Pot in a box

bandit pilot

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This is basically how I see passive pre amp's. But I read so many comments of how they can improve the sound to staggering levels of new clarity and better separation. How? It's a pot in a box! What can it improve? and why?

I fail to see how the claims can be real, so I await education. I would actually like to try a passive, as my mono's have tons of gain.

 

i_should_coco

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This is basically how I see passive pre amp's. But I read so many comments of how they can improve the sound to staggering levels of new clarity and better separation. How? It's a pot in a box! What can it improve? and why?I fail to see how the claims can be real, so I await education. I would actually like to try a passive, as my mono's have tons of gain.
I assume vs a n active preamp which adds noise and distortion. Eliminating such an element could bring benefits.

Otherwise, bunk.

 

pgarrish

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perhaps it is that, pound for pound, a passive pre will have better quality components (e.g. that pot) and be in a cleaner environment (no power supplies) than an active at the same price point. Hence a 300-400 passive pre is probably as good as a 1000-1500 active pre in as much as the passive will have comparable sockets, wiring, selector switch and pot/attenuator.

the other likely reason is 'synergy'. Some power amps just get on better with a passive pre and some will work better with an active.

But as you say, by definition, the passive cannot 'add' anything.

 

SergeAuckland

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A passive, except for the few transformer-based passives are just that, a pot in a box. I built anyunumber of them in the past for about £30 each, of which the biggest cost was the box. I currently use a TC Electronics Volume Pilot because I love the knob-feel!

Anyone who can solder and drill a few holes can make a very good passive for around £30.

S

 

Cable Monkey

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Even a pot in a box has to be executed with reasonable care to get things right.

I used a switched resistor passive as proof of concept. You can do the same for relatively little from Tisbury Audio on eBay. If it isn't immediately obvious what the gains are then it isn't for you. My Sonic Euphoria will be making its way up North to that bakeoff on the 27th.

 

SergeAuckland

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Even a pot in a box has to be executed with reasonable care to get things right. I used a switched resistor passive as proof of concept. You can do the same for relatively little from Tisbury Audio on eBay. If it isn't immediately obvious what the gains are then it isn't for you. My Sonic Euphoria will be making its way up North to that bakeoff on the 27th.
Sorry, but what's the difference between a switched resistor network and a decent pot? The benefit of a pot is that it's continuously variable, whereas with switched resistors, the one I want is always between two settings.

S

 

Cable Monkey

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Sorry, but what's the difference between a switched resistor network and a decent pot? The benefit of a pot is that it's continuously variable, whereas with switched resistors, the one I want is always between two settings.S
Did I say there was a difference Serge? Just saying what I used, your post appeared while I was writing. ;-)

 

SergeAuckland

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Did I say there was a difference Serge? Just saying what I used, your post appeared while I was writing. ;-)
Apologies. I made the unwarranted assumption that by mentioning switched resistors, you were implying that they were better than a pot. That has been claimed on here before!

S.

 

Cable Monkey

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Apologies. I made the unwarranted assumption that by mentioning switched resistors, you were implying that they were better than a pot. That has been claimed on here before! S.
No need to apologise. :)

 

bandit pilot

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Rick - I've a DIY passive - silver wired, Alps blue pot, Kiwame resistor shunt to ground - next time you're in Brayton remind me and you can give it a try. :^
Will do cheers mate. I wanted to pop over this weekend, but work made other plans for me. This afternoon was supposed to be free, but :nup: .

 

unclepuncle

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I've had an itch to try a good TVC /Passive for a while and have a Music First Baby Classic coming today that I bought on here at the weekend.

Will be interesting to see how it compares to my Michell Orca, which has really impressed me so far - much nicer than the Chord preamp I had before and tbh there wasn't a great deal between the Orca and Marks (browellm) Kondo M7 to my ears when he brought it round, so the Music First will have to be bloody good to surplant it.

 

unclepuncle

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Got the Music First TVC yesterday and it doesn't sound at all like I was expecting. :nup:

DSC05887.jpg


My preconceptions based on reviews and comments meant that I thought it would be uber fast, very detailed and precise and maybe a bit thin, but in fact it sounds incredibly similar to the Orca and is just exceptionally smooth and easy to listen to.

I'm not sure there is obviously any more detail (maybe that's a compliment to the quality of the Orca:?) or any great change to the soundstage or imaging and the only real difference I can detect is in the bass - which seems a just a bit drier and leaner (possibly it's just less bloated?).

Wll have to swap them over a few more times and see which is the keeper (the remote volume of the Orca is a plus point in it's favour though).

 

smegger68

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medical-marijuana1.jpg


Since I've started using this pot in a box I have noticed an across the board improvement when listening to music. It is much more involving, and the highs.... have to be experienced to be believed. Availability is limited though, finding an authorised dealer is next to impossible :)

 

unclepuncle

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Since I've started using this pot in a box I have noticed an across the board improvement when listening to music. It is much more involving, and the highs.... have to be experienced to be believed. Availability is limited though, finding an authorised dealer is next to impossible :)
Are you open to any trades? :nerves:

 

JANDL100

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This is basically how I see passive pre amp's. But I read so many comments of how they can improve the sound to staggering levels of new clarity and better separation. How? It's a pot in a box! What can it improve? and why?I fail to see how the claims can be real, so I await education. I would actually like to try a passive, as my mono's have tons of gain.
I've a spare Tisbury passive pre I'd be happy to loan you. :)

I think it sounds great and shows the door to many an expensive active pre. But what do I know? - I am happily unencumbered by technical knowledge. :geek: :nup:

Just PM me name/address details if you are interested in a loan of it.

 

smegger68

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I've a spare Tisbury passive pre I'd be happy to loan you. :) I think it sounds great and shows the door to many an expensive active pre. But what do I know? - I am happily unencumbered by technical knowledge. :geek: :nup:

Just PM me name/address details if you are interested in a loan of it.
You have a PM Jerry ;)

 

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