diyAudio

diyAudio (http://www.diyaudio.com/forums/)
-   Multi-Way (http://www.diyaudio.com/forums/multi-way/)
-   -   I really have no idea what I'm doing here... (http://www.diyaudio.com/forums/multi-way/118740-i-really-have-no-idea-what-im-doing-here.html)

d to the g 5th March 2008 03:04 AM

I really have no idea what I'm doing here...
 
I acquired some random drivers in a trade here on the forum.

They are:

1" Tympany's

4" Tangband

I'd really like to put them in the cheap/sexy PE curved boxes if at all possible.

Who wants to do me a big favor and run these through one of those fancy software packages that y'all have access to?

These are for the little ones room, he's 7 months old and he mostly enjoys string music and dislikes rock and jazz.

I might be able to trade something, since this is kind of a specialized request.

How about a copy of Ornette Coleman's "Science Fiction", original pressing?

Caferacer 5th March 2008 04:46 PM

I don't have any fancy software but since no one has jumped in I can work up a simple 6db/octave crossover for you.
Put a 1.5mh coil in series with the woofer. This electrically crosses over intentionally low so that it attenuates the rising raw response of the tangband and provides baffle step compensation.
For the tweeter you need two things. First a 4uf capacitor in series for the high pass. You also need an L-pad because the tweeter is naturally louder than the woofer. So in between the capacitor and the tweeter, put a series 5ohm resistor and a 4 ohm resistor in parallell with the tweeter. In other words, right across the tweeter terminals for the parallell resistor.
This is simple but will work and sound balanced. You may need to experiment with polarity of the tweeter.
Hope this helps.

squib 5th March 2008 05:37 PM

a couple of quick WinSID plots
 
2 Attachment(s)
I'm assuming you are looking towards the 0.25 cu ft enclosures. Here are a couple of quick stabs at modeling the 1052 in both vented and sealed 0.25ft enclosures.

Just to state the obvious: you'd get a better bottom end with a 0.5 ft vented cabinet. 0.25 ft gets you pretty close to an "ideal" 0.707 Q for the sealed.

The port for the vented cab is either 1" diam and 4" in length or 1.5" diam and 9 5/8" in length.

Hopefully some of the more experienced folks will chime in...

Good luck,

Squib

squib 5th March 2008 06:08 PM

2 Attachment(s)
Here are the plots for the W4-1052SD in 0.38ft and 0.5ft vented cabs.

The 0.38ft is tuned to 50hz with a 2" diameter, 5" long port

The 0.5ft is tuned to 51hz with a 2" diameter 7 3/8" long port

Caferacer 5th March 2008 06:16 PM

I just realized that your drivers are 4ohm.
All the values in my crossover need to change. The coil and resistors would have to have their values cut in half. And double the size of the capacitor.

d to the g 5th March 2008 09:33 PM

THANKS!

This is exactly what I was looking for, nice cheap and simple.


You guys want me to send each of you 1/2 the record, or do you want to virtual paper, rock, scissors for it?

crazyhub 5th March 2008 09:49 PM

I would at least purchase some more resistors of different values to enhance the chance to get a well balanced speaker. ;)

Caferacer 5th March 2008 09:52 PM

Quote:

Originally posted by crazyhub
I would at least purchase some more resistors of different values to enhance the chance to get a well balanced speaker. ;)
Right. Season to taste.

squib 7th March 2008 10:12 AM

record
 
By all means, send it to caferacer! XO alchemy is more work than WinSID-ery!

Hope you enjoy this project - both building & listening (& re-building)

Bjohannesen 7th March 2008 10:21 AM

You can use the 4" Tang Band in my TABAQ design.

http://coolcat.dk/bjoern/TABAQ_TL_for_TB.pdf

Hi from
Bjorn


All times are GMT. The time now is 08:42 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio


Content Relevant URLs by vBSEO 3.3.2