Lundahl Line output transformer, LL1680
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  • Lundahl Line output transformer, LL1680

Lundahl Line output transformer, LL1680

LL1680
125,30 € Без НДС
152.87 € с НДС для покупателей из ЕС
Lundahl Line output transformer, LL1680
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Line Output Transformer for Tube Amplifiers LL1680

The LL1680 line output transformer is made to match or exceed the specs of the UTC transformer LS-27. The LS-27 was used in the RCA Tube Mike Pre (which was used in BC-2B Consoles). For the internal insulation of the LL1680 high impedance sections we have used paper (and not polypropylene foil) to minimize internal capacitance. Each coil consists of three sections to optimize leakage inductance versus interwinding capacitance. The transformer has a special audio C-core of our own production.

Weight: 0.35 Kg

Turns ratio: 9 + 9 : 1 + 1+ 1+ 1
Static resistance, winding 9-11 and 16-14: 580 ?
Static resistance, winding 2-4 and 8-6: 11 ?
Static resistance, winding 1-3 and 7-5: 15 ?

Isolation between primary and secondary windings / between windings and core: 4 kV / 2 kV
Max standing DC current through any primary section 50 mA

Type

LL1680/5mA

LL1680/5mA

LL1680/5mA

LL1680/5mA

Application

15k : 600 ohm
Balanced output

15k : 600 ohm
Unbalanced output

15k : 150 ohm
Balanced output

15k : 150 ohm
Unbalanced output

Connection

Alt A

Alt B

Alt C

Alt D

Primary DC current for 0.9 Tesla

5 mA

5 mA

5 mA

5 mA

Primary Inductance

210H

210H

210H

210H

Frequence response, +0, -1.5dB (ref. 1kHz) Source impedance Load

15 Hz 50 kHz 15kW

600 W

15 Hz 40 kHz 15kW
600 W

15 Hz 55 kHz 15kW
150 W

15 Hz 40 kHz 15kW
150 W

Max primary signal voltage (RMS) at 30 Hz

150V

150V

150V

150V

Max output voltage @ 30 Hz

33V RMS

33V RMS

16V RMS

16V RMS

LL1680
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