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Old 24th March 2013, 01:20 AM   #3671
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I am a beginner and have built the B1 with a 50k Alps Volume pot.
The B1 is great but I have hissing sound and statics from the tweeter. I can only hear it if I put my ears close to the tweeter.
Does anyone have similar experience with the B1?

Any advice will be appreciated. Thanks.
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Old 24th March 2013, 03:19 AM   #3672
omishra is offline omishra  India
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Is that same case with B1 removed from chain and input shorted? I don't think B1 will add anything but power amplifier might be doing that. My B1 is dead quite and only residuals are from power amp which is same as input of power amps shorted to ground.
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Old 6th April 2013, 11:35 PM   #3673
Rixsta is offline Rixsta  United Kingdom
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wonder if someone can help here
i want to have a switch to switch between 5 sources so have found this rotary switch.
GRAYHILL, 71BD36-01-2-AJN ., SWITCH, ROTARY, DP5T, 300mA, 115V | eBay

it says
No. of Poles:2
No. of Switch Positions:5

So does that mean that 2 poles can be left and right audio signal ?
or do i need 4 poles for

l-in
r-in
l-out
r-out

lol so could someone recommend me something better or cheaper that does the trick ?
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Old 7th April 2013, 12:17 AM   #3674
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Thumbs up You are correct

Quote:
Originally Posted by Rixsta View Post
wonder if someone can help here
i want to have a switch to switch between 5 sources so have found this rotary switch.
GRAYHILL, 71BD36-01-2-AJN ., SWITCH, ROTARY, DP5T, 300mA, 115V | eBay

it says
No. of Poles:2
No. of Switch Positions:5

So does that mean that 2 poles can be left and right audio signal ?
or do i need 4 poles for

l-in
r-in
l-out
r-out

lol so could someone recommend me something better or cheaper that does the trick ?


I'm glad to help.

I think you are right about that one, but I'm not 100% sure. 2 pole = right and left channel. The inputs appear to be five on that one and you have to play around with finding continuity on a Volt-Ohm meter (multimeter) so you can identify how the lugs relate to each other. Each input has a right and a left so you need to determine how the switch works.

I've got a cheapie V.O.M. but I like the audible "beep" I get on it when I get continuity.

May I suggest a much less expensive option from Radio Shack? They are less than $4 U.S. Perfectly fine. Part number appears to now be #275-034 (They appear to be the same as the ones I've used in the past, which were #275-1386). If you punch in "rotary switch" in the R.S. search engine, you'll see it.

If you are confused about this, I can send you a photo or sketch of how my selectors are wired up.

It is a bit confusing at first. That's why I always use the same switch. I made a sketch and keep it handy. When I do a new project I don't have to re-think how it works/wires up.

Best of luck,
Mark
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Old 7th April 2013, 12:54 AM   #3675
6L6 is online now 6L6  United States
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Rixsta - you can use that switch, just make your grounds common. Easy!

If you want to switch your grounds as well, you will need a 2 deck 2 pole 5 position (which might be listed as a 2 deck 4 pole 5 pos)
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Old 7th April 2013, 04:05 AM   #3676
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Quote:
Originally Posted by Mark2727 View Post
I'm glad to help.

I think you are right about that one, but I'm not 100% sure. 2 pole = right and left channel. The inputs appear to be five on that one and you have to play around with finding continuity on a Volt-Ohm meter (multimeter) so you can identify how the lugs relate to each other. Each input has a right and a left so you need to determine how the switch works.

I've got a cheapie V.O.M. but I like the audible "beep" I get on it when I get continuity.

May I suggest a much less expensive option from Radio Shack? They are less than $4 U.S. Perfectly fine. Part number appears to now be #275-034 (They appear to be the same as the ones I've used in the past, which were #275-1386). If you punch in "rotary switch" in the R.S. search engine, you'll see it.

If you are confused about this, I can send you a photo or sketch of how my selectors are wired up.

It is a bit confusing at first. That's why I always use the same switch. I made a sketch and keep it handy. When I do a new project I don't have to re-think how it works/wires up.

Best of luck,
Mark
This one is very similar to what I have used in the past, it works very well.
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Old 7th April 2013, 07:23 AM   #3677
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Location: south France near Avignon
Hi,

Is there someone selling mesmerize buffer? A kit too mount or a mounted one....

Thanks: david
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Old 7th April 2013, 07:58 AM   #3678
Mihan is offline Mihan  New Zealand
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You can buy the Mesmerize PCB but not the parts in the diyAudio Store and the BOM is available on this website somewhere.
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Old 7th April 2013, 08:10 AM   #3679
Mihan is offline Mihan  New Zealand
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DCB1 BOM V4.2.pdf - diyAudio
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Old 7th April 2013, 08:17 AM   #3680
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Ok, thanks Mihan!
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