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New VTL ST-150 Owner

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crazymikie

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New VTL ST-150 Owner
« on: 31 Dec 2016, 01:22 am »
Hi -

I just upgraded my Primaluna Prologue 7's to a VTL ST-150. I was reading an article here about changing out the trimpots and had a few questions, so I joined.


Thanks!
MIke
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JerryM

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Re: New VTL ST-150 Owner
« Reply #1 on: 31 Dec 2016, 01:24 am »
Welcome to AudioCircle, Mike.  :beer:
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Phil A

Re: New VTL ST-150 Owner
« Reply #2 on: 31 Dec 2016, 01:31 am »
Welcome to AC!
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mresseguie

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Re: New VTL ST-150 Owner
« Reply #3 on: 31 Dec 2016, 02:04 am »
Welcome to AC, Mike.

That's is quite a nice jump in quality IMO. May I ask what you use or a preamplifier? (always curious)

Regards,

Michael
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ArthurDent

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Re: New VTL ST-150 Owner
« Reply #4 on: 31 Dec 2016, 02:20 am »
Greetings & Welcome to AC Mike    :thumb:
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SteveFord

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Re: New VTL ST-150 Owner
« Reply #5 on: 31 Dec 2016, 09:21 am »
We like pictures!
Welcome to AC.
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FullRangeMan

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Re: New VTL ST-150 Owner
« Reply #6 on: 31 Dec 2016, 09:52 am »
Welcome Crazymikie :thumb:
Its the bias trimpots? Why are you replacing it?
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crazymikie

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Re: New VTL ST-150 Owner
« Reply #7 on: 2 Jan 2017, 01:42 am »
I have a VTL 5.5 for a preamp. It's an older model, but it rocks. I originally had a 2.5 and sold it when I found the deal on this 5.5.


Quote from: mresseguie on 31 Dec 2016, 02:04 am
Welcome to AC, Mike.

That's is quite a nice jump in quality IMO. May I ask what you use or a preamplifier? (always curious)

Regards,

Michael
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crazymikie

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Re: New VTL ST-150 Owner
« Reply #8 on: 2 Jan 2017, 01:47 am »
Quote from: FullRangeMan on 31 Dec 2016, 09:52 am
Welcome Crazymikie :thumb:
Its the bias trimpots? Why are you replacing it?

A couple of them feel like the are getting worn out. When you adjust them, it's almost impossible to get the voltage correct because they turn so easily. It looks like the 3339 is the way to go - it will give 4 turns of adjustment, but I'm not sure if the 3339P or 3339H is the correct part. Nothing urgent since I got everything dialed in now, but I wanted to order them for a rainy day.
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FullRangeMan

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Re: New VTL ST-150 Owner
« Reply #9 on: 2 Jan 2017, 10:11 am »
Do you already try contact defuct VTL?
Any custumer support?
Do you try reach David Manley?
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SteveFord

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Re: New VTL ST-150 Owner
« Reply #10 on: 2 Jan 2017, 12:24 pm »
VTL is still in business but the stock parts are pretty crappy.
Their customer service consists of "send the unit in for upgrades" and I'm afraid David Manley died a few years back.
There's a thread here about aftermarket bias pots for the 150:
http://www.audiocircle.com/index.php?topic=115789.0
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Maritan

Re: New VTL ST-150 Owner
« Reply #11 on: 2 Jan 2017, 04:23 pm »
Looks like Steve has given you the link to my overhaul thread. On the second page, I indicate that I use the P series mount. Good luck!
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