.jpg.518c69c2d9e1581799f3c11301dc2da5.jpg)
Chienmortbb
-
Posts
4,648 -
Joined
-
Last visited
Content Type
Profiles
Forums
Events
Shop
Articles
Everything posted by Chienmortbb
-
https://www.talkbass.com/wiki/pw3b-lpf-open-source-onboard-preamp/ @Passinwind will probably reply shortly but I know the history of this design. It was originally designed as an onboard pre-amp. The full details of that design is available on "The Other Place" and as I understand it, the latest iteration is designed as either an onboard or stomp box format. As for power consumption, I know that this was a major consideration in the choice of components and I believe that this version is designed for either 9V or 18V operation Thde original can be seen here. https://www.talkbass.com/wiki/pw3b-lpf-open-source-onboard-preamp/
-
That's fair enough if you are told the limitations of a piece of equipment. I know that wehn I am tired after a gig though, even the lightest item hits a doorframe or the edge of the boot of the car.
-
I did not have much of a chance to do much today but I did a bit. If you look at the picture above, The left hand module in new and untested and the right hand one has lost all the screws that hold the mains cables. So the first thing I did was to replace the mains input socket on the RH module. All easy I thought. No chance. The pins were too big so I had to drill out the holes. I was not sure whether the holes were plated through. So I had to malt sure the solder went right through. We will know tomorrow when I test it. I did test the other, newer module after rejigging and testing the mains wiring, Wiring was fine and the module worked fine. The new 4.8mm Faston connectors finally arrived this afternoon and I will start using them tomorrow.
-
And of course you have the choice.
-
I was reading the information, sent out by ICEPower recently, about their new 2000W modules and these points jumped out at me. To meet EMC/RFI requirements for even a medium sized MI company would be prohibitive. The cost a new ICEPOwer module does not come close costs close to a set of atV alves/Tubes in a big Ampeg* head. Yet no one seems to worry about replacing valves regularly. *£376 for full set of valves/tubes for an SVT at Watford Valves or more than half the price of a Mesa Boogie Subway D-800 currently in Europe.
-
Would it be worthwhile clamping the neck for longer so the the wood itself straightens? It seems a lot to ask the truss rod to take all the strain as in the video. I have straighend a neck like this but with tension off the truss rod and I left it clamped for a week or so. \The truss rod then only had to correct the string tension.
-
I put Di Marzios in mine, the jazz pup still retains that jazz bridge tone but is noiseless at its a humbucker. However I almost never use it. Incidentally the P pup is precisely 1/4" forward of the traditional P position.
-
Don't get me wrong, I was not criticizing ICEPower per se. I understand the problem as I had a design stolen for a headphone system for passengers stolen by a flag carrying airline. One that IS in a country that does supposedly operate IP properly. I suppose we should realise that the ICEPower modules do reduce development costs and time to market and the price we pay is lower initially but that component level repair is not possible.
-
I should add that the ICEPower modules, used by many are also impossible to get schematics for. I have repaired one before but they are difficult. Wharfedale on the other had join the list of those willing to supply service information.
-
Well what with the move, Covid and a new bamd this slipped on to the back burner but now I am back on it. I have drilled the heatsink on one of the new modules and it is now installed. I have started the wiring. The mains wiring is done to one module. I tried to use the Faston connectors I had but they are too big and so I have had to order the correct ones. They will be here Monday or Tuesday then I can restart wiring and testing of the modules. Once the power amp modules are tested I can start on the wiring. More soon.
-
If you put the power into the same cabinet, the relationship between power, quoted in watts, and the SPL is logarithmic. So a doubling of power results in a 3dB increase in the SPL. That is assuming that there is little or no power compression in the speaker.
-
Ed, I am not inferring in any way that Markbass products are unreliable, rather that Markbass, Music Tribe (Behringer) and Harman (Soundcraft) have all refused to supply the information that I need to repair their goods. You have to also accept that there is no IP on an electronic design made using commercially available components. The only way to get around this is to POT your commercially sensitive circuits (as HH did with their Valvesound Modules in the 1970s). I should also add that the Markbass product was a LM tube that had fallen off a cabinet so could not be considered a reliability issue unless you think that a professional amp should be able to withstand life on the road.
-
That is the only Markbass manual in the public domain. I worked for a large consumer electronics company before retiring (2009) and anyone could order a Service Manual or parts. Admittedly the use of integrated SMPS and Class D modules mean that the failure of one part requires a PCB replacement. That is expensive but that is no excuse for the lack of service information. This type of protectionism was outlawed some years ago in the motor trade so why should the electronics industry be different. Ashdown, GK, Marshalll, Alesis have all been very helpful to me in repairing amps effects units Behringer, Markbass and Soundcraft have all refused to supply Circuit Diagrams of Service Manuals. I have had one Markbass unit that has had to remain unrepaired because Markbass do not help the independent repairer.
