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Post by morbe on Jan 8, 2012 8:14:38 GMT -5
Nope, I'm going to keep this amp for a while. And I think I will just get the true black. But at least i didn't show you guys a picture of Elephant texture and zebra paint or rattle snake hide. But yes 3 yard is enough The amp is moderately tall but a bit in the skinny side. I think maybe 2 1/2 yards is enough. should be enough for waste and back pieces. I need to get the Grill cloth since thats what stink so bad.
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Post by cynical1 on Jan 8, 2012 10:45:13 GMT -5
...And I think I will just get the true black.... The call is yours, but as newey pointed out, the extra expense is not going to give you any return on the investment. What you want to look at is the thickness of the material, vinyl versus neoprene and the quality of the backing on the Tolex. If all things are equal go with the least expensive option. Spend the money on other places in the amp to get it working to improve performance and functionality. Man, that would have been cool... You find Zebra Tolex and I'm buying a few yards for my bass case... The cardinal rule is to measure twice and cut once. If you do a lot of Tolexing you can count on 5%-10% waste. This percentage rises based on your position on the learning curve. Applying Tolex isn't brain surgery, but there are some basic techniques that take a few to master. Let me suggest this. Take the Sunday paper and make a mock setup of the pieces you need to cover this amp. Do the back plate, sides and account for cuts or angles on the sides. Once you have the whole amp covered lay them flat and see how this works with the width of the piece of material in question. And you don't have to do the covering in one integral piece. If it's easier you can put a bottom piece in and make a long wrap around both side and the top, leaving two seams on the bottom where no one sees them...or you can do it in four pieces with the sides overlapping on the top and bottom. Sometimes the 4 piece covering is easier starting out, especially on large cabinets that you're going to have to move quickly on once the adhesive begins to tack up. Back in the day we had a few different widths of material to accommodate different cabinet sizes and back panels. You're going to have to work with whatever Hancock stocks. Yes...stick can be a problem with grill cloth...especially when you have 4 loudspeakers propelling said stick into the room every time you play... Here you have quite a bit of latitude. You can go authentic, or you can experiment. It all depends on whether you plan to gig or just record on the amp. Genuine Fender grill cloth does get pricy, but they know people will pay it. I can't help but feel that the same people claiming the grill cloth is part of the "mojo" aren't the same ones charging $29.99-$42.99 a yard for it... I pulled the fabric on my cabinets and used perforated metal. I just painted it black and was done. I've got a buddy back in Chicago who uses what looks like dive bag fabric that he soaks in a resin and presses into a mold. You can throw a beer bottle into this stuff and it just bounces off... The purpose is to protect the speakers while still allowing the sound to come out. As long as it does that you're fine. One thing about organic fibers in grill cloths is that they can absorb all kinds of odors and stains...as I believe you've discovered... Happy Trails Cynical One
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Post by reTrEaD on Jan 8, 2012 13:41:31 GMT -5
I think his point was that once he start adding circuitry to the amp I take a chance that tone will be lost. You won't "lose tone" from modifying the circuit that supplies the bias voltage. Two pots, one pot, makes no difference tonally. It only makes a difference in being able to bias the tubes properly. So if anything, you'll "gain tone", if you adjust the bias to the optimum value for each tube. He knows I'm a restorer and not a modder. Restorer, modder, whatever. Changing a perfectly good transformer so you can get a 5v winding to run a tube rectifier is expensive. and as was said earlier, an '81 will probably never have much "vintage value" anyway. This is worth keeping in mind when making all your decisions. You're always going to be upside down on this amp. How much money you put into it should be based mostly on what it's worth for your personal enjoyment. If the additional cost for it to look "authentic", gives you great satisfaction, do it. If "close enough" looks good to you, do that. Let me suggest this. Take the Sunday paper and make a mock setup of the pieces you need to cover this amp. Do the back plate, sides and account for cuts or angles on the sides. Once you have the whole amp covered lay them flat and see how this works with the width of the piece of material in question. Be careful if you use the comic section. You might lose track of the purpose of this endeavor.
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Post by morbe on Jan 16, 2012 10:21:59 GMT -5
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Post by cynical1 on Jan 16, 2012 12:34:59 GMT -5
Hey, for your first Tolex job I'd say it looks fine. Putting this stuff on is a bit trickier then it looks in other people's pictures...as you already know.
