Ashly SC88 User Manual

SC88

CTCpCQ

4WV ELECTRONC CROSSOVER

FEATURES:

• Logical control layout

• 12dB per octave slopes

• Inputs and outputs that can be used as
balanced or unbalanced

• Rugged 16 gauge steel chassis

• Flat summing

• Peak overload lights

• In-phase outputs

• Our exclusive rolloff control to flatten
frequency response at the crossover point

• Optional 7-way mono operation

The Ashly Audio Model SC-88 Stereo Four-Way Electronic Crossover is
designed to fill the needs of modern high power sound systems. Crossover

points and rolloff are continuously adjustable and individual output stages

with wide range gain adjustments will drive long cable runs and accu

rately match any power amplifiers.

I ASHLY I

ASHLY AUDIO INC.

BIOCK DIAGRAM

OUTPUT STAGES

The SC-88 uses state-variable filter circuits to perform the frequency divisions. These filters provide
simultaneous low-pass and high-pass outputs. Three filters are cascaded for four-way operation.
Inverters are included on alternate outputs to keep everything in-phase.

A“Q" adjustment (called
rolloff) is included for adjustment of frequency response in the crossover region. This allows flat summing
and in-phase outputs.

The output stages have a wide range gain adjustment with a special feedback level control circuit to

maintain an optimum signal-to-noise ratio at any setting.

A special electronic power monitor for the output stages prevents turn-on transients without the use of

relays.
Both inputs and outputs can be used ds balanced or unbalanced and a peak overload circuit monitors

all critical points in the circuit to insure low-distortion operation.

SPECIFICATIONS:
Input gain;

Crossover frequencies:
Slope:
Rolloff:
Output gain:
Input impedance:
Output impedance:
Max. in-out level:
Frequency response:

Distortion:
Hum and Noise:

Power:

Shipping Weight:

-00- -MOdB
16HZ-800HZ, 160Hz-8kHz, 480Hz-24kHz
12dB/OCT.

1.5dB-12dB (crossover point depth)

-00- -h20dB

10k balanced bridging

50/^unbalanced-terminate with 600/Лог more

-F20dBV

±.5dB 20Hz-20kHz (within passband)
<.05% THD. -FIOdBV 20 Hz-20 kHz

-90dBV
120 VAC, 50-60Hz, 5W.

10 lbs