Options for my library/ listening room

[TinEaredGaloot]

Hello. After researching full range DIY I found this site to have some incredibly experienced members, thus I decided to join. My library is rectangular, approx 15 ft L x 10 ft W. 12 ft ceiling, hardwood floors. Listening position, opposite the shelves (long end). Gear: 3 WPC SET mated to ADS L 570's, swapping out intermittently with Dynaco A25's. Musical taste: Brian Bromberg, Miles, Botti, etc. From what I have researched (please keep in mind i'm green as tree bark...) this room is too small for a BLH. Any ideas on what kind of synergy shelf mounted BR's or sealed would render in this space? With this idea in mind I'm also aware of the contingent need for a sub. Thanks, TEG

[planet10]

Frugel-Horn Mk3 should work fine in that room. FE126En (treated or not) would be suggested given your available power.

dave

[Monte Verdi]

Hello,

Have you considered a Full Range Open Baffle set-up with subs? Excellent for smaller spaces with good depth and transparency without the cabinet box coloration's

Ramon.

[picowallspeaker]

Well (hi !) I believe truth is at the end of your passage .
You can built some 1 cubic foot closed boxes to accomodate on the library.
Those will have some modern subwoofer drivers from 6 to 10" and brands like Tang Band or Seas . Connecting them in series-parallel will give a proper load to the external amplifier ,which will be provided with an active crossover ( set the low cut as low as possible ) and be able to provide at least 300 W on a 4 Ohm load (look for class D modules) .Putting an highpass filter in your SET by changing input capacitor value won't take much time .
You'll then obtain a system capable of going very low ,and putting the sub cabinets at different heights and levels will help you to get rid of room modes and having directivity in bass ..
bye !

[planet10]

Originally Posted by Monte Verdi

Excellent for smaller spaces with good depth and transparency without the cabinet box coloration's

OBs really need a pretty big room work and to minimize their inherent colourations.

It is possible to build a very low colouration box.

dave

[TinEaredGaloot]

decided to post a poor photo from the listening position..

[planet10]

Putting speakers into the shelf unit would be convienient but would likely compromise the sonics. A speaker could be designed to fit in where the exsiting ones are.

I've actually just been tasked to design a Twin EL70 enclosure for something similar.

If you won't trip over them something that is out from the shelves should give better performance.

dave

[head_unit]

Originally Posted by planet10

Putting speakers into the shelf unit would be convienient but would likely compromise the sonics. A speaker could be designed to fit in where the exsiting ones are.

I've actually just been tasked to design a Twin EL70 enclosure for something similar.

If you won't trip over them something that is out from the shelves should give better performance.

dave

Yes, true, but ugly and inconvenient. I like the "A speaker could be designed to fit in where the existing ones are" idea much better. But have them stick out a few inches and maybe put absorptive felt on the front, to minimize effects from the bookcase.

[bentoronto]

Here's my analysis:

you will end up with two small satellite speakers on shelves. The more centered you can locate the mixed-bass woofer between them, the smaller the compass the satellites need to handle. The less bass in the satellites, the smaller they will be* and the better will be their treble.

If the bass is favourably located, crossing over at 200 Hz is OK and easy to find small drivers to work very well north of there. If woofer location is as terrible as could be, 90 Hz is about as high as most people would recommend (but I'd say 130 Hz).

Simple as that.

* A single driver might work fine because of 400,000 principle; might need no enclosure to speak of. Hard to do it any way but with electronic crossover. Might end up quite good.

[Bluto]

bentoronto- headunit.

Thanks for your input on this. I've got a similar situation as Tineared galoot.

I've been fighting for over 2 years as to a serious build because of it.

If I want the speaks I'd prefer the bookcases have to go. They are needed.

I see no designs for an actual bookcase speaker that has to fit right up against the wall and will yet give me both SQ I want as well as volume for occasional 'Outlaw' moods prompted by 60's/70's Fantasies. Normal listening is Blues/Jazz & occasional Classical.

I truly love the mids I've experimented with in 3-5" FR but simply need more juice.

Ideas both of you expressed may work well for both Tin ear and I if I could get the volume needed. My room doubles for 2 channel & HT. A built in eliminates toe in and we don't have much of a 'sweet spot' as is.

Of late my thoughts have gone to thinking 2 small speakers on each bookshelf on different shelves (Ikea bowl idea comes to mind) might give me both the fidelity and volume I seek and allow large enough sound stage.

Alpair, CSS FR125 & Hi Vi 3/4bn all seem candidates & would adapt well for CC as well as surrounds.

I love big speakers but thinking that needs to be relegated to basement dedicated 2 channel room.

Thoughts?