Beer of the Bass

With everything running on DC adaptors, the ground of each device is connected together, but the whole system is floating with no earth connection. I think it gets quieter when touching the strings or casing because you are functioning as the earth connection. Have you got a mains-powered amp in the house, even a guitar amp? If it's quiet with with that, it may just be that it needs an amp with an earth connection, rather than the preamp being faulty.

Does the Yamaha THR have a three pin IEC connector, or does it use an external DC adaptor? It could be a grounding issue, if the THR doesn't have a power supply ground. Since the preamp runs on a DC wall-wart and steps it up inside the unit, that won't be grounded either. I reckon the preamp will probably be quiet when used with a conventional AC-powered amp - that might be worth checking. The preamp does look like a nice bit of kit, but it does seem like a design flaw for a valve preamp to rely on the output cable for grounding.

Would a ss preamp/valve power amp hybrid be against the "rules" of the thread? I'm doing a recap and general refurb on a Dynacord Eminent II at the moment, and could probably post some gut shots.

JJs are usually fine, I've not used their 6l6 but I like their 6v6 and I'm about to use a pair of their E34L in another amp. They're made in Slovakia and generally have a reputation for being quite rugged. I'm not sure why he would go for second-hand, as they're in current production and not overly expensive, but if they test OK and he's not charging you new prices I wouldn't worry.

The bolt-on does allow for a certain fudge factor if you don't get the neck angle and bridge elevation spot-on first time, because you can shim or modify the pocket. So the bolt-on could be seen as a bit more forgiving even if there might be more steps involved. Finishing could be a little easier with a separate neck and body too.

[quote name='mike257' timestamp='1455207696' post='2977079'] I'll have to fish out a pic of my Fender. Early 90's Champ 25 - was only around for a couple of years, a bit of an oddity as it's a solid state preamp, but a valve PI and valve power section (25w from a pair of 6L6) into a 1x12. It's REALLY bloody loud and very clean. Seen people describe it as a "mini Twin". As per usual, the drive channel is a bit iffy. It's got tons too much gain on tap, with the gain right off I get some nice breakup tones with a Tele, but anything with humbuckers is just too much. Clean channel is ace though. [/quote] I had one of those for a couple of years. I liked mine, but it was definitely the sort of amp where you run it clean and use pedals. I found that the reverb on mine was very much improved by fitting a full length type 9 pan rather than the short one that's in there.

[quote name='discreet' timestamp='1456165057' post='2986154'] That's right. When I built a 1 X 12 cab I waited until it was finished, then released the photographs and build posts over a matter of days. It's only polite and is the right thing to do. No-one is going to wait around forever for someone to put a J pup in a P Bass. [/quote] This method also has the advantage that if you mess something up, feel silly about it and end up shelving the project, you don't have half a dozen people waiting to see what happens next! Speaking purely hypothetically, of course...

I'm hoping that the 80 watt Dynacord valve amp I'm fixing up at the moment will be a good middle ground, as it's surprisingly small and light at 12.6Kg, and should be loud enough for most of what I do. Between 10 and 20kg in any one item seems to be an amount I can lift without regretting it the next day; any more than that I try to avoid.

[quote name='geoffbassist' timestamp='1456163947' post='2986128'] BTW, I'm off to see Danny Thompson in Leeds on Friday and predict a serious bout of Spiro GAS coming up! :-) [/quote] Doesn't he have a signature Elites set now? Or has he quietly stuck with the spiros?

Giving everything a thorough clean and seeing how I get on does seem like a reasonable thing to try first. I'll probably budget for a new set some time later in the year though. It might be interesting to give the S42 Mittel a try next time too - my current set are the 3885 Mittel.

I can think of a couple of reasons for not going micro, but neither of them are related to performance. One is that older style class A/B amps are often comparatively good value when bought secondhand and still aren't [i]that[/i] hard to move around. The other is that as someone who likes to tinker with their gear, I have a decent chance of being able to troubleshoot and repair most things that could go wrong with a transformer power supply, class AB, through-hole PCB built amp, while fixing a class D, SMPS, surface-mount PCB amp is way beyond my skill level. That's not to say that it can't be done, just that I haven't developed that skillset. Having said that, I'm still using a GK MB200 for most things - it's just too convenient!

The implementation of limiters can differ across different manufacturers too. I came across a schematic for my GK MB200 online and there is an LED/FET optoisolator fed by the speaker output which reduces the gain of a stage at the end of the preamp. This will affect how the amp responds to peaks even compared to another using the same module.

[quote name='Roland Rock' timestamp='1455996961' post='2984449'] Blue: "Why don't we do it in the road?" <SLAP> [/quote] No one will be watching us!

The only time I've been to Liverpool I didn't really take in anything Beatles related either. My old band played at the Pilgrim and stayed over at a friend's house. In the morning we found a good secondhand record shop, had a fried breakfast somewhere and bought a massive bag of ripe bananas that we couldn't finish. I also recall spending some time giggling at the name of Menlove Avenue when we passed it, completely unaware of the Beatle significance of the address.

[quote name='bassace' timestamp='1455983585' post='2984273'] How do you decide when they're dead? When they start to lose their nasal twang and give a satisfactory tone. There are a lot of dead Spiro enthusiasts. Just keep them clean with industrial alcohol and they'll last for ever, well almost. A useful trick is to de-tension them from time to time. You'll be surprised how their brightness comes back when you bring them up to pitch. [/quote] If I'm recalling this accurately, that objectionable metallic "zing" only lasted for about a month or so for me when the strings were new. That was in a period where I was spending a lot of time playing, so it might take longer now. I'm not looking for the sound of those first couple of weeks, more the sound that it settled into for the next couple of years. It does come back to some extent upon cleaning or just de-tuning and re-tuning, but that doesn't seem to last for long and I'm sure my bass is darker now than in the recordings linked in my signature, which were done about 2 1/2 years ago with the same set. On the other hand, they're certainly friendlier with the bow now.

