations for the 2-channel reproduction; and with the 4ch bi-amplifier mode which could provide outputs for the 2 independent systems set in the front and the rear for the 4ch matching system employing the down mix function, and by using the speakers matching with the bi-wiring, the CU-80 could be flexibly and luxuriously used in driving of the bi-amplifiers 4 inch bi-amplifier mode and 2 inch multi-amplifier mode for forming application system The FL display with dimmer function for improving the brightness of listening room By the introduction of the large-scale dot matrix FL tube with four graduations for adjustment, the actions far away could also be recognized clearly The high-grade aluminum-made remote c o n t r o l l e r w h i c h c o u l d o p e r a t e o n a l l functions at hand With the specially designed aluminum-made remote controller with illumination function, you could simply control all kinds of operations of CU-80 at the listening position Display via. dot-matrix FL tube (The switching between ON/OFF could be done via. remote control operation) power indicator Power switch Input selector Volume controller line straight switch Monitor switch Output mode switch Center channel down mix Sub-woofer down mix Line phase sensor Multi-channel input Stereo line input (2 systems) Monitor input connector Record output connector Multi-channel output (coaxial) AC inlet AC output (Synchronism) AC output (Non-synchronism) Single ground (earth) connector Multi-channel input 2 Line input (Balance 2 system)Balance input phase- changing switch Multi-channel output (balance) CU-80 Down mix schematic drawing The down mix center (c) and sub-woofer (SW)s level could be adjusted within the range of -12dB – 0dB. Input output mix mix FR FR FL FR C SW The Output modes other than CU-80 MULTI 4CH mode 2CH mode FL FR C SW SL SR (EX-1) (EX-2) FL FR C SW SL SR (EX-1) (EX-2)FL FR C SW SL SR (EX-1) (EX-2) FL FR C SW SL SR (EX-1) (EX-2) Output Input Output Input