[HAM] Hammond T400Paul Zizzadoro pazizz60 at gmail.comTue Jan 8 06:05:34 CST 2008
Hi Dave, Thank you so much for your quick reply. Noisy generator - I had put more oil than you suggested. Is that bad for the generator. I noticed oil spots on the insulation bottom cover. I'll be patient and wait hoping that the oil will travel to the squealing bearings. The organ is inside the house at room temperature. I forgot to mention that some notes sound out of tune...is that caused by the generator for not being properly lubed. Bass pedals - This problem started after I moved the organ that now sits on a rug. I took your suggestion tilted the front of the organ and accessed the bottom of the pedals. I cleaned everything and checked if any of the swiched contacts were stuck. Everything looked ok and none were stuck. I shimmed the bottom of the organ so that the pedals have full travel but I still have the problem... every time you depres a pedal the 'B' note plays. Is there an adjustment required or is the circuit board bad. Best regards! Paul On 1/7/08, hammond-request at zeni.net <hammond-request at zeni.net> wrote: > > Send hammond mailing list submissions to > hammond at zeni.net > > To subscribe or unsubscribe via the World Wide Web, visit > http://www.zeni.net/cgi-bin/mailman/listinfo/hammond > or, via email, send a message with subject or body 'help' to > hammond-request at zeni.net > > You can reach the person managing the list at > hammond-owner at zeni.net > > When replying, please edit your Subject line so it is more specific > than "Re: Contents of hammond digest..." > > > Today's Topics: > > 1. Re: Pedal travel on 25 note pedal boards (John Griffith) > 2. Re: What are the appropriate ohms values for the cathode bias > resistors for the different output valve types ? (Geoff Williamson) > 3. Hammond B2 smooth Drawbars using M3 parts (Jordan Kersten) > 4. Bass Pedals (Leo Bynum) > 5. What are the appropriate ohms values for the cathode bias > (Kon Zissis) > 6. Re: Bass Pedals (Dave Bishop) > 7. Re: Bass Pedals (Scott Hawthorn) > 8. Re: Bass Pedals (Leo Bynum) > 9. Re: Bass Pedals (Christoph Kukulies) > 10. Hammond T400 (Paul Zizzadoro) > 11. Re: Hammond T400 (Dave Bishop) > > > ---------------------------------------------------------------------- > > Message: 1 > Date: Sun, 6 Jan 2008 18:44:55 +0000 > From: John Griffith <griffithjn at hotmail.com> > Subject: Re: [HAM] Pedal travel on 25 note pedal boards > To: <leo at leobynum.com>, "'The Hammond Forum'" <hammond at zeni.net> > Message-ID: <BAY104-W32FFB513AA34B97F09D0E5C24E0 at phx.gbl> > Content-Type: text/plain; charset="Windows-1252" > > A-100 here, early '60's > travel is 3/8 inch, about the same on blacks too. > john g > > > > > From: leo at leobynum.com> To: hammond at zeni.net> Date: Sat, 5 Jan 2008 > 18:09:22 -0700> Subject: Re: [HAM] Pedal travel on 25 note pedal boards> > > > > > It's much less that I would have guessed. I'm seeing a less than a> > centimeter (about 3/8 to 1/4 inch) at the toe end. The black notes seem to> > have a little less travel. > > Coincidentally I just installed 25 > micro-switches on the toe end of the bass> pedals of my B3 for MIDI triggers > for a PedMux 25/32 encoder. Let me know> how your approach works.> > > > -----Original Message-----> From: hammond-bounces at zeni.net [mailto: > hammond-bounces at zeni.net] On Behalf> Of Christoph Kukulies> Sent: > Saturday, January 05, 2008 7:48 AM> To: The Hammond Forum> Subject: Re: > [HAM] Pedal travel on 25 note pedal boards> > Paul Marshall schrieb:> > Hi,> > >> > Could anyone with a B, C, or A100 be kind enough to measure the pedal > > > travel (from 'at rest' to pedal down) at the console end? I am > > > building a MIDI> > > > Do you mean the full travel o! > r from "rest" to "make note"?> > > pedal board with ex-A100 pedals and > want to get this right.