I've had my old German (possibly Czech) flatback carved bass for about 8 years now and when I got it I had a new bridge, fingerboard and soundpost fitted along with a new set of Spirocore Mittels. People always talk about the longevity of Spiros, but I'm trying to decide what the trigger is for me to finally decide it's time for a new set. Due to trying some other sets, they've only done about 6 years of playing and I've cleaned them with alcohol several times. They don't sound terrible and they still have some sustain, but I'm sure they're lacking a bit of the brightness and liveliness that they had in the first few years. I enjoy that overt Spirocore growl and miss it if it's not all there - my big inspirations to get into double bass were Danny Thompson and Dave Holland, so I'm sure you get the idea. So, for any other Spiro enthusiasts, how long do you give yours? Is this the year for a new set?

[quote name='dannybuoy' timestamp='1455914719' post='2983680'] Agree with the above, also the Source Audio filters can cop a good down sweep too. I've sold my Zoom units now, but they have a really good Q-Tron model in them, although I can't remember if they can do a down sweep, anyone able to confirm? [/quote] That was another thought - if the filter in the Zooms does what I need, I could certainly find a few other uses for one too. Probably the MS60B, as I may not need everything in the B3 and the B1on/B1Xon look a bit too plasticky for gigging. Having a quick peek at the manual, the way the sensitivity is numbered from -10 to +10 suggests it might have a reverse sweep.

Vulcanised fibre board is the stuff they made pickup flatwork and amplifier eyelet boards from, so it makes sense that they'd use it elsewhere.

I've noticed that the Ashdown envelope filters go quite cheaply used, the silvery grey ones with the meter on the top. Are they worth a punt? I fancy something that can do the Mutron-esque downwards sweep "boww" sound, and it seems like many of the cheaper envelope filters are upwards only. Or is there anything else that's cheap and worth looking at for this? I suppose I could DIY something, but I have too many projects awaiting my attention as it is.

We're all going to think our basses sound great, aren't we? I've never heard someone in a guitar shop exclaim "Hmm, sounds a bit meh. I'll take it!"

Do we have to justify it? I'm sure that in tougher circumstances I would find[i] something [/i]to make music on (as you see people doing in many parts of the world), so the idea of necessity is a relative thing. That aside, I'll give it a go; [b]German/Czech double bass, circa 1900[/b]: Double bass is the instrument I wanted to play from a young age, but couldn't get hold of my own until a little later. Although I'll sometimes go through periods where I'm not playing it as much, I'm just less happy without a double bass around. After a rather disappointing modern plywood bass and one older bass with some issues, as soon as I had the opportunity to get hold of a solid, healthy older bass I jumped at it. Mine has been beaten up, badly re-varnished and then beaten up some more, but it's a great sounding instrument and will be with me for life (accidents or theft notwithstanding). [b]Home built 4 string[/b]: This is a bass I built (rather crudely) in my parent's shed when I was 18, with the aid of Melvyn Hiscock's "Make Your Own Electric Guitar" book. It has a walnut body, maple/rosewood neck and originally used the hardware from my Ibanez Ric copy which had collapsed at the neck joint. It was my main electric bass for something like 10 years and has it's own sound, but on the downside it weighs 13lbs. It gets little use at the moment, but it has a fair bit of sentimental value and is probably too crude and quirky to sell anyway! [b]Home built 5 string[/b]: Several years ago I was playing in a band which was rehearsing and gigging very regularly. I had sold the Fender Jazz I'd been playing due to general skintness and the weight of my 4 string was getting to me. I'm not sure why I decided to go 5 string, it just seemed like a good idea. My pickups and tuners were secondhand from eBay and the BC classifieds to keep costs down and it originally used an OLP MM5 neck, though later I built a new neck for it. This one is ash with a maple neck and fingerboard and a pair of Jazz pickups from a Lakland Joe Osborne. It's currently my main electric bass. [b]Gallien Krueger MB200[/b]: This sees quite a bit of use, I'm not in love with it but it's very convenient and usually loud enough. [b]Dynacord Eminent II[/b]: This is less practical, I like valve amps and I like to build, tweak and repair things as a bit of a hobby. Musically I could probably do without this one, but I do enjoy tinkering about with old amps. [b]Home built cabs, 1x10" and 1x12"[/b]: The 1x10" comes out for low volume stuff, double bass use or for taking on the bus. The pair of 1x12" cabs will cover any other gigs. They've only done one gig so far, as I only finished them last week! All of this is either actively used or not worth selling, and building things has become a hobby for me. I probably do have some "indulgences" in other instruments, like a 30's Gibson-made Kalamazoo acoustic guitar which I don't actually gig, but the bass stuff is all quite functional really.

[quote name='Bilbo' timestamp='1455026490' post='2975146'] Carla Bley - Escalator Over the Hill [/quote] This is an interesting one, it certainly has the feel and structure of a concept album but Paul Haines' lyrics are so abstruse that I couldn't tell you what the concept was, or what happened to whom in a narrative sense. Great album though!

How about a second matching cab for your existing head? That should get you a bit more volume and bring the speaker closer to ear level for monitoring.

Cutting down the strips for bracing, working out their positions and getting it all fitted definitely added a fair chunk of time to my build, especially as I didn't have a table saw to cut long parallel strips with. With that in mind I could see the appeal of using 18mm ply with a simplified bracing scheme.

[quote name='dannybuoy' timestamp='1455662378' post='2981366'] Link still works for me. Go to BBC News and search for Kanye. [/quote] I can find it on their website, but still can't use the link. Hmm, what an odd man. I don't have much more to add than that!