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Thread: Laney VC15 - In need of sharper and clearer pdf copy.

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    Laney VC15 - In need of sharper and clearer pdf copy.

    Hello everyone, I had check the sticky Laney schemes thread and yes there is a link to a VC15 schemes but it's very fuzzy and hard to read by my old worn eyes.

    I would appreciate a clearer copy before I open the one I have sent in.

    I'm uncomfortable when probing anything without any documentation but sometimes I do it anyway.haha. Hope to get some feedback here. Thanks in advance.

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    Supporting Member mozz's Avatar
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    Senior Member vintagekiki's Avatar
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    Links to Laney schematics


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    Quote Originally Posted by vintagekiki View Post
    Thanks Vintagekiki, I had click your link prior to this but the VC15 copy over there is the fuzzy one I saved to look at.

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    I had checked the fuzzy VC15 schematic and found that one does not match the VC15 I'm troubleshooting. That one seems to be meant for older VC15 version with spring reverb. This one I'm looking at now has digital reverb board in it. The components numbering do not match. Maybe mine is generation 2 or 3. Hope anyone that have this schematic would share to me.

    Thanks in advance people.

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    Senior Member vintagekiki's Avatar
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    http://i153.photobucket.com/albums/s237/Bluesbar12/VC15scheme.jpg

    Unfortunately, the scheme is as it is.
    maybe you can help if you look at the links


    https://www.thegearpage.net/board/index.php?threads/laney-vc-15-reverb-upgrade-questions.509719/

    http://s153.photobucket.com/user/Bluesbar12/library/?sort=3&page=1

    https://www.thetubestore.com/laney-schematics

    Question

    Laney series VC .. have spring reverb.
    Whether the Digital reverb board on VC15 is original or is subsequently installed.
    Set some photos of VC15 and Look "Under the Hood" (photo PCB ...)

    Digital reverb Laney incorporates the Cub series amplifiers


    https://www.thetubestore.com/lib/thetubestore/schematics/Laney/Laney-Cub-12R-Schematic.pdf

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    Quote Originally Posted by vintagekiki View Post
    [URL="http://i153.photobucket.com/albums/s237/Bluesbar12/VC15scheme.jpg"]
    Question

    Laney series VC .. have spring reverb.
    Whether the Digital reverb board on VC15 is original or is subsequently installed.
    Set some photos of VC15 and Look "Under the Hood" (photo PCB ...)

    Digital reverb Laney incorporates the Cub series amplifiers


    https://www.thetubestore.com/lib/thetubestore/schematics/Laney/Laney-Cub-12R-Schematic.pdf
    The one I'm repairing has never been opened as the glue on the connector and tubes socket are intake until I dismantle. Base on your CUB12R link I may concur that this VC15 uses the FV1 reverb chip board sold by tubeampdoctor.

    Click image for larger version. 

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    Had you not point me to the Cub12R scheme I wouldn't dig the net further which I did and found there's 2 version of Laney VC15. Looking at both from the back where the PT and OT are position. Ver 1 must be with spring reverb and later replaced with the digital one.

    The amp I'm checking has treble disappearing act but to my ears its fine as it is. All controls are responding well. There's popping sound trailing the outputting when reverb is turn up. Turn off the reverb and its fine. I re soldered all three pcb just in case.

    I have to return back this amp today as he needs it back. Maybe in future I'll have a second chance at it. Thank you Vintagekiki for the enlightment. I am very grateful for your shared research

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    Click image for larger version. 

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ID:	49812 Click image for larger version. 

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    Last edited by ahseng; 07-20-2018 at 04:13 PM.

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    I had emailed Laney for the schematics and their reply was positive. From the schematic provided I can now confirm that all post 2009 VC15-110 has digital reverb. All VC15 before 2009 uses spring reverb.Thank you.

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    Senior Member vintagekiki's Avatar
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    Quote Originally Posted by ahseng View Post
    I had emailed Laney for the schematics and their reply was positive ... ...
    If you get schematics from Laney, be kind and share it with us.
    470

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    Quote Originally Posted by vintagekiki View Post
    If you get schematics from Laney, be kind and share it with us.
    470
    PM me your email so you could put it here or where it should be. I don't know how to paste PDF file here.

    Thank you

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    Lifetime Member Enzo's Avatar
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    You upload as an attachment. When posting, do the GO ADVANCED button. There will be MANAGE ATTACHMENTS down in the options below. CLick that. A box will open up. Click a search box, and then find the file on your computer and select it, then hit upload.

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    Education is what you're left with after you have forgotten what you have learned.

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    Senior Member vintagekiki's Avatar
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    Quote Originally Posted by ahseng View Post
    PM me your email so you could put it here or where it should be. I don't know how to paste PDF file here.

    Thank you
    vintagekiki@yahoo.com

    Thanks in advance

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    Senior Member vintagekiki's Avatar
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    Quote Originally Posted by ahseng View Post
    PM me your email so you could put it here or where it should be. I don't know how to paste PDF file here.

    Thank you
    And finally what would be with schematics.

    Will you share with us?

