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Old 10-10-2004, 10:54 PM   #1
mattjk
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Default The DIY audio thread.

For those interested in DIY home audio, this is the thread for you.

Recently I built a record cleaning machine and a digital amp. It was very fun, informative, and a great way to get good stuff for cheap.

Here are some cool links to get started.

Good DIY forum.
www.diyaudio.com

Build the legendary Nelson Pass Designs.
www.passdiy.com
http://web.vip.hr/pcb-design.vip/

Build a copy of the Gain Card integrated.
http://www.chipamp.com/

Excellent tube and solid state PCB's and filled PCB audio kits.
http://www.diyclub.biz/catalog/default.php

Good enclosure sites.
www.par-metal.com
http://www.thlaudio.com/casebpwrE.htm
http://www.iagaudio.com/
http://www.enclosuresandcases.com

Tons of other DIY links.
http://www.audio-nova.com/innehall/audionova_DIY.htm
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Last edited by mattjk; 10-11-2004 at 02:16 AM.
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Old 10-10-2004, 10:54 PM   #2
roffle
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I build a 4" sub using a plunger head and a ton of duct tape

it really sucked, but I got an A
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Old 10-10-2004, 10:58 PM   #3
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Those are some nice sites. Looks like its time for another project.
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Old 10-11-2004, 11:01 AM   #4
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bump
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Old 10-11-2004, 11:13 AM   #5
nunyo
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For the old skool DIY Home Audio, check out www.bottlehead.com.
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Old 10-11-2004, 11:20 AM   #6
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Quote:
Originally Posted by nunyo
For the old skool DIY Home Audio, check out www.bottlehead.com.
cool! they have good stuff.

I think I'm going to build a pair of Pass Aleph 2's. I've always lusted after these amps, now you can build your own $6800 amps for just a few hundred dollars!
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Old 10-11-2004, 11:33 AM   #7
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I recently built a 10" ported HT sub for a house warming gift. It had a 180W plate amp and was tuned to 23Hz. The driver used was a Dayton MKII from Parts Express.


I have a chip amp right next to me that I'm building based on Brian's gainclone cards from www.diyaudio.com This project has been on th eback burner for months. I should really finish it

My next couple projects involve Silver Flute Speakers.
http://home.new.rr.com/zaph/audio/audio-speaker13.html

And perhaps a servo controlled sub from www.rythmikaudio.com

Of course my Suburban has been sucking away at my bank account as of late due to old shocks, and some transmission upgrades I must do so that I can tow some stuff.
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Old 10-11-2004, 11:41 AM   #8
Smahatma
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Do you have a link for how to build a rotel replica?
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Old 10-11-2004, 11:45 AM   #9
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Hmm....I wonder if I could build a version of that chip amp for my car to run a set of Dyns. I dunno.....it doesn't look up to mobile specs, I think heat and vibration would kill it. Plus I'd have to figure out the power supply and a different power toroid.
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Old 10-11-2004, 11:47 AM   #10
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I once built a record player out of a piece of paper rolled into a cone with a straight pin taped to the end.
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Old 10-11-2004, 11:53 AM   #11
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Quote:
Originally Posted by semabe
Hmm....I wonder if I could build a version of that chip amp for my car to run a set of Dyns. I dunno.....it doesn't look up to mobile specs, I think heat and vibration would kill it. Plus I'd have to figure out the power supply and a different power toroid.
http://www.diyaudio.com/forums/showt...252&highlight=
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Old 10-11-2004, 12:49 PM   #12
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OMG, I have to build these one day.
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Old 10-11-2004, 04:10 PM   #13
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Hey Mattjk or anyone who knows anything about record players.

I recently purchased a Crosley CR-49 record player off of eBay. I just got it on Saturday plugged it in turned it on but it would not turn the record. You can hear the arm clicking to engage the motor, but the motor never starts. I emailed the seller and they said it worked when it left their shop, they did not state if they had tried the motor or not. I was just wondering if you have any idea on what I could check to see if I can fix it myself.

