Jump to content

Artesia

Members
  • Posts

    571
  • Joined

  • Last visited

Everything posted by Artesia

  1. im very dry in my sense of humour.. my sarcasm is often a response that could be taken semi serious as well.. its easier than splitting hairs on folks intentions when you cant see or hear people to gauge their inflections ;) :) and in fair reflection i do see it as being one step short of junk 'as well' :)
  2. the port is a parallel port from what i know of it... the fz20m featured the scsi port if i heard right of the matter :) heres a couple of good resource pages: http://www.geocities.com/SoHo/2163/fz.html http://hem3.passagen.se/highpuls/index.htm
  3. yup, this reminds me why for somethings theres no contesting that certain software synths won the war long ago.. tho, if you like exporing quirky glitchy unintended results gained from primitive hardware.. (so new was the concept of 16bit adcs, they thought to take the time to label the long obselete mam chip specifically & encase it in ceramic !) Then, boxes of old scrap like this are great fun ;)
  4. obtained from a hackney second hand shop for peanuts.. fz10m. 16 bit 2mb sampler/(48 harmonic) additive/subtractive synthsizer from 1987 ! increadibly powerful bit of hardware for the mid 80's, with what would be impressive speed for the time, a processor clocked at 32mhz, given that the c64 ran at 1mhz & a top of the line 386 ran at 12mhz (at the time) ;) its still fun to play with & can make some interesting gritty noises; however the highy nested menu, user interface leaves quite abit to be desired, despite having ample buttons & a reasonable screen, the programming of the UI lets this generosity of specs down. Chips: (a perplexing mix of opamps, odds n sods store to clear ?) (1x) motorola - mam6208c a/d (2x) burr brown - pcm54p http://focus.ti.com/lit/ds/symlink/pcm54.pdf dac (4x) asic - fm1 8728 z00 (5x) jrc - 082d 20v/us 5mhz (4x) a6462d http://kr.ic-on-line.cn/IOL/viewpdf/LA6462_485151.htm sanyo - la6462 6mhz 4 v/us (1x) motorola - 5201 (1x) mb653121 (1x) (gab) pd65042g052 (1x) (gaa) pd65081gf012 (1x) (gas-2) pd65012g282 (16x) tc51100p-10 1 megabit DRAM chips. (1x) d70216gf-8 CPU / Microprocessor Frequency (MHz) ? 8 Package 80-pin plastic miniflat Architecture / Microarchitecture: Manufacturing process CMOS technology Data width 16 bit Floating Point Unit external uPD72191 Physical memory (MB) 1 Low power features Standby mode On-chip peripherals: * Clock generator * bus interface unit * bus arbitration unit * programmable wait state generator * DRAM refresh control unit * 3 independent 16-bit timers/counters * asynchronous serial I/O unit * 8-input interrupt control * 4-channel DMA control unit V core (V) ? 5 (1x) d65012c046 (2x) d71055c http://doc.chipfind.ru/pdf/nec/d71055c.pdf Parallel Interface Unit (1x) nec - d72067c (32mhz) (custom asic ? ..weird given i just found a known cpu above ;) outboard: (7x) a6462d http://kr.ic-on-line.cn/IOL/viewpdf/LA6462_485151.htm (xx) sanyo - la6462 6mhz 4 v/us (2x) jrc - 4558dd 3mhz 1 v/us (yuck !) (2x) motorola - 5201 (1x) nec - c1213c
  5. dont need subs with the s8's ;) ..one reason i love them :) also keep your eye on the bigger brothers, the mackie hr series.. if you see them cheap second hand ..grab em ;) ..as those however arent cheap to obtain new.