    Thanks for any reply.

    vintagekiki@yahoo.com

    vk

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    Senior Member vintagekiki's Avatar
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    Question

    From some reason thread does not upload any attachment.

    PS

    ahseng thank you veru much for schematics

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    Last edited by vintagekiki; 09-14-2018 at 02:22 PM.

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    VC15-110 (2009) schematics

    VC15-110 (2009).pdf

    ahseng thank you veru much for schematics

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    Hi abseng, would you have the -pre- 2009 schematic for the spring reverb VC15? like you I can only find fuzzy www ones.

    Cracking amp this- never thought I'd have a laney/ being a fender amp nut. but works a treat with my single coil tele & strat.

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    Quote Originally Posted by Sea Chief View Post
    Hi abseng, would you have the -pre- 2009 schematic for the spring reverb VC15? like you I can only find fuzzy www ones.

    Cracking amp this- never thought I'd have a laney/ being a fender amp nut. but works a treat with my single coil tele & strat.
    I'm afraid I don't sir. Have you tried emailing laney? They were responsive when this was.

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    Thanks alot. weird but I can't find the reverb circuit within it.. is it to do with the optional (maybe later version) pcb area, at the top of the schematic? I'm trying to see if any 1/2 of the preamp tubes are part of the reverb circuit- wishfully thinking maybe-?

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    Senior Member vintagekiki's Avatar
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    Quote Originally Posted by Sea Chief View Post
    I can't find the reverb circuit within it.. is it to do with the optional (maybe later version) pcb area, at the top of the schematic?
    Schematics position Up 7 & 8 / Right B

    For reverb used IC U2A/B (TL072) and U3A (TL072)
    Reverb connectors SK4 / SK5
    Reverb pot VR7 (220KA)

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    Quote Originally Posted by vintagekiki View Post
    Schematics position Up 7 & 8 / Right B

    For reverb used IC U2A/B (TL072) and U3A (TL072)
    Reverb connectors SK4 / SK5
    Reverb pot VR7 (220KA)
    Got it- thanks vintagekiki! so these chips TL072 are instead of a nice tube-driven reverb, yes? or is any part of the reverb circuit using tube?

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    Senior Member vintagekiki's Avatar
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    When forming a sound for reverb, unimportant if the reverb passes from a tube or solid state because the sound goes through mechanical (spring) delay lines.
    Click image for larger version. 

Name:	VC15 rev.jpg 
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    Quote Originally Posted by vintagekiki View Post
    When forming a sound for reverb, unimportant if the reverb passes from a tube or solid state because the sound goes through mechanical (spring) delay lines.
    Click image for larger version. 

Name:	VC15 rev.jpg 
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ID:	54794
    But aren't tube reverbs meant to sound better tho? thinking along fender avenue, PR, TR etc.. I'm sure part of that lovely sound is due to tubes having some say in the matter.

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    What did your ears tell you Chief? I don't remember you saying the reverb sounded crap.
    All else is placebo.

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    Just because they don't have tubes doesn't mean they don't have feelings! - glebert

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    Quote Originally Posted by g1 View Post
    What did your ears tell you Chief? I don't remember you saying the reverb sounded crap.
    All else is placebo.
    Good question yes, understood G1.




    I think it does sound a little bit crappy.

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    Quote Originally Posted by Sea Chief View Post
    But aren't tube reverbs meant to sound better tho? thinking along fender avenue, PR, TR etc.. I'm sure part of that lovely sound is due to tubes having some say in the matter.
    Well, thatīs a somewhat simplistic point of view.

    Tubes by themselves donīt do "magic" automatically.

    They do have some weird quirks which we happen to love, but we must exploit them.

    Just "going through a tube", at low signal levels so it behaves, clean and flat, "does nothing" to sound.

    Now if you use a Tube power amp things change, doubly so if you overdrive it, but you need to reach that point.

    Op Amps driving reverb tanks are fine and popuklar in MANY all tube signal path amps, including modern Fender and many others ... and Laney of course

    One point in favour of old style Fender reverb is that they drove it HARD; that transformer coupled 12AT7 easily put out at least 1W RMS, maybe up to 2 W, and SLAMS those springs.

    But you would need to add the full Reverb circuit: 2 double triodes, transformer, etc. if you want that improvement, just adding a triode here or there is not enough.

    But again, Op Amp reverbs sound quite good.

    Here Laney walked the extra mile and used two Op Amps in parallel to drive that tank, not bad at all.

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    Juan Manuel Fahey

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    Senior Member vintagekiki's Avatar
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    Quote Originally Posted by Sea Chief View Post
    But aren't tube reverbs meant to sound better tho? thinking along fender avenue, PR, TR etc.. I'm sure part of that lovely sound is due to tubes having some say in the matter.
    If you say so, then so be it.

    Meditation Topic.
    If you convert the wave signal to mp3 and then transfer the resulting mp3 back to wave, what will be the quality of the signal in the end?

    The same story applies when a clean signal is passed through digital devices (phaser, chorus, flanger, delay) or through mechanical delay devices.
    Question
    What is left of a clean signal at the output of a digital or mechanical device?

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    Last edited by vintagekiki; 08-19-2019 at 10:18 PM.

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