Fitting drivers flush?

[HCVP]

Does anyone know if it important to mount speakers flush with the baffle boards when constructing your own enclosures?? I thought it was just for appearance finish, but i've been reading and one article said that if the drivers are not flush, then you may experience spikes within the fq range. Is this true?

[Luke0011]

Assuming your talking about the speakers mounted in the front doors. The sound coming slightly forward and below directly either side of you with you closer to the right speaker presents a horrible frequency response curve, not to mention so many reflective, absorbing and neutral surfaces on countless angles and sizes coupled with noise floor ( road noise ) and your leg getting in the way. As well as the speaker being impossible to seal.

QUOTE" then you may experience spikes within the fq range. ENDQUOTE

I know what flush means when you say with the baffle boards, that is level with the surface. But i think what your trying to say is it important to mount the speaker at the same angle as the baffle board. Either way the individual who has written this article is incorrect. So to answer your question no it is not true. Why? It will actually increase the amount of spikes and dips in the frequency response compared to the two woofers being angled towards your ears.

QUOTE then you may experience spikes within the fq range ENDQUOTE

This quote is technically inaccurate, spikes of what??? what frequency range ??????

It should have been said like this " then you may experience spikes within the frequency response curve."

[Philthy]

He is talking about making speaker boxes for the home, so by "flush" he means recessing them into the boxes.

HCVP, As long as you use some kind of gasket to make sure they are sealed up all nice and airtight, I have never read anywhere that there is any benefit in flush mounting, and I have read a LOT about enclosure design in the last couple months

[HCVP]

He is talking about making speaker boxes for the home, so by "flush" he means recessing them into the boxes.

HCVP, As long as you use some kind of gasket to make sure they are sealed up all nice and airtight, I have never read anywhere that there is any benefit in flush mounting, and I have read a LOT about enclosure design in the last couple months

For the home enclosures yes, but also for a sub box i'm building for a motor home. I guess the same basic principles apply when building a box for any speaker. I see when people build sub boxes for their cars, sometimes they use a router, to cut a groove, so that the sub will sit flush with the front of the baffle, rather than sticking out. Like i said, i thought it was just a personal prefereance thing when it came to the finished looks, its just that one article i read, that got me thinking..

BTW, appologies to Luke, i should have been more specific , i know better

[Luke0011]

He is talking about making speaker boxes for the home, so by "flush" he means recessing them into the boxes.

HCVP, As long as you use some kind of gasket to make sure they are sealed up all nice and airtight, I have never read anywhere that there is any benefit in flush mounting, and I have read a LOT about enclosure design in the last couple months

This is a car audio forum so i did assume it was for a vehicle which it was, dont know why you thought it was home audio anyway as HoldenCommodoreVP never mentioned it. And are you telling me what flush means... Lol yeah well i am a car audio installer so maybe you got your self confused with how i described my flush with the baffle boards as in level with the surface post. Recessing them into the boxes doesnt mean sitting flush does it? But you did mention flush just b4 it so thanks for clearing that up.

For the home enclosures yes, but also for a sub box i'm building for a motor home. I guess the same basic principles apply when building a box for any speaker. I see when people build sub boxes for their cars, sometimes they use a router, to cut a groove, so that the sub will sit flush with the front of the baffle, rather than sticking out. Like i said, i thought it was just a personal prefereance thing when it came to the finished looks, its just that one article i read, that got me thinking..

BTW, appologies to Luke, i should have been more specific , i know better

No need for apologies mate, I answered your question anyway and its good to have the facts when there is a lot of confusion within the audio community with so many opinions. Sub bass frequencies that you hear appear to come from everywhere as the sound wave is a quite large. How you have described how the article was written explains the opinion of one person. But its easy to be convinced also when unsure of the facts.

[HCVP]

Thanks Luke. Philthy is following a build of mine using some AD's in some book shelf's i'm building, and i was wondering about the same question in that build too, which is why he assumed i was reffering to them. But the question was also directed at the sub box also for the van.I'll try and find this article i read, and i'll link you to it.

[Luke0011]

Oh right yes well, now i understand and thanks for letting me know, lol could Philthy have told me that to avoid confusion. Cheers.