room setup suggesion needed


Hi everyone,

 

The question is for gurus of room setup.

Question is if anyone can suggest improvement of the situation where there is not much room for adjustment.

So there you go: 

1) Room conditions

room size 30ft x 30ft

audio wall with the location near centerline

rehearsing distance from the wall 9ft

sound focal point with speakers directed 8ft sound cross path directly at rehearsal point  ( not much room to adjust focal point could be pushed back max 3ft, not too happy about that idea)

speakers spread at 10ft center to center ( could be spread possibly to max 12ft with given wires)

speaker face 2ft off the wall less than 1ft space behind ( could be moved forward and tilted)

wall treatments floor dampening as well, floor standing speakers on spikes.

2) SYSTEM SPEC

speakers JBL 4367

speaker wires FURTECH Douglas 7ft be-wire Rhodium spades 

Amp Pass Labs X250.8

Pre amp Pass Labs XP-12

Phono Pass Labs XP-15

Turntable VPI Classic 1 JMW 10.5  Hana ML

Server Mac mini  

DAC Schiid Modius balanced out

inter connector cable Canari XLR 

system fully balanced 

power cables FURTEH 

 

 

Honestly system sounds really good, but better is enemy of good so is there anything I can do better or is there anything that I'm doing wrong ?

 

Thanks for opinions!

 

 

128x128ssg308

Honestly system sounds really good, but better is enemy of good so is there anything I can do better or is there anything that I’m doing wrong ?

- Unless i missed it, i don’t see any indication of a subwoofer. So, that’s a couple of octaves of music (that the artist intended!) that you never heard yet.

- This is the kind of lumpalicious your room would look like (height assumed since you don’t mention it)...Depending on where you sat, depending on where your speakers sat, sbir, etc, there could be some lousy things happening to the sound (that the ears may have just gotten "used" to). There are threads here with material that covers what you could do, if such lousy things are going on. For example, the subwoofer, if implemented correctly is also a crucial "room treatment" device (it can fix things that conventional treatments can’t fix or the quantity becomes impractical, etc.) Have you ever measured your room? On a positive note, the fact that you have a big room is a good thing...lot of problems become easier to fix (big room guys = smaller problems, small room guys = bigger problems).

@deep_333 

Ok let's clarify some things first, as far as I see you speak numbers and diagrams language so it will be easy for both of us.

You are one of us who use subwoofers, so let's do some logical calculations and see if it makes sense.

1. human can hear from 20Hz to 20KHz but in reality adult person will loose some of the top hearing so maybe 15-17KHz tops.

2. Best subwoofers operating  from 30 Hz to 50Hz, anything less like 25Hz and below will not be sound it will be more like pulse.

3. JBL 4367 speakers  delivering sound from 30Hz to 40KHz

So now, how is your theory of missing subwoofer works exactly when my speakers match frequency of the best woofers out there?

The idea of HIFI stereo was to replicate sound recorded or performed as true as possible and as realistic as the sound itself, so by definition adding components to the system that emitting sounds below hearing range, just to create boom effect makes no sense in my book. When you go to cameral quartet concert there is no amplifiers or speakers you sit and you listen people playing instruments, now those instruments recorded you replicating home on your HIFI it should sound exactly the same, there is no jackhammers under concert floor to create vibrations they do not exist just for the thrill of the spectators.

Now coming to the sound wave shown on your diagram, can you drop the ceiling another foot down to 8' I would love to see what will happen with the bounce of sound after the ceiling was adjusted.

What will happen with 38Hz point, if it will bounce  before 7.25 mark or after.

@ssg308 Wrote:

@ditusa ok I get the concept but execution could be tricky since they weight 157 lb each,

Ok.

The JBL 4367's are great speakers! See my system page, left speaker, I raised 9'' off the floor (the speakers weight 275 lbs each and are 36'' tall, 39'' wide, 20'' deep). I also decoupled the speakers, from the floor with concrete and lead It took two people to put the speaker on the blocks. Raising and decoupling the speakers from the floor improved the sound quality in my system and the cost was low. For more details see here. JBL speaker stands see here.😎

Mike

@ditusa  so what does rising speakers off the ground, and if I bolt the frame to the wall would it do the same effect ?

@ssg308 Wrote:

@ditusa so what does rising speakers off the ground,

Rising the speakers off the floor puts the horn at ear height. Decoupling the speakers from the floor prevents sound transmission from the speakers entering into the floor and floor vibrations entering into the speakers (it’s a two way street).

and if I bolt the frame to the wall would it do the same effect ?

What is important is to break the sound transmission from the speakers and the structure. See here. 😎

Mike