Rolls manual RPQ160 Parametric Equalizer, FEATURES Four bands of parametric equalization

			PWR
LEVEL				+15
	0			dB
				15
				-
WIDTH		12k	3 .3	OCT
FREQ	6k			20k
	4k			HZ
	2k	900		600
LEVEL				+15
	0			dB
				15
				-
WIDTH			3 .3	OCT
FREQ	3.3k	7k		10k
	2.1k			HZ

INPUT

OUTPUT

NRTL/C

RPQ160 Parametric Equalizer

The RPQ160 is a four-band parametric equalizer for the professional audio installation and music market. The unit is housed in a steel painted 1U rack space chassis, has an internal power supply, and is designed to withstand the rigors of road use.

Each frequency band has a variable Frequency select control which adjusts the frequency center, a Width (Q) control which varies the shape of the equalization curve, and a +/- 15 dB Level control. Additional frequency control has been provided with variable High and Low pass shelving filters. An overall Level control, a Bypass switch, and a Power LED round out the front panel.

Since equalization is used on virtually every type of audio signal and in many various applica- tions, the RPQ160 has RCA, 1/4" and XLR inputs and outputs provided on the rear panel.

A parametric equalizer, unlike conventional graphic equalizers, provides for the precise con- trol over the frequency selection, band width and levels. The RPQ160 is a powerful tool when

used for room equalization, sound reinforcement, or home or studio recording applications.

FEATURES:

• Four bands of parametric equalization

•+/- 15 dB of Boost/Cut for each frequency

•RCA, 1/4" and XLR inputs and outputs

• Adjustable high and low shelving filters

• "T" Filters, which avoid the complexity and distortion of state-variable filters

	800		400		300
					+15
	0				dB
					-15
WIDTH			1.8k	3 .3	OCT
FREQ	1.1k				3k
	800				HZ
	300		166		150
LEVEL					+15
	0				dB
					15
					-
WIDTH			900	3 .3	OCT
FREQ	600				1.5k
	400				HZ
	200		100		70
					CLIP
LEVEL					+12
	0				dB
					12
					-
SHELF	6	10			30
					KHZ
HIGH	4	2	1.5		500 1
		200		400
SHELF	100				HZ
LOW	50 30		20		16	ACTIVE

		RISQUE DE CHOC - NE PASENLEVER	EQUIPMENT TO RAIN		DO NOT NOT REMOVE BACK. NO USER SERVICABLE PARTSINSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL
			THISEXPOSENOTDO
SERIAL NUMBER			WARNING: OR MOISTURE. TO REDUCE THEELECTRICSHOCKRISKOF
		CAUTION		RISK OF ELECTRIC SHOCK	DO NOT OPEN
	15VA			U.S.A.

O dB Set at 30 khz

Set at 1 khz

2040 100 320 640 4k 12k 20k 40k Frequency (Hz)

HIGH SHELF SWEEP DIAGRAM

Set at 16Hz O dB

Set at 500 Hz

1020 40 80 160 320 640 12k 16k 20k Frequency (Hz)

LOW SHELF SWEEP DIAGRAM

	20
	15
	10
dB/division5	5
	-5
Amplitude,	-10
	-15
	-20

50 100 200 600 1k 2k 6k 10k 20k

Frequency (Hz)

The two shelving filters are designed to tai- lor the frequency response of the signal; the Low Shelf cuts the frequencies 3 dB at the control's indicated setting and rolls off be- low, and the High Shelf cuts the frequencies 3dB at the indicated setting and rolls off above.

The Low Shelf Sweep Diagram shows the re- sponse curve of the Low Shelf filter at its minimum and maximum setting.

The High Shelf Sweep Diagram shows the response curve of the High Shelf filter at its minimum and maximum setting.

Shown to the left is a typical symmetrical response curve of a swept parametric band filter with the Frequency control set at 1 kHz, the Level set at +15 and -15 dB, and the Oc- tave control set at .3, .5, 1, and 3. These curves remain consistent over the frequency spectrum, they simply shift to whatever fre- quency setting is indicated by the Frequency control.

120 VAC 50/60 Hz MADE IN

ROLLS Coporation 5143 South Main Street, Salt Lake City, UT, 84107

(801)263-9053 FAX (801) 263-9068 rolls@rolls.com • www.rolls.com