For unique reasons, I need to build a sub-woofer into a space that is 7 1/2"H by 18 1/2"W by 17"D that will only allow front firing. Because of the reduced space I will have to build a custom acoustic suspension box. Because of limited resources I will cannibalize an RCA WF60R, 60 watt sub to use the amp. I can fit a 6" speaker. I know I will not get wall shaking boom... all I want is to bring some depth to my Realistic Minimus 7, 8ohm speakers in a small living room.
2 questions:
1- Should I use one or two 6" speakers and why?
2- Any recommendations on REASONABLY PRICED speakers?
I can build the box but am a real novice on audio. Any help would be GREATLY APPRECIATED!
2 questions:
1- Should I use one or two 6" speakers and why?
2- Any recommendations on REASONABLY PRICED speakers?
I can build the box but am a real novice on audio. Any help would be GREATLY APPRECIATED!
Hi,
That gives you about 0.9cuft internal volume. TBH I
suspect you want a budget rather than ideal solution.
Its not difficult to add bass to Mimimus7's.
I'd suggest two of these (look like Monitor Audio drivers) :
BS28-6P 6" Aluminum Cone Woofer 8 Ohm Shielded
(Why two ? The box volume indicates two would be much better.)
In your sealed box will be fine, but you could add a vent tuned to 40Hz,
around 2" diameter and 4.5" length, which is more about power handling.
FWIW the ideal solution is probably :
Tang Band W69-1042J 6"x9" Subwoofer
In your box vent tuned to 33Hz (2" diameter x 7" length).
(or 2.5" diameter x 12" length).
rgds, sreten.
Lightly stuff your sealed box, line the walls of a vented box.
That gives you about 0.9cuft internal volume. TBH I
suspect you want a budget rather than ideal solution.
Its not difficult to add bass to Mimimus7's.
I'd suggest two of these (look like Monitor Audio drivers) :
BS28-6P 6" Aluminum Cone Woofer 8 Ohm Shielded
(Why two ? The box volume indicates two would be much better.)
In your sealed box will be fine, but you could add a vent tuned to 40Hz,
around 2" diameter and 4.5" length, which is more about power handling.
FWIW the ideal solution is probably :
Tang Band W69-1042J 6"x9" Subwoofer
In your box vent tuned to 33Hz (2" diameter x 7" length).
(or 2.5" diameter x 12" length).
rgds, sreten.
Lightly stuff your sealed box, line the walls of a vented box.
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So would I, for a slight increase in efficiency and peak output since a 6" driver may be marginal to begin with.
Guys, thank you for responding. You are giving me food for thought and a starting point. Any other thoughts would still be appreciated. Again, thank you.
Sreten, I am 73 years old and old fashioned; brought up at a time when we used complete words. What is TBH and FWIW?
Rulo, they are acronyms from the internet age (or perhaps dating back to bulletin boards).
TBH = To Be Honest
FWIW = For What It's Worth
Basically just ways of saving on typing 🙂 Not as bad as the textspeak we see from mobile phones!!!! I use them all the time.
Some others you may come accross.
IMO = In My Oppinion
IMHO = In My Humble Oppinion
LOL = Laugh Out Loud
There are plenty of others, but once you know they are acronyms it can be easy to work out from the context. If not just google what does acronym xxx stand for (where xxx is the acronym).
Tony.
TBH = To Be Honest
FWIW = For What It's Worth
Basically just ways of saving on typing 🙂 Not as bad as the textspeak we see from mobile phones!!!! I use them all the time.
Some others you may come accross.
IMO = In My Oppinion
IMHO = In My Humble Oppinion
LOL = Laugh Out Loud
There are plenty of others, but once you know they are acronyms it can be easy to work out from the context. If not just google what does acronym xxx stand for (where xxx is the acronym).
Tony.
Thank you. Since you're obviously a patient man let me push you limits. I understand a ported box would probably bring deeper bass and require less power, but, my understanding was that an acoustic suspension box would be "smoother" across the spectrum. True?
Speakers are all about tradeoffs 🙂
What the Sealed enclosure will give you is the best transient response. That is The speaker will return to rest after an excitation the most quickly in a sealed enclosure. This come at the cost of bass extension.
The ported box will give you the bass extention, but at the cost of inferior transient response. There are many possibilities for tuning that response though, and some will be better than others.
The compromises that one person can live with another may not be able to. It is a personal thing, which one really has to find out on their own (either by experimenting, or by listening to different types of systems created by others).
Tony.
What the Sealed enclosure will give you is the best transient response. That is The speaker will return to rest after an excitation the most quickly in a sealed enclosure. This come at the cost of bass extension.
The ported box will give you the bass extention, but at the cost of inferior transient response. There are many possibilities for tuning that response though, and some will be better than others.
The compromises that one person can live with another may not be able to. It is a personal thing, which one really has to find out on their own (either by experimenting, or by listening to different types of systems created by others).
Tony.
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Thank you Tony. I think I'll stick with the sealed enclosure which would be easier for me to build. Any suggestion as to the fill material I should use and where to buy? Thank you again for your help.
Hi,
If you go with the drivers I suggested and a sealed box, just
stuff it with the contents of a very cheap polyester pillow.
rgds, sreten.
If you go with the drivers I suggested and a sealed box, just
stuff it with the contents of a very cheap polyester pillow.
rgds, sreten.
Assuming your measurements are overall outside dimensions, and 3/4" material for construction, you're looking at approx .9 ft^3 (26 liters) so either of sreten's suggestions are worth consideration.
For a small box & driver solution to "sub" woofer puzzle, I've always preferred sealed, but that's just one man's opinion.
For fill material, loose fibre dacron ( e.g. pillow fill) from a sewing crafts store should be fine.
For a small box & driver solution to "sub" woofer puzzle, I've always preferred sealed, but that's just one man's opinion.
For fill material, loose fibre dacron ( e.g. pillow fill) from a sewing crafts store should be fine.
Hi,
FWIW IMO IMHO = In my honest opinion. (Humble adds nothing to IMO.)
rgds, sreten.
FWIW IMO IMHO = In my honest opinion. (Humble adds nothing to IMO.)
rgds, sreten.
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^fair enough. I always thought that adding humble implied that one was open to other possibilities, ie it is not necessarily a strong opinion. But we are digressing. 🙂
Tony.
Tony.
FWIW, net lingo only lists 'humble': NetLingo The Internet Dictionary
You searched for: imho
Search Results
IMHO - In My Humble Opinion
Online jargon, also known as text message shorthand, used in texting, online chat,...
GM
You searched for: imho
Search Results
IMHO - In My Humble Opinion
Online jargon, also known as text message shorthand, used in texting, online chat,...
GM
You guys have been a special blessing to my ignorance. I will purchase the two (BS28-6P) 6" speakers SRETEN recommended. The specifications state it calls for .23 ft3 sealed enclosure so I suppose that for two I should make it .46 ft3. My only question left is how to calculate the volume occupied by the amp inside. Or should I put the amp in a separate box and just run the cable in? Once installed, the only thing visible will be the front of the speaker box so a separate amp box would not be an eyesore. Again, thank you for your interest and time.
Hi,
The two drivers will be fine in the originally described 0.9 cuft box.
Don't worry about the amplifier volume or the drivers volumes.
Sealed boxes are very flexible, you will get tight, dry bass.
There is no advantage to halving the box volume here.*
rgds, sreten.
* only makes sense for use as a bassmid in a sealed box
in an AV system that will be high passed at around 80Hz.
The two drivers will be fine in the originally described 0.9 cuft box.
Don't worry about the amplifier volume or the drivers volumes.
Sealed boxes are very flexible, you will get tight, dry bass.
There is no advantage to halving the box volume here.*
rgds, sreten.
* only makes sense for use as a bassmid in a sealed box
in an AV system that will be high passed at around 80Hz.
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Hi,
True a digression. Seems I'm wrong. I use IMHO to indicate
a stronger belief than in IMO, being honest. Seems that I've
misunderstood its common usage, you live and learn.
rgds, sreten.
Not a reasonable price but will work fine in that box: Aurum Cantus AC-200MKII 8" Carbon Fiber Sandwich Woofer
I have a 10 that will work in that box. May even have an extra if you want me to check. About $80....
I have a 10 that will work in that box. May even have an extra if you want me to check. About $80....
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