Audio Emotion  Epiphany Acoustics 
Page 1 of 2 12 LastLast
Results 1 to 20 of 21

Thread: Volume pot

  1. #1
    Wammer
    Join Date
     Apr 2009
    Posts
     111
    Location
     London, ,

    Post imported post

    I'm looking at improving on my Alps Blue Pots probably for a stepped pots. Any recommendations I'll need two mono ones. I suppose I'd be looking to spend around £50 on each one but will up this if it'll make much difference.

    Cheers, Tim

  2. #2
    Super Wammer Dik Dolan's Avatar
    Join Date
     Aug 2005
    Posts
     2,813
    Location
     United Kingdom
    Turn Table
     SME20/2
    T/Arm & Cart
     SME iv Lyra Dorian
    SUT/Phono
     World Designs phono3
    Speakers
     Yamaha NS1000m
    Pre Amp
     World Designs pre3
    Power Amp
     Glasshouse 300bsep
    Headphones
     
    In the Hi-Fi industry?
     No

    Post imported post

    Well for about 16p you could try the shunt mod to your existing alps' first...
    http://www.wduk.worldomain.net/forum...read.php?t=198
    "My god, it's full of arse"

  3. #3
    Sceptical Wammer
    Join Date
     Oct 2005
    Posts
     4,205
    Location
     East Midlands, Unite
    Real Name
     Tony
    Turn Table
     Lenco Soup
    Digital Source 1
     Rotel RCD991
    Integrated Amp
     Wad Kat88
    Speakers
     Spendor S100
    In the Hi-Fi industry?
     Yes

    Post imported post

    Now that looks pretty interesting Dik. Have you tried it?

  4. #4
    Super Wammer Dik Dolan's Avatar
    Join Date
     Aug 2005
    Posts
     2,813
    Location
     United Kingdom
    Turn Table
     SME20/2
    T/Arm & Cart
     SME iv Lyra Dorian
    SUT/Phono
     World Designs phono3
    Speakers
     Yamaha NS1000m
    Pre Amp
     World Designs pre3
    Power Amp
     Glasshouse 300bsep
    Headphones
     
    In the Hi-Fi industry?
     No

    Post imported post

    Yeah Tony, it's what I'm using in my WD pre3 (47k alps-47k shunt res.). I originally tried it because the standard 47k pot was a bit too twitchy at low volumes- the pre3 has quite a lot of gain. As well as fixing the twitchyness, it does give more clarity and loses pretty much all of the alps' signature sound.
    Since tweaking my phonostage (which has given that a little more gain), I could probably do with increasing the shunt res. a little more, but it's nowhere near bad enough to make me actually get of my arse and try that, yet=)
    "My god, it's full of arse"

  5. #5
    Wammer Fatmarley's Avatar
    Join Date
     Dec 2008
    Posts
     1,642
    Location
     Gloucestershire
    Real Name
     Matt
    Digital Source 1
     Modified CA Dacmagic
    Integrated Amp
     Modified Onix OA21
    Speakers
     DIY
    In the Hi-Fi industry?
     No

    Post imported post

    http://www.hificollective.co.uk/comp...tiometers.html


    I like the vishay dale stepped attenuator - it's quite big though.

  6. #6
    Super Wammer Dik Dolan's Avatar
    Join Date
     Aug 2005
    Posts
     2,813
    Location
     United Kingdom
    Turn Table
     SME20/2
    T/Arm & Cart
     SME iv Lyra Dorian
    SUT/Phono
     World Designs phono3
    Speakers
     Yamaha NS1000m
    Pre Amp
     World Designs pre3
    Power Amp
     Glasshouse 300bsep
    Headphones
     
    In the Hi-Fi industry?
     No

    Post imported post

    For anyone interested, the pseudoshunt that I linked to came about from a series of posts on the old, now long gone WAD forum. I wasnt a party to it, but quite a few folk tried a lot of variations, and different pots. The version I linked to was the final layout that most seemed to like best.
    "My god, it's full of arse"

  7. #7
    adamus
    Guest

    Post imported post

    http://www.khozmo.com/

    apparantly released in a couple of weeks.... look very nice!

  8. #8
    Wammer
    Join Date
     Apr 2009
    Posts
     111
    Location
     London, ,

    Post imported post

    Fatmarley wrote:
    http://www.hificollective.co.uk/comp...tiometers.html


    I like the vishay dale stepped attenuator - it's quite big though.
    Appears to be stereo only and the rest of the page does talk about other units being better than it. Appreciate the link though.



    Simple question, is this a standard fitting on all pots?

