My Natalie P project (Completed)

**brucek** · **07-15-06, 02:39 PM**

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any recommendations?

My understanding is that many here (including Sonnie), recommend and use the quite inexpensive Creative Sound blaster MP3+ USB Sound Card.

How did you take the response of the speaker indoors? Why not cart that computer outside?

brucek

**Exocer** · **07-15-06, 05:58 PM**

With my desktop comp. I'll get the sound blaster card asap and report back...I am not about to cart it downstairs and unplug all those wires for this

Too much of a headache

**Exocer** · **07-16-06, 07:50 AM**

Just a little thought...maybe moving the speakers to the center of the room away from all boundaries and taking a nearfield measurement would tell me what I need to know.

**brucek** · **07-16-06, 08:07 AM**

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maybe moving the speakers to the center of the room away from all boundaries and taking a nearfield measurement would tell me what I need to know

Well, not completely. Certainly the size of the room has an effect. In addition REW has to be set up in such a way so that unfortunately the lower end response isn't useful.

John M says it best when he comments:

"You need to move the loudspeaker as far from room boundaries as is practical (i.e. put it in the middle of the room), make the measurement, then go to the impulse response graph and set the gate time to exclude any reflections (evident as spikes on the response, more easily seen if you select the Full Range Energy-Time curve view). The reflection-free period is generally pretty short, if you are measuring the response at 1m from the speaker the reflection free period is a little more than the time sound takes to travel to the nearest boundary and back. Usually the floor is the nearest boundary, if your mic is 1m from the floor and the speaker is more than 1m from any other boundary the reflection-free period will be about 6ms. The problem with the short gate time is that it puts a limit on the lowest frequency at which you see meaningful response information and the frequency resolution of the response, for a 6ms gate time this figure is about 167Hz (1/gate time) which means this approach is only useful for full range measurement and doesn't tell you anything about the low frequency response."

brucek

**Exocer** · **07-16-06, 07:00 PM**

I am not so sure I follow the point of what JohnM is saying...or his instructions

I did however take some nearfield measurements in my room and things still look far from flat but the nulls are gone...and I am still getting the steap bump in the upper frequencies...I expected my carpet to take care of that

Individually tested ~1m from SPL meter as far away from any boundaries as possible, Red is the left speaker and green is the right speaker.

**brucek** · **07-17-06, 05:40 AM**

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I am not so sure I follow the point of what JohnM is saying...

He's just saying to reduce the amount of relections in the room you need to reduce the time REW listens to the sound it samples. By doing so will reduce the abilty to get a response in the low frequencies (long wavelengths).

Quote:

things still look far from flat but the nulls are gone...and I am still getting the steap bump in the upper frequencies

Something else is wrong here.

brucek

**Exocer** · **07-17-06, 06:09 AM**

Well, the mic was directly on the level of the tweeter. That may have something to do with the hump? I really need to just get over myself and take the comp downstairs or wait for the SB to arrive.

**FlashJim** · **07-20-06, 04:03 PM**

You could have saved a lot of time and money if you had just waited for these to go on sale at Parts Express. $39 for the pair!

**Exocer** · **07-20-06, 05:18 PM**

**Sonnie** · **07-21-06, 01:22 AM**

I wonder will they personalize the grill covers since no one would ever believe I've read that book... maybe they could put "History of Pink Floyd" on there for me. That's not a bad price at all.

**FlashJim** · **07-21-06, 09:21 AM**

To be perfectly honest, I think it's a cool idea.

I guess if you built a little bit bigger speaker you'd have to silk screen "War and Peace" on it.

**Exocer** · **08-02-06, 05:58 PM**

New Stands!

**F1 fan** · **08-02-06, 07:30 PM**

Speakers and stands look great, but I think that Dipole sub on the floor needs some more work .

**Exocer** · **08-02-06, 07:38 PM**

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F1 fan wrote:

Speakers and stands look great, but I think that Dipole sub on the floor needs some more work .

Lol!. Good laugh.

**FlashJim** · **08-03-06, 10:09 AM**

lol

Man, I am SO jealous. I haven't even started on my mains yet. Everything looks great!

**Sonnie** · **08-03-06, 03:21 PM**

Yeah... I've never seen an IB quite like that one before....

Nice work Robert... very nice!

Now... what we gonna do with all those wires?

**FlashJim** · **08-03-06, 03:24 PM**

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Sonnie wrote:

Now... what we gonna do with all those wires?

Cut them off and go wireless! That's how it's done, right?

**Exocer** · **08-03-06, 04:11 PM**

Nice one guys

...you guys always seem to find something wrong with my pics...i'll get all of you back one day!

But seriously, I can use a few tips on neatening up these wires...I don't even know where to begin..

**FlashJim** · **08-03-06, 04:38 PM**

Build a big *** entertainment center to house everything - only to have it not fit everything later on. Wait, that's what I did.

Split loom tubing, perhaps?

**Sonnie** · **08-03-06, 07:57 PM**

Oh boy... if you could see behind my cabinet. I think that's one reason I use a cabinet with a back on it... so I can hide all the wires.

You could use your size 13 shoes to stuff the excess wire in...

I know... we are soooo bad..

**Exocer** · **08-04-06, 10:45 AM**

Lol sonnie.. I miss being able to hide these wires.

Jim thanks for the awesome suggestion.

**khellandros66** · **08-04-06, 02:46 PM**

Exocer those are absolutely amazing, are you even gonna stain them?

~Bob

**FlashJim** · **08-04-06, 04:34 PM**

Quote:

khellandros66 wrote:

Exocer those are absolutely amazing, are you even gonna stain them?

~Bob

Shoot, clearcoat 'em and enjoy them! They look good as is.

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