Mottlefeeder
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Everything posted by Mottlefeeder
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Nice looking kit, but at £800-£1000 for a dual channel Apollo, I think it would be out of budget for many people looking to fix this specific problem. David
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Agreed, a rack-mount two-channel 15-band graphic eq would work, and be cheap to source, but it's big, and you are only using about a third of the sliders. Getting that function in a small box was the starting point of my quest, but when you start adding in the cost of say 2 graphic eq pedals followed by a headphone amp, the cost goes up very quickly. David
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Thanks for that - I'll check it out. Is it available at the budget end of the range or does it appear part way through? David
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I use straps by Leathergraft (with a 'g') - a Liverpool based small company. I use the 100mm wide leather-neoprene-suede sandwich ones. https://leathergraft.co.uk/shop/ols/products/the-softy-guitar
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A simple power supply is not a major problem - it has a fuse, transformer, bridge rectifier and two smoothing capacitors. Your cheapest option to avoid paying out for an amplifier-rated transformer would be to buy two smaller 18-0-18 transformers and wire the outputs to give 36-0-36. That's still £40+ just to see if it works... Connecting to the board would be neater with the right plug, although you could just bypass the plug as in the photo - you could hard-wire it, or use an XLR for power and jack for signal. I'm wondering if the plug is a Molex - they were common at the time, but some were limited to 12v max. They are still used on PC power supplies to disc drives. David
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OK, back to my original question - do you have the amp that this was connected too, in which case you have the mating connector (with or without working electronics connected to it) or are you hoping to source a connector that will fit? David
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Thanks for your thoughts, but I think we are trying to solve different problems. I'm looking for eq between a mixer and IEMs to compensate for damaged hearing. A dedicated mixer with swept mids is not going to be small, and a typical fixed 3-band eq mixer varies the mids at 2-2.5kHz which is too low. I had hoped to post this as a viable solution in the IEM bible thread, but it's looking like only one interface offers this facility. David
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Too easy
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Are you aiming to mate with it or check out whether it is passing the right signals? David
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Wow - hadn't thought of it that way before. David
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Can anyone fill in the gaps? Steinberg UR22C - yes SSL2 - no Focusrite - no Presonus - no Behringer - ? M-audio - ? Tascam - ? Others - ? Thanks David
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Thanks for that - would work well for the whole band on iems, but less so for the first band member sticking a toe in the water. We've had a crop of impaired hearing threads recently, so I thought I'd see what was available to help those players. David -
Hi Chaddy. Thanks for the info - another one to cross off the list. I'm looking for 'black boxes' with headphone outputs that can store the eq profile of hearing aids. Audio interfaces looked like a good bet based on my existing one, but it seems to be unique in having that facility. David
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I'm interested in finding audio interfaces that remember and apply EQ settings when no longer connected to a PC/Mac/etc. Can you tell me if this one does? David
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Interesting, and it would be good if there was a pc equivalent, but not so useful for live event monitoring. David
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Thanks for this David
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That's clear enough.
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Thank you - I shall cross that one off the list. Any comments on M-audio, Tascam, Focusrite, Behringer... David
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May I ask where you found the information about Class C amplifiers being used for audio? My Google searches only give me sites saying Class C is suitable for RF and tuned circuits, but not audio. David
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A question for any audio interface users in the community - what EQ facilities are built in to your audio interface? The Steinberg UR22C has digital signal processing built in so you can adjust compression and 3-band EQ while it is connected to a PC (with or without a DAW running at the time). When disconnected from the PC, it retains that EQ profile. The screenshot below shows what you can set up. The advantage for me as a hearing aid user is that I can set up an EQ profile that mimics my hearing aids, and then use the interface as a me-them monitor mixer feeding my IEMs. Is this facility commonly available, or have I just struck lucky in my choice of interface? David
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Just a thought, if you have LEDs working but no audio at all, it might be worth looking at the voltage doubler first. David
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That's all I've got, sorry. Having said that, the block diagram shows a fairly conventional set of 'blocks', so you could probably work out the circuit from the components in the vicinity of each i.c. David
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There is no circuit diagram available from the designer, and the double-sided PCB has been painted on both sides, so it would be difficult to trace the circuit from that. The instructions include a block diagram but that is all you get. I think I still have my build instructions; if so I can send you a copy. David
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Ideally, avoid making it a cube, and aim to have each internal dimension different to the others. The golden ratio (each side 2/3 of the next biggest?) probably doesn't work for a 2 x 10 in-line. David
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Coming in a little late, but I have hearing loss, use a 1 x 10 on the floor as my main rig (!), and have gone to IEMs. There are some small mixers out there that have a 3 band EQ. That gives you some scope for taking an ambient mic input and/or a feed from the pa, and a feed from your bass/bass amp, and putting the missing mids back in to be fed to your in-ears. Eg the Alto ZMX862. Some PC audio interfaces can also be used stand-alone and can EQ and limit 2 channels into headphones, eg the Steinberg UR22C MKII (There may still be one of these for sale here) David
