Primare I22 Service Manual Download Page 10

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Primare AB • Renvägen 1 • SE - 35245 Växjö • Sweden • Tel +46 470 729215 • www.primare.net

REVIEW: I22 INTEGRATED AMPLIFIER AND CD22 CD PLAYER

Manufacturer Specifications

I22 Amplifier

Continuous power :

2 x 80 W/8 Ohms 2 x 160 W/4 Ohms

Bandwidth :

10 Hz - 20 kHz – 0.5 dB

Harmonic distortion :

< 0.05 %

Signal/noise ratio :

95 dB

Number of analog inputs :

4 assymetric Cinch

Number of outputs :

1 fixed recording, 1 variable pre-amp

Optional digital card :

Yes, the modules provided for France are originally
equipped with this card Inputs : 1 x USB/B, 1 x optical
Toslink, 1 coaxial Cinch

Dimensions :

43 x 42 x 10.6 cm

Weight :

10 kg

CD 22

Mechanics :

Asatech 8210, Sanyo block

Converter :

1 x Burr-Brown PCM1792, 24/192 kHz

Analog outputs :

1 assymetric Cinch, 2.1 Vrms

Output impedance :

100 Ohms

Digital outputs :

1 x S/PDIF coaxial Cinch; 1 x optical TosLink

Frequency response :

20Hz – 20 kHz (+0/-0.5dB)

S/N ratio (20Hz – 20kHz linear) :

-100dB

Total harmonic distortion
plus noise (20Hz – 20kHz) :

<0.01%

Other inputs :

USB; RS232; Trigger in/out 3.5mm

Dimensions :

430 x 375 x 106 mm

Weight :

10.5 kg

Colour :

Black or Titanium

Summary of Contents for I22

Page 1: ...of digital and analogue technologies created to process and amplify music from the CD or on line sources The result is sound with a sense of rhythm accuracy of timbre pitch and the holographic spatial positioning of performers REVIEW I22 INTEGRATED AMPLIFIER AND CD22 CD PLAYER MAGAZINE STEREO PRESTIGE IMAGE FRANCE TRANSLATION FROM SEPTEMBER 2011 ISSUE AUTHOR P VERCHER J VALLIENNE IMAGE PRESTIGE ...

Page 2: ...in its ability to retain bass quality and speed The remarkable CD22 player was auditioned while making many comparisons between the various sampling frequencies it offers The conclusions will go against many preconceived ideas In general the 44 1 kHz frequency appears to offer the best spatial coherence with robust well structured timbres The higher the oversampling frequency the more micro inform...

Page 3: ...rect and reflected sounds the effect of the nave of the Cathedral of Dresden can easily be detected With the Sersé excerpt from Max Emmanuel Cencic the Primare CD22 I22 system restores the voice of the counter tenor exhibiting a warm uncompressed and very natural evolution from low midrange to treble Unlike many Class D switching amplifiers the I22 does not react abruptly to strong level differenc...

Page 4: ...n transcribe with such intensity and such transient speed the quality of low frequencies while retaining perfect control of the bass drivers in low output speakers as well as those with higher output The voice of Michel Jonasz remains as a warmer more convincing entity devoid of nasal intonation No wheezing or explosive passages are accentuated Intelligibility is not disrupted by the effects of in...

Page 5: ...sensitivity nominal output power 320 mV S N ratio at nominal power 103 dBA produced S N ratio for 1 W output 83 dBA produced Square signal distortion 1 kHz 0 No trace of distortion measured in our conditions at 83 W Spectrum of distortion at 1 dB Square signal at 40 Hz Excellent result Light filtering against the continuous very low distortion and non existent at 1 kHz No spectrum of distortion du...

Page 6: ... playback Holding it controls the opening closing of the tray 5 Multi function display track number elapsed time remaining time etc CD Rear View 1 Asymmetric Cinch analog outputs 2 Cinch coaxial digital output 3 TosLink optical digital output 4 Trigger input and output switch on and remote control 5 USB A input connection with a USB key or hard drive for example 6 RS 232 port connection to a home ...

Page 7: ...ding a buffer level of 5 seconds The data from the player or the USB are stored in memory and then extracted at a hyper regular rate with an ultra precise clock circuit This fully asynchronous mode of operation largely eliminates the jitter and compensates for possible playback defects associated with shock lack of data from the block after a shock 09 TMP92 32 bit microcontroller with USB interfac...

Page 8: ...22 INTEGRATED AMPLIFIER AND CD22 CD PLAYER Technology By Image View of the optional DAC card 1 USB interface TAS 1020 24 bit 96 kHz 2 AK4113 24 bits 192 kHz digital receiver 3 SRC Analog Devices AD1895 24 192 kHz frequency conversion circuit 4 Burr Brown PCM 1792 24 192 kHz digital analogue converter ...

Page 9: ...hing by relay 04 Buffer levels by op amplifiers 05 National Semi Conductor LM 1972 volume control circuit switched resistance microphones 06 74HC595D circuit register asynchronous with a clock that syncs the conversion stage of the PWM signal with the output stages in class D 07 LVC 244 circuit buffer driver 08 Power stage card in class D for switching The digital signal feeds each channel s MosFe...

Page 10: ... card Yes the modules provided for France are originally equipped with this card Inputs 1 x USB B 1 x optical Toslink 1 coaxial Cinch Dimensions 43 x 42 x 10 6 cm Weight 10 kg CD 22 Mechanics Asatech 8210 Sanyo block Converter 1 x Burr Brown PCM1792 24 192 kHz Analog outputs 1 assymetric Cinch 2 1 Vrms Output impedance 100 Ohms Digital outputs 1 x S PDIF coaxial Cinch 1 x optical TosLink Frequency...

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