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<blockquote data-quote="Peter Morris" data-source="post: 140797" data-attributes="member: 652">Re: Infocomm???Ooops - sorry Ivan I meant to write +/- 5 dB&nbsp; (10dB total)&nbsp; re: 108 its 3 dB down @ 40Hz, 4 dB down @35Hz plus 6 dB @138Hz. To me if you are going to quote a frequency range 35 to 250Hz your specifications should say +/- 5 dB, if you want to use +/- 4 dB then it should be 35 to 120Hz in this case, and the SPL should be referenced to 2 volts given that its a 4 ohm driver&nbsp; ... like every one else, but I know you disagree on this last point.<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":)" title="Smile&nbsp; &nbsp; :)"&nbsp; data-smilie="1"data-shortname=":)" />~<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f642.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":-)" title="Smile&nbsp; &nbsp; :-)"&nbsp; data-smilie="1"data-shortname=":-)" />~:smile:</blockquote>

[QUOTE="Peter Morris, post: 140797, member: 652"] Re: Infocomm??? Ooops - sorry Ivan I meant to write +/- 5 dB (10dB total) re: 108 its 3 dB down @ 40Hz, 4 dB down @35Hz plus 6 dB @138Hz. To me if you are going to quote a frequency range 35 to 250Hz your specifications should say +/- 5 dB, if you want to use +/- 4 dB then it should be 35 to 120Hz in this case, and the SPL should be referenced to 2 volts given that its a 4 ohm driver ... like every one else, but I know you disagree on this last point.:)~:-)~:smile: [/QUOTE]

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