Martin Audio O-LINE User manual

The Martin Experience
All material © 2008. Martin Audio Ltd. Subject to change without notice.
Powering your
O-Line™
(For general system preparation, see the O-Line
system preparation - preliminary guidance)

1
Powering your O-Line™
(Forgeneralsystempreparation,seetheO-LinepreliminaryInstallationGuide)
General
Your O-Line is deliveredinblocksof4modulesreadywiredinparallel.Thesefour‐moduleblocksmaybe
separated into smaller blocks or individual modules, linked and paralleled to other blocks or modules using
shortlinkwires‐orseriesconnectedtootherblocksormodulesusingtheseriesConnectorpcbsuppliedwith
eachfour‐moduleblock(seeillustrationbelow).
TheConnectorpcbalsoprovidesaninputtermination.
Thisallowstheinstallertobuildanarrayofappropriatelength(werecommend6%ofeachplanetobecovered
forgoodspectralbalance)withelectricalcharacteristicsbestsuitedtotheMartinAudiopoweramplifier
chosen.

2
Amplifierchoicesandlimitersettings
ThefollowingchartshowsMartinAudiopoweramplifierchoices(indicatedbydots)andMartinAudioDX1.5or
DX2limitersettings(inred)toobtainoptimalperformancefromthewiderangeofO-Linearraysizesand
patchconfigurationspossible.
Single channels, two channel and four channel configurations are shown. Multi‐channel configurations are
usefulwherezonecontrolmayberequired.
To avoid amplifier clipping (which dumps excessive power into the HF arrays in the form of odd‐order
harmonics)itisbesttochoosethehighestpoweramplifierintherangeindicated.Notethatpoweramplifiers
mustbesettotheindustrystandardmaximumvoltagegainof32dB(x40)withacorrectlylimitedDX1.5orDX2
systemcontrollertocomplywithwarrantyconditions.
(Thischartisrepeatedfull‐sizeonthenextpageforeasyreference)
ClipLimsettings
MartinAudioloudspeakersareAESpowerrated.AESratingsallowforupto6dBvoltage(4xpower)
instantaneouspeaks.WethereforerecommendthatyousetyourDX1.5orDX2outputchannelClipLimsto
+6dB.
Controllerpresets?
NotethatwedonotpublishfixedpresetsfortheO-Line–apartfromrecommendingastandard60Hzhighpass
filterandtherequiredlimitersettings.TheO-LineSoftware–usedtooptimisethearrayshape–also
generatesthecontrollersettingsrequiredforaflatin‐situsystemresponseortomeetyourchosenhousecurve
usingtheOptimiseEQfunction.

3

4
O-Linearraypatches
SingleO-Linemodulesare16ohmelements.Fourmodulesaresuppliedineachcarton.Thesefourmodulesare
connected in parallel to form a standard 4 ohm block but may be reconfigured, paralleled or series
connectedtoprovideawidevarietyofseries/parallelconfigurationschosenfromtheprecedingchart.
Singlechannelconfigurations
1modulearray(16ohms)
2modulearray(8ohms)
4modulearray(4ohms)
Pleasenotethatifyoudon’tunderstandseriesandparallelelectricalconfigurations,youarestrongly
advisedtoenlisttheadviceofaprofessionsoundsystemtechnicianorexperiencedinstaller.

5
6modulearray(2.67ohms)
6modulearray(10.67ohms)

6
8modulearray(8ohms)
12modulearray(5.3ohms)

7
16modulearray(4ohms)

8
24modulearray(2.67ohms)

9
Twochannelconfigurations
6modulearray(5.34ohmsperchannel)
8modulearray(4ohmsperchannel)