Owner's Manual

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8 OHMS/CH

4 OHMS/CH

2 OHMS/CH

BRIDGED

225W

350W

500W

700W

1000W

120VAC 60Hz

1200VA INTERNAL FUSE

BRIDGE LIMITER

TIP - SIGNAL +

RING - SIGNAL –

SLEEVE - GND

TRS BALANCED

14. LINE OUT AMP 1&2 JACKS (LOW FREQ & HIGH FREQ)

The LINE OUT AMP jacks receive the same signals that drive the internal power amps. These

jacks are TRS (Tip-Ring-Sleeve) for balanced or unbalanced connections. Using a standard instru-

ment cable or TRS (Tip-Ring-Sleeve) cable, the amp signal can be sent to the external power

amp(s). Use the front AMP1 & AMP2 controls for level adjustments. When the X-OVER switch

is set to “IN”, AMP1 receives the low frequency signals and AMP2 receives the high frequency

signals as set by the front panel crossover.

15. SPEAKER OUTPUTS

The KB1000 amp contains four 1/4” jacks (2 per amp), 2 sets of BINDING POSTS (1 per amp),

and two SPEAKON™ speaker output connectors, (1 per amp). The third SPEAKON™ is for

BRIDGE setup only. The AMP 1 (LOW FREQ) outputs correspond to the AMP 1 (LOW FREQ)

knob and the AMP 2 (HIGH FREQ) outputs correspond to the AMP 2 (HIGH FREQ) knob on

the front panel. Multiple speakers can be attached to either the 1/4” or SPEAKON™ jacks so

long as the total impedance is not below 2 ohms per amp.

16. BRIDGE SPEAKER OUTPUTS

The KB1000 produces 1000 watts (bridged mono) into a 4Ω load or 700 watts into an 8Ω load.

To activate, push the rear recessed BRIDGE switch “IN” with a pencil and set the front BI-AMP

switch to the “OUT” position. In BRIDGE mode, the AMP 2R knob is not effective. Plug the

speakers into the BRIDGE ONLY-SPEAKON™ jack or connect across the inner two RED BIND-

ING POSTS. Pins 1+ and 1- are used on the Speakon™ connector. The minimum total imped-

ance is 4 ohms.

17. INTERNAL FUSE

If there are high AC voltage surges or if the amp is used with excessive loads, the internal fuse

will protect your amp from damage. If the fuse fails, use the proper replacement fuse:

120 VAC models use a 25 AMP 250VAC slow blow.

240 VAC models use a 15 AMP 250 VAC slow blow.

18. AC LINE CORD

All KB1000 amplifiers are supplied with detachable three conductor AC line cords. Make sure

the cord is securely inserted into the back of the unit. Never defeat the ground of the AC line

cord as it is there for your protection. If you must plug into a two prong outlet, use a quality

3 to 2 prong grounded adapter and properly ground it.

SPEAKER CONNECTIONS

SPEAKON™ cables are recommended for your system because of their high current capac-

ity. While the standard 16 GA 1/4” cables will work OK with your system, the CARVIN 12

GA SPEAKON™ cables will allow you to gain as much as 20% more power at high power

levels extracting every watt from your KB1000 amp. The very short 1/4” cables will work fine

for the KB1010 and KB1015 combo amps.

FULL RANGE MODE:

The FULL RANGE MODE of your KB1000 amp works well with separate bass and full-range

speaker systems. Instead of using the BI-AMP mode, you can simply run AMP 1 into your

bass speakers and AMP 2 into your full-range speakers using the natural crossover frequencies

of each speaker system. If you need deeper bass or more highs, just turn up amp 1 or amp

2 for a balanced sound. Set the front panel X-OVER switch to the “OUT” position, and the

MONO switch to the “IN” position for FULL-RANGE MODE. If using only ONE speaker, as

with the KB1015 combo, turn the unused POWER AMP control to “0”.