    Thanks, Tim

  9. #9
    Super Wammer
    Join Date
     Feb 2008
    Posts
     2,886
    Location
     UK
    Real Name
     Chris
    In the Hi-Fi industry?
     No

    Post imported post

    I'll second the shunt Mod option. You can use a bit of vero-board over the teminals of the Alps pot to mount the resistors on. I use a 50K Alps Blue Dual Log pot with a 47k shunt resistor (Metal film) in my passive attenuator. I makes a huge difference to the sound compared to the signal going through the Alps pot (without the shunt). It sounds cleaner and more detailed with the shunt in place. And best of all it costs less than 20p.

    Chris.
    Tomorrow belongs to those who can see it coming.
    Chris.

  10. #10
    Sceptical Wammer
    Join Date
     Oct 2005
    Posts
     4,205
    Location
     East Midlands, Unite
    Real Name
     Tony
    Turn Table
     Lenco Soup
    Digital Source 1
     Rotel RCD991
    Integrated Amp
     Wad Kat88
    Speakers
     Spendor S100
    In the Hi-Fi industry?
     Yes

    Post imported post

    cleaner sounds good ... more detail depends what you mean. If it means bright then I'll not be so keen. Maybe the thing for me to do would be to buy a an alps blue and cheap maplins box and make a simple passive (that's what the Beat B-100 is anyway the way I'm using it - bit of a waste really but it's got a good MM phonostage for arm 2 and the missus likes the way it looks) rather than butcher my B100 to find out. It certainly sounds interesting though and probably within even my limited soldering skills.

    The thing is I've used it and preferred it over any number of active pres, resistor ladder passives and one of those MF TVCs which I didn't like at all (that was into the Yams which are now Diks funnily enough) - it was very bright to these ears. It could be I like the signature of an Alps blue ... in which case removing it might not be the best move.

    But anyway I digress. It's not my thread.

  11. #11
    Super Wammer
    Join Date
     Feb 2008
    Posts
     2,886
    Location
     UK
    Real Name
     Chris
    In the Hi-Fi industry?
     No

    Post imported post

    I've have never found the Alps bright with my Gainclone, just bags of detail. Even with electronic music the sound is well balanced and never bright.

    Chris.
    Tomorrow belongs to those who can see it coming.
    Chris.

  12. #12
    Sceptical Wammer
    Join Date
     Oct 2005
    Posts
     4,205
    Location
     East Midlands, Unite
    Real Name
     Tony
    Turn Table
     Lenco Soup
    Digital Source 1
     Rotel RCD991
    Integrated Amp
     Wad Kat88
    Speakers
     Spendor S100
    In the Hi-Fi industry?
     Yes

    Post imported post

    zebra100 wrote:
    I've have never found the Alps bright with my Gainclone, just bags of detail.¬* Even with electronic music the sound is well balanced and never bright.
    The shunt modded alps you mean?

  13. #13
    Deaf Wammer Tel's Avatar
    Join Date
     Aug 2006
    Posts
     25,916
    Location
     Hove Actually
    Real Name
     Kevin
    Turn Table
     Kuzma Stabi S
    T/Arm & Cart
     Stogi, AN Io
    SUT/Phono
     Audio Note S6c
    Digital Source 1
     Rega Saturn
    Digital Source 2
     SBT
    DAC
     Rega
    Speakers
     LV OBX-R2
    Pre Amp
     Audio Note M3
    Power Amp
     CocoSan 300B PP Mono
    Headphones
     
    In the Hi-Fi industry?
     No

    Post imported post

    Pieter Treurniet of Tribute makes these

    http://www.tribute-audio.nl/

    (follow the link to products/signal/inductive volume control)

    They are pretty classy but probably way over your £50.00 each budget
    "We could have saved the Earth but we were too damned cheap" Kurt Vonnegut

  14. #14
    Super Wammer
    Join Date
     Feb 2008
    Posts
     2,886
    Location
     UK
    Real Name
     Chris
    In the Hi-Fi industry?
     No

    Post imported post

    Uncle Ants wrote:
    zebra100 wrote:
    I've have never found the Alps bright with my Gainclone, just bags of detail. Even with electronic music the sound is well balanced and never bright.
    The shunt modded alps you mean?
    Yes, sorry - should have specified.
    Tomorrow belongs to those who can see it coming.
    Chris.

  15. #15
    Sceptical Wammer
    Join Date
     Oct 2005
    Posts
     4,205
    Location
     East Midlands, Unite
    Real Name
     Tony
    Turn Table
     Lenco Soup
    Digital Source 1
     Rotel RCD991
    Integrated Amp
     Wad Kat88
    Speakers
     Spendor S100
    In the Hi-Fi industry?
     Yes

    Post imported post

    zebra100 wrote:
    Yes, sorry - should have specified.
    Thanks, yes. Just wanted to be sure. Now, given that probably 99% of my home listening has been via an un modded alps blue for the past 9 years, it's what I'm used to. If the mod effectively removes the signature of the pot, how would you describe the signature of the alps blue? - which I know is asking the same question in reverse, but you know what I mean.