> > Many thanks,> > Paul Marshall (UK)> > M102+Leslie > 147> > > Christoph> --> Subscription Options/Unsubscribe/Archives: > http://www.zeni.net/hf/> Hammond-Leslie FAQ: > http://theatreorgans.com/hammond/faq/> HammondWiki: > http://www.dairiki.org/HammondWiki/> hammond at zk3.dec.com archives: > http://zk3.hammondforum.com/> > > --> Subscription > Options/Unsubscribe/Archives: http://www.zeni.net/hf/> Hammond-Leslie FAQ: > http://theatreorgans.com/hammond/faq/> HammondWiki: > http://www.dairiki.org/HammondWiki/> hammond at zk3.dec.com archives: > http://zk3.hammondforum.com/> > _________________________________________________________________ > Make distant family not so distant with Windows Vista? + Windows Live?. > > http://www.microsoft.com/windows/digitallife/keepintouch.mspx?ocid=TXT_TAGLM_CPC_VideoChat_distantfamily_012008 > > ------------------------------ > > Message: 2 > Date: Mon, 7 Jan 2008 06:33:10 +1100 > From: Geoff Williamson <electroboy at aanet.com.au> > Subject: Re: [HAM] What are the appropriate ohms values for the > cathode bias resistors for the different output valve types ? > To: The Hammond Forum <hammond at zeni.net> > Message-ID: <65CAE2AA-7E90-4991-8BF4-801E5B327BD8 at aanet.com.au> > Content-Type: text/plain; charset=US-ASCII; format=flowed; delsp=yes > > Kon, > > the value of the cathode resistor is dependent on the plate voltage > applied to the particular valve type. For experimental purposes you > could look at some schematics of guitar amp designs that use the same > plate voltage on self-biased EL-34s. The Matchless Chieftan springs > to mind for example. Various older Australian amps used this > configuration also, such as early Moody BA40 amps and some early high > power Goldentones too I think. Just google the schematics, you'll > find the ballpark resistor value that way. You could calculate it of > course, so if you haven't already done so you should download a > datasheet for the EL-34. If you mess with valve gear you really > should have a valve data book anyhow, which often list examples of > cathode resistor values for particular output valve pairs in AB1 > biased configuration. There are other factors to consider here too, > such as the output transformer design (I don't know enough about that > stuff to advise you here) which might limit the success of your > planned mod, or it might work out fine. If you want to check out a > proprietary design that switches from fixed bias to self-biased output > configuration, I think there was a Boogie amp that had this idea > incorporated. You might check that one out because if I recall > correctly there was more to that design than simply switching the way > you suggest. Perhaps it had additional features so that the amp could > be switched back and forth whilst playing, I don't know. Don't be > surprised if the mod doesn't give you the sound you were hoping for. > I know some of these designs give quite a 'dark' bluesy sound with > self-biased EL-34 outputs. Not so the Matchless Chieftan however. > > Arguably, this is OT for a Hammond list, unless of course you are > going for a variation on the Jon Lord sound...BTW, you'll probably > find a wealth more information on a guitar amp group, there used to be > plenty of hot rodders on those groups, tube amps groups etc. I'd be > surprised if you can't find good info in those archives. > > Geoff > > > On 07/01/2008, at 1:30 AM, Kon Zissis wrote: > > > Hi everyone. > > I would like to know what the correct ohms values and wattage ratings > > are for the cathode bias resistors used in valve amplifiers that > > have > > cathode biased output stages. > > What would be the appropriate cathode bias resistor values for the > > following power output valves : > > EL34 , 6L6, 5881, EL84 ( 6BQ5 ) , 6V6 , KT-66 , KT-88. > > > > ------------------------------ > > Message: 3 > Date: Sun, 6 Jan 2008 23:29:27 -0600 > From: Jordan Kersten <jordankersten at hotmail.com> > Subject: [HAM] Hammond B2 smooth Drawbars using M3 parts > To: <hammond at zeni.net> > Message-ID: <BLU123-W2085D2D55B1EF3C2498DD7A34F0 at phx.gbl> > Content-Type: text/plain; charset="iso-8859-1" > > > I'm currently working on a project to convert my B2 to non-ratcheting, > smooth drawbars. With the $400 for an entire 3-series set out of the > question, I am planning on using parts from an M3. I know this: the ratchet > assemblies use a single, pointed contact on the drawbar spring. The spacer > that the drawbar spring contact slides against is notched with the busbars > lying in the notches. Every two drawbars share one of these "spacers." I > know that the B3's, C3's and the M3 organs use a drawbar spring with 2 > contacts with a 1-ohm resistance wire between them. My question is, in the > 3 series drawbars, what does the double contact slide against? Do the M3 > assemblies have the same smooth "spacers" that the B3 and C3 assemblies > do? If not, can I use the notched spacers of the B2 and flip them over to > use the smooth side (using the smooth contact spring)? > > My plan is to use three complete assemblies from an M3. I will replace > all the spring contacts in the B2 with the M3 smooth ones. I have never > seen the inside of an M3 assembly so I only assume it has the same spacers > (the plastic piece the drawbar spring contact slides against) that the B3's > and C3's use. Is this correct? > > > -Jordan- > > _________________________________________________________________ > Get the power of Windows + Web with the new Windows Live. > http://www.windowslive.com?ocid=TXT_TAGHM_Wave2_powerofwindows_012008 > > > ------------------------------ > > Message: 4 > Date: Sun, 6 Jan 2008 22:45:20 -0700 > From: "Leo Bynum" <leo at leobynum.com> > Subject: [HAM] Bass Pedals > To: "'The Hammond Forum'" <hammond at zeni.net> > Message-ID: <000001c850f0$7dd0fb00$6501a8c0 at Montana> > Content-Type: text/plain; charset="us-ascii" > > > > > I have a set for my C3, but not for my B3. Anyone know where I can lay my > hands on some stray Hammond bass pedals? > > > > ------------------------------ > > Message: 5 > Date: Mon, 7 Jan 2008 16:56:07 +1100 > From: "Kon Zissis" <kziss at ozemail.com.au> > Subject: [HAM] What are the appropriate ohms values for the cathode > bias > To: <hammond at zeni.net> > Message-ID: <000001c850f1$ffa4f400$6401a8c0 at konpc> > Content-Type: text/plain; charset="us-ascii" > > Hi Geoff. > Thank you for your reply. > The plate voltage of the EL-34 valves in my Marshall JTM-45 is around > 402 volts and the screen grid voltage is 398 volts. > The plate voltage of the EL-34 valves on the Matchless Chieftain is 415 > volts and the screen grid voltage is 369 volts . > The two EL34's each have a separate 270 ohm cathode resistor and a 250 > uf cathode bypass capacitor. > > The Moody BA-40 has a single 130 ohms cathode resistor with a 50 uf > cathode bypass resistor for both EL34 valves. > The Australian Valve Amps website is quite useful for learning about > vintage Australian built amplifiers.: > www.ozvalveamps.elands.com <http://www.ozvalveamps.elands.com/> > > The various output valve data specs that I have do not show the > cathode resistor ohms values. > > I have Aspen Pittman's book "The Tube Amp Book 4th Edition' and this > has schematics of some of the Mesa Boogie amplifiers with the > "Simulclass"; feature. There are four output valves in push pull > configuration. All four output valves receive the grid bias negative > voltage. One valve of the ''push '' set and the other valve of the > ''pull'' set have the grounded cathodes but the cathodes of the second > ":push " valve and the second "pull " valve are connected together to a > SPST switch and this switch is connected to the ground. In the "Class > A" setting the ground is simply disconnected from these two cathodes. I > have never heard one of these amplifiers . > > On Hammond Wiki there is a modification showing how to use EL34 valves > in the Leslie 122 and this modification is a switch that brings in a 100 > ohms resistor in series with the stock 150 ohms resistor thus making > the total cathode resistance 250 ohms for when using the EL-34 valves > instead of the 6550 valves. > Considering that the Leslie 122 plate voltage is 415 volts and the plate > voltage of my Marshall JTMK-45 is 402 volts , then I think that a > cathode resistor value somewhere in the 250 ohms - 270 ohms region > might be OK for the Marshall JTM-45 cathode bias switch modification. > > Several years ago my friend lent me his old and very mediocre sounding > Australian built Rex Bass King BA - 60 amplifier that has two EL-34 > valves