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Old 29th April 2008, 02:42 AM   #1
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Default More bass

Hi,

I have been using a pair of Castle Harlechs for several years bi-amped, and I have enjoyed them. What I have done is kidded myself that the bass they give me is what I need - it doesn't!

Freeing myself from the clutches of insanity I now need to invest in a Subwoofer. I am not sure that one off the shelf would do I may be wrong. My listening is music not films (I think that makes a difference?). Room size about 21ft x 11ft. I can spend around 800USD

What would you recommend? Ideas would be gratefully received.

Regards

Brownlow
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Old 29th April 2008, 03:11 AM   #2
tade is offline tade  United States
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I am really happy with my Dayton RS hifi 12" subs; I have two four ohm versions which are wired in series and driven with 250 watts. They will play plenty loud. I like it loud.

If I had that budget, I would buy four of those. Then put a pair of them in two four cubic foot sealed boxes. Stereo bass! Q 0.7 Fb 35hz. Mount the drivers opposing each other to cancel vibrations, and power them with at least 250 watts. preferably 1000 watts. : )
You can always start with two.

The sub
http://www.partsexpress.com/pe/showd...013660#reviews

Wire each pair in series and both pairs in parallel for a four ohm sub. 92 db per watt maybe.
bass is fun!


oooooh, I neglected that you live in the UK...
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Old 30th April 2008, 09:48 AM   #3
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If tapped horns are a bit much, a couple of suitable TLs made from ye olde sonotube work rather nicely: http://www.teresaudio.com/haven/subs/subs.html
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Old 30th April 2008, 01:45 PM   #4
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Thanks for all of your replies.

You know, I thought I would receive a straight forward solution, but I guess (as it's DIY), I probably had no right to think that way.

I think horns are a bit out of my depth and on the large side for my room. I still wanted to keep the Harlechs, I just desired a deeper bass.

Scottmoose, that sub looks quite a challenge, how much does it cost?

Cheers

Brownlow
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Old 30th April 2008, 04:08 PM   #5
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That'd depend on the drivers & amp you decided to use, and also how low you wanted to go. I haven't built a pair myself, though it's a relatively well known idea, & shouldn't be too pricy, even though sonotube is a bit harder to get hold of here in the UK than in the US. Somewhere like Essex tubes should be able to help out. http://www.essextubes.co.uk/home.html Alternatively, just build a column of the same CSA (whatever is required / desired) & job done.
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Old 30th April 2008, 05:22 PM   #6
GM is offline GM  United States
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Default Re: More bass

Quote:
Originally posted by Brownlow

What I have done is kidded myself that the bass they give me..........
And how much bass extension would that be since you ideally need different 'sub' alignments depending on the main's roll off slope and F3?

GM
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Old 30th April 2008, 05:44 PM   #7
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If it's the Harlech S2, it rolls off higher than people expect from a reasonably sized cabinet. ~60Hz IIRC. The original model went a bit lower.
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Old 1st May 2008, 01:39 AM   #8
Thawach is offline Thawach  Thailand
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the room is not big too much. don't think to has a big box in your room.
vent or sealed box is not big too much for your room. it's suitable to use it. the sub for music has the problem very much. the original 10-12" driver that the mass of cone is very much. i saw b&w that they used the Kevlar or carbon fibre cone. the mass of cone driver is not too much. it will be better if u use it with your old speaker. here is the best choice. and i ever found some company in thailand use this driver for music. they told in magazine that this cone is the best for a little speaker.

http://www.hometheaterstore.com/B_W_...T_p/asw750.htm
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Old 1st May 2008, 02:08 AM   #9
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A single 12 inch sub, a 1.25 cubic foot sealed enclosure, is enough to hear up the street with a big enough amplifier. The best part is the simplicity and low cost of such a subwoofer.

I used a Sony P5 4 ohm car subwoofer because of the good low-end response, and got great results and solid, heavy bass..
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Old 1st May 2008, 03:08 PM   #10
Thawach is offline Thawach  Thailand
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Sony P5 4 ohm car subwoofer....LOL.....No have anything is happen. Please to be quiet...EWorkshop1708 i agree that the good low-end response of your. that i show the link that i want to tell about low mass and hard construction of cone. i don't tell him to buy.

and here is new links

http://www.bmm-electronics.nl/Produc...roduct_ID=5229
http://www.youtube.com/watch?v=m86s8tcCU-0


and here a special offer, it may be good for music.

http://www.youtube.com/watch?v=E7Bkrypxzs4&NR=1
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