Smallest 2-way for 45 Hz output?

[bfg9k]

I'm interested in maybe DIY'ing a pair of speakers for my office computer for MP3 playback.

What's the smallest enclosure I could get away with to get bass response down to 45 Hz or so? I was thinking of using the Adire Extremis in a small sealed box with a Linkwitz transform circuit, but I suspect I could make things simpler (and cheaper) with a ported enclosure and the 'right' driver. Any suggestions?

[Nemophyle]

theses two puppies are what you are searching for :

Hi Vi D5G

Hi Vi D5.8

they may be a little difficult to cross over though, due to the cone's shape they have a response bump in the 1k-2k range, that you might have to notch.

talking about bass response they go as low as 40hz in a 5-7 liters bass reflex enclosure

[69stingray]

bfg9k-

How is everything in Mass today?

I would look at either 7" Dayton Aluminum Driver or Dayton's 5.25" Aluminum Driver


7": F3 = 40 Hz with 0.697 ft3 (19.73 L) ported box
or
7": F3 = 45 Hz with 0.567 ft3 (16.05 L) ported box.

5.25": F3 = 45 Hz with 0.5 ft3 (14.15 L) ported box.

The 5.25" has plenty of examples of crossover networks for use with Tweeters.

Here is an example:
http://www.partsexpress.com/projects...ylum/index.htm

[Zaph]

You might consider the Seas L15. It's good for a 45hz F3 in a .38 cu ft box. As far as 5.5" drivers go, I have not seen one with better bass than this. It's relatively deep, but it does so in a normal size enclosure and has comparitvely low distortion too.

[andy2]

I recently built one of Troels monitor using Seas W15 and Hiquphon drivers and they sound really nice with decent bass.
Here is the link:
http://www.troelsgravesen.dk/W15.htm

It's a little expensive but it is really worth it since you could try some other inexpensive design and it turns out not to be what you want and end up costing even more money.

Besides, Troels is really a nice guy who will answer all your question.

[bfg9k]

Thanks for the responses everyone, I really appreciate it! I've been looking at some of the small speakers over at the zaphaudio.com website too.

I think the best route will be a sub/sat system so I don't overwhelm the top of my desk with speakers. I think I will go lurk in the subwoofer section for a while...

Oh, and 69stingray, the weather in MA is much improved since the weekend

[richie00boy]

I built a 4 inch mini monitor that went down to 45Hz. You didn't say how loud you wanted it though.

[DanWiggins]

If you want to go the Extremis route, try 12 liters ported, and tune to 40 Hz. Should get you an F3 of 45 Hz, and is a quite small box.

Dan Wiggins
Adire Audio®

[gcm908]

I have heard the seas setup that zaph suggests and it is a great driver at a great price...but

what about the scan-speak 15w revolator series of woofers 3x the price but...

huge xmax and 30hz res freq...

Does anyone know how they compare?

thanks, gcm908