Chienmortbb

There was a guy om EBAY that used to sell paulownia bodies. They are very light and I need a lightweight body for a project. Does anyone know of a supplier of lightweight bodies as Willie sees to have stopped selliing.

[quote name='Alec' timestamp='1442911403' post='2870359'] I shall ignore this very kind offer (possibly...) You'd be surprised. When I take my small rig out for practice, the bass goes in a gigbag on my back, the RH450 head in a laptop bag, and I carry the cab with the other hand. Counter to any previous experience with bass rigs, the bass is the heaviest item, followed by the head, followed by the cab - how often has this ever been the case... [/quote]You have hit on a serious note here. I have a neck problem and a heavy bass is a real problem. My Aerodyne is quite light, having a basswood body, my Peavey can only be played sitting down.

Brands like Behringer get a lit of stick for their lack of innovation and reletively inept marketing but frankly looking at some Boutique products. I am wondering whether some of the boutique manifacturers just use better smoke and shinier mirrors? I am not suggesting that the products are not great products but: Is a Glockengang Blue Sky twice as good (or is it evan as good as) an Ashdown Rootmaster 800? Why do Jule Amp copy a vintage Roberts radio then charge a lot of money for a preamp? Yes I know it has valves. So did the first computers and car radios, I don't see many of those about now. Compressor looks gorgeous but £200 for a stompbox compressor? I thought the Finns had no sense of humour. At least Darkglass is a cool name. As I said I am not having a pop specifically at those manufacturers, others are just as guilty (if there is any guilt).

[quote name='Grangur' timestamp='1442849164' post='2869976'] Your nearest One10 demo unit is in Bishops Stortford... sorry, this isn't helpful is it? [/quote]It may be small and light but carrying it all of 10 miles could be a problem,

I should add that the reason I heard the Sontronics was I was in Absolute Music. However at te time I did not know their HQ was less than a mile from my house. Incidenty the have a great live sound stage to try things on. All the is missing is the audience.

The SM series are a blast from the past and although still good mics there are many better mics available. In fact there is an Utban Myth that some BBC sound techs prefer Behringer Mics to Shure, I must ask my friend Uli who told him that story. I love AKG Headphones but never found their mics that good for live work. A femial singer got rid of hers about 10 years ago as she was never happy with it. I must confess it was not a D5. To be serious the best vocal mic I have heard recently is the Sontronics ST-C80. it is almost as good as the firm's condenser mics. It is available for under £80 from Absolute Music. For value actually the Behringer XM8500 with a foam windshield/screen takes some beating.

The Line 6 mics use 2.4GHz so should not be affectd by 4G phones. The Sennheiser system work on so called Channel 70 and is right next to some 4G transmission.

Has anyone had any problems with 4G moblie phones interfering with wireless mics? It was flagged up by Ofcom as a possible problem but I thing we may have had is a coupe of times recently. Is anyone still using VHF mics? I was wondering whether the move to UHF has improved VHF.

Of course I forgot Duke Le Jeune of Audio Kinetics, some really innovative designs coming from him. Passinwind knows more about Duke's new designs.

I doubt whether a 100W amp will blow a 1000W Speaker. On the Gain issue. It s simple. Gain is the control of the amount of gain a circuit has and has nothing to do with Overdive (WTF is that). Volume is more woolly but in general is an attenuator at the end of a stage or pre-amp. A gain control is part of the circuit and a volume control is after a circuit. The trouble is that these are semantics for the people and for marketing department, just the job for fooling the punters.

It is interesting that we have supporters of both Barefaced and TKS on here. Sometimes it is like Everton and Liverpool supporters arguing the toss,. However They both make great products from Europe and we don't have to rely on aiir shipped form North America and the Far East. I worked for Panasonic (Technics and Ramsa) for many years and there was one golden rule about manufacturing. You don't ship air. That means speaker cabinets as freight is cosed on both weight and volume (size not loudness). So your boutique cab from the good ole USA or your MDF cab from China will be expensive because the shipping costs are high, attracting both VAT and DUTY. Then they are then marked uo several times before your long suffering renditions of Mustang Sally have paid for them. So we should salute both TKS and Barefaced and give credit to both Bill F and Greenboy for pushing the boundaries of what Bass cabinet design can be. Keep them on their toes, if something goes wrong, tell themso they can get a handle* on it (sorry Alex). Then come back here and tell us of your experience. While I am in temporary (I hope) retirement I will dream of owning either or both and hope that the [url="http://dansette.com/#for-sale"]"Dansette*[/url] look dissappears and a new Logo* appears that is not designed by Lego. *Jokes so don't flame me.

[attachment=199859:2015-09-01 19.33.48.jpg]Looking good?

