Passive crossover advice |
Post Reply | Page 12> |
Author | ||
Jack1991
Registered User Joined: 05 February 2020 Location: Bristol Status: Offline Points: 491 |
Post Options
Thanks(0)
Posted: 12 February 2020 at 1:29pm |
|
Hi i wondered where people get there passive crossovers from? Im UK based. They seem quite expensive the pre-built ones and there doesnt seem to be much choice online. I saw some people make them thereself but that is far beyond my knowledge right now to do that. Surely most buy pre-built anyway id imagine??
Its a Mid-Top speaker im going to build. 3.5k crossover point 8ohm 8" mid driver with a cd horn tweeter Any advice or pointers would be great thanks.
Edited by Jack1991 - 12 February 2020 at 2:08pm |
||
dlyxover
Old Croc Joined: 14 June 2007 Location: Liverpool Status: Offline Points: 1508 |
Post Options
Thanks(0)
|
|
if your up for the challenge build your own
|
||
In the Truth there is no news, and in the News there is no truth
|
||
Jack1991
Registered User Joined: 05 February 2020 Location: Bristol Status: Offline Points: 491 |
Post Options
Thanks(0)
|
|
I would love to, but i would need a detailed, simplified, step by step process to follow. Like a "crossovers for dummies" guide or something. And i imagine it would end up costing more than buying a pre built one once id bought all the tools/bits needed Edited by Jack1991 - 12 February 2020 at 3:09pm |
||
Chris Grimshaw
Registered User Joined: 10 September 2018 Location: Sheffield Status: Offline Points: 281 |
Post Options
Thanks(0)
|
|
Some of the tools are pretty cheap. REW and XSim do the job just fine. However, you'll also need a measurement setup and the knowledge on how to use it effectively. IMO, pre-built crossovers are a waste of time unless they're intended for the exact speaker you're building. Different speakers have different impedance and frequency curves, and therefore each needs to be treated individually if you want best results. If you're near Sheffield, gimme a shout. Chris
|
||
Quality sound from Sheffield
www.grimshawaudio.com |
||
Jack1991
Registered User Joined: 05 February 2020 Location: Bristol Status: Offline Points: 491 |
Post Options
Thanks(0)
|
|
Oh right ok cool thanks for the info. It definitely does sound far beyond my knowledge then.
Would you say the difference of using pre built and a custom made one is night and day? Or is it something for a first time speaker builder it would be just fine. Im not looking to build the worlds best speaker but obviously i dont want it to sound crap either. Also thanks appreciate the offer but im down in bristol.
Edited by Jack1991 - 12 February 2020 at 4:25pm |
||
Jack1991
Registered User Joined: 05 February 2020 Location: Bristol Status: Offline Points: 491 |
Post Options
Thanks(0)
|
|
Another thing i wondered is this
If i have 2 identical speakers (mid 8ohm, tweeter 8ohm, crossover 8ohm) If i ran 2 of the same speakers in parrallel to get a 4 ohm load. Will that affect the 8ohm crossover. Or will it all be fine? Thanks
|
||
dlyxover
Old Croc Joined: 14 June 2007 Location: Liverpool Status: Offline Points: 1508 |
Post Options
Thanks(0)
|
|
In the Truth there is no news, and in the News there is no truth
|
||
Chris Grimshaw
Registered User Joined: 10 September 2018 Location: Sheffield Status: Offline Points: 281 |
Post Options
Thanks(0)
|
|
A generic crossover will never sound as good as something purpose-built for the drivers you've chosen. The "not sound as good" could be anything from a big peak or dip in the response, and/or inadequate tweeter protection resulting in premature driver death.
Passive crossovers react to impedance changes, and it's not always predictable. Active crossovers are easier in a lot of ways, and make sense for medium-to-high-power PA systems. Chris
|
||
Quality sound from Sheffield
www.grimshawaudio.com |
||
ceharden
The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
Post Options
Thanks(0)
|
|
I'm working on a passive crossover design at the moment. Taking significantly longer than the time it took to build the actual cabinet!
|
||
Chris Grimshaw
Registered User Joined: 10 September 2018 Location: Sheffield Status: Offline Points: 281 |
Post Options
Thanks(0)
|
|
Yep, sounds about right. I find XSim to work pretty well if your measurements are decent. Chris
|
||
Quality sound from Sheffield
www.grimshawaudio.com |
||
ceharden
The 10,000 Points Club Joined: 05 June 2005 Location: Southampton Status: Offline Points: 11776 |
Post Options
Thanks(0)
|
|
Not used XSim before, previously done it more by trial and error plus a couple of spreadsheets which do some of what XSim can. Since a few people have mentioned it I thought I'd give it a go, loaded my impedance plots in and it's really helped. Still trial and error to some extent but quite useful to check out what varying each component value will do before trying it in practice.
Finally got something I was happy with this afternoon.
|
||
Chris Grimshaw
Registered User Joined: 10 September 2018 Location: Sheffield Status: Offline Points: 281 |
Post Options
Thanks(0)
|
|
Yeah, it won't tell you what to do, but it'll show you what happens when you do something. It gets easier with practice. If you get into the menus, it shows you component power dissipation, too, which is useful for speccing resistors etc. Chris
|
||
Quality sound from Sheffield
www.grimshawaudio.com |
||
Post Reply | Page 12> |
Tweet |
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |