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Jensen 10k611m

This document provides specifications for the JT-10K61-1M line output transformer, which is designed for high performance vacuum tube output stages. The transformer has a 4:1 turns ratio configuration with split secondaries that can be connected in series or parallel. Key specifications include less than 0.007% typical distortion at 20Hz and +4dBu output, bandwidth from 0.04Hz to 60kHz, and an ability to drive 600 ohm loads up to +23dBu at 20Hz. It is intended to drive signals free of DC with a source impedance under 1kohms and presents an 11kohm load to the driver circuitry.

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229 views2 pages

Jensen 10k611m

This document provides specifications for the JT-10K61-1M line output transformer, which is designed for high performance vacuum tube output stages. The transformer has a 4:1 turns ratio configuration with split secondaries that can be connected in series or parallel. Key specifications include less than 0.007% typical distortion at 20Hz and +4dBu output, bandwidth from 0.04Hz to 60kHz, and an ability to drive 600 ohm loads up to +23dBu at 20Hz. It is intended to drive signals free of DC with a source impedance under 1kohms and presents an 11kohm load to the driver circuitry.

Uploaded by

roger marq
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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JT-10K61-1M

4:1 CONFIGURATION

LINE OUTPUT TRANSFORMER


4:1 CT or 8:1 with FARADAY SHIELD

M Distortion 0.007% typ at 20 Hz and +4 dBu output level


M Wide bandwidth: !3 dB at 0.04 Hz and 60 kHz
M Drives 600 S loads to levels up to +23 dBu at 20 Hz
M Excellent time domain performance: DLP 0.2EE typ 20 Hz to 20kHz
M Appears as 11 kSS load to vacuum tube driver circuitry

This transformer is designed for very high performance vacuum tube line output
stages. Driving signals should be free of DC and source impedance under 1 kS.
The split secondaries may be series connected for 4:1 with center-tap, or
paralleled for 8:1 operation. A fully enclosed channel frame is standard.

TYPICAL APPLICATION
JT-10K61-1M SPECIFICATIONS (4:1 series secondaries configuration, all levels are output unless noted)
PARAMETER CONDITIONS MINIMUM TYPICAL MAXIMUM
Input impedance, Zi 1 kHz, 0 dBu, test circuit 3 10.0 kS 11.5 kS 13.0 kS
Voltage gain 1 kHz, 0 dBu, test circuit 1 !13.8 dB !13.4 dB !13.0 dB
Magnitude response, 20 Hz, 0 dBu, test circuit 1, Rs=50 S !0.1 dB !0.01 dB 0.0 dB
ref 1 kHz 20 kHz, 0 dBu, test circuit 1, Rs=50 S !0.5 dB !0.37 dB 0.0 dB
Deviation from linear phase (DLP) 20 Hz to 20 kHz, 0 dBu, test circuit 1, Rs=50 S +0.2/!0.1E ±2.0E
1 kHz, +4 dBu, test circuit 1, Rs=50 S <0.001%
20 Hz, +4 dBu, test circuit 1, Rs=50 S 0.008% 0.05%
Distortion (THD)
1 kHz, +4 dBu, test circuit 1, Rs=600 S <0.001%
20 Hz, +4 dBu, test circuit 1, Rs=600 S 0.020%
Maximum output level 20 Hz, 1% THD, test circuit 1, Rs=50 S +21 dBu +23 dBu
60 Hz, test circuit 2 114 dB
Common-mode rejection ratio (CMRR)
3 kHz, test circuit 2 70 dB 80 dB
Output impedance, Zo 1 kHz, test circuit 4, Rs=50 S 133 S
primary (GRN to BLU) 740 S
DC resistance
secondaries in series (ORG to RED) 42 S
primary to shield and case, 1 kHz 300 pF
Capacitance
both secondaries to shield and case, 1 kHz 300 pF
Turns ratio secondaries in series 4.070:1 4.082:1 4.095:1
Temperature range operation or storage 0E C 70E C
Breakdown voltage primary or secondary to shield and case, 60 Hz,
250 V RMS
(see IMPORTANT NOTE below) 1 minute test duration

All minimum and maximum specifications are guaranteed. Unless noted otherwise, all specifications apply at 25EC. Specifications subject to change
without notice. All information herein is believed to be accurate and reliable, however no responsibility is assumed for its use nor for any infringements of
patents which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Jensen Transformers, Inc.
IMPORTANT NOTE: This device is NOT intended for use in life support systems or any application where its failure could cause injury or death. The
breakdown voltage specification is intended to insure integrity of internal insulation systems; continuous operation at these voltages is NOT recommended.
Consult our applications engineering department if you have special requirements.

JENSEN TRANSFORMERS, INC., 7135 Hayvenhurst Avenue, Van Nuys, CA 91406-3807, USA
9/01 (818) 374-5857 • FAX (818) 374-5856 • www.jensen-transformers.com

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