  6. try these, if you can find them in stock anymore (their parent companys having some trouble rn): tapco s8, designed by mackie & actualy very good for the money.. a real 40hz-20khz in a supprisingy compact package & good for listening to music, let alone mixing it ;) £270 ..sound comparable to far, far more expensive monitors :) Acoustic Performance Free Field Frequency Response: 40 Hz 20 kHz (±3 dB) Lower Cutoff Frequency: -3 dB @ 40 Hz Upper Cutoff Frequency: -3 dB @ 20 kHz Sound Pressure Level @ 1 meter, 7.5 dBu into Balanced Input: 100 dB SPL @ 1m Maximum SPL Per Pair: 113 dB SPL @ 1m Amplifiers Low Frequency Power: 60 watts, 4 ohm load, 100 watts peak High Frequency Power: 60 watts, 4 ohm load, 100 watts peak Slew Rate: > 15 V/µs Distortion (THD, SMPTE IMD, DIM 100): < 0.035% Electronic Crossover Crossover Type: 24 dB/octave Crossover Frequency: 3 kHz Sensitivity: +4 dBu at 300 Hz for full output Physical Dimensions and Weight Enclosure: 0.625 in/16 mm thick MDF with 1.0 in/25 mm MDF front panel Damping: Adiabatic fiberfill Dimensions: Height: 16.2 in/411 mm Width: 11.6 in/295 mm Depth: 13.8 in/351 mm Weight: 35.2 lb/16.0 kg unike mackies srm450 live sound cabs ..these things really do kick arse ;) seriously, give these a go.. i was so impressed upon monitor shopping for someone else; i bought a pair myself
  7. nokia e90 communicator (pda, phone, web device) ..it can take photos of fine newspaper print whilst remaining perfectly readable; its excellent for a phone.. but ive got a canon 20d which im comparing it to.. which is a little unfair on it i suppose ;)
  8. Heres a hastily captured rundown on the hardware of a bss soundweb digital sound management & crossover unit. not on the usual high quality camera unfortunately, only had phone on me. chips on the conversion side are pretty nice tbh :) then again id be pretty pissed if they cut corners at that price; mind i dont use these personally. chips are: * AKM - AK5392 http://www.asahi-kasei.co.jp/akm/en/product/ak5392/ak5392_f01e.pdf Enhanced Dual Bit 24-Bit ADC # Sampling Rate: 1kHz to 54kHz # Full Differential Inputs # S/(N + D): 105dB # Dynamic range: 116dB # S/N: 116dB * CRYSTAL - CS4390 http://www.cirrus.com/en/products/pro/detail/P32.html 24-Bit, 48 kHz Stereo D/A Converter # Sampling Rate: 1 KHz to 50 kHz # Dynamic range: 106dB # S/N: 115dB * CRYSTAL - CS3310 http://www.cirrus.com/en/pubs/proDatasheet/CS3310_F1.pdf Stereo Digital (analog domain) Volume Control # Dynamic range: 116dB # thd/n: 0.001% # 0.5db step size # 127db total trim range * ANALOG DEVICES - OPA275 http://www.analog.com/static/imported-files/data_sheets/OP275.pdf # Dual Bipolar/JFET, Audio Operational Amplifier # Low Noise: 6 nV/Hz # Low Distortion: 0.0006% # High Slew Rate: 22 V/s # Wide Bandwidth: 9 MHz * ANALOG DEVICES - ADG411 http://www.analog.com/static/imported-files/data_sheets/ADG411_412_413.pdf Precision Quad analog SPST Switches * 2X MOTOROLA - XC56303PV80 http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=DSP56303&fsrch=1 24 BIT DSP, NOW DISTRIBUTED BY FREESCALE; PART DISCONTINUED BUT RELATED CHIPS HERE: assumed to be: # 80 mhz # 24bit with 56bit capable barrel shifter. * CUSTOM ASIC - SOUNDWEB * and other support chips i couldnt be asked to document.
  9. i wonder if anyone on ebay has ever tried aprils fool to get out of a mixup ? "..look mate, i ordered steel capped workboots, and i got fluffy kitten slippers" ...aprils fool !
  10. rms is more useful when you are setting up soundsystems which are likely to often be pushed to their limits. as this average value is more reprosentative of power dissapated at the driver. drivers can handle alot more peak power than rms, even if they dont reproduce all of it as sound ;) this therefore allows you (in combination with the compression (uses rms tracking) and limiting tools) to set the drive levels within safe limits for the system & at a glance confirm average levels. if done right, you can walk away and not worry about anyone blowing the rig with excess volume ;)
  11. to the best of my understanding a m6r is identical to the m1000; only its guts are far less compact, using large, older footprint chip housings. btw one niggle with the racks. changing many programming specific perameters over sysex takes sometime to update as their cpus are somewhat overstreched. still good for programming sounds, but it makes tweaking values other than the intended mod destinations neigh on impossible to use for additional expression control thru automation. this is one good reason more could be got from these by someone midibox projecting the synth chips :)
