Alien

I remember them. Solid (if a little chunky) necks, cheap & cheerful hardware and electrics, god-awful plywood bodies with 1/2 inch thick polyester all over them. Andy

[quote name='mcgraham' post='212586' date='Jun 4 2008, 04:19 PM']May I ask what the exact final dimensions will be? Mark[/quote] You may The case is 220x165x51mm. Add on a bit for connectors, knobs and feet and you're looking at about 220x180x55. Haven't weighed it yet, but should be under 2kg. [quote name='alexclaber' post='212604' date='Jun 4 2008, 04:50 PM']Very neat! Two of those amp modules bridged into my big 15"+6.5" as an active cab would be scarily loud and light. Do you think you could run a simple preamp off that SMPS to give you a tiny head for non-tweakers? Alex[/quote] The SMPS has an auxillary output of +12/0/-12 V @ 500 mA, ideal for running a pre, crossover or pretty much anything else you might want to stick in there. It would probably be possible to get a preamp section into the case I've used. A smaller AC input would allow the modules to move back a bit, which should leave room for a PCB up front. Might have to look into that :brow: Andy

Having read Mottlefeeders post, I've realised that I have approached this build as though it was a DIY project for myself. With that in mind, I've made a couple of changes and generally tidied up a bit. First, the new tidier (and probably safer) arrangement of the mains leads. [attachment=9287:PICT0384.JPG] Next, amp power leads, speaker leads and input lead all tied off and tidied. [attachment=9288:PICT0386.JPG] The first end panel on. [attachment=9289:PICT0387.JPG] Nearly ready to go. Visible (just barely) in the foreground are the indicator LEDs for Power (blue) and Clipping (red). [attachment=9290:PICT0388.JPG] Once it's all together, it's time for a load test. I'm going to give it a couple of straight hours running just below clipping into a dummy load, wired with a speaker in parallel so I can listen for any odd noises. Hopefully, the case will act as enough of a heatsink that the amp won't need a fan. Andy

[quote name='Adam.M' post='210891' date='Jun 2 2008, 01:25 AM']I LOVE the look of a marhsall 4x12 over any other cab i've ever seen[/quote] If you like that look, you could try a BFM Omni 15. They look like 4x12s with the right grille on - it wouldn't be hard to do one in black Tolex with white piping. [url="http://billfitzmaurice.com/phpBB2/viewtopic.php?t=5880"]Omni 15s[/url] Andy

[quote name='dood' post='209216' date='May 29 2008, 10:03 PM']I just wanna take an opportunity to say what an absolute diamond Andy is. This is a fantastic build to see coming along. Thanks for all the things you have done for me as well mate. My Bass Clef badge is still doing strong on my car it looks the proverbial t*ts! .. as is that wicked wrap stuff you let me have for my piles of cables. Dare I mention the nail varnish your good lady sent me??? ;o) Take care mate! chat soon Dan[/quote] Cheers bud! [size=1]Cheque's in the post by the way[/size] Andy

Other than for testing purposes, I'm not planning on using it at all I'm actually building it for Froilan. Andy

[quote name='benwhiteuk' post='209161' date='May 29 2008, 09:05 PM']looks like a fantastic little build. If you don't mind me asking - how much did all the parts cost? Not that I'm likely to build one myself but I'd just be really interested to know how much a build like this is likely to cost. EDIT - Is this - [url="http://www.coldamp.com/opencms/opencms/coldamp/en/products/packs/active_speaker_30/"]http://www.coldamp.com/opencms/opencms/col...ive_speaker_30/[/url] - the 'kit' that you're using @ 250 Euros?[/quote] Yup, that's the kiddie. If there's sufficient interest, I may build a small batch of these amps. I haven't calculated a final price yet, but it's likely to be around £400. Andy

So, the build continues. Having (finally) received the last few bits from CPC, I can really start to make a go of it. First, the case, with all the necessary holes (plus a few unnecessary ones - the filtered mains inlet took up more space than I thought, so I had to move the power supply right to the fromt of the case) [attachment=9177:PICT0376.JPG] Amp and power supply fitted. The mains inlet is the large silver block at the top left of the chassis. It's a Schaffner unit, rated at 6 Amps, with dual fusing and AC switching (ie. both live and neutral are fused and switched) [attachment=9178:PICT0377.JPG] You can see from this shot how little space there was between the filter and the power supply. It took a bit of persuasion to get it in! [attachment=9179:PICT0379.JPG] Next here's a shot of the back panel with the mains filter and Speakons fitted. Behind the unit are the 2 harnesses for wiring the Speakons to the amp, and to the right of the shot is the Neutrik XLR/jack combo which will be the input socket. [attachment=9180:PICT0380.JPG] Not much further to go now! More tomorrow with a bit of luck. Andy