BI-AMP MODE:

To BI-AMP your speakers, connect your BASS speaker(s) into AMP 1 and your FULL-RANGE

speaker(s) into AMP 2. Set the front panel X-OVER switch to the “IN” position for BI-AMPING.

Try setting the X-OVER FREQ control to 800 Hz, this is a common crossover point for many

speaker systems. Now adjust the AMP 1L and AMP 2R power amp controls to get a bal-

HELPFUL HINTS

1) POOR BIAMP SOUND: The speaker cables from AMP 1 (woofers) and AMP 2 (1” tita-

nium hf drivers) have been reversed, AMP 1 and 2 level controls are not balanced or the X-

OVER has been set at an incorrect frequency. (start at 800 Hz). WARNING: Incorrect BIAMP

connections may damage mid/high frequency drivers.

2) NO SOUND FROM AMPS 1 & 2: The rear BRIDGE switch has been inadvertently pushed

in, or speakers plugged into wrong jacks.

3) NO HIGH FREQUENCIES: 1” Titanium HF Drivers have been damaged from to much power

or low frequencies. Be sure to make the correct speaker connections when BIAMPING.

4) WEAK BASS: The speaker systems are wired out of phase to each other. To correct,

reverse the wires on one speaker connector.

5) DIRECT OUT XLR HUM: Try switching the GND LIFT switch IN or OUT. If the hum is not

eliminated, use Carvin’s MTF55 ground lift adaptor which cuts the input ground on the con-

nectors.

6) KEYBOARD PATCHES SOUND “HOLLOW” or HAVE LOW VOLUME:

Try disconnecting one of the stereo inputs from the keyboard. Some keyboard or effects

settings depend on stereo imaging to get their full-sound. This commonly means putting

the left and right signals out-of-phase. If these out-of-phase signals are mixed in either the

MONO or BIAMP MODES, cancellation of signal will occur. Panning or “leslie” effects within

a patch may cause similar results.

7) HEADPHONE VOLUME IS TOO LOW OR YOU NEED TO SHUT OFF SPEAKERS:

Turn down the POWER AMP 1 &2 controls and increase the MAIN level control.

anced sound. If you have the KB1015 combo and you are in the BI-AMP MODE. Be sure

the LOW FREQ INPUT is plugged into AMP 1 and the HI FREQ INPUT is plugged into AMP 2.

STEREO MODE:

The STEREO mode of your KB1000 amp takes advantage of the lush stereo imaging avail-

able from modern keyboards. Simply run AMP 1 into your main speaker and AMP 2 into an

extension speaker. The front panel MONO and X-OVER switches must be left in the “OUT”

position for STEREO MODE.

BRIDGE MODE:

To get high output from your KB1000 amp with two 8 ohm speakers or one 4 ohm speaker,

use the BRIDGE MODE. Set the front panel X-OVER switch to the “OUT” position. On the

rear of the amp, push the BRIDGE switch “IN”. In BRIDGE mode, the AMP 2R control is not

used, use only the AMP 1L control. Plug one SPEAKON™ cable into the rear amp BRIDGE

ONLY connector and daisy-chain another Speakon™ from speaker to speaker. Two 8 ohm

speakers will give you a total impedance of 4 ohms, which is the maximum power from your

amp. If you use two 4 ohms speakers on the BRIDGE output, your amp will shut off and go

into the “protect” mode. To reset, turn your amp off and connect only two 8 ohm speakers

(or one 4 ohm) speaker to your amp when you are in BRIDGE MODE.

FOR MAXIMUM OUTPUT:

To get your loudest output, use multiple speakers or enclosures. Every time you double your

speakers, your acoustic output goes up by a factor of four. Load the amplifier down to its

lowest minimum impedance for maximum RMS power.

EXTENSION SPEAKERS:

The extension speaker for the KB1010 is the 1010E and for the KB1015, the model number

is 1015E. Please contact Carvin sales at 800-854-2235 or carvin.com.