Connecting the KAV-250aor KAV-250a/3 Amplifier to Your System
INPUT AND OUTPUT CONNECTIONS
The following steps describe howto connect cables to the KAV-250aor KAV-250a/3 amplifier.
1.Neatly arrangeandorganizethe wiring to andfromthe amplifier andall components.SeparateACwires from audio cables to prevent humor other unwantednoise from being introduced into the system.
21Connectthe loudspeakercables to the KAV-250aamplifier channel output speaker binding posts (7, 8), or the KAV-250a/3amplifier channeloutput speakerbinding posts (22, 23, 24) located on their respective backpanels.
The amplifier channel outputs for the KAV-250aand KAV-250a/3use five-way loudspeakerbinding posts. Theloudspeakerbinding post terminals accept spade lugs, barewire, bananaplugs, or pins. Usethe red terminal for the positive connectionandthe black terminal for the negativeconnection.
3.Connectthe interconnect cables from your output device to the amplifier inputs. The KAV-250ais equippedwith balanced(3, 4) or single-ended(5, 6) inputs and KAV-250a/3is equippedwith balanced(16, 17, 18) or single-ended(19, 20, inputs located on their respective backpanels. Thebalancedinputs use three-pin XLRconnectors; the single-ended inputs use RCAconnectors.
4.Insert the end of the ACpowercord into the IEC powerconnector on the KAV-250a (13) or KAV-250a/3(29) backpanel. Insert the other endinto the ACwall outlet.
Theamplifier is nowreadyfor operation. SeeAmplifier Operation, on page25.
TheKAV-250aor KAV-250a/3amplifier is shippedwith shorting pins in the XLR inputs. Thesepins shouldremainin the XLRinputs if the amplifier is operatingin the single-endedmode.Whenthe shorting pin is inserted, pins 1 and3 are shorted together. Removethe shorting pins to connectthe amplifier for balancedoperation.
TheXLRpin configuration is describedbelow:
Pin 1 | Ground |
Pin 2 | °)Non-inverting(0 |
Pin 3 | °)Inverting (180 |
Krell recommendsusing balancedinterconnect cables. Balancedinterconnect cables not only can minimizesonic loss but are also immuneto inducednoise, especially with installations using long cables. Balancedconnectionshave6 dBmoregain than single- endedconnections.Whenlevel matchingis critical, keepthis gain value in mind.