That was a good size box to be hefting around for your first Tolex experiment and your corners and seams don't look bad. You bring up a good point...a healthy supply of sharp single edge razor blades and a few good metal straight edges of different sizes are important to the process. And black magic marker is perfectly acceptable in this instance...you wouldn't be the first...
I gotta +1 you on this project...even though I'm still scratching my head...
So, what's the plan for the grill cloth?
Happy Trails
Cynical One
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Post by ijustwannastrat on Jan 16, 2012 13:24:33 GMT -5
I must say, that is one purty box. Also, do you plan on keeping the original silver-face? I hope you do. Black-face is cool (although in some cultures it is unacceptable ), but those silver-face amps just have a look to them that I dig... Once again though, beautiful job on the tolex.
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Post by sumgai on Jan 16, 2012 19:07:04 GMT -5
Also, do you plan on keeping the original silver-face? Required. Look closely at the controls.... see that fourth pot in the Normal Channel? This thing is a ProReverb in Super's clothing. With the exception of the output transformer, everything's the same, no holds barred. BlackFace Supers never had that fourth control, hence there won't be a "true" reproduction faceplate on the market. Less-scrupulous faceplate makers, however.... In my time, I 'blackfaced' more silverface amps than I can remember. (There's a definite gap in my audit trail, sorry to say.) In most cases, the owner didn't bother with putting on a black faceplate. I think now that I wouldn't've done it to my amps, either, unless the 'plate had become damaged beyond all recognition. To stay on topic... I've done what, something like 6, or maybe 7, re-Tolex jobs. It ain't as easy as it looks, the recommended glue sets up way too quickly. One learns as one goes, and one gets better at it each time. So all I can say is: +1 to morbe - Good Job! ;D BTW, when it comes to installing the speaker grill covering (you already know, or will soon find out, that it ain't cloth, it's plastic!), you make it reasonably tight, without stressing yourself out about it. Then take your wife's hair dryer, and use that to shrink the plastic the rest of the way to being tight!! Common 'trick', but almost never disclosed outside of the Inner Circles. Keep posting pictures, and when it's done, post a soundclip or two! sumgai
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Post by morbe on Jan 16, 2012 19:52:09 GMT -5
Thanks everyone! I enjoyed doing it, but as you already well know and as I have mentioned numerous times. I'm a do it your selfer. Alot of what the white you also see is a wax marker my mother uses for sewing though i didnt know it was waxed based until i tried to remove it. so you might see a faint "Back" or "Front. But I did a lot of research on the web. lol youtube saves the day again. Also, do you plan on keeping the original silver-face? Once again though, beautiful job on the tolex. Yes I plan to keep it as original as possible. But as for Modding of any sort. I was talking about modding with Frank My amp tech and he said that if the "output" transformer ever goes out. (I think it was the out put transformer he states that with my concern to keep it original as possible, he said " the output transformers are hard to find for these but He can put in a 50 watt OT from a bassman and make it sort of like a bassman. again he blurted out technical jargon i really need to start paying attention to and learning. Plus he gave me the box of old caps. They dont look old? but Is this customary? I dont want them! Thanks for the tips on the grill cloth! Thanks every one, Ill keep everyone in touch with progress. but Blackface amps silverface amps and whatever its worth its mine now and its going to be my main rig. Thanks everyone.
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Post by cynical1 on Jan 16, 2012 20:26:14 GMT -5
Plus he gave me the box of old caps. They dont look old? but Is this customary? I dont want them! A good tech will always give you the dead or replaced parts back. He want's you to know what work he performed and what was replaced\repaired. This is not a bad thing. Beware the ones that don't give you your old parts back. HTC1
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Post by sumgai on Jan 17, 2012 2:14:18 GMT -5
I was talking about modding with Frank My amp tech and he said that if the "output" transformer ever goes out. (I think it was the out put transformer he states that with my concern to keep it original as possible, he said " the output transformers are hard to find for these but He can put in a 50 watt OT from a bassman and make it sort of like a bassman. Not quite true, but then again.... Make sure that Frank is talking about the old-school, original Bassman (or the reissue), the one with 4 10" speakers (on which the Super is based). The difference is, most Bassman amps made since then have only two speakers (JFrankParnell has an exception to that rule), so the Ohms rating is different from an amp made to use 4 10inchers. Figure it this way. Leo never used anything except 8Ω speakers. (Well, at least not since 1958 or thereabouts....). And whenever he needed more than one, he always wired them in parallel. Now, knowing as we do that resistance and impedance both add in series, and divide in parallel, we can see that two 8Ω speakers will always present 4Ω to the amp's output transformer, and that 4 such speakers, in parallel, will always present 2Ω to the output transformer. That said, we can see why Leo stocked two different tranformers for the two kinds of amps. (Well, beside the need for different power levels, such as Showman/Twin versus Super/Pro/Bassman, etc.) If needful, there are several transformer makers out there that will be happy to sell you a new tranny that looks, and more importantly, acts exactly like the original Fender part. But in point of fact, and it's a little known fact at that, by the time your amp came off the assembly line, Fender was cutting its inventory left and right. And wouldn't you know it, some bright young lad finally stood up and said, "Hey, wait a minute. If we're using a transformer in the Twin that has four tubes and expects to see 4Ω, then why can't we use that same part in the Super, where there are only two tubes, which means that the amp will expect to see... 2Ω? After all, the impedance ratio is the same for each amp." In other words, he was suggesting that the inventory shelf need hold only one part, instead of two. And so it went. Your part may, or may not, be the larger version of the two possible sizes. There's no easy way to tell, except by the part number itself. Either cast around the 'net for yourself, or have Frank check it out for you. If it's the larger of the two, then you'll play Hobb trying to fry it. ;D HTH sumgai
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Post by reTrEaD on Jan 17, 2012 15:07:31 GMT -5
I was talking about modding with Frank My amp tech and he said that if the "output" transformer ever goes out. Let's hope it never comes to that. You've already got a ton of money into this.
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Post by thetragichero on Jan 17, 2012 20:01:39 GMT -5
in that unfortunate case, classictone should have a transformer for what you need if i were on a pc i would look it up and post a link, but as it is i'm on a spacephone stealing the bar's wifi because we showed up four hours early for the show (damn my efficient driving; if our drummer were driving we'd still probably be on the road
+1 for the tolex job and keeping it silverface... i happen to LOVE silverface deluxe reverbs like the one my father had when i was growing up
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Post by morbe on Jan 19, 2012 11:39:19 GMT -5
So i'm dual saving for the rest of the amp work and speakers. I currently have ceramic 25 watt fender speakers but im hearing a lot of back and forth on alnico magnet speakers. Mainly jensen alnico that run about 100 buck a piece! Is there really a difference here or is it another endless debate like mexican fenders vs american or tubes vs solid state?
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Post by reTrEaD on Jan 19, 2012 13:47:35 GMT -5
Is there really a difference here or is it another endless debate like mexican fenders vs american or tubes vs solid state? wait ... WHAT?
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Post by morbe on Jan 19, 2012 19:47:32 GMT -5
Just saying... Well......at least with mexican strat vs.american strats its 50/50. Split right down the middle with pros and cons. Maybe tube amps vs solid states was a bad example. Most peeps prefer tubes at least i do. But really whats the real deal with alnico?
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Post by reTrEaD on Jan 20, 2012 21:54:36 GMT -5
The thing that made me wtf, was "Is there really a difference..." 1 - Fender American -vs- Fender Mexican, there is DEFINITELY a difference. They use different bridges and different pickups. Regardless of the rest, there is a difference. End of story.
2 - Tubes -vs- Solid state just made me facepalm.
3 - Alnico -vs- Ceramic: Yes they do sound different. But the difference is subtle. Alnico magnets are expensive to make. So they cost much more. Instead of investing more in magnets, I personally would look for speakers with a better basket, surround, cone, higher efficiency and smoother frequency response curve. YMMV.
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Post by morbe on Jan 23, 2012 16:02:41 GMT -5
Right now Im trying to get the grill cloth straightened out so I can put some on, Though the best i can find is reproduced material that is too thin IMHO. I have plenty of life left in the speakers I currently have, I can wait on those. I just need to get stuff that will make it look cleaner. It Plays AWESOME though I might have to get some sort of attenuator or guitar pedal so I can get better tone with less loudness. LOL
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Post by ijustwannastrat on Jan 23, 2012 17:13:04 GMT -5
If you can swing it financially, I hear the THD Hotplates are really good attenuators. With my tax return, I'm either going to get one of those, or a 15W head.
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Post by sumgai on Jan 24, 2012 5:17:16 GMT -5
morbe,
Another possibility, you could drop the plate voltage down to about 350vDC, and plug in a pair of 6V6's, ala the Deluxe Reverb. Cuts your power in half, and probably doubles your tone! ;D (But your bias voltage may also need adjusting, check it before running the new tubes up to full blast.)
Popular mod for dual-6L6 or dual-EL34 amps, and it can be set up with a switch so that side-by-side comparisons can be made. (Not instant side-by-side, mind you - you have to pull hot tubes and plug in the opposite set, as well as flip the switch.)
HTH
sumgai
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Post by reTrEaD on Jan 24, 2012 22:10:49 GMT -5
Another possibility, you could drop the plate voltage down to about 350vDC, and plug in a pair of 6V6's, ala the Deluxe Reverb. Cuts your power in half, and probably doubles your tone! ;D (But your bias voltage may also need adjusting, check it before running the new tubes up to full blast.) Can of worms, imho. Huge disparity in bias voltage between the 6L6 and 6V6, but no danger of harming anything when changing to 6V6s. The 6L6 bias voltage will be roughly -55V. 6V6s will have almost no plate current with that kind of bias voltage, until you dial it down to about -35v or so. But that's the easy part. Fender used a 6.5k primary impedance for 6V6s. This transformer has a primary impedance of 4k. So you won't get an optimum match. Expect less power output. But then there's the real question... How to waste about 150v on the B+ supply? Before you suggest a tube rectifier (still won't drop that much), remember there is no 5v winding on this power transformer. Figure it this way. Leo never used anything except 8Ω speakers. (Well, at least not since 1958 or thereabouts....). And whenever he needed more than one, he always wired them in parallel. Now, knowing as we do that resistance and impedance both add in series, and divide in parallel, we can see that two 8Ω speakers will always present 4Ω to the amp's output transformer, and that 4 such speakers, in parallel, will always present 2Ω to the output transformer. That said, we can see why Leo stocked two different tranformers for the two kinds of amps. (Well, beside the need for different power levels, such as Showman/Twin versus Super/Pro/Bassman, etc.) Mostly true. But never say never. The Champ used a 4 ohm speaker. And the Blonde Dual Showman used 16 ohm speakers. And then there's the amp we're talking about in this thread. Granted, it was designed and built after Leo had left the building. But it uses 16 ohm speakers.
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Post by sumgai on Jan 25, 2012 2:15:43 GMT -5
Another possibility, you could drop the plate voltage down to about 350vDC.... [T]he real question... How to waste about 150v on the B+ supply? Before you suggest a tube rectifier (still won't drop that much), remember there is no 5v winding on this power transformer.Well, my favorite trick is to insert a calculated-size zener diode into the power transformer's HV center tap. The higher the voltage rating, the larger the voltage drop, hence the lower the B+ to the tubes. Works like a charm. ;D Good catch, 'Tread. I shoulda known better. Probably should ask morbe about that one...... May I refer you to the one, the only, Fender Field Guide, wherein we'll find..... 1963-1967 Fender Super Reverb(Psst.... click on the image for a nice surprise. ) As it happens, there's also another little tidbit on that same site, I'm sure morbe won't be upset to find this: 1968-1981 Fender Super ReverbThe whole Super line of amps started in 1959 or 1960, depending on who you're listening to. But they didn't adopt the 4-10" form factor until 1963, everyone's pretty much agreed on that. Clearly, Leo was not only still in the building, but very much guiding the development of this, as well as all other amps wearing his name. Score: 1 for each of us, so the party is still going strong on a good vibe! ;D HTH sumgai
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Post by reTrEaD on Jan 25, 2012 9:58:00 GMT -5
Yes, I'm familiar with the ffg. But this is an '81. The latest schematic the FFG lists for a Super is from 1970. Schematic Heaven is a better source of info for this particular amp. www.webphix.com/schematic heaven/www.schematicheaven.com/fenderamps/cbs_70w_mstrvol_pullsw_super-pro-bmstr_rev.pdf The whole Super line of amps started in 1959 or 1960, depending on who you're listening to. Some say the line started in '47 with the Dual Professional. But the name "Super" wasn't used until '48. But they didn't adopt the 4-10" form factor until 1963, everyone's pretty much agreed on that. Not everyone. I've heard people argue that the brown Concert was actually a "Super". If you compare the brown Super and the brown Concert to the blackface Super, it's difficult to argue with that...
