Dave Slagle Monoblock Transformer Volume Control Build
- Thread starter SET12
- Start date
Tillerman
Active Member
Dan,
Can you share the part number and source for your ABS boxes?
SET12
Super Member
Here they are $9.70 each. http://www.digikey.com/product-search/en?keywords=377-1218
BTW I had the same trouble with my knobs and I spent $80 on them, luckily I had another set that worked out better because they have a nice white line that's easy to see.
SET12
So it sounds like they are not standard 6mm shafts. Where did you find knobs that worked? I'm reluctant to file down the shafts.
SET12
Super Member
I got them from Welbourne Labs 25 yrs ago.
I was thinking of taking my knobs to a metal shop and having them drill the knobs out, it wouldn't be a lot of metal, but accuracy is needed.
well that is helpful. i'm seeing a bunch of knobs for 1/4" shafts on the bay and looks like PE has them too. thanks!
https://www.parts-express.com/search.aspx?N=4294967118+4294965633&Nrpp=99999&Nrs=collection()/record[endeca:matches(.,"P_PortalID","1")+and+endeca:matches(.,"P_Searchable","1")]&Ntt=1/4*+inch*+shaft*&PortalID=1
http://www.ebay.com/itm/4-PCS-Gibso...-USA-SELLER-/301766187610?hash=item4642aa9a5a
http://www.mcmelectronics.com/product/MULTICOMP-CR-BA-1C6-180D-/28-11818
http://www.ebay.com/itm/4-PCS-Gibso...-USA-SELLER-/301766187610?hash=item4642aa9a5a
http://www.mcmelectronics.com/product/MULTICOMP-CR-BA-1C6-180D-/28-11818
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gonna try these: http://www.mammothelectronics.com/4S1510-Red-Knob-p/700-1202.htm
email back from dave; says the data sheet shows shaft = 6.35mm, which is same as 1/4"
Tillerman
Active Member
Thanks for the update. I think this thread is going to become a reference for current and future builders. All the links are great to have.
Binkman
Lunatic Member
morph to knobs.. 
been following thread a bit.
We had a member with a big thread on 3d printing... can't see why it wouldn't work. I have a sta-2300 with aluminum and small bands of rubber to give you grip. well thought of could be dipped, too. There are inserts that could be made but what the heck.. not a perfect fit on shaft? well improvise!
bink
been following thread a bit.We had a member with a big thread on 3d printing... can't see why it wouldn't work. I have a sta-2300 with aluminum and small bands of rubber to give you grip. well thought of could be dipped, too. There are inserts that could be made but what the heck.. not a perfect fit on shaft? well improvise!
bink
SET12
Super Member
My knobs appear to be exactly 30 mm in diameter. And are just like the first one on this page but larger. http://www.mammothelectronics.com/category-s/44.htm
that looks nice! i just finished mine too: http://albums.phanfare.com/isolated/1xGL8309/1/7200082
so far it is very detailed and balanced. i have to do a shoot-out with the LDR, but i think the TVC has an edge re detail. i did find that it was not able to fully attenuate one of my sources, a tuner. luckily the tuner has output pots so i can reduce its output. however, i'd rather take those pots out of the equation, so the lack of full attenuation is a downside of the TVC.
is there any burn-in period with the TVC?
so far it is very detailed and balanced. i have to do a shoot-out with the LDR, but i think the TVC has an edge re detail. i did find that it was not able to fully attenuate one of my sources, a tuner. luckily the tuner has output pots so i can reduce its output. however, i'd rather take those pots out of the equation, so the lack of full attenuation is a downside of the TVC.
is there any burn-in period with the TVC?