-
Correct David. My mains voltage is close to 250 in Dorset and some amp modules don't like it. 253V is the upper limit and I had 240V module that did not always work. of course in Norway the mains could be down to 203V.
-
I have had a Vox AC30 Bass Combo and a Fender Bassman 50 in my day and by modern day standards they are crap.
-
I would not bother. Put an FMV tone stack in front of a decent SS amp and it will serve you much better.
-
The point I was trying to make was that, in my experience, if a Markbass, unit goes faulty you are in for a hefty repair bill. Only one authorised service centre. This does not always mean there is a problem. Music Tribe (Behringer et all) also have a policy, like Markbass (one that I believe is illegal), to withhold all service information form anyone but the Authorised Service Agents but at least the Beringer Service agent is as helpful as can be, subject to the constraints that Music Tribe hold them to. Its not about whether it does go wrong, rather that if it does, it is uneconomical to repair.
-
Alesis MIDIVerb 4 Price Drop £90 - *SOLD*
Chienmortbb replied to Chienmortbb's topic in Effects For Sale
I will just add that the Midiverb was very popular as it has a very natural sounding reverb and echo. I cannot comment on the Chorus etc as I only used the Reverbs and Echoes -
Markbass CMD 121P combo. Loud enough for stuff?
Chienmortbb replied to fretmeister's topic in Amps and Cabs
Just pray it does not go wrong. -
This is the Alesis Midiverb 4. An ideal addition to any studio, installation or live setup. I used it for years with a mixer (the inbuilt effects with most analogue mixers are poor). Comes complete with the Alesis power supply. It has a few scratches around the rack mount holes (rack rash) but is generally in very good condition. It can be used with a footswitch to turn effects on and off, although there was no footswitch supplied. Postage will be about £5. Sound On Sound review here https://www.soundonsound.com/reviews/alesis-midiverb-iv ALESIS say: "The MidiVerb™ 4 is the perfect effects processor for professional project studios and musicians who require an affordable solution for fully-programmable, high-fidelity effects. Its excellent effects algorithms produce dense, natural reverb, rich chorus, flange, delay, pitch effects and up to three simultaneous multieffects. The MidiVerb 4 offers 18 bit A/D and D/A converters and 24 bit internal processing for a 20Hz-20kHz bandwidth and 90dB dynamic range, making it ideal for digital recording. Plus, its valuable Auto Level Sensing™ feature can instantly set the optimum input levels...a great time-saver. MidiVerb 4's thirty-two effects algorithms give you a complete arsenal of fully programmable effects, many using true stereo parallel processing. You can take advantage of the 256 powerful programs with 128 spaces for user-created effects. With its easy-to-use graphic interface, programming your own effects is a snap. And by using MidiVerb 4's MIDI controller routing and assignable footswitch input, you'll have complete creative control over every aspect of your sound." Specs Presets (Factory/User): 128/128 Digital Effects (reverb, delay, chorus, etc.): Rvrb; chrs; dly; flng; rtry; ptch Simultaneous Effects: 3 Programmable Wet/Dry/Mix: Yes Compare/Bypass: Y/Y Maximum Delay Time: 1,300 ms Maximum Pitch Shift Range (octaves): ±1 octave MIDI Real-Time Control: Yes Simultaneous MIDI Controls: 2 Discrete Programming Channels: 2 ADC/DAC: 18-bit Overload Warning: 18-seg LED; clip light Inputs: (2) 1/4" Outputs: (2) 1/4"
-
Chauvet OBEY 4 DMX lighting controller. Almost immaculate condition. Price includes postage. This is a 16/4 channel DMX controller. It controls lighting fixtures or groups that operate on 4 channels of DMX. Below is a picture of the actual unit. Specifications DMX Channels: 16 DMX Connectors: 3-pin XLR Strobe Rate: 0 to 33 Hz Input Voltage: 9 VDC, 500 mA (external power supply: 100 to 240 VAC, 50/60 Hz) NB the unit has 12V DC printed on it but this is in error. The Chauvet website confirms that the unit needs 9V dc. Weight: 3 lb (1.4 kg) Size: 12.8 x 5.5 x 2.1 in (325 x 140 x 52 mm) Approvals: CE What's Included External power supply Quick Reference Guide -
The story that one amp class is superior or inferior to another. Are the different? Yes when driven into severe distortion. We all go into the discussion with biases and preconceptions* but when blind listening tests are conducted you get a truer reflection of what an amp or audio system can achieve.. *except me of course 😇
-
Don’t let the truth spoil a good story.🤪
-
They look as though they would work very well.
-
Yes I sort of realised that just after I hit enter. So my savings pot has been started.