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Post by sumgai on Jan 25, 2012 13:17:49 GMT -5
Well now we're splitting hairs. The Concert was what came on the scene as a 4x10 in 1959. (Essentially a Bassman redecorated as a guitar amp.) The Super was present as a 2x10, but when Leo brought out the whole X-Reverb line, the Concert got re-badged as the VibroVerb, only to be renamed shortly thereafter as the amp we all know and love, the SuperReverb. The rest, as they say, is..... sumgai
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Post by reTrEaD on Jan 25, 2012 14:19:10 GMT -5
Well now we're splitting hairs. No argument about that. The musical-chairs naming game going on at Fender was more than bizarre. The Concert was what came on the scene as a 4x10 in 1959. (Essentially a Bassman redecorated as a guitar amp.) That's a rather unusual way to look at it. Bassmans of that era were still in tweed. No tremolo, and the two channels shared the same tone controls. The circuitry on the brown Concert was almost exactly the same as the brown Super, with the exception of the output transformer and NFB resistor. The Super was present as a 2x10, but when Leo brought out the whole X-Reverb line, the Concert got re-badged as the VibroVerb, only to be renamed shortly thereafter as the amp we all know and love, the SuperReverb. No, the Concert continued as a 4x10 for several years in the blackface era. Basically a SuperReverb minus the reverb (and minus the newly added "middle" control. Or another way of looking at it: The "Concert Reverb" was badged as the SuperReverb. The brown VibroVerb introduced in early '63 was very much a brown Super (2x10) with reverb added. Late in '63 this was changed to a blackface with 1x15. Crazy innit?
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Post by asmith on Jan 25, 2012 14:30:33 GMT -5
I'm not a mod.
From the point of view of a lackey, this is getting really tiring.
I must imagine Morbe would like to trade in his ringside tickets for an answer to his question round about now.
I'm still not a mod.
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Post by reTrEaD on Jan 25, 2012 15:08:06 GMT -5
I'm not a mod. From the point of view of a lackey, this is getting really tiring. Seriously? Having a conversation on a related topic often happens. Sumgai and I may not be in agreement, but that's not at all uncommon in a discussion. In fact, that's generally the mark of a useful conversation. I don't take anything that he has said as being a personal affront to me. I don't see anything that I've said as being a personal affront to him. I must imagine Morbe would like to trade in his ringside tickets for an answer to his question round about now. Fair enough. Which of his questions are you referring to?
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Post by sumgai on Jan 25, 2012 15:28:44 GMT -5
Ace, ("Lackey" indeed! A resounding "Huzzah" to you, sir!) I agree wholeheartedly with reTread.... no offenses have been recorded for either side of this "debate". And at least in America, the saying goes "no harm, no foul". Here's hoping that the intention of that sentiment transfers correctly to the UK brand of English. ;D Not to say that sometimes I wonder just where 'Tread gets his info, but that's neither here nor there, is it. But c'mon, man, ya gotta admit, this sure beats beating on poor ol' morbe for having bought the thing in the first place, eh? I mean, we spent, what, several posts on the first page of this Topic just thrashing him severely about the head and shoulders - weren't you (or anyone else) getting tired of that? As the SysGawd, I can honestly say that I was watching the Mod-O-Meter pretty closely.... Suffice it to say, morbe isn't the only one who was glad to see the tone of this thread take a turn for the serious in helping him out.
Just to move things back along the track.... [glow=red,2,300]Paging Member morbe! Paging Member morbe![/glow]Have we at least somewhat answered your latest round of questions yet, or are you still in a quandry? Inquiring minds want to know! sumgai
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Post by morbe on Jan 31, 2012 10:50:26 GMT -5
I still havent done any thing with this amp. I found a work around with the thin grill screen and that is to lay a very thin black linen material behind it so you cant see through to the speakers. I was debating if i want to go with faded grill scren material or just get the new stuff. I think i might just get the new stuff. No sense in restoring it to its former glory and making it look vintage. I mean folks dont restore classic cars to make them look like they sat in he back yard for 30+ years. I decided to not go with a hot plate, fact of the matter is the other guitarist in our group is still learning how to play with a group with two guitarists. I have explained to him repeatedly that he should not concentrate too much on hearing his own amp and for him to think about listening to the entire mixture of the instruments combined. If he thinks his amp is too low i tell himm stop playing and if he can hear a difference, then his amp is loud enough. But slowly as the night goes on his amp gets louder and louder. I just dont want to start cranking my amp becuase i will drown everyone out.