in it so that I can play around with it and modify it as a > learning experience . > I rewired everything inside to have the plexi Marshall 1987 specs > and this really improved the sound of the Rex Bass King and made it > great for electric guitar. With this you could now get the typical > Marshall sound at less than ear splitting volume levels . > > It was at this same time that I was browsing through my copy of the > book " A desktop reference of hip vintage guitar amps " by Gerald Weber > and this book explained that the cathode biased amplifiers produce a > sweeter more singing sound with sustain , and after reading this I was > curious to hear the cathode bias sound so therefore I read up more and I > learned how to wire up a DPDT switch that would create the cathode bias > / fixed bias switching configuration. > > After I tried out the amplifier in the cathode bias setting and then > the fixed bias setting , I noticed that the cathode bias setting > produced a nicer guitar sound with a more compressed "sponginess '' and > fatness even at clean volume levels. This was a real classic , warmer > 1960's type of sound . The fixed bias setting produced a "stiffer" sound > with a harder attack that would appeal more to punk rockers or modern > heavy metal rockers. > I have always preferred the fatter , more sweet and compressed sounding > 1960's / 70's guitar sounds both in clean and heavily overdriven mode > instead of the modern harsher and stiffer and often very trebly guitar > amplifier sounds. > > I eventually removed the cathode bias switch modification from the Rex > Bass King because I was not sure if I had used the correct cathode bias > resistor ohms value and my friend planned on selling the amplifier after > I had finished experimenting with it so therefore I did not want someone > to buy the amplifier and then have it break down. I don't remember > exactly what cathode resistor ohms value I used but it would most likely > have been somewhere in the 150 to 270 ohms range. I think that I also > used a 220 uf cathode bypass capacitor. > > A few times I did play my guitar preamp through my Leslie 122 > amplifier ( when it was still a 147 amplifier ) and then connected the > output to my Marshall quad box and this also had some of that nice > spongier sound. I assume that the sponginess is because the 122 / 147 > amplifier is a cathode biased amplifier. > All the best. > Kon > > Geoff Williamson wrote: > >the value of the cathode resistor is dependent on the plate voltage > >applied to the particular valve type > > > > ------------------------------ > > Message: 6 > Date: Mon, 7 Jan 2008 00:59:43 -0600 > From: "Dave Bishop" <xxcaptinxx at comcast.net> > Subject: Re: [HAM] Bass Pedals > To: <leo at leobynum.com>, "The Hammond Forum" <hammond at zeni.net> > Message-ID: <001d01c850fa$e1fb0670$6401a8c0 at davespc> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > > < > http://cgi.ebay.com/Hammond-B3-Bass-pedals_W0QQitemZ180203182374QQihZ008QQcategoryZ64429QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > > > > Regards, > > Dave Bishop > > > > ------------------------------ > > Message: 7 > Date: Sun, 06 Jan 2008 23:23:20 -0800 > From: Scott Hawthorn <organfreak at donobi.net> > Subject: Re: [HAM] Bass Pedals > To: The Hammond Forum <hammond at zeni.net> > Message-ID: <5.1.0.14.2.20080106232304.05aeca68 at mail.donobi.net> > Content-Type: text/plain; charset=us-ascii; format=flowed; > x-avg-checked=avg-ok-65CC2623 > > At 10:59 PM 1/6/2008, you wrote: > > >< > http://cgi.ebay.com/Hammond-B3-Bass-pedals_W0QQitemZ180203182374QQihZ008QQcategoryZ64429QQssPageNameZWDVWQQrdZ1QQcmdZViewItem > > > > Those are C-3 pedals. > > > > ------------------------------ > > Message: 8 > Date: Mon, 7 Jan 2008 01:44:15 -0700 > From: "Leo Bynum" <leo at leobynum.com> > Subject: Re: [HAM] Bass Pedals > To: "'The Hammond Forum'" <hammond at zeni.net> > Message-ID: <001f01c85109$7c77ca40$6501a8c0 at Montana> > Content-Type: text/plain; charset="us-ascii" > > > > I always assumed that B3 and C3 pedals were the same. I just took my C3 > pedals and they fit and play on my B3. Is there anything I'm missing