Topic: mid driver selection pros and cons

[netken]

ot tuans ... i have a pair of 12M and L3 for sale just inc case ... thanks ...

[polkman]

what is a life sized vocal??

The vocal should sound like it is singing infront of you. It should not sound small and far away.

[polkman]

mid bass can take it meh ???

Boleh...most home speaker also got not highpass for midbass.

[louis]

Boleh...most home speaker also got not highpass for midbass.

yup. but i believe all are being tune by the box to limit the midbass excursion.
if really to play tat low frequency for IB , i believe either u have to play at a low volume instead of a dynamic type.
really wat i saw at 33hz at 6 db is like almost playing fullrange for midbass in IB setup.

even the recommended frequency spec from the manufacturer are starting higher then that.

[Zenn]

neymind la, if rosak can buy new one, hehehe....

his IR6 i would go any lower than 63hz @ 12db or 50hz @ 18db thereabouts lah..

[craziechild]

hehe... been trying out to cross tht low but i think its very stressful for the mid....

anyway... currently...

tweeter hp:3.2k 12db
mid range hp: 300 12db ; lp: 3.2k 12db
mid bass: hp 50 12db ; lp: 300 12db
sub bass lp: 63 6db

anyway... wan to ask... does bandpass the the sub the same as sub-sonic filter? i dunno why and without any clear reason but there is a friend here telling me try it, saying it yields a better results for the bass i wanted... any idea?

but so far... the kick bass improved a bit... but then the sub feels like its beside me rather than in front... anyway to pull it back to the front at 6db?

i have tried 18db and 24db on the sub... but doing so i loose the mid bass and bass gone back to the front...

[polkman]

but so far... the kick bass improved a bit... but then the sub feels like its beside me rather than in front... anyway to pull it back to the front at 6db?

i have tried 18db and 24db on the sub... but doing so i loose the mid bass and bass gone back to the front...

Try change the sub xover to 12dB and midbass to 6dB. Next try change the midbass highpass xover 45Hz, 40Hz, 33Hz to select the best setting. 

[polkman]

yup. but i believe all are being tune by the box to limit the midbass excursion.
if really to play tat low frequency for IB , i believe either u have to play at a low volume instead of a dynamic type.
really wat i saw at 33hz at 6 db is like almost playing fullrange for midbass in IB setup.

even the recommended frequency spec from the manufacturer are starting higher then that.

Because he is playing 3-way front active, the low highpass xover point for midbass will not effect his midrange unlike a 3-way passive setup (ie where the midbass and midrange share a single channel amp)

[craziechild]

polk.. i think my mid cannot take up those low frequency neh... any other idea? cuz it does sound like the sound changed when i cross it tht low... currently also when i play some RnB tracks... the bass from the mid is not so "smooth"... if audiophile type can la... hehe...

anyway... what about the sub band pass thing??

and also should i change the sub out to one channel only on the processor or remain it as 2 channel? any pro-and cons there?

thanks...

[polkman]

polk.. i think my mid cannot take up those low frequency neh... any other idea? cuz it does sound like the sound changed when i cross it tht low... currently also when i play some RnB tracks... the bass from the mid is not so "smooth"... if audiophile type can la... hehe...

anyway... what about the sub band pass thing??

and also should i change the sub out to one channel only on the processor or remain it as 2 channel? any pro-and cons there?

thanks...

Sub bandpass is like subsonic filter. If you have subsonic filter at your amp...you don't need to set the highpass for the sub.

It is ok to run 2 channel from the processor for the sub but make sure both outputs are set to mono.

Btw have you start to EQ. If not try to increase the gain for 60Hz - 100Hz.

[craziechild]

Eq not yet... cuz now still finding the the good stage height and stage... i think should find the right crossover point and gain matching first before starting the EQ right?

 

[polkman]

Eq not yet... cuz now still finding the the good stage height and stage... i think should find the right crossover point and gain matching first before starting the EQ right?

 

Boosting the gain for 60-100Hz will give you more upfront bass but you need to change the sub xover to 12dB. What we try to do is to increase the output of the midbass without much increase in sub output.

[craziechild]

you mean EQ tht range is it? will try when i got the free time... thanks...

[polkman]

yeah