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Genesis Genesis 2.2 Junior, Руководство пользователя и инструкция по установке

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Genesis Genesis 2.2 Junior Скачать руководство пользователя страница 22

 

 

Ver 1.0 Sep 2011

 

18

 

a bs o l u t e  f i d e l i t y

®

 

Thus, the servo-drive reduces distortion and improves transient 
response by making the woofer appear to be massless. Typical 
non-servo woofer systems have distortion levels that exceed 10% 
at even moderate levels. The Genesis servo bass system reduces 
this distortion to below one percent at almost any output level. The 
system also drives the woofer to constant acceleration, which 
makes the frequency response of the woofer anechoically flat to 
the lowest frequencies. 

The Servo-controlled Woofers 

The transducer used in a servo system must be strong enough to 
withstand the high current approach of the servo, and yet delicate 
and light enough to react extremely quickly. The G2

jr

 features two 

side-firing 12-inch woofers per channel. 

While the servo system is able to ensure that the driver works 
linearly as a perfect piston, it is unable to correct for distortion 
caused by cone wobble, bending, and break-up. Hence, the drivers 
were designed to minimize these non-linear distortions.  

The woofers are a uniquely designed metal cone driver made for 
the Genesis servo system. Made with a cone of solid aluminium, 
the suspension and voicecoil have been maximized for long 
distortion-free excursion so as to increase dynamic range. Our 
aluminium cones are a magnitude stiffer than any plastic cone on 
the market, and virtually eliminate the problems caused by cone 
bending and break-up. 

The lowest break-up mode in the woofer (where there can be any 
chance of distortion at all) is at 4,000Hz 

– far above the 16Hz to 

120Hz frequency range that these drivers operate at. Therefore, 
the driver is a perfect piston within the frequencies used. Thus, 
extremely low cone break-up distortion is inherent in the driver that 
is designed for the Genesis servo-bass system. 

A pair of matched woofers is horizontally mounted on a cabinet that 
is de-coupled from the rest of the structure of the loudspeaker. This 
ensures that any vibration generated by the woofers are not 
transmitted to the midrange and tweeters. The woofers are also 
horizontally opposed and in phase with one another. This means 
that the vibrations generated by one woofer cancels out the 
vibrations generated by the other woofer 

– further reducing any 

image-distorting vibrations in the loudspeaker. 

Содержание Genesis 2.2 Junior

Страница 1: ...2jr...

Страница 2: ...MIDRANGE AND TWEETER CONTROLS 5 BEGIN WITH BASS TUNING 5 IMAGING AND SOUNDSTAGE 7 THE REFINEMENT STAGE 9 MAKE ONE CHANGE AT A TIME 9 DEFINING THE SOUNDSTAGE 10 APPROPRIATE MID BASS LOW BASS BALANCE 10...

Страница 3: ...ing levels If you are looking for just LOUD this is the wrong loudspeaker A Ferrari and a Caterpillar may have the same price and horsepower but they are very different vehicles and you wouldn t use y...

Страница 4: ...dspeakers is only for 90 days unless the Extended Registration Card is sent directly to Genesis Please write the purchase details of your Genesis 2 2 Junior here for future reference Remember send in...

Страница 5: ...ntegration of the drivers Since the loudspeakers themselves are 28 inches 0 7m deep the room has to have a minimum length of about 18 feet 5 5m to allow for some space behind the head of the listener...

Страница 6: ...e After unpacking we strongly suggest that the crates be dismantled flattened and safely stored away in a cool dry place It is expensive to custom build crates strong enough to transport these loudspe...

Страница 7: ...ack of the G2jr These are labelled BASS GAIN LOW PASS TWEETER and MIDRANGE Set them initially pointing straight up the 12 o clock position This is the nominal flat position and will work for the major...

Страница 8: ...ut your ribbons The amplifier although it is very efficient also has a thermal cut off to protect against over heating Should the bass amplifiers turn off and the back plate is very hot to the touch t...

Страница 9: ...be turned up Use this control if you need a bit more treble or to increase the apparent space of the soundstage Start with this control at the 12 o clock position The MIDRANGE control on the right sid...

Страница 10: ...could put a distance scale on the BASS GAIN control Once this relationship between BASS GAIN listening position and the room is understood setting the correct bass level should be relatively straightf...

Страница 11: ...one direction If at this point it does not have enough mid bass turn the low pass up to a higher position or alternately position the speakers closer together in order to achieve better lower midrange...

Страница 12: ...speakers much beyond 1 3 of the way into the room it is unlikely that pulling them further away is reasonable Too much absorption on the wall behind the speakers will also result in less depth in the...

Страница 13: ...s in the depth and width of the soundstage will increase and so will the smoothness of the sound Ultimately it is all about balance You have a number of controls at hand with which to adjust the bass...

Страница 14: ...not achieve what you are trying to do The recordings in the Genesis Loudspeaker Set up Procedure have all been carefully chosen so those will be the fall back recordings to use for system set up Appro...

Страница 15: ...aker s performance This is because large space ambience information is largely in the lowest frequencies The wavelength of a 20Hz soundwave is approximately 52 feet 16m so if you want to recreate the...

Страница 16: ...s undesirable because it is slightly delayed from the original sound This point on the sidewall can be easily determined with the help of a second person and a mirror Sitting in your listening positio...

Страница 17: ...we rely on hundreds and hundreds of hours of critical listening There are changes we can make to the crossover that we can measure but can hardly hear the difference And then there are the changes tha...

Страница 18: ...order for all frequencies of sound from the loudspeaker to reach the listener at exactly the same time a coherent wave front is important not just time alignment of drivers The ideal is either an infi...

Страница 19: ...a point source loudspeaker This is the great advantage that a line source loudspeaker will have over a point source loudspeaker in a large room As a result the change in loudness of the line source i...

Страница 20: ...speed of the best ribbon electrostatic designs without the high distortion and poor dispersion that is typically associated with them The G2jr uses twelve of these tweeters configured as a vertical l...

Страница 21: ...bass system is an easy one to understand It employs an accelerometer as a sensor to constantly monitor the movement of the woofer cone and continuously compares it to the input signal This comparison...

Страница 22: ...niquely designed metal cone driver made for the Genesis servo system Made with a cone of solid aluminium the suspension and voicecoil have been maximized for long distortion free excursion so as to in...

Страница 23: ...ecially designed and tuned Dynamic Power Delivery System DPDS power supplies are used one for each speaker with two channels to deliver balanced dynamics which are critical to bass accuracy This impro...

Страница 24: ...l defeat this system The spike passes all frequencies to the spike cup and then depending on the diameter of the spike cup it passes only frequencies below a particular frequency A copper penny gets d...

Страница 25: ...h Frequency Response 16Hz to 40kHz 3dB Controls Rear Tweeters 1 5 dB Midrange 0 75 dB Bass Gain 12dB 3dB Low Pass 71Hz to 135Hz Input Impedance 4 ohms nominal Sensitivity 91 dB watt 1 meter Amplifier...

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