Here are some pictures of it.

http://myweb.cableone.net/subiekid/IM001797.jpg
http://myweb.cableone.net/subiekid/IM001798.jpg

Thanks
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Old 10-11-2004, 04:12 PM   #14
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Quote:
Originally Posted by subiekid
Hey Mattjk or anyone who knows anything about record players.

I recently purchased a Crosley CR-49 record player off of eBay. I just got it on Saturday plugged it in turned it on but it would not turn the record. You can hear the arm clicking to engage the motor, but the motor never starts. I emailed the seller and they said it worked when it left their shop, they did not state if they had tried the motor or not. I was just wondering if you have any idea on what I could check to see if I can fix it myself.

Here are some pictures of it.

http://myweb.cableone.net/subiekid/IM001797.jpg
http://myweb.cableone.net/subiekid/IM001798.jpg

Thanks
Pull out the motor and see if it spins. If it doesn't then I guess you have to get a replacement.
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Old 10-11-2004, 04:17 PM   #15
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supplies for DIY

www.speakercity.com
www.madisound.com
www.partsexpress.com

Definitly check the forums on Madisound for speaker building.
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Old 10-11-2004, 04:20 PM   #16
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audio noob here.

but Mattjk could you suggest a system (speakers, amps, cdplayer)for me that would be around 1k. Im not sure what I want in terms of different amps and what not. I just want something basic that will blow away anything retail store bought.
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Old 10-13-2004, 04:19 AM   #17
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I would highly recommend building the Gainclone amp. If you have no basic knowledge of electronics, find someone that can help you in your area. This will get you a killer sounding integrated for less than $135 (45 for the gainclone kit, around $65 for the transformer, and $35 for case, volume pot, wires, and connectors)

For a CDplayer, I recommend the ES line of sony SACD players. You can pick up a used 222 or 333 ES SACD changer on ebay for less than $200. Awesome sound. http://cgi.ebay.com/ws/eBayISAPI.dll...724769129&rd=1

For speakers, I really like the Tannoy Mercury bookshelves, and the larger Paradigm's. You'll have to listen for yourself. The amp and cdplayer are both economical, leaving you with the most money to put into your speakers. You will however need fairly efficient speakers for the Gainclone.

Matt
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Old 10-13-2004, 04:24 AM   #18
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If you want a used speaker, the old Polk Audio Monitor series speakers are incredible.
http://cgi.ebay.com/ws/eBayISAPI.dll...724987975&rd=1
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Old 10-13-2004, 04:28 AM   #19
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Whats the specs on the Gainclone?

as for monitors... I got me a pair of these back when they came out... best purchase since my adcom GFA555 the combo of the 2 is quite impressive tho I lack a good source these days

~v6
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Old 10-13-2004, 04:33 AM   #20
aod
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Matt, I finally got to watch Swingers. Good moobie! Thanks a bunch!

"I'm gonna make Gretzky's head bleed for super fan 99 over here." Best part IMHO.
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Old 10-13-2004, 04:44 AM   #21
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Quote:
Originally Posted by subiekid
Hey Mattjk or anyone who knows anything about record players.

I recently purchased a Crosley CR-49 record player off of eBay

Get rid of it and replace it with this:





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Old 10-13-2004, 05:35 AM   #22
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Cool thread,

I made this DIY record cleaner a while back.



You can read more about it here - > http://www.diyaudio.com/forums/showthread/t-39608.html


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Old 10-13-2004, 05:37 AM   #23
aod
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But your record still has lint on it?
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Old 10-13-2004, 05:41 AM   #24
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Quote:
Originally Posted by aod
But your record still has lint on it?
Check the link and look at the member name
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Old 10-13-2004, 05:47 AM   #25
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Quote:
Originally Posted by eurojax
Check the link and look at the member name
I=pwnt.
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