Homemade - Show us what you've made!

radio, tape, stands and accessories
Spinner45
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Re: Homemade - Show us what you've made!

Post by Spinner45 » 30 Jul 2018 06:29

Coffee Phil wrote:Hi Spinner45,

I did learn about the rumble washer thing (looking at a Dual service manual) when I was restoring my RP190 and probably should have done it, but the washers seemed to be a big improvement and the slight increase in friction did not hurt speed accuracy.
Increase in friction?
How?
The rubber rumble washer is always installed under the bottom-most polished washer that is beneath the ball bearing race.
I can't see how that would increase any friction.

Coffee Phil
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Re: Homemade - Show us what you've made!

Post by Coffee Phil » 30 Jul 2018 08:11

Hi Spinner45,

I did not use a resilient "rumble washer" in my RP190 though I probably should have. I replaced the Lazy Susan bearing with a stack of brass washers which I lapped with valve grind compound then lubed with lithium grease. I probably should get another Lazy Susan ball bearing assembly and add the silicone rumble washer and see if the rumble in stereo is acceptable.

Phil

Spinner45 wrote:
Coffee Phil wrote:Hi Spinner45,

I did learn about the rumble washer thing (looking at a Dual service manual) when I was restoring my RP190 and probably should have done it, but the washers seemed to be a big improvement and the slight increase in friction did not hurt speed accuracy.
Increase in friction?
How?
The rubber rumble washer is always installed under the bottom-most polished washer that is beneath the ball bearing race.
I can't see how that would increase any friction.

Spinner45
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Re: Homemade - Show us what you've made!

Post by Spinner45 » 27 Aug 2018 06:15

I wanted a nice, compact radio to use in the bedroom.
The GE clock radio is ok, but....it's a clock radio.
Oh sure, I could have bought one, right?
Lord knows I've got no shortage of radios or audio in the house.
I love music.
But I enjoy woodworking, and designing things "from scratch".
To my lovely (and picky) standards.

So..
I fired up my woodworking power tools in the garage, and along with my extensive knowledge of electronics and audio..... I produced this radio.

13 inches wide, compact, yet with a respectable sonic character....
Hand made cabinet of 1/2 inch-3/4 inch wood, walnut veneered....
A 20 watt stereo amplifier custom-made....(STK430 IC design)
Am/FM stereo tuner board salvaged from a boombox...
Weighted flywheel tuning...
Four 2.5 inch high-performance speakers, air-suspension, angled out at 45 degrees to "spread" the stereo image...
And this is what resulted....
StereoRadioProject 8-2018.JPG
(203.07 KiB) Downloaded 279 times

Tinkaroo
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Re: Homemade - Show us what you've made!

Post by Tinkaroo » 27 Aug 2018 08:26

Spinner45 wrote:I wanted a nice, compact radio to use in the bedroom.
The GE clock radio is ok, but....it's a clock radio.
Oh sure, I could have bought one, right?
Lord knows I've got no shortage of radios or audio in the house.
I love music.
But I enjoy woodworking, and designing things "from scratch".
To my lovely (and picky) standards.

So..
I fired up my woodworking power tools in the garage, and along with my extensive knowledge of electronics and audio..... I produced this radio.

13 inches wide, compact, yet with a respectable sonic character....
Hand made cabinet of 1/2 inch-3/4 inch wood, walnut veneered....
A 20 watt stereo amplifier custom-made....(STK430 IC design)
Am/FM stereo tuner board salvaged from a boombox...
Weighted flywheel tuning...
Four 2.5 inch high-performance speakers, air-suspension, angled out at 45 degrees to "spread" the stereo image...
And this is what resulted....
StereoRadioProject 8-2018.JPG
That is a beautiful table radio Spinner! 8)

You did a great job. It is unique and probably sounds lovely too!

JoeE SP9
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Re: Homemade - Show us what you've made!

Post by JoeE SP9 » 27 Aug 2018 18:02

Spinner45 wrote:I wanted a nice, compact radio to use in the bedroom.
The GE clock radio is ok, but....it's a clock radio.
Oh sure, I could have bought one, right?
Lord knows I've got no shortage of radios or audio in the house.
I love music.
But I enjoy woodworking, and designing things "from scratch".
To my lovely (and picky) standards.

So..
I fired up my woodworking power tools in the garage, and along with my extensive knowledge of electronics and audio..... I produced this radio.

13 inches wide, compact, yet with a respectable sonic character....
Hand made cabinet of 1/2 inch-3/4 inch wood, walnut veneered....
A 20 watt stereo amplifier custom-made....(STK430 IC design)
Am/FM stereo tuner board salvaged from a boombox...
Weighted flywheel tuning...
Four 2.5 inch high-performance speakers, air-suspension, angled out at 45 degrees to "spread" the stereo image...
And this is what resulted....
StereoRadioProject 8-2018.JPG
Very nice work! =D>

ChrisfromRI
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Re: Homemade - Show us what you've made!