Thanks Phil. If it is OK with you I will send the amp to you when it is finished so you can tell mewhat you think. With my eye and my wife's illness I will not be gigging for a while. It would be great to get some feedback especially as I decided on the power output based on your 1x12 cab design. Don't hold you breath though it will be a month or more.

Tomorrow is my eye operation so another delay. However I powered up the amp and power supplies today all work well.

OK back on track. If the baffle size is reduced will the baffle step not also rise in frequency? Also with the slot pots will the driver be relocated for optimum baffle step reduction?

We should really wait till the 2x10 thread is running but.,,which 10" Beymas are you using?

[quote name='Beer of the Bass' timestamp='1440105974' post='2848426'] Yes, I've wondered about that with regard to the signal most magnetic pickups produce. I was reading Erno Zwaan's book (the Q-tuners guy), and it would appear that most high impedance pickups start to roll off above their resonant peak, which is much lower than 18KHz. So presumably anything going on up there is likely to be either distortion artifacts or noise. Do we really want to hear that? [/quote]On a passive bass the traditional Volume and Tone controls limit the higher frequencies quite a lot and although I am willing to be corrected, there is little or no output at 18KHz. Even an active bass that uses volume or blend before the preamp will kill the real highs. The only reason to go to 50KHz is to listen to interference from TV remotes or unshielded CD players.I have to agree with Bill that there is little musical sound either above 8-10KHz, or on a Kanye West song, except hiss and interference.

[quote name='Phil Starr' timestamp='1439996791' post='2847409'] Well the Streamliner sounded amazing through the 2x10 design I have here. I recorded the sound on a little Olympus recorder I have here, if they are any good I'll put them up. [/quote]Not to complicate things, what 2x10 design?

[quote name='tauzero' timestamp='1439683016' post='2845028'] I thought that's what I said: "the peak-to-peak voltage of a sine wave is 1.414 times its RMS value, hence its peak-to-peak power is twice its RMS power" Power = V^2 / R [/quote]Sorry to hijack the thread buy. Peak is 1.414 * RMS in voltage or current. Most people multiply the two together to get RMS watt (slightly wrong but hehe). So at 100W into 8R (R is the correct abbreviation for Ohms) the voltage is 28.25V and current is 3.54A. Multiply each by 1.414 and we get a Voltage of 39.94V and a current of 5.0A. multiply one by the other and you get just shy ot 200W so double. Peak to Peak is twice peak so gives gives 80V * !0A and so 800Watts. Easy to see how the marketing department can get excited.

tauzero is correct on most things but 1.414 is the peak (not peak to peak) of RMS. However if you are working peak power then it is twice RMS as both the voltage and current peaks are 1.414 time the voltage and current of RMS. So. 500 Watts RMS is 1000 Watts peak. I think Bergera have missed a trick here because had they marketed this premium range as 500 Watt amps, people would probably rave about them rather than dispute the rather vague specs. For what its worth I think they are beautiful looking amps. .

I once spoke to the man that designed the cabinets at Trace and he swore that MDF sounded best of all. Of course HH were one oif the few manufacturers that made their own drivers so they probably also knew a bit about cab designs too.

Of course if you talk to the transformer manufacturers, they will claim (and do) that the valve sound is mostly down to the way the output transformer behaves. I am not conforming that but is does seem to question the value of valve preamps. As for the look pf the amp, I was trained in the late 60's and all test equipment looked like that. So I suppose I am suffering nostalgia.

Warning boring technical content. From memory (not too good nowadays) the ABM and MAG range use Class AB output stages using power FETs similar to the old Trace designs (can't remember whether they are VFets or Mosfets. Advantages over bipolar transistor output stages are that the the transfer charateristic is closer to valve than transistor so clipping is less harsh, and they do not suffer from thermal runaway (if the heatsink is too small or ambient temerature is too high). Disadvantages are that they give out less power (fewer watts) for a given power supply voltage so transformers are bigger (hence heavier). Incidentally it is a lovely looking amp. Looks like it means business.

Is this the marketing dept. using what they copnsiser a musical adjective?

Seems like two steps forward and one step back at the moment. I was doing a parts order and added some tiny 9mm pots from AlphaTaiwan. One was for the FX return level control. Unfortunately I did not read the spec carefully enough and I got a PCB mounted pot with a knurled shaft. It is not chassis mount. So as I did not want a big knob on the back panel that was proud of the back of the case, I set about mounting the pot on some stripboard with the idea to mount it on pillars, it worked quite well as you can see in the pictures attached. As I was tightening the slotted screws that held the stripboard and pot, the screwdriver slipped and gouged the back panel. I did a test spot of brush applied varnish and it seemed to work well but over a larger it looked terrible. So I disassembled the panel, rubbed it down then applied the last of the spray lacquer I had. Not great but just about passes muster.