What crossover components do you keep on hand - diyAudio
Go Back   Home > Forums > Loudspeakers > Multi-Way

Multi-Way Conventional loudspeakers with crossovers

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 1st June 2006, 12:58 AM   #1
diyAudio Member
 
Join Date: Aug 2005
Default What crossover components do you keep on hand

So Im getting close to the point where Im going to need some caps and inductors and a few resistors laying around for xover prototyping. I am curious about those of you who have built a few, do you keep a stock of many values or do you model the xover on computer and order just the stuff that you need.
I have no problem bying a bunch of different values but obviously they cant be the high end types, so does anyone here prototype with low grade and then swap in good stuff when finalized? Does quality only affect tonality and the "subjective" stuff, or is the measurable FR and distortion etc.. also affected.

Also does anyone here use variable caps/inductors for prototyping or voicing? Having virtually no experience with truly designing xovers Im trying to approach this with the right tools and methods to minimize time/money wasted

I keep hearing that no matter how well you model it you still need to tweak it (voicing)to get it right. This seems like it would require a wide range of component values to make small changes, of course Im guessing at this.

I still have to re/search for what brands or types of each components are acceptable or need to be avoided, if you are so inclined feel free to provide info on this. It will save me time

Thanks,
  Reply With Quote
Old 1st June 2006, 01:38 AM   #2
lndm is offline lndm  Australia
diyAudio Member
 
Join Date: Mar 2006
Location: nsw
I like to get handfuls of components when they are conveniently and/or cheaply available. If I can get a handful of components of the same value, I know I can make any value from them if necessary.

I like to have a handful of sand cast or carbon power resistors, a handful of mylar caps, a handful of bipolar electrolytics and a range of 14ga inductors.

Often after a tweaking period, replacing the components with decent single values etc. and soldering, can make a welcome difference. It is sometimes a big enough difference to warrant further tweaking, but usually I am happy enough (till next time I feel like tweaking )

I typically replace my mylars with polypropylene caps, my bipolars with motor run caps and the sand cast resistors with carbon (just my preference).

The inductors will probably give the largets issues due to their DCR. Since quality inductors tend to be expensive, I usually make do with the 14ga ones for tweaking. Of course, if used in series with a resistor, the small air cored inductors will be just what you want anyway.
  Reply With Quote
Old 2nd June 2006, 01:06 AM   #3
diyAudio Member
 
Join Date: Nov 2004
Location: sk
Send a message via AIM to ocool_15 Send a message via Yahoo to ocool_15
I usually model with software to get an idea of what ill need, buy those parts and a few extra of similar values. For a mid/tweet crossover I have been using 20ga-18ga inductors. For lower frequencies parts become much more expensive. Inductors in series with a speaker have an Re so therefore will reduce there sensitivity
  Reply With Quote
Old 2nd June 2006, 02:19 AM   #4
Speakerholic
diyAudio Moderator
 
Cal Weldon's Avatar
 
Join Date: Jan 2004
Location: Near Vancouver
I like to buy a cap and coil, one value either side of the one I'm starting with and then after a few years of doing this you have drawers and bags full of the stuff
__________________
Next stop: Margaritaville
Some of Cal's stuff | Cal Weldon Consulting
  Reply With Quote
Old 12th June 2006, 03:44 AM   #5
diyAudio Member
 
Join Date: Aug 2005
Quote:
For lower frequencies parts become much more expensive. Inductors in series with a speaker have an Re so therefore will reduce there sensitivity
So would hand winding large gauge inductors be beneficial, if so what wire gauge does everyone recommend. Is standard magnet wire used or is there something with lower dcr?
  Reply With Quote
Old 12th June 2006, 04:04 AM   #6
diyAudio Member
 
Join Date: Nov 2004
Location: sk
Send a message via AIM to ocool_15 Send a message via Yahoo to ocool_15
Quote:
Originally posted by nunayafb


So would hand winding large gauge inductors be beneficial, if so what wire gauge does everyone recommend. Is standard magnet wire used or is there something with lower dcr?
I seen a ratio given in Loudspeaker Design cookbook, I believe it was 0.4ohm for 8 ohms and 0.2ohm for 4 ohms but I'm not certain.
Magnet wire is whats used. The gauge of wire will depend on you.
Lower gauges
Handle more power
Increase cost
Lower dcr
Require More wire for a given value.

Cored(ferite ect) Inductors are usually cheaper and have a lower dcr but sonically are generally accepted as inferior.

A wonderful site Air Core Calc
  Reply With Quote
Old 12th June 2006, 04:10 AM   #7
diyAudio Member
 
Join Date: Nov 2004
Location: sk
Send a message via AIM to ocool_15 Send a message via Yahoo to ocool_15
Define a large value like 10mH or 2mH or?
  Reply With Quote
Old 12th June 2006, 04:16 AM   #8
cominup is offline cominup  Viet Nam
diyAudio Member
 
Join Date: Apr 2004
Location: hanoi
Send a message via Yahoo to cominup
In crossover circuit, we got notice: "500 turn x 1/4". any one knows "1/4" is 1/4 inches or another meaning?

Do you know how many turns to get an inductor 1.2mH and 4.5mH in air core?

Thanks.
__________________
Ill do it by myself
  Reply With Quote
Old 12th June 2006, 04:17 AM   #9
diyAudio Member
 
Join Date: Nov 2004
Location: sk
Send a message via AIM to ocool_15 Send a message via Yahoo to ocool_15
Quote:
Originally posted by cominup
In crossover circuit, we got notice: "500 turn x 1/4". any one knows "1/4" is 1/4 inches or another meaning?

Do you know how many turns to get an inductor 1.2mH and 4.5mH in air core?

Thanks.
1/4" I am unsure what that is referring to, is it a cored bar inductor? Try my link for air core calculations.
  Reply With Quote
Old 12th June 2006, 04:48 AM   #10
diyAudio Member
 
Join Date: Aug 2005
thanks for the link, more good links on that one.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Electronic parts on-hand for crossover experimentation? tresch Multi-Way 4 22nd June 2009 12:14 AM
Crossover components in the UK inrank Multi-Way 16 14th March 2007 11:23 AM
Crossover components: what should I use? LKS Multi-Way 2 25th September 2003 01:33 PM
crossover components ray Multi-Way 1 11th September 2001 12:17 PM
crossover components zach Multi-Way 1 19th August 2001 07:48 PM


New To Site? Need Help?

All times are GMT. The time now is 09:10 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