Post by ChrisfromRI » 31 Aug 2018 17:08

Nice Work Everyone on your DIY Projects! It's nice to see the care and thought you put into them to solve what you were looking to accomplish!!

I will share this combination of DIY projects I built for this special room, consisting of:
1. Home-Made High Performance Turntable and Dustcover.
2. Home-Made vacuum tube phono stage and separate B+/filament DC power supply.
3. Home-Made record and tape storage console.

42330

ChrisfromRI
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Re: Homemade - Show us what you've made!

Post by ChrisfromRI » 23 Sep 2018 04:10

Here's that Home-Made High Performance Turntable playing a record:

https://www.youtube.com/watch?v=hvRMro8 ... e=youtu.be

Tonybro
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Re: Homemade - Show us what you've made!

Post by Tonybro » 23 Sep 2018 09:12

It was stated in your other thread, Chris, we need a longer video with a better view of everything! It is something you should be very proud about! :D

ChrisfromRI
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Re: Homemade - Show us what you've made!

Post by ChrisfromRI » 23 Sep 2018 15:21

The first video I took with my phone was around twice as long and it failed to upload to my computer and then YouTube, so I tried taking a shorter one that was only 18 MB, and that one uploaded fine and is up live now. There is a slow motion button on the YouTube viewer that we usually use for sports motion analysis and that might be helpful for you to use until I can figure out how to put up a longer video.

Spinner45
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Re: Homemade - Show us what you've made!

Post by Spinner45 » 09 Feb 2019 21:56

I thought I'd resurrect this thread with something NEW that I put together just recently.
It's an integrated amp - I used some stuff I had around, did some custom modifications and designs.
Got an aluminum chassis from Mouser, parts from Parts Express, Jameco, and a few other supply houses I deal with.
The amp is based on "Old School" design, but my madness designed in plenty of "over-built" features.
It puts out clean 60W/per channel sine waves on my oscilloscope, it sounds fantastic with music, has a custom phono preamp and tone correction circuits.
And.... it doesn't look too bad, either.

Here it is......
The2019 Amplifier.JPG
(320.44 KiB) Downloaded 86 times

Tinkaroo
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Re: Homemade - Show us what you've made!

Post by Tinkaroo » 09 Feb 2019 22:11

That looks like a very nice amp Spinner! 8)

ChrisfromRI
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Re: Homemade - Show us what you've made!

Post by ChrisfromRI » 10 Feb 2019 04:06

Very nice to see the Silver front and the wood sides Spinner!

truedeth
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Re: Homemade - Show us what you've made!

Post by truedeth » 11 Feb 2019 17:13

received_394125314655547.jpeg
Plans for a stand
(91.87 KiB) Downloaded 43 times
received_389221938507119.jpeg
Plans for a stand early designs
(83.17 KiB) Downloaded 44 times
I'm going to have to build my own stand so this is the plans I drew up to house my Technics/Panasonic SA-5370, my Technics SL-J2 turntable, and some records. Unfortunately my receiver is a hair too wide to fit in the stands that appeal to me online. Pretty excited to have a nice setup that will work with my needs!!
Any suggestions are welcome!

Spinner45
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Re: Homemade - Show us what you've made!

Post by Spinner45 » 11 Feb 2019 17:36

truedeth wrote:
11 Feb 2019 17:13
received_394125314655547.jpeg
received_389221938507119.jpeg
I'm going to have to build my own stand so this is the plans I drew up to house my Technics/Panasonic SA-5370, my Technics SL-J2 turntable, and some records. Unfortunately my receiver is a hair too wide to fit in the stands that appeal to me online. Pretty excited to have a nice setup that will work with my needs!!
Any suggestions are welcome!
Just remember to allow about 2 to 3 inches rearward and about 1 inch on each side of the receiver for ventilation.
Two circular 3 inch holes bored in the back panel will add airflow, and access for wiring.

truedeth
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Re: Homemade - Show us what you've made!

Post by truedeth » 11 Feb 2019 17:49

Spinner45 wrote:
11 Feb 2019 17:36

Just remember to allow about 2 to 3 inches rearward and about 1 inch on each side of the receiver for ventilation.
Two circular 3 inch holes bored in the back panel will add airflow, and access for wiring.
I allowed about an inch on both side of the receiver and six inches in the back, and I plan on having an oval cutout in the back as seen in the second sketch. How much clearance on the top should I have?