  16. #16
    Wammer
    Join Date
     Apr 2009
    Posts
     111
    Location
     London, ,

    Post imported post

    Uncle Ants wrote:
    cleaner sounds good ... more detail depends what you mean. If it means bright then I'll not be so keen. Maybe the thing for me to do would be to buy a an alps blue and cheap maplins box and make a simple passive (that's what the Beat B-100 is anyway the way I'm using it - bit of a waste really but it's got a good MM phonostage for arm 2 and the missus likes the way it looks) rather than butcher my B100 to find out. It certainly sounds interesting though and probably within even my limited soldering skills.

    The thing is I've used it and preferred it over any number of active pres, resistor ladder passives and one of those MF TVCs which I didn't like at all (that was into the Yams which are now Diks funnily enough) - it was very bright to these ears. It could be I like the signature of an Alps blue ... in which case removing it might not be the best move.

    But anyway I digress. It's not my thread.
    Digress all you like Ants your opinion is much appreciated.


    Brightness won't be a problem my 300B amps aren't bright at all at the moment, I'd call them balanced but nowhere near blowing my ears out.

    Thanks all for your info. Tim

  17. #17
    Super Wammer
    Join Date
     Feb 2008
    Posts
     2,886
    Location
     UK
    Real Name
     Chris
    In the Hi-Fi industry?
     No

    Post imported post

    I don't think the Alps has a signature sound as such (although I can only compare the Alps with cheap RS/Maplin dual log pots), others may say different. I upgraded to an Alps pot because of its smooth operation and reliability. Cheaper pots get dirty quite quickly.

    Implementing the shunt mod lifted a veil (over used cliché, I know) from the sound. The signal no longer goes through the wiper arm of the pot. Why this makes a difference I don't know. I'm sure Serge could answer that one. All I know is (IMO) it sounds better with the shunt.

    Another bonus with doing the shunt mod for me was that the sound didn't rise to very loud with a small tweak of the pot, like it did using the log pot alone (if that makes any sense).

    Chris.
    Tomorrow belongs to those who can see it coming.
    Chris.

  18. #18
    Sceptical Wammer
    Join Date
     Oct 2005
    Posts
     4,205
    Location
     East Midlands, Unite
    Real Name
     Tony
    Turn Table
     Lenco Soup
    Digital Source 1
     Rotel RCD991
    Integrated Amp
     Wad Kat88
    Speakers
     Spendor S100
    In the Hi-Fi industry?
     Yes

    Post imported post

    Thanks. If I get the time I think I'll give it a whirl - but as I said I think I'll make a passive with a new pot rather than butcher the Densen and then see how it works out.

  19. #19
    Super Wammer
    Join Date
     Feb 2008
    Posts
     2,886
    Location
     UK
    Real Name
     Chris
    In the Hi-Fi industry?
     No

    Post imported post

    The pre for my clone is basically a pot in a box (shunted Alps) with 2 sets of inputs, a switch (two way toggle) and a set of outputs.

    Chris.
    Tomorrow belongs to those who can see it coming.
    Chris.

  20. #20
    Super Wammer Dik Dolan's Avatar
    Join Date
     Aug 2005
    Posts
     2,813
    Location
     United Kingdom
    Turn Table
     SME20/2
    T/Arm & Cart
     SME iv Lyra Dorian
    SUT/Phono
     World Designs phono3
    Speakers
     Yamaha NS1000m
    Pre Amp
     World Designs pre3
    Power Amp
     Glasshouse 300bsep
    Headphones
     
    In the Hi-Fi industry?
     No

    Post imported post

    I'll try to explain what I mean by the alps' "signature sound". It's a slight softening and colouring...maybe "colouring" is the wrong word, more a muting of tonal colour, detail and atmosphere, giving all sounds a touch of the "filtered/muted" lack of vibrancy. Compare an alps to a dact pot or indeed a shunted alps and it becomes more obvious. I haven't experimented with different types of shunt resistor yet, but I'd expect them to alter the sound a bit too... Nothings perfect- the alps is good. Shunted, it's quite a bit better.

    Oh yeah that reminds me, the dact stepped pots are also very very good, but pricey. I haven't done a direct comparison between a dact pot and a shunted alps yet, but I think it would be very close. I used a dact for quite a few years in my EAR 834p, and also built a passive for my brother using one. He is now dropping hints that he wants me to make him a shunted alps passive.... like me, he finds stepped pots very limiting when trying to set the perfect volume level. Be interesting to see how they do compare side-by-side.
    "My god, it's full of arse"

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •