background image

SPECIFICATIONS 

Vacuum tube compliment:

 6922 x 2 (gain) plus 5687 (or 7044) x 4 (output buffers) 

Fuse type and ratings: 

 

 

100-120 VAC:  

1.5 Amp MDL slow-blow main 

230-240 VAC:  

0.75 Amp MDL slow-blow main 

Moving Magnet input impedance:

 

5-step

 

user adjustable via 

fi

 xed low-noise resistors. 

25, 50, 100, 200 and 47000 Ohms. 

Moving Coil input impedance:

 

5-step

 

user adjustable via multi-tap autoformer: 

25, 50, 100, 200 and 400 Ohms. 

Input Termination Capacitance:

 

Variable in 10 picofarad steps from 10 to 1100 pF. 
(1.1 nF). Residual input capacitance less than 40 pF. 

Gain Steps: 

4-step user adjustable, 50, 55, 60 and 65 dB active gain at 1 kHz referred to FIXED 

output jack, 10 k-Ohm load. Additional gain available via MC step-up autoformer. 

Deviation from RIAA curve: 

Less than +0.5 / -0.3 dB from 20 Hz to 20 kHz, any gain setting. 

Typically less than +/- 1 dB from 10 Hz to 100 kHz 

Inter-channel differential phase: 

Less than 4 degrees from 20 Hz to 20 kHz, any gain setting. 

Typically less than 2 degrees. 

Inter-channel differential gain: 

Less than +/- 0.5 dB from 20 Hz to 20 kHz, any gain setting. 

Dynamic Range:

 

 

101 dB @ 1 kHz, 1% THD 

200 Ohm source, 47 k-Ohm input, @55dB Gain 

             97 dB @ 1 kHz, 0.1% THD 

THD: 

                                                0.0042% at 1V output @ 1kHz

REMORA RF REMOTE:  

            controls motorized volume control functions, uses 9v battery

Maximum LINE input level:

         +30.6dBu @ 1kHz for an output of +29.3dBu @ 0.07% THD

                                                          26.5Vrms @ 1kHz for an output of 22.8Vrms @ 0.07% THD

Maximum Output:             

            +27dBm @ 1kHz with 3% THD into 100k-Ohm load 

FIXed Output impedance:             

150 Ohms. Minimum suggested load greater than 1500 

Ohms. 

VARIable Output impedance:

 

75 Ohms. Minimum suggested load greater than 600 Ohms. 

                                                               GAIN setting    Fixed Output               Vari O/P           
MM Noise (S+N+D) / (N+D):

 

50 dB: 

86 dB            108dB   99dB   86dB 

200 Ohm source, 47 k-Ohm input 

55 dB: 

84 dB            108dB   99dB   85dB 

A-weighted Referred to 2.54 mV 

60 dB:             80 dB            108dB   94dB   80dB 

rms @ 1 kHz 

65 dB:             75 dB            108dB   89dB   75dB 

 9:00   12:00  V/C FULL 

MC Noise (S+N+D) / (N+D):

 

50 dB: 

84 dB            108dB   98dB   85dB 

100 Ohm source, 100 Ohm input 

55 dB: 

80 dB            108dB   95dB   81dB 

A-weighted Referred to 0.5 mV 

60 dB:             75 dB            108dB   90dB   76dB 

RMS @ 1kHz and rated input Z 

60 dB:             70 dB            107dB   85dB   71dB

19

Summary of Contents for STEELHEAD RC

Page 1: ...MANLEY STEELHEAD RC MM MC GRAMOPHONE CARTRIDGE PREAMPLIFIER OWNER S MANUAL MANLEY LABORATORIES INC 13880 MAGNOLIA AVE CHINO CA 91710 USA TEL 1 909 627 4256 FAX 1 909 628 2482 www manley com...

Page 2: ...NTENTS SECTION PAGE INTRODUCTION 3 INSTALLATION PRECAUTIONS 4 FEATURES AND APPLICATIONS 5 OPERATIONAL NOTES 9 REMORA REMOTE CONTROL OPERATING INSTRUCTIONS 12 TROUBLESHOOTING 16 MAINS CONNECTIONS 18 SP...

Page 3: ...bility UNPACKING Unpack the preamplifier carefully and make sure that all supplied accessories are present Examine all items for any possibility of shipping damage All six tubes should be standing at...

Page 4: ...ipment If however the preamp provenance is unknown then the mains voltage selector switch should be checked and reset to the correct voltage if necessary The mains fuses must also be checked for prope...

Page 5: ...en ignored causes most phono stages to continue rolling off the highest octave signals coming from the phono pickup rather than turning the final corner and shelving to flat response at about 50 kHz C...

Page 6: ...is instance a technically wrong setting is completely harmless for all equipment involved In the case of the MM input the typically higher cartridge output levels allow fixed resistor termina tion wit...

Page 7: ...rs from the car tridge manufacturer s specs 5 SWITCH SELECTABLE AMPLIFIER GAIN Cartridge output levels and downstream line level interconnect drive voltage requirements can vary greatly between manufa...

Page 8: ...o the STEELHEAD s VARIable output jacks 9 SEPARATE BUFFERED FIXED AND VARIABLE OUTPUTS Choice of constant level source for interconnection to a line level only pre amp or recorder and variable outputs...

Page 9: ...then attach the grounded IEC power cable jack to the IEC plug Keep the power off until all other system connections are completed Proceed by connecting the input and output cabling to the signal sour...

Page 10: ...ar make sure the mains power is off and mains cords are unplugged Then unplug the power supply from the preamp If the preamp has been powered up within the last 15 minutes stop and let the large inter...

Page 11: ...mas tree lights in the attic no Be careful to straighten any bent tube pins prior to installation pin misalignment will make fitting the replacement tube difficult or impossible and may damage the soc...

Page 12: ...GREEN while the transmitter is active As the battery voltage wanes the green light may flash RED briefly when the transmitter is switched on that s when the load on the battery is heaviest When the b...

Page 13: ...assive volume control offers highest headroom option over silicon based devices Precautions when using the Remora Remote system Use only fresh alkaline 9 volt 006P batteries in the remote transmitter...

Page 14: ...of another Remora enabled Manley preamplifier that may be nearby in range of the transmitter If necessary you may alter the specific short user number of the transmitter When you do so the receiver ca...

Page 15: ...e Steelhead s receiver decoder is configured to be in programming mode looking for any new user number changes If the decoder detects the new user number programming string from an armed remote during...

Page 16: ...Replace with correct fuse Bad or unplugged Check cables and outlets power cable AC outlet not energized Rolling Grayout Abandon California elect Libertarians Power supply pilot ON HEAD not responding...

Page 17: ...uts install shorting plugs Replace jumper if necessary Establish inter chassis connec tion Check lead head shell continuity Check for proper connection Keep source lines away from transformers motors...

Page 18: ...quipment WEEE Information for customers The European Parliament and the Council of the European Union have issued the Waste Electrical and Electronic Equipment Directive The purpose of the Direc tive...

Page 19: ...Typically less than 2 degrees Inter channel differential gain Less than 0 5 dB from 20 Hz to 20 kHz any gain setting Dynamic Range 101 dB 1 kHz 1 THD 200 Ohm source 47 k Ohm input 55dB Gain 97 dB 1 k...

Reviews: