I don't know if this is the correct forum but I want to ask, is there a potential problem by stuffing the rear holes with cotton "balls"? I mean can I have overheating from the amp?
For those who are wondering, I got those the other day but now I'd probably want something the between the JBL One Series 104 and these Swans D100 in terms of bass. The Swans have too much bass and the JBL not enough.
In any case, I had also turned down the bass button as well.
For those who are wondering, I got those the other day but now I'd probably want something the between the JBL One Series 104 and these Swans D100 in terms of bass. The Swans have too much bass and the JBL not enough.
In any case, I had also turned down the bass button as well.
Shouldn't overheat as there is no air flow through a single port.
Airflow would require a hole in the base for circulation.
Look at placement - close to a wall or especially in a corner will boost bass spectacularly with a rear port; is this your problem? Adjacent cabinets can also funnel sound and create resonances.
You can experiment with port stuffing (although nothing that may fall through), this may alleviate some of the placement issues.
The manual probably advises distance away from walls and corners.
Airflow would require a hole in the base for circulation.
Look at placement - close to a wall or especially in a corner will boost bass spectacularly with a rear port; is this your problem? Adjacent cabinets can also funnel sound and create resonances.
You can experiment with port stuffing (although nothing that may fall through), this may alleviate some of the placement issues.
The manual probably advises distance away from walls and corners.
Hi,
RussC is right. You could stuff your ports with flow resistive materials ( socks works well) but there is no guarantee it'll be for better ( by stuffing the port you'll change the operating parameters of the driver+box couple, some loudspeaker will accept that some won't).
There is much more chance this is a location issue within the room:
As an ideal theorical approach we assume a loudspeaker radiate sound omnidirectional ( the sound is projected all around and the loudspeaker is at the center of this sphere). Then it radiate in 4pi.
When you are in a room this is still true ( more or less, for the lowend (from 200hz approx) , but you now have boundaries at play ( floor, ceilling, walls).
So let's take a subwoofer as an example.
If you locate your sub on the floor rather than floating in the air you change the 4pi condition to 2pi and as total energy radiated as to go somewhere and there is now only an hemisphere availlable we can expect to have the same amount of power in half the volume so bass will gain +3db.
If you locate your sub at a junction of 1 wall and floor same thing happen again and you now face +6db in low end, and if you locate corner you then have +9db.
This differents locations will then ( dramatically) change the way you perceive the low end with the same initial freq from a loudspeaker.
And this is without taking ports or other 'details' into account...
So before playing with port stuffing and other loudspeaker parameters i would first try to relocate the loudspeakers for the best results at listening position ( sweetspot) which is the place of interest ( with 'traditional' approach there can only be one spot where sound is at best, other location suffers whatever you'll do). And when doing that you'll probably face an other bass related issue known as 'modal behavior' of the room itself, but each step at a time...
RussC is right. You could stuff your ports with flow resistive materials ( socks works well) but there is no guarantee it'll be for better ( by stuffing the port you'll change the operating parameters of the driver+box couple, some loudspeaker will accept that some won't).
There is much more chance this is a location issue within the room:
As an ideal theorical approach we assume a loudspeaker radiate sound omnidirectional ( the sound is projected all around and the loudspeaker is at the center of this sphere). Then it radiate in 4pi.
When you are in a room this is still true ( more or less, for the lowend (from 200hz approx) , but you now have boundaries at play ( floor, ceilling, walls).
So let's take a subwoofer as an example.
If you locate your sub on the floor rather than floating in the air you change the 4pi condition to 2pi and as total energy radiated as to go somewhere and there is now only an hemisphere availlable we can expect to have the same amount of power in half the volume so bass will gain +3db.
If you locate your sub at a junction of 1 wall and floor same thing happen again and you now face +6db in low end, and if you locate corner you then have +9db.
This differents locations will then ( dramatically) change the way you perceive the low end with the same initial freq from a loudspeaker.
And this is without taking ports or other 'details' into account...
So before playing with port stuffing and other loudspeaker parameters i would first try to relocate the loudspeakers for the best results at listening position ( sweetspot) which is the place of interest ( with 'traditional' approach there can only be one spot where sound is at best, other location suffers whatever you'll do). And when doing that you'll probably face an other bass related issue known as 'modal behavior' of the room itself, but each step at a time...
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