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Operating Manual - DPX-200 Parametric Equalizer - Compressor/Limiter
When Using Heavy Compression, Background Noise Is Noticeable During Quiet Sections Of The Program
As defined in the section on compression, quiet program material is effectively made louder while loud peaks
are made quieter. When the program source is thus raised in volume, its noise floor is also raised in volume by a
proportionate amount. This is not a defect in the compressor/limiter, but an unavoidable side effect of the gain altering
process. If the noise becomes a problem, the solutions are to either decrease noise at the program source, or use less
compression.
Excessive Hum Or Noise
Hum is often caused by a “ground loop” between components. Try using the suggested balanced input and
output hookups if the other pieces of equipment used in conjunction with the DPX-200 have balanced inputs and
outputs. Noise can also be caused by insufficient drive levels. Make sure you are sending a nominal 0 dBV line level
signal to the unit.
12. WARRANTY INFORMATION
Thank you for your expression of confidence in Ashly products. The unit you have just purchased is protected
by a five-year warranty. To establish the warranty, be sure to fill out and mail the warranty card attached to your
product. Fill out the information below for your records.
Model Number ___________________________ Serial Number ___________________________________
Dealer ________________________________ Date of Purchase ___________________________________
13. SPECIFICATIONS - Parametric EQ:
Input Connection, Line in . . . 1/4" Phone Jack, XLR
20KΩ Active Balanced
10KΩ Unbalanced
Gain, Line input . . . . . . . . . . . - ∞ to +15dB
Input Connection, Mic in . . . . Low Z Balanced XLR
Mic Input Pad Attenuator . . . 0dB out / -20dB In
Gain, Mic input . . . . . . . . . . . . +20dB to +55dB
Shelving Filter Frequency Range (midpoint of slope)
Low . . . . . . . . . . . . . . . . . . . . . . 40Hz-400Hz
High . . . . . . . . . . . . . . . . . . . . . 1.6KHz-16KHz
Shelving Filter Amplitude . . . ±15dB
Peak Filter Freq. Range . . . . . 20Hz-20KHz
Peak Filter Bandwidth . . . . . . 3 1/3 to 1/20 Octave
Peak Filter Amplitude . . . . . . ±15dB
Max. Level - All Filters In,
All Level Controls at Unity . . +23dBu
Max Level - One Peak Filter at Max Boost
"Q" 0.3 octave or greater . . . +7dBu
Output Connections . . . . . . . . 1/4" Phone Jack, XLR
200Ω Pseudo-Balanced*
100Ω Unbalanced
Max Output Level . . . . . . . . . . +23dBu
Frequency Response . . . . . . . . ±.2dB 20Hz-20kHz
THD (20Hz-20KHz) . . . . . . . . <.03%@+4dBu
Output Noise
20Hz-20KHz unweighted
All controls at unity gain
EQ Out . . . . . . . . . . . . . . . . . . <-109dBu
EQ Peak Filters In . . . . . . . . . <-93dBu
EQ Peak and Shelving
Filters In . . . . . . . . . . . . . . . . . <-90dBu
(0dBu = 0.775 volts rms, balanced input)
*Pseudo-balanced output is single ended signal with bal-
anced impedance.