 
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
|
|
Audio Asylum Thread Printer Get a view of an entire thread on one page |
For Sale Ads |
184.161.120.176
I'm struggling to find a small bookshelf with upwards of 90db sensitivity. I don't get it.
Seems to me that a horn or compression tweeter and efficient 6.5 incher. A Minimal xo and maybe a front port, should be possible. (Even a second woofer off the side to get both to add up for extra dB) Seems apart from klipsch (which I don't trust their specs) and HSU and Davis Acoustics Clint seems like a really rare bird. Even DIY, haven't seen too many projects... Most small bookshelf units go up to 89db.
Is it the reduced inner volume then that dictates things?
I just want something to hang up in the corners of walls/ceiling and feed with a 10w of class D. So can;t go too large. And no I don't want amplified speakers since the volume knob would be too high physically considering where I want to hang these.
oh and less than 400$/pair would be nice.
/paba
Follow Ups:
I don't really know new stuff because I cannot afford it but there are vintage speakers that fit the bill from Pioneer, Sansui, Kenwood (Trio), Coral, Chrysler and Mitsubishi (Diatone). There are a lot of these around and there is not much risk in buying them. When you find them in the thrift stores, they will be $20 Max. There are also vintage models from Philips/Norelco, Magnavox, Jensen, Electrovoice, and JBL that fit the bill. I personally own Sansui, Mitsubishi and Norelco speakers that sound surprisingly good.
Dave
Had you tried the DIY crowd for this woofer and related projects? Even if wood work is not you past time, someone may build to suit! http://www.creativesound.ca/details.php?model=WR125ST
RB-61 from Klipsch are about $500 and 95db efficient (KL-650-THX gets you 97db but it costs $1,500). hard to break the laws of physics though, want lower than 50hz and fill a normal sized room you need to go bigger both in woofer size and enclosure size. DIY you can go with multiple 6-8¨woofers and horn loaded compression tweeters to get 95-98db...T
Jean-Francois Lessard 2A3 PP amp
Marantz 7T Preamp
Klipschorns w/ALK xovers
Sony CX350&CX-230 cd changers
MSB link DACIII w24/96k
MSB digital director
Luxman PD-272 TT
Technics M85 Cassette
My research shows the following.
Hsu Research as mentioned in the posts below, 92db, 55 to 22Hz, 1" horn and 6.5" woofer, $250.
Axiom Audio M3v3, 93db, 50 to 22, 1"D, 6.5" woofer, $350. M22v3 has two 5.3" woofers and costs $150 more.
Energy CB 20, 92db, 60 to 20, $350.
Happy searching.
Bill
HSU makes a speaker with 6.5" woofer and horn tweeter and it's inexpensive too. I don't know how sensitive it is or how low it goes, Hoffman's Law has already been mentioned.I wonder though if in a small woofered system which will be dynamically limited a horn tweeter makes any sense anyway. Domes have sufficient dynamics to track small woofers and according to John Eargle within their dynamic limits good dome tweeters have lower distortion than horns. And capable domes are usually cheaper too.
Edits: 03/24/12 03/24/12
Yes, that system is designed to be mated to a sub..and here is the curve for the 6.5 inch 2 way with horn loaded tweeter. I did not expect anything below 80Hz as the math would be wrong if so.
Very simple. Hoffmans Iron law. In order to have efficiency high in a small bookshelf speaker the bass is sacrificed. It is easy to build bookshelf speakers with an efficiency above 90dB if you are willing to be down 10dB at 50Hz. The compromise is to build a 95dB bookshelf speaker system that rolls off steep below 120Hz and use a pair of powered subs.
Ok but from a 5 or 6 inch bass unit, no one should expect much bass below 60hz anyway. Certainly not in a small bookshelf format even if port or transmission line techniques are used.
thx
paba
You can get 20Hz out of a 5 inch driver and it can be only a few dB down as well but expect the efficiency in the 65dB range. Again, law of physics. I once heard solid 25Hz out of a 40mm driver (of course it was headphones) and again, it is physics. Videoton made a set of minimax speakers which delivered 40Hz bottom (only 3dB down) from a shoebox sized enclosure but once more, they were highly inefficient and could not handle decent power..so the max output was less than 90dB. By the time the 40Hz bottom was beginning to load the room, the driver was out of excursion.
Post a Followup:
| FAQ |
Post a Message! |
Forgot Password? |
|
||||||||||||||
|
||||||||||||||
This post is made possible by the generous support of people like you and our sponsors:
Top of Page ]
[ Contact Us ]
[ Support/Wish List ]
[ Copyright © 2024, Audio Asylum, all rights reserved ]