here? > > Thanks! > > > > > -----Original Message----- > From: hammond-bounces at zeni.net [mailto:hammond-bounces at zeni.net] On Behalf > Of Scott Hawthorn > Sent: Monday, January 07, 2008 12:23 AM > To: The Hammond Forum > Subject: Re: [HAM] Bass Pedals > > At 10:59 PM 1/6/2008, you wrote: > > ><http://cgi.ebay.com/Hammond-B3-Bass-pedals_W0QQitemZ180203182374QQihZ0 > >08QQcategoryZ64429QQssPageNameZWDVWQQrdZ1QQcmdZViewItem> > > Those are C-3 pedals. > > -- > Subscription Options/Unsubscribe/Archives: http://www.zeni.net/hf/ > Hammond-Leslie FAQ: http://theatreorgans.com/hammond/faq/ > HammondWiki: http://www.dairiki.org/HammondWiki/ > hammond at zk3.dec.com archives: http://zk3.hammondforum.com/ > > > > > ------------------------------ > > Message: 9 > Date: Mon, 07 Jan 2008 13:07:42 +0100 > From: Christoph Kukulies <kuku at kukulies.org> > Subject: Re: [HAM] Bass Pedals > To: leo at leobynum.com, The Hammond Forum <hammond at zeni.net> > Message-ID: <4782160E.9030908 at kukulies.org> > Content-Type: text/plain; charset=ISO-8859-1; format=flowed > > Leo Bynum schrieb: > > I always assumed that B3 and C3 pedals were the same. I just took my C3 > > pedals and they fit and play on my B3. Is there anything I'm missing > here? > > > > Yes, the heel rest :) > > > Thanks! > > > > > > > > > -- > Christoph > > > > ------------------------------ > > Message: 10 > Date: Mon, 7 Jan 2008 08:45:12 -0500 > From: "Paul Zizzadoro" <pazizz60 at gmail.com> > Subject: [HAM] Hammond T400 > To: hammond at zeni.net > Message-ID: > <7c66a04b0801070545m69a8e615pfd2ed5ebf29c1ac0 at mail.gmail.com> > Content-Type: text/plain; charset=ISO-8859-1 > > Hello everyone, > > I am new to this forum and this is my first post. I have aT400 Hammond > which > I have not played in many years and not religiously oiled. > > I decided to get back into music and use the organ again.Because of years > of > neglet the organ now has the following problems: > > 1. A noisy tone generator. I added Hammond tone generator oil to both the > motor and the generator but the noise is still there. I'm not sure if I > added enough oil to the generator. The tag in the back of the organ says > to > add 2 - 10oz. of oil to each cup. Is this right...it seem a lot of oil to > me. I bought a standard bottle which contains only 4 fl oz > > 2. 12 bass pedal which plays the same 'B' tone no matter what pedal you > depress. > > You help and suggestion to resolve these problem is greatly appreciated. > > Best regards! > > Paul > > > ------------------------------ > > Message: 11 > Date: Mon, 7 Jan 2008 11:37:42 -0600 > From: "Dave Bishop" <xxcaptinxx at comcast.net> > Subject: Re: [HAM] Hammond T400 > To: "The Hammond Forum" <hammond at zeni.net> > Message-ID: <009101c85154$0222d8c0$6401a8c0 at davespc> > Content-Type: text/plain; format=flowed; charset="iso-8859-1"; > reply-type=original > > There are two capped oil funnels the the top center right and left sides > of > the motor that should get 5 to 8 drops each. The two funnels on the TWG > don't need more than two teaspoonsful in each, but it can take a week or > two > to travel to all the bearings. 4 oz of oil will last for years. > > If the organ is at less than room temperature its possible that you'll > also > get squeaky bushings. The solution is to use a space heater or a lighbulb > to warm the interior. > > As to the pedals, be sure that the organ is not on a pile carpet, or if it > is on a carpet, elevate the pedal side with a shim so that the pedals > don't > sink in. You can also tip the organ onto its front and clean the pedal > actuators of dustbunnies that may be causing the B pedal to stick. If > that > doesn't help, post back for more suggestions. > > Regards, > > Dave Bishop > > > > ------------------------------ > > _______________________________________________ > Subscription Options/Unsubscribe/Archives: http://www.zeni.net/hf/ > Hammond-Leslie FAQ: http://theatreorgans.com/hammond/faq/ > HammondWiki: http://www.dairiki.org/HammondWiki/ > > End of hammond Digest, Vol 10, Issue 6 > ************************************** >
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