Ashly DPX-100 Excessive Hum Or Noise, Warranty Information, Specifications Eq, Compressor/Limiter

Operating Manual - DPX-100 Graphic 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-100 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 pro- tected 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

EQ:

Input Type . . . . . . . . . . . . . . . . Active Balanced Impedance . . . . . . . . . . . . . . . . 20KΩ Balanced

10KΩ Unbalanced

Max. Level . . . . . . . . . . . . . . . . +23dBu

Input Connectors . . . . . . . . . . 1/4" Phone Jack, XLR

Output Type . . . . . . . . . . . . . . . Pseudo-BalancedImpedance . . . . . . . . . . . . . . . . 200Ω Balanced

100Ω Unbalanced

Max Level	+23dBu
Output Connectors	1/4" Phone Jack, XLR

Frequency Response . . . . . . . . ±.25dB 20Hz-20kHzTHD (20Hz-20KHz) . . . . . . . . <.01%@+20dBu IM Distortion (SMPTE) . . . . . <.01%@+20dBu

Output Noise (20Hz-20KHz) . <-100dBuGain Control . . . . . . . . . . . . . . −∞ to +6dB

(EQ in, all faders flat, 20Hz-20KHz)

Filter Type	. . Constant Q/Wein Bridge
Bandwidth	. . 2/3 octave
Tolerance	. . ±3%
Range	. . ±6 or ±15dB
Subsonic Filter	. . 18dB/octave @20Hz
Compressor/Limiter:
Gain:	±15dB
Ratio:	2:1 →	∞
Attack Time:	200∝ S-20mS
Release Time:	100mS-3Sec
Output:	-∞to +18dB
Maximum Input Level: . . . .	+23dBu
Maximum Output Level: . .	+23dBu
Input Impedance:	20KΩ	balanced
Output Impedance:	200Ω Pseudo-Balanced
Frequency Response:	±0.2dB 20Hz-20KHz
Distortion:	<.01% THD, 0dBu, 1KHz
	<0.15% THD, +15dBu,
	20Hz-20KHz

Output Hum and Noise: . . . <-95dBu

DPX-100 Power Requirements:

93VAC-120VAC, 50-60Hz, 10W

Size and Shipping Weight:

19"L x 1.75"H x 6"D (8 lbs.)

Note: 0dBu = 0.775 Vrms

Pseudo-Balanced Output has balanced output impedance with single ended signal.

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