Members Cowinacape Posted October 30, 2005 Members Share Posted October 30, 2005 Looking forward to the pics and clips! Glad to hear it worked the first time out for you as well, good stuff! Edit while I am thinking of it, How would you rate this kit over all, considering the instructions ease/complications of contruction, v.s. the finished product, and any sense of acomplishment with putting the kit together? Link to comment Share on other sites More sharing options...
Members Chaos Posted October 30, 2005 Members Share Posted October 30, 2005 Originally posted by Ancient Mariner Finished it! Oh, BTW it worked first time. Nice job Now lets hear soem sound samples Link to comment Share on other sites More sharing options...
Members PGS412 Posted October 31, 2005 Members Share Posted October 31, 2005 Originally posted by Ancient Mariner Oh, BTW it worked first time. Awesome!!!!! Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted October 31, 2005 Members Share Posted October 31, 2005 Hey Toni, looks very cool. One suggestion though: take out the big ass insulated star-ground resistor and wire a direct connection between the insulated ground and the chassis ground. Link to comment Share on other sites More sharing options...
Members satannica Posted October 31, 2005 Members Share Posted October 31, 2005 Well done mate! That looks phenomenal! I'm not suprised it worked first time, looks like the work of a brain surgeon right there! If you need help recording clips and stuff, I can lend you some gear, like a mic or sommat. Let me know! Or if my paycheck finally comes through (Reed = totall assholes) then I'll have me own kit... bwu hahahahahaha!!! Jon dude Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted October 31, 2005 Author Members Share Posted October 31, 2005 Originally posted by Duesentrieb Hey Toni, looks very cool. One suggestion though: take out the big ass insulated star-ground resistor and wire a direct connection between the insulated ground and the chassis ground. You tell me that NOW!?Out of interest, why? I can easily wire a bypass if I need to, as I soldered all the tags for the star together (I don't believe in the long-term conducting of interference fit connections).Pics:There are a few 'interesting' things that came up while building the amp. Wiring the tone controls and switches for channel 1 and gain for channel 2 is a mouse-milking operation. Without a good pair of fine, long nosed pliers it would have been impossible, as there's almost no space. The mains socket was made of a plastic that melts before the pins get hot enough to allow a solder connection. And as mentioned already, the wiring plan isn't clear about where the white wires sometimes go - I had to keep checking the schema to be sure.I'm very pleased that it seems to be working, so there's a huge sense of achievement. It was a LOT more complex than the last amp, and some of the wiring was much harder to complete due to lack of space. I only managed 5 mins with it last night, but the tones sound like they're going to be great. I'd be quite happy with the clean channel in a little tweed amp - from memory it had that class A/B characteristic wiriness - or maybe that's just my 'honeymoon' experience from last night.I've got a music practice this evening, and I'll take it along to see how it copes with a larger space. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted October 31, 2005 Members Share Posted October 31, 2005 Its a "anti-hum" resistor to stop ground loops, but in accidental failure inside the amp it puts current onto the chassis. Just bypass it please. There was a case of current on the chassis in the (german) Madamp board. General conclusion was to bypass it . . . Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted October 31, 2005 Author Members Share Posted October 31, 2005 OK, thanks for that. The one other thing I wondered about was the 125E OT, and whether it would cope with the bass frequencies adequately if I cranked the amp? It's unlikely to get cranked hard most of the time, but I just wondered....... I'd say Martin's done a good job with that design, and the kit just needs a couple of tweaks to the instructions to make it easier. Re-positioning the main board 1cm further into the chassis would help wiring, as would putting the earth rail below the board, rather than level with it. Alternatively turning the pots up the other way and re-arranging the wiring sequence would also fix it. Link to comment Share on other sites More sharing options...
Members Duesentrieb Posted October 31, 2005 Members Share Posted October 31, 2005 A better OT is always a good investment, Toni Just have a look on the Hammond sites - just keep in mind that some series are a pain in the a$$ when it comes to switch between three impedances . . . Link to comment Share on other sites More sharing options...
Members TheDarxide Posted November 1, 2005 Members Share Posted November 1, 2005 Bugger me, well done! I must say though, from reading the updates, and looking at those close ups, that I'm a little put off having a go myself.... I can solder, but i dunno if i can solder *that* good..... Link to comment Share on other sites More sharing options...
Members satannica Posted November 1, 2005 Members Share Posted November 1, 2005 Originally posted by TheDarxide Bugger me, well done! I must say though, from reading the updates, and looking at those close ups, that I'm a little put off having a go myself.... I can solder, but i dunno if i can solder *that* good..... I'm definately going to have a go and I'm by no means an amp or wiring god.Will let you know how it goes, sir!Jon Link to comment Share on other sites More sharing options...