  12. a little something posted elswhere, but probably of interest here - it turns out the led meters on the dcx2496 are indeed 'rms': aprox -30db of pink noise with a 12db crest factor (aprox -18db peak): -30db rms shows up on dcx 2496 as an 'rms' value :) not peak ! however, this old matrix 2u600 shows the drive level as (-18db) peak: Edited by nineleaves - Today at 4:56pm
  13. i {heart icon} my oberheim matrix 12 ;) ..the matrix 1000 is very good value for money, gets pretty close to the character of the m12, but lacks the same extent of overkill really silly programming possibilitys of its older sibling :) its still a very flexable beast however. also of note, the dave smith poly evolver sounds very close to a matrix and uses filters designed by the same people. its got more programming options than a m1000; and digital programmable waveform options. only they are a little bit more expensive. but certainly a better buy than a virus in my book ;) :)
  14. Everso slightly borrowed from an ebay listing (sorry!) : #230332861853 but the pics where too comprehensive to allow to dissapear. so, not as many details about the chips however :/ please post additional details you find out :) # Polyphony - 8 voices # Oscillators - 2 vco's per voice: saw, pulse, triangle # Memory - 120 patch programs, 12 split programs, and 12 double programs; external cassette storage; MIDI SysEx data dump # Filter - Switchable 2-pole or 4-pole VCF w/ ADSR # LFO - Triangle, Square, Ramp, Samp+Hold # Keyboard - 61 keys (can be split or doubled); no velocity or aftertouch # Arpeg/Seq - 8-note arpeggiator with external sync source # Control - MIDI (Channels 1-9) added as a retrofit # Date Produced - 1983 - 1985 apparently: filter chips: CEM 3320 http://www.synthtech.com/cem/c3320pdf.pdf
  15. this also impresses me; tho more people will have seen this by now. cutting a (mockup ?) v8 engine block out of a solid lump of ally with a 5 axis cnc: precision fly cutting an engine: im not much of a petrol head (abit of a biker tho), tho this still fascinates me. ah, heavy duty engineering ;)
  16. yup, i know those machines.. they are awesome. i spent YEARS puzzled trying to figure out how they wind the things; then i became good friends with a veteran of the amplifier industry, the owner of matrix amplifiers who makes everything from the casework down to the transformers. hes switched over to properly engineered switch mode power supplys now tho.
  17. due to a pending rewind, heres what the core of a terroidal transformer looks like. its a steel band wound in a tight spiral, held togeather by a seam weld and plastic end caps. oh the temptation to cut that band seam, leave it on a hot plate and watch the fun unravel ;)
  18. damn.. fpga peripherals; thats a much better way to impliment :) glad to see old school computing alive on modern hardware :) FPAA.. I didnt know such a thing exhisted yet :o ..goodness that could have some potential - {gets very interested :)}
  19. old school computing, im old enough to remember the consumer application of audio tapes for program storage :) ..yes, old school computing was akin to some kind of religious ritual torture that meerly seemed to exhist for its creators amusement. Im glad certain aspects of the old days are long gone; and wish that others were still there :/ :) as for that kind on construction, is that trying to recreate the kind of painstaking torrture involved ? ;) ..ill give a prize to the first person to sucessfully recreate a commodore 64 entirely (as much as possible) on smt ;) :)
  20. odd.. very odd :) not as odd as the cadburys eyebrows advert; but nowhere near as annoying. infact, theres a game; see how long you can go without thinking of 'the eyebrows' ..ah, the game :)
  21. Hi again, finally had the time to run some diagnostics on this little unit to determine how far it can be pushed signal wise & heres the results gleaned with passable, but less than optimal equipment. when discounting what anomalous distortion the measuring equipment adds to the data, id have to say this mixer certainly should perform pretty much to its spec sheet breakdown :) the behringer blampf: AUDIO INPUTS Mic 1/2 (XLR, electronically balanced) Max. input level -14 dBu Input impedance 2 k? Phono (RCA) Max. input level -18 dBu Input impedance 47 k? Line (RCA) Max. input level +30 dBu Input impedance 15 k? AUDIO OUTPUTS OUT A (XLR, balanced) Max. output level +21 dBu Output impedance 200 ? OUT A / OUT B / TAPE (RCA) Max. output level +21 dBu Output impedance 100 ? Phones Out max. 260 mW @ 100 ? / 1 % THD S/PDIF (coaxial, 16 bit, 44.1 kHz) EQUALIZER Stereo Low -? dB/+12 dB Stereo Mid -? dB/+12 dB Stereo High -? dB/+12 dB Mic Low -12 dB/+12 dB, Shelving Mic Mid -12 dB/+12 dB, Peak Mic High -12 dB/+12 dB, Shelving DIGITAL EFFECTS PROCESSOR DSP 2x Analog Devices Black Fin AD/DA converter 24-bit Sigma-Delta/128-times oversampling/Cirrus Sampling rate 44.1 kHz LCD display 320 x 40 pixel MIDI interface 5-pin DIN jacks In/Out/Thru SYSTEM SPECIFICATIONS Frequency response Mic 25 Hz – 20 kHz, +0/-3 dB Phono 20 Hz – 20 kHz, +0/-3 dB Line 20 Hz – 20 kHz, +0/-3 dB Signal-to-noise ratio Mic > 87 dB Phono > 83 dB Line > 102 dB Distortion (THD) < 0,009 % (Line – OUT A) Crosstalk < -80 dB / 1 kHz (Line) POWER SUPPLY Mains voltage / fuse 100 – 240 V~, 50/60 Hz T 1 A H 250 V Power consumption max. 20 W Mains connector standard IEC receptacle DIMENSIONS/WEIGHT Dimensions (H x W x D) approx. 4 1/3" x 12 3/5" x 15 1/2" (110 mm x 320 mm x 392 mm) Weight approx. 9.3 lbs. (4.2 kg) MY Blamf: the simple, general rule of thumb gleaned from the bench testing below: * keep input signals on or below the yellow 0db mark to maximise resolution/quality of incoming signal, whilst allowing sufficent internal overhead to prevent effects and eqs clipping. * keep output below +8db for cleanest sound, try setting the gain of your pa to match this (with limiting applyed beyond this). * definately do not exceed 12db if you want your sound to remain clean. * itll sound crap & youll probably break things attached to this, if you push it waay into the clip region ;) The full breakdown: NOTE: measured with ARTA & Saffire le soundcard, performance of unit may well be higher on accounts of distortion & noise floor.. as the figures quoted will include what marginal hash it generates too. disregard the 156hz peak, this seems to have nothing to do with the mixer. Also noise & 1k sine sources used as an arbatary standard of sorts for these tests, no notable increase/decrease in distortion was noted with changing frequencys. dig out: * noise floor - -105db 100hz, 4.1k, -110db 20k, -83.5db * 1.15v pulse train, well defined edges. Line IN (ch1): line modes: * full gain without raised output noise floor. * With max gain - +14dbu/(-12dbfs)/1.81v (at 1k) without clipping. (shows +9 clipping on ddm) * gain trim range - 40db * freq resp appears to be ruler flat phono mode: * max gain noise floor - -75db 100hz, -94db 7k, -85db 20k output a: * +21 dbu before distortion. * +8db on ddm meter (11v) cleanest sound setting. - (THD 0.011%, 21 dbu) * +12db on ddm meter (14.5v) max 'clean' setting. - (THD 0.028%, 23.5 dbu) * clip starts to flicker on ddm meter (23v). - (THD 0.83%, 27.5 dbu) * beyond clip on ddm (27v) power rail limit. - (THD 1.63%, 29 dbu) * 27v peak, for 11v out (knob at 12 o clock) before marginal distortion rise. * opamp lower power rail seems to collapse before upper. * any output level, neglegible noise floor does not rise. * scope measured hf noise, mostly out of audio band: 22mv/rms aprox, 45mv peak. output b: * +21 dbu before distortion. * same breakdown as above. * any output level, neglegible noise floor does not rise. * scope measured hf noise, mostly out of audio band: 1500 NS cycle semi random sine noise (666.66KHZ) 115mv rms, 190mv peak tape output: as with b, but gain fixed to 1:1. headphones: 15.5v out - clean output (+20.5dbu, thd 0.025) 18.5v clip limit (+25.5dbu, thd 0.11) (no load) Digital out, idle all inputs set to minimum level. Phono in mode, with gain set to maximum. Standard eq settings, low and high set to max gain. Standard eq settings, mid set to max gain. Standard eq settings, low and high set to min gain. interestingly, the cuts slope rather than shelf as with gain. after a little thought i concluded this is probably a better idea ;) Standard eq settings, mid set to min gain. around about -70db dip. output a, at 11.5v. output a, at 14.5v. output a, at 23v. output a, at 27v. rail limit. headphone out 15.5v (no load) headphone out 18.5v (no load)
  22. bummer.. i read quantitys of 10 somewhere on there ;) ...must mean 10 pallets ..hehe !
  23. what a load of crepe ;) ..im waiting for the one about diy laser eye surgery :)
  24. hmm.. no response :) ..they went nuts for this one on speaker plans ;)
  25. haha.. yup. and yes, they probably do ignore alot of them.. however itll also make them twitchier about a public backlash if they push certain things thru.. also it helps make people aware of an issue, such that more people keep track of the issue and are more readily mobilised to direct action when this variety of protest is ignored. in anycase its way better than sitting back with typical british apathy and saying nothing as this country is dug into the ground by those at the wheel.
×
×
  • Create New...