LL2.1 LINE LEVEL TUBE PR

LAMM Audio
  • 详细说明
  • 产品参数

TheLL2.1isadirectreplacementfortheLL2preamplifier.TheLL2.1featuresthefollowingupgradesandmodificationsascomparedtotheLL2:

additionofabuilt-inremoteon/offforLAMMamplifiers

introductionoftheattenuationforgainreductionby15dB

somenewparts

newknobs

slightchangesinschematicdiagram

ModelLL2.1isthenextgenerationoftheoriginalLL2whichwasthefirstinthelineofLAMMvacuumtubepreamplifiers.UniquetopologyandapplicationofthemostadvancedtechnologicalresourcesandprocessesbringtheLL2.1veryclosetothethresholdofexcellenceinsoundreproduction.AmaindistinctionoftheLL2.1fromanyothercomparabletypeofpreamplifiersisitsalmostinaudiblesonicsignature.Whenconnectedtoanappropriatetypeofpoweramplifiers,especiallyLAMMamplifiers,itassurestherecreationofathree-dimensionalsoundstagewithoutboundariesandlimitations.

RatedOutputVoltage*

from20Hz-20KHz:


1.0VoltsRMS.

VoltageGain

7.87+2%or17.92+0.2dB.

Attenuation

5.62±10%or15±0.85dB.

FrequencyResponse


from1-30VoltsRMS:


(+0dB)20Hz,20KHz.
(-3dB)1.5Hz,400KHz.

SlewRate


Vout=28.8Voltspeak-to-peakof
square-wavesignal,F=10KHz:


41Voltspermicrosecond

RiseTime


Vout=28.8Voltspeak-to-peakof
square-wavesignal,F=10KHz:


1microsecond

TotalHarmonicDistortionfrom20Hz-20KHz

Vout=2VoltsRMS:
Vout=30VoltsRMS:

nomorethan0.03%
nomorethan1%

IMDistortion
(60Hz:7KHz4:1)SMPTE:

Vout=2VoltsRMS:
Vout=30VoltsRMSintoIHFload:

nomorethan0.03%.
nomorethan1%.

Inputs


Single-ended


goldplatedsingle-endedRCAconnectors.

InputSensitivity*

Vout=1.0VoltsRMS:

0.127VoltsRMS±2%.

InputImpedance

50KOhms+10%.

Outputs

Single-ended

goldplatedsingle-endedRCAconnectors.

CorrectedOutputImpedance

typically250Ohms.

Noise


signal-to-noiseratio,below2VoltsRMSoutput,unweighted

signal-to-noiseratio,below2VoltsRMSoutput,A-weighted



betterthan84dB.


betterthan94dB.

OperatingTemperature

-4to+104degreesFahrenheit
(-20to+40degreesCelsius)ambient.

PowerSupply


nominallinevoltage:

Inputvoltagerange:


100-240Volts,50/60Hz.

±10%.

Onepowertransformer,onefilterchoke,onefull-wavevacuumrectifier,onesolid-stateanalognon-switchingvoltageregulator.

ACvoltageintensivelyfilteredbyspecialRFIpowerlinefilter.

Front/RearPanelControls:

FrontPanelControls:

POWERswitch.

REMOTEswitch.

MUTINGswitch.

LEFTGAINcontrol.

RIGHTGAINcontrol.

ATTENUATOR(-15dB)switch.

SELECTORswitches.

MONITORswitch.

LEDcontrol.

RearPanelConnectorsandControls:

IEC320POWERINLET(3lug).

EARTHINGPOST(goldplated).

REMOTECONTROLplug.

FourpairsofINPUTCONNECTORSRCAforLineandTapeinputs.

ThreepairsofOUTPUTCONNECTORSRCAforTape,Output1,andOutput2.

Features


PureclassAvacuumtubedesign.Allstagesaresingle-ended.

High-currentdrivecapability,incombinationwithuniquesingle-endedclassAcircuitry,guaranteethepreamplifiertodriveanycableandanyreasonablerealworldload,whilemaintainingitspracticallyinaudiblesonicsignature.

ThisdesignisuniquetoLAMMINDUSTRIES,INC.

ACvoltageselector:

100/120/220/230/240Volts,internallyswitchable.


Safety:


Uniqueelectronicprotectioncircuitenablesmutingoftheoutputsuntilthepreamplifierisstabilizedafteraturn-on,aswellasfunctioningofthepreamplifierina"muting"modeduringoperationandautomaticswitchingtomutingincasetheAClinedropsorisinterrupted.

ACvoltagefuses:

1Ampslo-blofor100/120Volts,
0.5Ampsslo-blofor220/230/240Volts

General

PowerConsumption:

Typically40Watts.

Burn-inTimeatFactory:

Minimum72hours.

RecommendedBurn-inTimeinEnd-user'sSystem:

Minimum50hours.

Warm-uptime:

Minimum45minutes.

Unitdimensions
(preamplifierandpowersupplyhavethesamedimensions):

Cratedimensions:

.
4.5incheshighx19incheswidex13.875deep+1.375inchesforfronthandles.

23"x19"x10"(58.42cmx48.26cmx25.4cm)


Unitweight:

Shippingweight:


20Lbs(9.1Kg).

36Lbs(16.3Kg).

TubeComplement:

V101-12AU7A(leftchannel,firstamplificationstage)

V103-6DJ8(leftchannel,secondamplificationstage)

V102-12AU7A(rightchannel,firstamplificationstage)

V104-6DJ8(rightchannel,secondamplificationstage)

V105-6X4/6202(fullwavevoltagerectifier)

额定输出:1.0V RMS(20Hz-20KHz)

电压增益:7.87(+2%)、17.92(+0.2dB)

衰减:5.62(±10%)、15(±0.85dB)

频率响应(1-30V RMS):20Hz-20KHz(+0dB)、1.5Hz-400KHz(-3dB)

转换速率(28.8V方波信号, F=10KHz):41V/ms

上升时间(28.8V方波信号, F=10KHz):1ms

总谐波失真(20Hz-20KHz):≤0.03%(2V RMS)、≤1%(30V RMS)

输入灵敏度:0.127V(RMS ±2%)

输入阻抗:50KOhms(+10%)

噪音:>84dB(不计权)、>94dB(A计权)

耗电:40W

工厂老化时间:最少72小时

接入系统老化:最少50小时

建议热身时间:最少45分钟

体积(HWD):4.5×19×13.875(+1.375)英寸(主机与电源机箱相同)

重量:20Lbs (主机9.1 Kg)、36Lbs(整机16.3Kg)

使用电子管:V101-12AU7A、V103-6DJ8、V102-12AU7A、V104-6DJ8、V105-6X4/6202

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