One Systems 112.HSB User guide

The One Systems 112.HSB is a 12-inch (305 mm) subwoofer / bass module designed to augment the low-end response of all variants of One Systems full-range speakers including the 104, 106, 108, 208, 112 and 212 models.!

There are two basic system conﬁgurations for using the 112.HSB: 1). As a “classic” subwoofer or

2). In an “overlap” mode that can double the system’s acoustic output from 50 Hz to the upper overlap frequency range of 80 Hz and 120 Hz. !

All of the small and medium-format speakers - the 104, 106, 108 and 208 models - should be used with the 112.HSB in the “classic” subwoofer mode only. !

The “overlap” mode is most suited for using the subwoofer with the 112 and 212 models to maximize low-frequency output and to improve the system’s very low-frequency polar control. !

Recommended processor settings are shown for the “classic” subwoofer mode and for the “overlap” mode. Both conﬁgurations require use of a DSP-based loudspeaker system processor and two ampliﬁer channels (bi-ampliﬁcation). An analog crossover may be used for the “classic” subwoofer

mode, but only a DSP-based processor may be used for the “overlap” mode.!

“CLASSIC” SUBWOOFER MODE

Parameter

Frequency

Filter Alignment

Sub Channel Gain

112.HSB Output

High-Pass Filter

45 Hz

4th order Butterworth

Set to

personal taste

Low-Pass Filter

80 Hz - 120 Hz

4th order Linkwitz-Riley

Parametric

Filter Settings

for sub

PEQ 1

60 Hz

PEQ Gain = + 4 dB

PEQ Bandwidth =

0.3 octave

PEQ 2

80 Hz

PEQ Gain = +2.5 dB

PEQ Bandwidth =

0.3 octave

Output for

Full-Range

Speaker

High-Pass Filter

80 Hz -

120 Hz (same as low-pass

ﬁlter setting

for sub)

4th order Linkwitz-Riley

n.a.

Parametric

FIlter Settings

Use the recommended settings for the speciﬁc One Systems model

being used

Any parametric EQ used on the output for the full-range speaker should use the

speciﬁc parameters recommended for the model being used. Any EQ

recommendations with center frequencies below the high-pass ﬁlter frequency

should be set to 0 dB (not used).

OPTIMIZING SYSTEM PERFORMANCE

WITH THE 112.HSB

As noted, the “OVERLAP” Mode is best suited for using with 112 and 212 models

with the 112.HSB subwoofer.

“OVERLAP” MODE

Parameter

Frequency

Filter Alignment

Sub Channel Gain

112.HSB Output

High-Pass Filter

45 Hz

4th order Butterworth

Set to

personal taste

Low-Pass Filter

80 Hz - 120 Hz

4th order Linkwitz-Riley

Parametric

Filter Settings

for sub

PEQ 1

60 Hz

PEQ Gain = + 4 dB

PEQ Bandwidth =

0.3 octave

PEQ 2

80 Hz

PEQ Gain = +2.5 dB

PEQ Bandwidth =

0.3 octave

Output for

Full-Range

Speaker

High-Pass Filter

45 Hz

4th order Butterworth

n.a.

In the "Overlap" mode, the acoustic summing of the low-frequency section (112.HSB

output) will require delay applied to the full-range output. The speciﬁc amount of

delay required will be based on the group delay associated with the low-pass ﬁlter of

the 112.HSB's output, but also based on the physical location of the 112.HSB

relative to the full-range speaker.

The recommended initial delay on the full-range output should be approximately

5 mSec to 6 mSec. !

This value can be varied to achieve the best low-frequency summing. In general, the

lower the frequency of the low-pass ﬁlter in the 112.HSB's output, the larger the

required time delay on the full-range channel (Approximately 6 mSec for an 80 Hz

low-pass frequency to 5mSec for a 120 Hz low-pass frequency). The delay should be

applied to the full-range output! The delay value may require additional tuning based

on the physical location of the two enclosures.

OPTIMIZING SYSTEM PERFORMANCE

WITH THE 112.HSB

One Systems, Inc."" www.onesystems.com tel:+1-615-823-1655 fax: +1-615-261-1429

!

One Systems, Inc."" www.onesystems.com tel:+1-615-823-1655 fax: +1-615-261-1429

MODEL

104.HTH

106.HTH

108.HTC

High-Pass Filter:

Butterworth 24 dB

High-Pass Frequency:

70 Hz

Filter 1 Type:

PEQ

Filter 1 Frequency:

4,000 Hz

800 Hz

100 Hz

Filter 1 Bandwidth:

0.33 octave / Q = 4.3

Filter 1 Level (dB):

- 2.0 dB

+ 3.0 dB

Filter 2 Type:

PEQ

Filter 2 Frequency:

2,500 Hz

1,000 Hz

125 Hz

Filter 2 Bandwidth:

0.33 octave / Q = 4.3

Filter 2 Level (dB):

- 2.0 dB

+ 3.0 dB

Filter 3 Type:

Low Shelf

PEQ

Filter 3 Frequency:

150 Hz

1,250 Hz

160 Hz

Filter 3 Bandwidth:

12 dB / octave

0.33 octave / Q=4.3

0.33 octave / Q = 4.3

Filter 3 Level (dB):

+ 3.0 dB

-2.0 dB

+ 3.0 dB

Filter 4 Type:

Low Shelf

PEQ

Filter 4 Frequency:

125 Hz

4,000 Hz

Filter 4 Bandwidth:

12 dB / octave

0.33 octave / Q = 4.3

Filter 4 Level (dB):

+3.0 dB

- 3.0 dB

DSP PARAMETERS FOR ONE SYSTEMS FULL-RANGE MODELS

Please note - the settings are identical for the HTH / HTC models

and the previous IM Series versions of those models.

One Systems, Inc."" www.onesystems.com tel:+1-615-823-1655 fax: +1-615-261-1429

MODEL

108.HTH with

ETS 60/40 Horn

108.HTH with

ETS 105/60 Horn

208.HTC

High-Pass Filter:

Butterworth 24 dB

High-Pass

Frequency:

65 Hz

Filter 1 Type:

PEQ

Filter 1 Frequency:

100 Hz

1,250 Hz

100 Hz

Filter 1 Bandwidth:

0.33 octave / Q = 4.3

0.5 octave / Q = 2.87

Filter 1 Level (dB):

- 2.0 dB

- 2.5 dB

Filter 2 Type:

PEQ

Filter 2 Frequency:

100 Hz

Filter 2 Bandwidth:

0.5 octave / Q = 2.87

Filter 2 Level (dB):

+ 2.0 dB

For best results, use the “Overlap” mode when combining the 112 and 212 models with the 112.HSB subwoofer

MODEL

112.HTH with

ET 60/40 Horn

112.HTH with

ET 105/60 Horn

212.HC

High-Pass Filter:

Butterworth 24 dB

High-Pass Frequency:

50 Hz

55 Hz

Filter 1 Type:

PEQ

Filter 1 Frequency:

1,000 Hz

Filter 1 Bandwidth:

0.5 octave / Q = 2.87

0.4 octave / Q = 3.59

0.33 octave / Q = 4.3

Filter 1 Level:

- 2.0 dB

- 2.5 dB

Filter 2 Type:

PEQ

Filter 2 Frequency:

65 Hz

70 Hz

Filter 2 Bandwidth:

0.33 octave / Q = 4.3

Filter 2 Level:

+ 3.0 dB

+ 2.0 dB

Filter 1 Type:

PEQ

Filter 1 Frequency:

3,000 Hz

Filter 1 Bandwidth:

0.33 octave / Q = 4.3

Filter 1 Level:

- 2.5 dB

One Systems, Inc."" www.onesystems.com tel:+1-615-823-1655 fax: +1-615-261-1429