Look into the Zoom B2 / B2.1u - quite highly rated by many on here. The drum machine is pretty basic, but it's OK for jamming along to. Andy

[quote name='fretmeister' post='208441' date='May 28 2008, 10:22 PM']I used to use a Boss EQ20 double pedal thing. I used 3 basic settings - Off, bass boost, treble cut for dub type things, mid boost for solo passages. It was very good.[/quote] Plus the one. I still use mine from time to time - set up a good basic sound with the amp, then use the memory and live settings as 2 extra channels of EQ. Andy

This build came about after BC member [u]s u y *[/u] (Froilan) posted a thread about the lack of small, light power amps at reasonable prices. I reckoned that a digital power amp with switch-mode power supply would fit the bill. After a bit of umming and aahing, and a couple of false starts, here's the build in progress. The amp module is a BP4078, from [url="http://www.coldamp.com/opencms/opencms/coldamp/en/index.html"]Coldamp[/url]. It really is tiny, and very light. Here's a pic (with a pick) [attachment=9065:Amp.JPG] The amp will supply 400 Watts @ 4 Ohms, 240 Watts @ 8 Ohms. OK, next comes the power supply - this is almost twice the size of the amp, but that's still pretty small, especially compared to a linear power supply, which would be 3-5 times the size and 5-10 times the weight. [attachment=9066:PICT0373.JPG] It's all going into an extruded aluminium case from [url="http://www.hammondmfg.com/"]Hammond[/url]. It's anodised black, with matching endplates and a slide out lid/base section. It's gonna be a bit tight getting the two modules in there! [attachment=9067:PICT0374.JPG] More details as the build goes on! Andy

[quote name='bean52' post='203152' date='May 20 2008, 07:06 PM']But I've laid out several hundred quid before on a flute for her that has now resided in a cupboard for a couple of years, to say nothing of the lessons. I've given up on her taking it up again because admittedly it's not much of an instrument for a proto-emo/goth adolescent.[/quote] If she's really against playing the flute, there's your solution - sell it or trade it in against a bass. If she subsequently decides that the bass is not for her, then you haven't got 2 unused instruments kicking about the house, just 1. Also, plus yet another one on her not being too young to join a band. You're never too young or too old. Andy

[quote name='Higgie' post='200859' date='May 17 2008, 02:54 AM']I've tried it, but it's hard, as I'm powering it from only 9 V, so I can't change the voltages for the sepetate batteries. I will definitely look into it some more though.[/quote] If you're still using the converter I made for you, you're unlikely to get much of a result. The converter uses a dual rail DC-DC converter and a pair of regulators (+9V and -9V) so it'll pretty much supply the same voltage regardless of what goes in. Andy

[quote name='umph' post='197857' date='May 13 2008, 12:01 PM']Was thinking of going for a 2X15 that i'd be able to wire in stereo so would be able to choose between using one speaker for home or two for louder gigs etc.[/quote] It won't get much quieter with only one speaker running, as the other will work as a passive radiator (an untuned one, which will play havoc with your sound)). The difference between having one or two drivers operating into a fixed volume will be massive in terms frequency response, unless you're going to seal each driver into its own chamber, in which case just build a pair of 1x15s anyway! Andy

[url="http://www.ibanez.co.jp/products/amp_page.php?area_id=3&ampl_id=63&year=2008&cat_id=5&series_id=97"]This[/url] is probably the smallest amp you'll get - they sound pretty dire though. Andy

I wouldn't touch any of the three with the wet end of a sh*tty stick. There are good tutors to be found all over the place, or failing that, some great players who'd probably be more than happy to give you some pointers. Keep looking. Andy

[quote name='The Funk' post='190747' date='May 2 2008, 05:50 PM']Would you mind doing a build diary for this?[/quote] No worries. Probably won't be a lot to see though - one black box full of circuitry looks much like another Andy

A PM is a private message. If you click on my name (above my avatar) you'll see a menu - one of these is a messaging service that allows you to talk to other members. Andy

I'm in the process of building something like this for another member of this forum. I will have a 400 Watt digital amp module and a switch mode power supply, all in a black anodised aluminium case 220 x 160 x 52 mm, for an all-up weight of around 1.5 - 2 kg. If you're interested, send me a PM, and I'll keep you posted as the build progresses. Andy

Bought a WOBO looper off me. No problems at all, pleasure to deal with him. Andy

My first thought was that it might be an early Roscoe, from the 80's or early 90's. Andy