© 2003 Altec Lansing Professional y1000 W. Wilshire Blvd., Suite 362 yOklahoma City, Oklahoma 73116
6125A Revision 01
6125A
6-Channel Power Amplifier
FEATURES – THE ALTEC LANSING DIFFERENCE
•150W per Channel @ 8 ohms
•250W per Channel @ 4 ohms
•500W with Two Channels Bridged @ 8 ohms
•Switchable HP Filter on Each Input
•Euroblock Input Connectors
•Output Terminal Block
GENERAL PRODUCT DESCRIPTION
Altec Lansing’s 6125A 6-channel power amplifier is a
professional, high quality solution for your permanent install
needs. The 6125A features six highly efficient, independent,
high-speed switched MosFet power amplifiers in one compact
package.
Each input has a Euroblock connector located on the back panel.
Detented attenuators on the back panel offer added security as
well as repeatable settings. System integrators and consultants
will appreciate the Euroblock input connectors. Euroblock
connectors allow bare wire to be easily connected to the
amplifier without expensive connectors and soldering. All
channel inputs are electronically balanced. For low frequency
protection, each pair of inputs has a selectable 12dB/octave
high-pass filter at 50Hz. Mono/Stereo and Dual/Bridge select
switches are safely out of sight on the back panel.
Individual channel LED’s are on the front panel for Protect,
Thermal Overload, Clip, and Signal Presence. The AC power
switch is also on the front panel.
Each channel can deliver 150W into 8 ohms, 250W into 4 ohms,
and channels 1-2 or 3-4 or 5-6 can be bridged into 8 ohms to
deliver 500W. The 6125A outputs are stable into complex loads,
including pure capacitors and inductors, and can easily drive
loads involving 25, 50, 70.7 or 100V transformers.
Cooling is of paramount importance to a professional power
amplifier. The 6125A has a temperature sensitive 3-speed fan
that draws air from the front and exits out the back. An internal
120VAC power supply is fused at 12A and can be selected for
220VAC. Use an 10A fuse for 220VAC operation.
Altec Lansing’s 6125A multi-channel power amplifier delivers six
channels of 250W stable audio power. The 6125A can satisfy
your most demanding applications. It can drive 70V
transformers, floor monitors, and mains speakers, all at the same
time.
GENERAL SPECIFICATIONS
POWER OUTPUT: *
(maximum average power, 0.1% THD, 1kHz)
Rated Per Channel, All Channels Driven
4 ohm: 250 Watts RMS¥ / 8 ohm: 150 Watts RMS
Mono Bridged (2 channels) 8 ohm: 500 Watts RMS
INPUT IMPEDANCE:
10k ohm balanced, 37k ohm unbalanced
HIGH PASS FILTER: 50Hz, 12dB/octave
TOTAL HARMONIC DISTORTION: **
<0.2% @ 8 ohms . . . 20Hz – 20kHz
IMD (throughout power range)
SMPTE 60Hz/7kHz 4:1 ** . . . <0.1% @ 8 ohms
IHF @ 8 ohms . . . 0.1% @ 8 ohms
HUM & NOISE: ** -100dB from full output (A-weighted)
FULL POWER INPUT SENSITIVITY:
1.08V RMS (2.88dBu)
FREQUENCY RESPONSE
8 ohm . . . +0.5dB 20Hz – 20kHz
4 ohm . . . +1.5dB 20Hz – 20kHz
Voltage Gain . . . 32X (30.1dB)
CROSSTALK: <-80dB . . . 20 Hz – 1kHz
SIGNAL PRESENT SENSITIVITY: 13V RMS (-35.5dBu)
POWER REQUIREMENT: switch selected
50/60Hz @ 110 – 125VAC or 220 – 250VAC,
Typ. Idle Current . . . 0.81A @ 120VAC (0.42A @ 220VAC)
Current with Typical Audio Program Material . . .
12.0A @ 120VAC (6A @ 220VAC)
(4 ohm load x 4 channels)
CONNECTIONS
Inputs . . . Euroblock / Outputs . . . Terminal Strip
DIMENSIONS
19”W x 5.25”H x 16.5”D (48.3cm x 13.3cm x 41.9cm)
WEIGHT
45lbs (20.4kg) . . . net weight
* Continuous power limited by power line capacity
** Non-conventional amplifiers measured for THD
and noise with limited bandwidth
¥ Signal peaks in audio programming may trigger protection
circuitry at low line voltages.
Specifications are subject to change or improvement
without notice
