diyAudio

diyAudio (https://www.diyaudio.com/forums/index.php)
-   Multi-Way (https://www.diyaudio.com/forums/multi-way/)
-   -   Matching 12 inch woofer with 4 inch mid (https://www.diyaudio.com/forums/multi-way/308697-matching-12-inch-woofer-4-inch-mid.html)

awdtalon21 7th June 2017 01:25 AM

Matching 12 inch woofer with 4 inch mid
 
Should I have gone with a bigger mid range speaker to match with the woofer, i'm not liking the way its sounding around the 400hz range.

Using minidsp to set crossovers

Dayton Audio DS315-8 12 - 30hz to 200hz 12/db
Peerless by Tymphany NE123W - 400hz to 3000k 12/dx
Dayton Audio RS28A-4 - 4000k 12/db

GM 7th June 2017 02:36 AM

Sounds how?

GM

boswald 7th June 2017 02:54 AM

First try something to make a big difference. Move the mid to 800, that should let the 4" get loud without strain, then try backing down, see what you can get away with. There's a happy spot somewhere.

j.michael droke 7th June 2017 03:30 AM

freqency response curve, Tymphany
 
Quote:

Originally Posted by awdtalon21 (https://www.diyaudio.com/forums/multi-way/308697-matching-12-inch-woofer-4-inch-mid-post5100720.html#post5100720)
Should I have gone with a bigger mid range speaker to match with the woofer, i'm not liking the way its sounding around the 400hz range.Using minidsp to set crossovers:
Dayton Audio DS315-8 12 - 30hz to 200hz 12/db
Peerless by Tymphany NE123W - 400hz to 3000k 12/dx
Dayton Audio RS28A-4 - 4000k 12/db

Hi there a: Looked up the frequency response curve published by Tymphany, available at Parts Express, Part Number 264-1128, and nothing jumps out as out of bounds at that frequency. Since the NE-123w will reach 200hz reasonably flat to 250hz, maybe try adjusting crossover for 6db slope from 400hz down on the mid range and the Dayton woofer slope 12db down from about 300+-. An overlap sometimes helps smooth response. ...regards, Michael

wmd916 7th June 2017 09:00 AM

Quote:

Originally Posted by j.michael droke (https://www.diyaudio.com/forums/multi-way/308697-matching-12-inch-woofer-4-inch-mid-post5100782.html#post5100782)
Hi there a: Looked up the frequency response curve published by Tymphany, available at Parts Express, Part Number 264-1128, and nothing jumps out as out of bounds at that frequency. Since the NE-123w will reach 200hz reasonably flat to 250hz, maybe try adjusting crossover for 6db slope from 400hz down on the mid range and the Dayton woofer slope 12db down from about 300+-. An overlap sometimes helps smooth response. ...regards, Michael

I agree. My guess, and only a guess was that the OP is experiencing a dip between the woofer and mid given his crossover frequencies. Likely one between the mid and tweet too.

I suggest a small investment in a microphone and make some measurements. There could be many things going on considering he didnt give much in the way of any EQ or system description, enclosure details, what he perceives he's missing, etc, etc, etc.

-Wes

bentoronto 7th June 2017 09:07 AM

Quote:

Originally Posted by wmd916 (https://www.diyaudio.com/forums/multi-way/308697-matching-12-inch-woofer-4-inch-mid-post5100927.html#post5100927)
I suggest a small investment in a microphone and make some measurements.

Without measurements you're just guessing.

Even the mic in your laptop can provide the help you need, using REW. Simply check the intact speakers and then each driver individually.

It should be eye-opening.

B.

John Busch 7th June 2017 04:18 PM

How are you loading the 4"? I have used it in several designs. Works well as a mid range in a sealed and stuffed 4.5-6 liter sub enclosure. QTC' around .64 - . 68. Great driver! If you take it up high a simple trap is needed to flatten the rising response.

DougL 7th June 2017 05:43 PM

Have you taken baffle step into account?
The geometry of your box (I'm assuming its not OB) can have a profound affect.
Also, what are your SPL goals? if they are modest, 400 Hz may be too high a crossover point.
I agree with the other posters. You will never know until you measure.


All times are GMT. The time now is 05:28 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 17.65%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio

Wiki