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Owner’s Manual

Symetrix

SX204

Headphone Amplifier

Symetrix Inc.

14926 35th Avenue West

Lynnwood, Washington 98037

Voice: (206) 787-3222, (800) 288-8855

Fax:

(206) 787-3211

Copyright 1988, 1994 Symetrix Inc.

All rights reserved.

Subject to change without notice.

Batteries not included.

This manual will not play in reverse.

Revision: 2.0, 10/01/94

Part Number: 530104

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Summary of Contents for SX204

Page 1: ... Avenue West Lynnwood Washington 98037 Voice 206 787 3222 800 288 8855 Fax 206 787 3211 Copyright 1988 1994 Symetrix Inc All rights reserved Subject to change without notice Batteries not included This manual will not play in reverse Revision 2 0 10 01 94 Part Number 530104 ...

Page 2: ...TRODUCTION 2 2 USING THE SX204 3 2 1 IMPEDANCE SENSITIVITY LOUDNESS 3 2 2 MAXIMUM AMPLIFIER LOAD 3 3 REAR PANEL 5 4 FRONT PANEL 6 5 BLOCK DIAGRAM 7 6 SPECIFICATIONS 8 7 REPAIR INFORMATION 9 7 1 RETURN AUTHORIZATION 9 7 2 IN WARRANTY REPAIRS 9 7 3 OUT OF WARRANTY REPAIRS 9 8 LIMITED WARRANTY 10 ...

Page 3: ...vel output level for each individual amplifier and a stereo mono switch The STEREO MONO switch allows the amplifier to be used several ways As a normal stereo amplifier with four outputs the left and right inputs are used for stereo signals which feed the left and right outputs Switching to mono with a stereo input provides a quick check of the mono compatibility of a stereo mix As a mono amplifie...

Page 4: ...erter technology allows the SX204 to drive even high impedance head headphones to maximum levels be cause the amplifiers are capable of very high output voltage swing However to get a loudness equivalent to that of low impedance head phones the controls will have to be set much higher with high impedance headphones This is normal If low and high impedance headphones are combined on the same channe...

Page 5: ... 50 ohms or higher For maximum output with all channels driven try to restrict the lowest combined load impedance to 50 ohms per channel Lower impedance loads simply reduce the maximum output possible Note 2 Many headphones are spec d as being suitable for eight ohm outputs They are but this does not mean that their actual impedance is 8 ohms In most cases the actual impedance is substantially hig...

Page 6: ... channel 3 conductor 1 4 jack for line level balanced or unbalanced input signals Tip high Ring low Sleeve ground Maximum input level 18 dBv Input impedance is 30 kilohms Input B Right channel 3 conductor 1 4 jack for line level balanced or unbalanced input signals Tip high Ring low Sleeve ground Maximum input level 18 dBv Input impedance is 30 kilohms INPUT LEFT INPUT RIGHT BALANCED UNBALANCED TH...

Page 7: ...two mono input signals into one mono output signal fed equally to both left and right headphone outputs HEADPHONES 1 4 stereo jacks for headphones The minimum impedance is 8 ohms see Table 2 1 for combined headphone impedances HEADPHONE LEVEL Volume controls set the signal strength at the corresponding output jack 1 4 HEADPHONE LEVEL HEADPHONES SX204 HEADPHONE AMPLIFIER 10 0 10 0 10 0 0 10 STEREO ...

Page 8: ... Rev 2 0 10 01 94 5 Block Diagram ____________________________________________________________ OUTPUT CHANNEL 1 CHANNEL 2 CHANNEL 3 CHANNEL 4 CHANNEL LEVEL MONO STEREO INPUT A INPUT B MASTER VOLUME Rev B ...

Page 9: ...ncy Response 20Hz to 20kHz 0dB 1dB THD 01 1kHz 0dBm 600 ohms 02 1kHz 24dBm 600 ohms Signal to Noise Ratio 95dB Gain 20dB ______________________________________________________________ Outputs Type low Z Output impedance 160 ohms Maximum output level 50 volts p p into 2000 ohms Connectors 1 4 stereo x4 ______________________________________________________________ Power Requirements 16 volts AC 200...

Page 10: ...freight prepaid Our address is printed on the title page of this manual Just do those five things and repairs made in warranty will cost you only the one way freight fee We ll pay the return freight If you don t have the factory packaging materials then do yourself a favor by using an oversize carton wrapping the unit in a plastic bag and surrounding it with bubble wrap Pack the box full of Styrof...

Page 11: ...ISCLAIMS ANY IMPLIED WARRANTIES INCLUDING FITNESS FOR A PARTICULAR PURPOSE OR MERCHANTABILITY SYMETRIX INC S WARRANTY OBLIGATION AND BUYER S REMEDIES HEREUNDER ARE SOLELY AND EXCLUSIVELY AS STATED HEREIN The Symetrix SX204 is designed and manufactured for use in professional and studio audio systems and is not intended for other usage With respect to products purchased by consumers for personal fa...

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