Members TheDarxide Posted November 1, 2005 Members Share Posted November 1, 2005 Originally posted by satannica I'm definately going to have a go and I'm by no means an amp or wiring god. Will let you know how it goes, sir! Jon I'll let you do it wrong first I should be getting some cash for amps in the next week or so, and I was planning on ordering a kit for the xmas holidays.... Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted November 1, 2005 Author Members Share Posted November 1, 2005 Originally posted by satannica I'm definately going to have a go and I'm by no means an amp or wiring god.Will let you know how it goes, sir!Jon I'm certainly not either. The trick for me was to take my time and work through carefully. Before I started I went through the entire bill of materials, checking off every component (there are a lot!). I collected all resistors into sets of the same value and put masking tape on them showing the value AND the R numbers they related to. Ditto for caps. It's also a good plan to tick off each component on the BoM when you use it so that there is an automatic checking process - if you think there should be 3 1meg resistors left and you've only got 2 then you know you've made a mistake. I did make a few mistakes, but always found them quickly - 1 hookup wire in the wrong place and a resistor on V3 connecting a wrong pin. The other key advice is to always offer up the component to where it needs to go before bending/cutting wires - cut too short and life gets 'interesting'. If you have a prob then PM me and we can talk it through. Hope it's as painless for you as mine. Link to comment Share on other sites More sharing options...
Members igge Posted November 2, 2005 Members Share Posted November 2, 2005 That is a very neat wiring job you've done. Link to comment Share on other sites More sharing options...
Members Mikko Vainiala Posted November 2, 2005 Members Share Posted November 2, 2005 Originally posted by Ancient Mariner Finished it! Ok, there you go! (And perhaps lots of your future freetime too...its nothing but fun and a-d-d-i-c-t-i-n-g hobby!) Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted November 12, 2005 Author Members Share Posted November 12, 2005 FINALLY managed to make time to record (and I bought a small mixer to help). The playing isn't quite up to Gary Moore's level but should give an idea of what the amp can do. Volume was 'tolerable livingroom level' - too loud for non-guitarists, but not at stage levels. I struggled a lot to start with, trying to balance signal vs distortion and stuff but got there in the end. The quality of the MP3s has suffered a bit, but not enough to stop you hearing it properly.http://www.soundclick.com/bands/pagemusic.cfm?bandID=273037It will be obvious which are the Madamp clips.This is the longest I've played this amp so far, and it really surprised me. I love both the clean AND drive tones - there are a lot too - it's amazingly versatile. Link to comment Share on other sites More sharing options...
Members Chaos Posted November 12, 2005 Members Share Posted November 12, 2005 Very nice clean tone , i bet Clapton would love it So as the drive channel, it as a very pleasing tone.What is the speaker / cab you're using for these recording?Good job on the recording Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted November 12, 2005 Author Members Share Posted November 12, 2005 Thankyou.The speaker + cab are a bit naff. The speaker is a Celestion Rocket 50 and the cab is an MDF bass bin (complete with port) for the boot of a car! Both a few quid on ebay. This combination seems to work well together - better than my 70s Greenback in a home made solid pine enclosure. Link to comment Share on other sites More sharing options...
Members Whammyless Posted November 12, 2005 Members Share Posted November 12, 2005 Very nice! Link to comment Share on other sites More sharing options...
Members bcjames Posted November 12, 2005 Members Share Posted November 12, 2005 Thats awesome. Thats such a cool tone. Cant beat power tube saturation! Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted November 12, 2005 Author Members Share Posted November 12, 2005 Originally posted by bcjames Thats awesome. Thats such a cool tone. Cant beat power tube saturation! It's a little embarassing, but they were all recorded at lowish volume in my living room. Cranked I think it will sound glorious. Link to comment Share on other sites More sharing options...
Members Chaos Posted November 12, 2005 Members Share Posted November 12, 2005 I agree , very nice match for the amp / speaker cab combo.You managed to make a very good recording also with your mixer . What did you miked it with? Just curiosity Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted November 12, 2005 Author Members Share Posted November 12, 2005 A Shure SM58. It's all wrong - that's a vocal mic, placed about 15" from the speaker. Initially I tried an Audiotechnica 33a condenser mic, but that sounded really cold, and was too responsive to peaks. The signal went to a Behringer UB1002 mini-mixer, and I rolled the bass of a little because the cab was on the floor. From there it was straight into the PC (soundblaster PCI128 card) and recorded through Audacity. The hardest part was setting levels so that there was enough signal to the PC without clipping. The 2 mics also have very different output levels (the Audiotechnica is a low impedance mic with higher output, the shure is high impedance. Link to comment Share on other sites More sharing options...
Members Ancient Mariner Posted November 12, 2005 Author Members Share Posted November 12, 2005 Bed. Night all. Link to comment Share on other sites More sharing options...
Members bcjames Posted November 12, 2005 Members Share Posted November 12, 2005 Originally posted by Ancient Mariner It's a little embarassing, but they were all recorded at lowish volume in my living room. Cranked I think it will sound glorious. No way! Thats even better man! It really sounds like its got that bit in the sound you get from singing tubes. Certainly doesnt sound a 'boring' over drive. Definatly given me motivation to sort my P1 out! Link to comment Share on other sites More sharing options...
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