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<1…16171819202122…34>
  • IF1bis StabilityI just thought I would start a different thread relating to the IF1bis, and leave the copyrighters to it elsewhere...:-P I've had mine for a few mon…

    ... but are happening with more frequency than you may expect. Some ... of 2 (two), yes TWO output lines simultaneously?

    - ?Devilish ...
    Dan Antohi Dan Antohi January 2014 Hardware
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…

    ... make no difference for the output signal. Now using a different ... works. That caused the PAL frequency to be a bit too ...
    ingo ingo February 2014 Hardware
  • Loading from/saving to Zoom H2NI have recently acquired a Zoom H2N Handy Recorder for various audio-based purposes, and I am interested in loading my Speccy games from the H2N (Wav…

    ... 48K and 128K machines (MIC port on Speccy connected to ... So the MIC port of the Spectrum is its output and the ... line In to the MIC port of the Spectrum.[/ ... impedance (=1kOhm) than the MIC port because it is designed ... a low impedance EAR output of a typical tape ...
    ingo ingo February 2014 Hardware
  • Puzzled about transferring games to tapeI was trying to transfer a game to a tape by using tapir and VLC. I opened up the tape file in Tapir and then converted it to a .wav file. I then pla…

    ... speaker or headphone output on PC into the mic in on your ...
    Grimmsqueaker Grimmsqueaker February 2014 Games
  • Rubber key Spectrum mic outputHi, I have the composite modification done on my rubber key Spectrum, I'm thinking about using one of those scart plugs where I can connect the compo…

    ... a line out to a mic out where those devices ... just have a mic input, but in the ... some sort of mic amplifier with a line output or a cassette ... deck that has a mic input ... and a line output. But really i ...
    Your Spec-chum Your Spec-chum February 2014 Hardware
  • Rubber key Spectrum mic outputHi, I have the composite modification done on my rubber key Spectrum, I'm thinking about using one of those scart plugs where I can connect the compo…

    ... a line out to a mic out where those devices ... just have a mic input, but in the ... some sort of mic amplifier with a line output or a cassette ... deck that has a mic input ... and a line output. But really i ...
    Speccy_James Speccy_James February 2014 Hardware
  • Rubber key Spectrum mic outputHi, I have the composite modification done on my rubber key Spectrum, I'm thinking about using one of those scart plugs where I can connect the compo…

    I just realised I meant to say ear output as the mic is input! Is the ear output a line output?
    Speccy_James Speccy_James February 2014 Hardware
  • Rubber key Spectrum mic outputHi, I have the composite modification done on my rubber key Spectrum, I'm thinking about using one of those scart plugs where I can connect the compo…

    ... meant to say ear output as the mic is input! Is the ... ear output a line output?[/QUOTE]

    On the speccy the MIC ... connector is the output going to the tape ...
    guesser guesser February 2014 Hardware
  • Rubber key Spectrum mic outputHi, I have the composite modification done on my rubber key Spectrum, I'm thinking about using one of those scart plugs where I can connect the compo…

    ... ]On the speccy the MIC connector is the output going to the ...
    Speccy_James Speccy_James February 2014 Hardware
  • ZX Spectrum 48K+ Audio out, Speaker, Volume controlI have this lovely ZX which a friend gave me kindly two years ago. I cleaned him well and after a year he stopped working, so I did a full recap and …

    Very nice, although - as for the sound output - I use simply the MIC port, and I don't complain. :)

    Congratulations on your machine and I do hope it will bring you a lot of fun.
    Mister Beep Mister Beep March 2014 Hardware
  • Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…

    ... best playback for a specific output device. The beeper and AY ... similar quality to the AY output so I think they have ... , you will hear a high frequency hum in the playback -- this ... samples but the three channels' output is actually tied together logarithmically ...
    Alcoholics Anonymous Alcoholics Anonymous March 2014 Development
  • +3 loading problems.I can't load from tape on my plus three. I'm using a stereo to two mono cable, and when I plug the correct cable in to my computer or tape recorder …

    ... is sound out/tape out (mic on 48k), the other channel ... are feeding the tape recorder output into the +3 sound out ...
    1024MAK 1024MAK March 2014 Hardware
  • Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…

    ... Spectrum +3 on its audio output (it doesn't have a ... will basically average out a frequency that's sufficiently above its ... cutoff frequency, kind of like the inertia ...
    Winston Winston March 2014 Development
  • Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…

    ... the circuit diagram for sound output (that's page 163 ... switch state of the speaker output you have to deliver ... of the time to output the 1/0 string ... s no thinking about what frequency square wave you are ... be able to vary the output frequeny by altering the ...
    Alcoholics Anonymous Alcoholics Anonymous March 2014 Development
  • Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…

    ... (DC power input)
    J5 - MIC (audio out to tape recorder ... ). Note pin 1 is
    output from Q5 (BC548), pin 2 ...
    1024MAK 1024MAK April 2014 Hardware
  • Tape loading problem with Issue 3BI have an Issue 3B 48k that doesn't seem to want to load any tapes. I have an MP3 player connected to the EAR socket. When I type LOAD "" and start p…

    ... player simply does not output the correct frequency, it could happen with ...
    Alessandro Grussu Alessandro Grussu April 2014 Hardware
  • Something I made in Minecraft...So, this is what I do in my spare time these days (when I'm sure a lot of you will be screaming for me to come back to Speccy-land; I assure you I wi…

