HD15 dodgy sound

nuclearbass wrote: mini-mad wrote: Nothing wrong with soundlab... aside from the boxes... the drivers... the crossover and the bell cable and connections use, other then that they were fine Yes the corner protectors are well worth the cabs cost along with those fake piezo's

...oh yeah the corners and piezos were sh!t too!, but other then that they were great boxes! (If you excuse the complete lack of bracing!)

Works perfect.

So.... you run them in wat band and with what filters?

(And do you have any pics of all 18?)

so its 200 now, that changed quick, next there will be no need for mids as they'll play up to your comps??

@mini, no pics off all 18 yet as the 6 above are for a different project and have yet to be painted or loaded, but im sure ill manage a pic at some point LOL

back to the OP
Have a play around if it sounds good your ears then its probably going to sound good.

i play mine on a butterworth filter on a 12db/octave slope, if the musics going to be a bit too bass heavy then i put a steeper slope on to save stressing the driver but usually and take some x1s if it was going to be a bass heavy night.

nuclearbass wrote: so its 200 now, that changed quick, next there will be no need for mids as they'll play up to your comps??

  I would love to hear 18 Hds together, it would probably re-arrange your internal organs! I had four HD215s and they didn't half hoof it out. Sadly, I sold them nearly a year ago as I needed funds and space, I haven't heard a sound system since with the same brutal kick they had (not that I've been far to hear any!!), I still miss cranking them up in a big room, the pair of 18" reflex cabs I have now do what I need of them but its not the same.

Just a note of caution.
Most feedback along the way with the HD15 has been that once you get much more than 5-600W per box, you simply don't get any more returns from them. Although the old adage of 2x amp power to RMS is good, from experience, driving them really hard with big amps doesn't actually bring anything more to the table, other than risk of damage (which people have seen when driving hard). This was often with the recommended PD154 driver but also seen with PD156 (off the top of my head) which all considered to be fairly tough drivers.
Go carefully... ;)

Also, do you have wadding/dampening material in your rear chamber? This can help with the sound but I would tend to agree that 120-140 LPF would be about the optimum.

Edited by norty303 - 03 November 2014 at 5:39pm