It sounds great! Very nice tone! I still need new knobs and pots. And the chrome pieces. But right now im just enjoying what i got. All in due time, i tried to get some recordings on here but it was an epic fail. I cant find a place to upload simple mp3 files to share. I have to make videos? And i loose sound quality. I have some nice recordings where the amp is miced with an directional amp mic about an inch away from the screen and a condenser mic in the room in proximity to the amp but not too close that sounds great and really showcases the amp.
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Post by cynical1 on Jan 31, 2012 11:20:17 GMT -5
...I cant find a place to upload simple mp3 files to share... Let me help you out with that one. There are a boatload of places to push your tunes on-line, but these two have been the most reliable for me: [a href=" www.soundclick.com/"] www.soundclick.com/[/a] for .mp3 files ONLY [a href=" soundcloud.com/"] soundcloud.com/[/a] for just about everything. Both are free to sign up for. You can drop some coin for more time\space and features, but for just bouncing files the free account is more then sufficient. The biggest difference between the two is that SoundClick puts a 10MB limit and a 128 bit cap on the quality of your files on the free account. SoundCloud counts off your storage by running time of your tracks. I believe the cap is 60 or 120 minutes for free, but it will tell you when you sign-up. The advantage here is that you can use .wav files, or other low loss formats to make your tracks sound better. As I said, there are a multitude of sites out there, and I'm sure others will chime in with their picks. Happy Trails Cynical One
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Post by morbe on Feb 6, 2012 8:02:12 GMT -5
And the battle restoring this amp goes back a bit as i tried to work on the amp myself. (gotta live and learn i guess) well i had a scratchy pot and desoldered it, removed it took it apart and cleaned the contacts with and eraser, which worked and is something ive done on electronics before. Resoldered and installed it and every thing was good UNTIL. I tried to fix the vibrato. I thought "maybe its the tubes?" So i pulled and reseated all the preamp tubes, reverb tubes and basically all the smaller 12ax7 type. Though when i plugged my strat in it. I got a realy bad high tone buzz. A buzz i dont think was there before i pulled the tubes. At this point the tone selector was activating two pickups so i should have gotten any buzz but it was there. A mid pitched hum. But i could touch the guitar strings and he hum got quiet, still ther but very quiet. Lol i was playing the amp with the strat barefoot on tile floor and noticed that when i lifted my feet off the ground the noise got a little less. So i started thinking, maybe i did mess something up while working on the pot. So after some google searches i then, started to trouble shoot the amp and guitars. And here is what i found:
took chassis out of the box with all tube intact remained conected to speakers and poked around with a drum stick listening for a loose ground connection. (None could be found)
Tried both channels, (hum is evident in both channels)
*this is where i start to suspect maybe its the guitar*
Tried another strat style guitar with same settings, tone knobs high and tone selector in the 4th position. (noise was there but not as loud. Had both kramer style strat and fender strat wired and plugged then in alternating betwen the two the noise is there with both but louder with my fender strat. They both will produce the same level of hum when the fender strat is plugged into the number 2 input and the kramer strat is in the number 1 input. The hum is almost non existant with a true humbucker type guitar.) *i know that last comment will make me seem that i dont know what im doing but i know single coil pickups are noisier than humbuckers, its just that i dont remember it sounding that noisy with two pick ups active. *
Put a cable in my strat with same settings listed above and tested ohms from strings to the sleeve and it peak when i initially at about 400 of course but then stablized a slip sec later. And flattened out dancing from 0-4.
Bofore.i.get all the negative.comments can i please state and ask the following.
Im not as worried the amp has an issue since a true humbucker guitar will not replicate the noise. I plan to replace the pot with a 1meg pot. Since the original is 999k pot. Come to find out the capacitor for the vibrato was not replaced! But i was read that this was the main culprit, the vibrato i dont think ever worked. The cap is a 5mf 50v but i was told that newer capacitors are stronger and i should replace it with a (recalling from memory.may be wrong) 4.7mf 46v capacitor. Does that sound right? Also will copper shielding help with this noise or is that only for single coil noise btw forgot to mention the mid range hum i get from this amp is there in all tone selector positions 1-5
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