    ... I'll use EAR and MIC sockets for a one-way ... system - EAR as the entrance, MIC as the exit, for obvious ... 'll do with the TV output, power input, and the RAM ... so we can see the output! It just needs a bit ...
    malczx malczx May 2014 Chit chat
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... and generate the DVI/HDMI output directly from an FPGA. The ... blocks (why? the minimum input frequency for the Spartan-6 onchip ...
    Winston Winston May 2014 Hardware
  • HDMI generation by cloning video ram(coming from [url]http://www.worldofspectrum.org/forums/showthread.php?p=768257&posted=1#post768257[/url]). A thing I was brainstorming about.. Why …

    ... display especially at the clock frequency the display will want. I ... a VGA converter, and the output of the second buffer will ...
    Winston Winston May 2014 Hardware
  • SampleTracker: does it use envelopes or just PWM?Does SampleTracker accomplish its three channel digital audio via pulse width modulation alone or are envelopes involved? As a thought experiment, I …

    ... to frequency 0x000
    At rapid, closely timed intervals, setting the output ...
    catmeows catmeows May 2014 Sinclair Miscellaneous
  • Dot crawl?Hi, As I'm rather new to the hardware of the spectrum, just to confirm: is this video showing "Dot crawl" ? [url]https://www.youtube.com/watch?v=_U…

    ... microsecond line, 15.625kHz line frequency.

    The PAL system ... exactly 283.75 the colour frequency would be 4433593.75 Hz ... an issue two Spectrum to output S-video which avoids the ...
    rga24 rga24 May 2014 Hardware
  • video cable with +128 rgb jack and red + black rcaive been give what is supposed to be a video cable it has the connector on that would fit a +128 video socket and the at the other end a red and blac…

    The RF UHF output from the modulator is NOT ... /> It is a ultra high frequency carrier wave that has been ... may be the composite video output. However, in your post about ...
    1024MAK 1024MAK July 2014 Hardware
  • Clashbasher a new interface to reduce colour clashI've been working on this for a while now. [IMG]http://markamy.uwclub.net/cauldron.JPG[/IMG] Basicly its an add on for a 48k spectrum, which reinte…

    ... │ │
    │ │ f1 │ formant1 frequency │ 19.53 Hz │ 1st resonator ... . These samples can be output │
    │ to ... of │
    │ any output mode, samples are always streamed ... overall │
    │ output in 3dB steps while preserving ...
    Basher Basher August 2014 Hardware
  • analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …

    ... to sort the output in order of decreasing frequency. Counts for strings ... declared in order of decreasing frequency and to save the resultant ... efficient sequence based upon the frequency analysis.
    [code]
    3 ...
    Battle Bunny Battle Bunny August 2014 Sinclair Basic
  • 1-resistor fix to +3 sound distortion issue - any feedback?I decided - with my Dad's help, since I am little less than a butcher when it comes to soldering - to fix my +3 sound issue. I noticed the less invas…

    ... low pass filter on the output of the audio amplifier and ... capacitor to move the cutoff frequency of the filter up to ... original 100nF capacitor the cutoff frequency is about 720 Hz.
    rga24 rga24 August 2014 Hardware
  • Spectrum 48k ProblemsHi all Got my 48k today but it's playing up abit... First time i turn it on it was like this: [IMG]http://s26.postimg.org/hlg9d3f3d/IMG_20140830_…

    ... in the mono ear or mic sockets on a 16k, 48k ... were designed with a powerful output circuit (compared with modern devices ... />
    As a result, the output level from modern devices can ...
    1024MAK 1024MAK September 2014 Hardware
  • Dot crawl?Hi, As I'm rather new to the hardware of the spectrum, just to confirm: is this video showing "Dot crawl" ? [url]https://www.youtube.com/watch?v=_U…

    ... output is used and the Spectrum's chroma carrier is not frequency ...
    Zorn Zorn September 2014 Hardware
  • New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…

    ... to degrade the higher frequency components of the signal ... more than the lower frequency components, which distorts the ... when the effective output impedance (resistance) of the output stage of ... impedance should match the output and input impedance of ...
    1024MAK 1024MAK September 2014 Hardware
  • New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…

    ... to degrade the higher frequency components of the signal ... more than the lower frequency components, which distorts the ... when the effective output impedance (resistance) of the output stage of ... impedance should match the output and input impedance of ...
    Renegade Renegade September 2014 Hardware
  • Possibly daft Harlequin composite question... :SHi; My Harlequin Rev. F works fine apart from one aspect: there's no composite out... :( I have checked continuity and the discrete components. I.…

    ... start-up behaviour but the frequency was a bit too high ... coupling capacitor at the composite output of the AD724.

    ingo ingo September 2014 Hardware
<1…16171819202122…34>

Latest Posts

  • I am currently watching.....
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  • New video about S-video modification on Issue two 48K Spectrum.
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mic 1.6K 2.1K
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  • Ear + Mic bits behaviour in relation to beeper outputHave just read [url=http://www.worldofspectrum.org/forums/showpost.php?p=348953&amp;postcount=38]this old post of Joefish's<br /> [/url] in the devel…
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