DIY 3 way active crossover: as Christmas Holiday Project - Page 4 - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

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 17th December 2012, 06:38 PM   #31
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

You haven't described your driver options.

rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow
  Reply With Quote
Old 17th December 2012, 06:47 PM   #32
diyAudio Member
 
csom's Avatar
 
Join Date: Dec 2012
Location: Homeless, sweet homeless.
So sorry.
1. The full range is from Rockford ( Model R1653)
3 Way, 48-22kHz,
Voice coil diameter= 1.25(3.23)
Free Air Resonance = 67
Qts = 0.78
Vas-cu.ft.= 0.53
SPL ( db@1w/1m)89
Power Handling Watts ( RMS) 40, peak = 80

2. No specific data available about the midbass except its a 8 Ohm , 6.5 inches midbass

3. Tweeters 4 Ohms paper cone
__________________
Warm regards, Som
  Reply With Quote
Old 17th December 2012, 06:51 PM   #33
sreten is offline sreten  United Kingdom
diyAudio Member
 
Join Date: Nov 2003
Location: Brighton UK
Hi,

The car speakers belong in a car. Can't say much about the other drivers.
Car drivers hardly ever cut the mustard for home hifi use, they are poor.

rgds, sreten.
__________________
There is nothing so practical as a really good theory - Ludwig Boltzmann
When your only tool is a hammer, every problem looks like a nail - Abraham Maslow

Last edited by sreten; 17th December 2012 at 06:53 PM.
  Reply With Quote
Old 17th December 2012, 07:00 PM   #34
diyAudio Member
 
csom's Avatar
 
Join Date: Dec 2012
Location: Homeless, sweet homeless.
Earlier I used the car speakers with my discrete Mosfet Amp. I noticed one thing in my small listening room.
They are good in a very near field listening environment but they tend to lose focus or their sound doesn't spread well . ( trying desperately, using my layman's term, hehe)

I will experiment more and post my observation.

Thank you again sreten.
__________________
Warm regards, Som
  Reply With Quote
Old 18th December 2012, 05:01 AM   #35
diyAudio Member
 
Join Date: Dec 2008
Location: bangalore
Quote:
Originally Posted by csom View Post
Thank you really so much Sudhir for your kind advice. I consider your this post as an encouragement.

Sometimes we face problem due to a slight inadvertent mistake in the PCB design posted on the internet . But your words really helped me to get rid of that concern.

Could you please tell me how you made the PCB ? I am a bit hesitant to use my old toner transfer method in this case as the board is large and fairly complex.

( Oh, I purchased 6 TLO74 Ics and sockets and some 1% metal resistors. And some other parts are already in my inventory. So wish me luck please )
I had used same toner transfer paper method for pcb making. I was also not very certain about the result but it was very good.You go ahead with a good dark laser print on the magazine paper and follow the method..surely you will get good result..
thanks
sudhir.
  Reply With Quote
Old 18th December 2012, 10:51 AM   #36
diyAudio Member
 
csom's Avatar
 
Join Date: Dec 2012
Location: Homeless, sweet homeless.
Thank you so much again Sudhir .

I am trying to create a top layer too for component reference with Gimp. Let's see how it goes.

I will post photos of my works here soon.
__________________
Warm regards, Som
  Reply With Quote
Old 18th December 2012, 11:45 AM   #37
diyAudio Member
 
csom's Avatar
 
Join Date: Dec 2012
Location: Homeless, sweet homeless.
Quote:
Originally Posted by sudhir kumar View Post
.....................You go ahead with a good dark laser print on the magazine paper and follow the method..surely you will get good result..
thanks
sudhir.
I have 2 questions here.

1. Very soon I am planning to buy a laser printer that is low cost, low maintenance, and suitable for my DIY PCB making.

Which Laser Printer do you recommend ?

2. At present I use laser tracing paper but I heard many good things about magazine paper on the net. But I am confused which Magazine ( or type of paper ) to use as there are many types of magazines available in India as you are well aware of and they use different types of paper .

Could you name a magazine that can be used for this purpose?

Thank you.
__________________
Warm regards, Som
  Reply With Quote
Old 18th December 2012, 12:10 PM   #38
diyAudio Member
 
csom's Avatar
 
Join Date: Dec 2012
Location: Homeless, sweet homeless.
Another question

How did you get the component reference on top layer on the PCB that you made as the photo of the top layer is not identical in size with the PDF of the copper layer?

Did you use a paper print and stick it on top?

I used Gimp to adjust the top layer coordination with the copper side but couldn't be able to get the correct size at first.
I somehow managed that finally.
__________________
Warm regards, Som
  Reply With Quote
Old 19th December 2012, 07:33 AM   #39
diyAudio Member
 
Join Date: Oct 2011
Location: Cochin-Kerala
Quote:
Originally Posted by csom View Post
Another question

How did you get the component reference on top layer on the PCB that you made as the photo of the top layer is not identical in size with the PDF of the copper layer?

Did you use a paper print and stick it on top?

I used Gimp to adjust the top layer coordination with the copper side but couldn't be able to get the correct size at first.
I somehow managed that finally.

@csom,

I have the PCB and components left out with me. If you are interested please let me know. You can reach me at bibin3210atgmaildotcom.

Thanks,
Bibin
  Reply With Quote
Old 19th December 2012, 11:33 AM   #40
diyAudio Member
 
csom's Avatar
 
Join Date: Dec 2012
Location: Homeless, sweet homeless.
My previous post is lost perhaps because of Internet problem.
So I am posting it again.

Thank you so much bibin.
Much appreciated.

I made 3 layers ( top, bottom, drill hole ref ) from the download of that site, and gave it to a man who makes PCBs. Probably he is going to charge me a fortune but since this Project is well tested by our respected fellow members like Pra, Sudhir and many others, I decided to take the risk.
I might get the PCB the day after tomorrow if everything goes well.
If not, I definitely will take resort to your kind concern.

Thanks a lot, really, Bibin,
__________________
Warm regards, Som

Last edited by csom; 19th December 2012 at 11:51 AM.
  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
Peamplifier and active crossover, working project geminni Solid State 11 6th October 2010 06:52 PM
AnAnalogue active crossover for speaker project! dogscanskate Multi-Way 16 31st December 2009 06:50 AM
3 Way Active Crossover Design project powagrip Multi-Way 13 23rd February 2005 09:06 PM
active crossover project victordsouza Multi-Way 0 9th September 2003 05:17 PM


New To Site? Need Help?

All times are GMT. The time now is 04:58 PM.


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