First, we designed the successful Pennywise for thefolks at Parts Express…then the extraordinary B741 forScanSpeak…and now, we’re introducing the stunningXmaX Speaker System for SB Acoustics.

The XmaX is a 3-way system comprised of twopowerful 10-inch woofers, a pair of full-throated 6.5-inch mid-range drivers, apitch-perfect 1-inch ring radiator tweeter…and,for extra vibrancy and substance in the highfrequencies, an ambient tweeter placedstrategically on the rear. The striking cabinet isdesigned for optimal sound fidelity and clarity.

But what makes this system truly special is theoption of assembling the speakers yourself,with all components carefully prepared andshipped directly to you.* The performance ofthese magnificent speakers will easily rival thatof retail models costing many times more.

This is a level of audio excellence rarely madeavailable at such affordable pricing. From thesound masters at SB Acoustics and the genius ofPBN Audio: XmaX, direct to you.

*Drivers and assembled crossover provided through Madisound.

Another InnovationFrom The Minds Of

(619) 440-8237 • 380 Vernon Way, Suites I & J • El Cajon, CA 92020 • www.pbnaudio.com

You have the choice of purchasing a completed pair of assembled andtested XmaX speakers with piano-lacquered cabinets. Assembled speakersinclude exposed crossovers behind a plexiglass window on rear.Available through PBN Audio for only $12,500

Price does not include shipping costs, which will vary

Big Time Savings…And The Pride Of Building It Youself

DIMENSIONAL DRAWINGS

FRONT SIDE

UPPER MODULESEPARATOR

WOOFER MODULE SEPARATOR

V12.830VGenV1

C1

3.3uF10%

L1

0.04nH20 gauge

1%

C2

8.2uF10% R

1

4 oh

ms

5%

C3

47

uF

10

%

L2

0.9

5m

H1

8 g

au

ge

1%

Imp CNJ

S1

A

BC

R2

5R6=-9dB

Delay NA

S2AB

S3AB

Padding Reverse Polarity Switch

S2/S3: DPDT

R3

3R0=-6dB

R4

1R3=-3dB

OPTIONAL REAR TWEETER

SB

26

STA

C-C

00

0-4

L+

DC

R co

mb

ined

=4

.70

oh

ms

The 10-inch woofers (SB29NRX75-6) are placed in thelower enclosure, in a full 100-liter volume. They’re tunedin the low 20 Hz range, with a 5" inner diameter pipemeasuring 16" long. (Pipe is available at www.Flexpvc.com,and they’ll cut it to length for you.) The woofers have,individually, a low 6 Ohm impedance, so the combinedimpedance hovers around 2.5 Ohms when connected inparallel operating below 500 Hz. However, it is almostresistive, so it will not tax your amplifier unreasonably.Bear in mind that the DCR on the inductors in the

crossover is critical to maintain the electrical phase of thecrossover, so the 15-gauge on the first inductor and the17-gauge on the second are selected to maintain the DCRin the correct range.

The upper cabinet houses a pair 6.5 inch mid-range drivers(SB17NRXC35-8-UC) which flank a 1-inch ring radiatortweeter (SB29RDC-C000-4). The ambient tweeter on therear (SB26-STAC-C000-4) completes the assemblage.

All Capacitors are polypropylene, unless otherwise indicated.All Inductors are air-cored, and use ONLY wire gauge indicated.Rear Tweeter not shown.

SB29NRX75-6 x2

C1

10

%

L1

14

.3m

H1

8 g

auge

1%

L2

2.80mH15 gauge

1%

C2

56

0u

F1

0%

L3

1.54mH17 gauge

1%

C3

15

0u

Felectrolytic

10

%

L+

DC

R co

mb

ined

=2

.2 o

hm

s

R4

2.4 ohms

5%

C4

12

00

uF

400/400/400electrolytic

10

%

L4

5.2

3m

H1

8 g

auge

1%

SB

17

NR

XC

35

-8-U

C x2

C5

33

uF

10

%

L5

0.6mH18 gauge

1%

L6

0.15mH18 gauge

1%

C6

150uF10%

L7

2.0

0m

H 1

8 g

au

ge

1%

C7

225uF10%

L8

0.36mH18 gauge

1%

R7A

5.8ohms25w5%

C8

27uF10%

Very Sensitive DCRL+DCR combined

Very Sensitive DCRL+DCR combined

L+

DC

R co

mb

ined

L+

DC

R co

mb

ined

=3

.30

oh

ms

Imp CNJ

Imp CNJ

Peak Tank

Front Twt

R9

3.9

oh

ms

5%

C9

82

uF

10

%

L9

0.7

5m

H1

8 g

uag

e1

%

C10

12uF10%

L1

0

0.2

1m

H1

%

C11

15uF10%

R10

8.2ohms5%

R11

0.62ohms5%

0 mS Delay

-.052mS Delay

-.115mS Delay

75/75 75/75/75

+

220 /330electrolytic

10

00

uF

500/500electrolytic

L+

DC

R co

mb

ined

=4

.30

oh

ms

R7

5.8ohms25w5%

SB

29

RD

C-C

00

0-4

Imp CNJ

10 Hz 20 50 100 200 500 1K 2K 5K 10K 20K 40K

dBSPL

55

60

65

70

75

80

85

90

95

100

105

MID-RANGE

WOOFER

TWEETER

10 Hz 20 50 100 200 500 1K 2K 5K 10K 20K 40K

dBSPL

45

50

55

60

65

70

75

80

85

90

95

100

105

WOOFER MID-RANGE TWEETER

COMBINED

SPEAKER DESCRIPTION

SPL vs. FREQUENCY

(Completed System)

SPL vs. FREQUENCY(Raw Drivers in Cabinet)

IMPEDANCE vs. FREQUENCY

(Completed System)