increase bass without adding subwoofer

[Zenn]

4ch amp got 4channels, front left and right, rear left and right. if running front speakers and one sub, they will combine the rear 2 channels into one (called bridge mono) to run the sub, and the front ones run stereo as per normal.

if u have 2ch amp only, its advised to let it run just the sub. the front speakers u can drive from your HU internal power.

 

[frank118]

Cheapest way I think is just get a midbass component set for front...around RM300 you could get a 6" Kole with tweeters or American Sound AS. They sound decent with enough bass and sharpeness for the money.

Unless you have a really good money to burn then its a whole different story.

 

[mnkh0027]

if you have a good pair of 6" midbass lying around, you can try building a bandpass sub using the pair of 6". very likable, punchy bass and the enclosure is small. my dad has been running a pair of 6" mohawk in a bandpass enclosure for the past 8-10yrs.

 

[cacin]

if you have a good pair of 6" midbass lying around, you can try building a bandpass sub using the pair of 6". very likable, punchy bass and the enclosure is small. my dad has been running a pair of 6" mohawk in a bandpass enclosure for the past 8-10yrs.

hi bro,
do you have details on the box dimensions?
bandpass at what freq? 4th order? isobarik mount of the mids?

interesting idea.... probably by doing this I can have some trunk space back? :)

 

[mnkh0027]

isobaric 6th order bandpass. it uses 2 drivers facing each other in a box.

Bump:
I extracted this from a diy project site. Since it's easy enough to understand, I'll just cut and paste to save time:

Why Isobaric?
I'm building a 6th order bandpass subwoofer here, they conventionally are arranged as follows:

However in an isobaric configuration the baffle has two speakers mounted on it, they are arranged face to face effectively forming an enclosure with a small cavity of air between the two drivers.

The drivers therefore must operate out of phase with each other (or else they would cancel out each others motion).
In an isobaric configuration the layout is like this:

Disadvantages

• The cost of drivers is doubled as you need 2 rather than 1.
• Efficiency of the system is down by 3dB as compared to a single driver due to the added cone mass.
• When you compare isobarics to a system which houses two drivers each in their own enclosure, this system would actually be 6dB less efficient.

Advantages

• Distortion is reduced.
• Sonic bass response is improved.
• Bass is claimed as being tighter, faster, more accurate and more pure.
• Best of all doing so halves the Vas of the driver, so the enclosure size required is halved also. Meaning we can build a really small subwoofer. Being small is a great benefit, the sub won't take over your lounge or car boot which is a bonus!
• Panel sizes are smaller, so it's easier to build a really sturdy box, i.e. one that is less likely to resonate.

So in a nutshell you would choose an isobaric configuration where:

• Size is a big issue.
• When you want the box to be very small.
• Where more accurate bass is important
• And if you have a hefty amplifier with plenty of juice to spare.

 

[frank118]

Wow...that was interesting...and educational..thank you sir.