I Need More Help To Understand

Tom,

I deeply appreciate you're taking the time from what must be your very busy schedule to help me with this! I would definitely like to try this experiment, and I will if you'll first help me comprehend some things that are apparently self-evident or self-explanatory to you, but are lost on me, ok?

1) You said "Take your rooms longest dimension, find the frequency where that distance is 1 / 2 wl (sound travels about 1132 feet /sec)."

My audio room is 15.5' L. So if I'm understanding what you're asking me to do. The frequency I want is 37.5Hz whose wavelength is 30' and hence was a 1/2 wl of 15' So is 37.5 the wavelength I'm looking for in #1?

2)Look for 12 or 15 woofer with a low Fs and large Xmax (like 10mm or more. DO NOT consider power handling, brand or studly looks.

I have a pair of 15” Woofer that were built to spec by TC Sounds for Jon Lane Design. These have cast four-legged frames, 3.5" flat wire coils, heavy copper Faraday motors with underhung geometry and precision machined gaps, vented poles, hard paper cones, cloth surrounds, flat lead-in wires woven into the rear suspension. Xmax is 10+ mm. The rest of the specs are:

NomR: 12 ohms
Revc: 9.2 ohms
BL: 25.75 TM (!)
SPL: 94.25 dB
Qms: 6
Qes: .27
Qts: .25 ik
Vas: 355 litr.
Cms: 350 uM/N
Mms: 130 Gm.
Fs on these is under 25Hz.

Will these suffice?

3) Model each of these in a sealed box of a volume you would accept in your room (some people don’t mind a refrigerator in the corner).

Well I don't really want refrigerator sized boxes, but would 4'x3'x2' be sufficient enough or will they need to be bigger? After that I'm DIY illiterate and don't know how to even begin modeling these? Heck I even have to pay someone to build the cabinets to put them in.

4) Pick the one that gives the low corner knee nearest your theoretical room number and nicest shape. If you have a giant volume, try two drivers.

This is where I start getting really lost! I have no idea of what the "Low corner knee is" and what is the "theoretical room number" you're refering to? I suppose you can see how it gets even more confusing for me after that. I still appreciate your trying to help me, though..

Thetubeguy1954 (Tom Scata)

SETriodes Forum -- Central Florida Audio Society -- Fullrange Drivers
==============================================================
"The man that hath no music in himself nor is not moved with concord of
sweet sounds is fit for treasons, stratagems and spoils."
- William Shakespeare
Thetubeguy1954 (Tom)

Central Florida Audio Society -- SETriodes Group -- Space Coast Audio Society
Full-range/Wide-range Drivers --- Front & Back-Loaded Horns --- High Sensitivity Speakers

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Follow Ups Full Thread

Topic - Is Replicating Bass Even Possible In The Average Room? - thetubeguy1954 14:00:42 10/18/10 (31)

RE: Is Replicating Bass Even Possible In The Average Room? - IEaudiodude 06:08:43 11/10/10 (0)

of course - Bruce from DC 16:25:51 11/09/10 (0)

It is but not with OB bass systems - Steyr 07:27:28 10/21/10 (3)

RE: It is but not with OB bass systems - Drew Eckhardt 15:30:22 10/21/10 (0)

RE: It is but not with OB bass systems - Inmate51 07:50:52 10/21/10 (1)

RE: It is but not with OB bass systems - Steyr 07:55:35 10/21/10 (0)

RE: Is Replicating Bass Even Possible In The Average Room? - Inmate51 19:31:05 10/20/10 (0)

As An Observation, Looking at Your Rig - Not With Your Speakers... - Doug Schroeder 07:09:14 10/19/10 (8)

RE: As An Observation, Looking at Your Rig - Not With Your Speakers... - thetubeguy1954 08:33:04 10/19/10 (7)

Well Then, I Guess You Have Heard Bass in Your Room... - Doug Schroeder 14:17:54 10/19/10 (1)

What about bass "quality"? - Robert C. Lang 17:32:34 10/19/10 (0)

RE: As An Observation, Looking at Your Rig - Not With Your Speakers... - tomservo 12:16:31 10/19/10 (3)

I Need More Help To Understand - thetubeguy1954 08:29:42 10/20/10 (2)

RE: I Need More Help To Understand - tomservo 09:45:35 10/20/10 (1)

Thanks Tom. I Have A Couple Of More Questions, Ok? - thetubeguy1954 13:34:03 10/20/10 (0)

consider the headphone - badman 09:12:45 10/19/10 (0)

Yes Tom - morricab 05:02:59 10/19/10 (0)

Sure it is - Bill Way 22:40:07 10/18/10 (0)

Yes!! - henrybasstardo 21:56:51 10/18/10 (0)

The Problem with Small Rooms - Brian A 18:42:06 10/18/10 (0)

Think about what you are asking - Robert Hamel 18:28:04 10/18/10 (0)

Yes you can if you just follow some simple rules. - Mr. Dick Hertz 16:44:59 10/18/10 (3)

That Was Good {nt} - thetubeguy1954 08:37:09 10/19/10 (0)

RE: Yes you can if you just follow some simple rules. - IEaudiodude 16:52:14 10/18/10 (1)

You betcher ass bass like bass! nt - Mr. Dick Hertz 19:43:19 10/18/10 (0)

Another thing to consider is that many of us do not... - DeKay 16:31:44 10/18/10 (1)

Good point..A well placed adjacent room can serve as a bass trap - Robert C. Lang 17:50:20 10/19/10 (0)

I think it depends on how much distortion you find acceptable. - genungo 16:02:13 10/18/10 (0)

RE: Is Replicating Bass Even Possible In The Average Room? - tomservo 14:54:20 10/18/10 (0)

RE: Is Replicating Bass Even Possible In The Average Room? - Iron Knee 14:39:16 10/18/10 (0)

Doubtful........... - kavakidd 14:18:31 10/18/10 (0)

Follow Ups

I Need More Help To Understand - thetubeguy1954 08:29:42 10/20/10 (2)

RE: I Need More Help To Understand - tomservo 09:45:35 10/20/10 (1)

Thanks Tom. I Have A Couple Of More Questions, Ok? - thetubeguy1954 13:34:03 10/20/10 (0)

I Need More Help To Understand

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