3Com Gain, Delay, Polarity, Bi-ampSystem Parameters iQ 10 & iQ 10C, Unit/Name, Mid Section

Models: iQ 10 iQ 10C iQ 10P iQ 10PC

1 24
Download 24 pages 61.67 Kb
Page 19
Image 19

12.System Configurations & OEM Controllers Passive or Biamp?

The iQ 10 is supplied as standard for bi-amp operation, therefore there is no internal passive crossover network between the mid & hf units. The Bi-amp controller parameters below must be adhered to for optimum performance.

An optional iQ 10P (passive version) can be ordered if (part no. 8001 2210)

A loudspeaker driven in Biamp mode offers a number of performance advantages, such as increased system headroom. Audio program materiel is made up of many different frequencies and harmonics. In music materiel, most of the energy is in the low frequencies, with less in the highs. When both high and low frequencies are present in a signal, the stronger low frequencies can use up amp power, leaving little or no reserve for the highs, so they are more likely to cause the power amplifier to clip. In a Biamp driven system, a smaller amp can handle high frequencies, LF amp clipping is less of a factor, and less overall amplifier capacity is needed due to the efficiency improvement in the absence of a passive crossover.

Bi-amp System Parameters (iQ 10 & iQ 10C)

Parameter

Unit/Name

Mid Section

High Section

 

 

 

 

Gain

(dB)

0

0

Delay*

(ms)

3.669

3.578

Polarity

 

Positive

Positive

 

 

 

 

HPF

Freq (Hz)

180

2820

 

 

 

 

 

Slope (dB/oct)

24

24

 

Filter Shape

Linkwitz Riley

Linkwitz Riley

 

 

 

 

LPF

Freq (Hz)

2820

Thru

 

 

 

 

 

Slope (dB/oct)

24

NA

 

Filter Shape

Linkwitz Riley

NA

 

 

 

 

PEQ 1

Freq (Hz)

354

7080

Level (dB)

+1.7

+5

 

Type

Parametric

Parametric

 

Q / Bandwidth

0.8 / 1.25

3.1 / 0.32

 

 

 

 

 

Freq (Hz)

1120

17800

PEQ 2

Level (dB)

-2

+6

 

Type

Parametric

Parametric

 

Q / Bandwidth

2 / 0.5

2.5 / 0.4

ÄNote Apply only when an iQ 10 is stacked directly on top of an iQ 18B Sub bass. Otherwise apply 0.1ms to the Midrange and then any other required delay to compensate for distance between relevant sources.

19

Page 19
Image 19
3Com iQ 10PC Gain, Delay, Polarity, Bi-ampSystem Parameters iQ 10 & iQ 10C, Unit/Name, Mid Section, High Section