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Old 11th February 2010, 03:35 PM   #1
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Question Problem with treble

Advice please ref a harsh treble.

History first: I suffer from pretty severe hearing loss in the high frequencies due to working on jet aircraft whilst in the RAF (Lightnings and Hunters) and have to wear hearing aids all the time. These help correct the loss of high frequency but, due to being designed to correct speech create a, sometimes, harsh and thin treble when listening to music. I use an Ikon Audio Stereo 40 amp, at present into Rogers LS55 speakers having tried Ruark Talisman 2 and Sequence 400 previously without success. The Rogers ar better than the others in helping to soften the treble but, at times, are still not right. What I seem to be looking for is the sound a bit like an old 1960s radiogram but with more detail, in other words something that most people would consider dead in the treble!
It has been suggested that I fit a variable attenuator in to the treble circuit with a control on the back of the speaker (bit like a volume control but so that it would reduce the higher frequencies within the tweeter at variable levels), This seems a good idea to me as, otherwise I like the Rogers speakers and would prefer to keep them if I could.
What I am asking for is both suggestions and help in design and build as I have no electronic knowledge. My speakers are 6ohms and roll-offs have been suggested at stops of 4k, 6k and 8k or perhaps a steady slope from 4k upwards if that is possible.
Can anyone help please?
Thanks,
Geoff.
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Old 11th February 2010, 04:22 PM   #2
keyser is offline keyser  Netherlands
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It is impossible to find a loudspeaker that exactly matches your hearing loss. I would suggest you try to get your hands on a decent 31 band equalizer. With such device you can tailor the spectral balance to fit your ears. Do you have an audiogram? That might be handy dialing in the equalizer.
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Old 11th February 2010, 04:49 PM   #3
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Neat. You posted this on the whathifi forum aswell - see my answer there...
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Old 11th February 2010, 08:03 PM   #4
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Thanks for the replies. Yes I have posted this in three different places to see what advice came back so as to give me some options.
Geoff
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Old 11th February 2010, 09:26 PM   #5
DcibeL is offline DcibeL  Canada
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I would agree with keysar, what you need is an EQ to adjust to what sounds good to you.
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Old 11th February 2010, 09:40 PM   #6
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Seems like a good idea - will just have to find one - E Bay?

Thanks,
Geoff
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Old 11th February 2010, 10:22 PM   #7
DcibeL is offline DcibeL  Canada
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Sure, why not Ebay.

You can search Parts Express for the word "equalizer". There are a few to choose from over there. Or check a local music store, that sells DJ/mixing equipment.
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Old 11th February 2010, 11:19 PM   #8
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The alternative ( Artillery [ 155's ] ) so I know where you are coming from ) is to get a decent digital hearing aid set, I haven't because of the expense but you should be able to do so in the UK through your version of Veterans Affairs
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Old 12th February 2010, 07:57 AM   #9
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Thanks for the suggestions, all very helpful. However I already use digital hearing aids I am afraid so that's not really the answer I am sorry to say.
Geoff.
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Old 19th February 2010, 08:02 PM   #10
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Talking Problem solved???

Well I now have a 15 x 2 equalizer as suggested, and it works quite well. It is not perhaps the complete answer but it certainly has improved things a good deal.
I have it fitted between my cd player and tuner and the amplifier. Settings are flat to 1khz, then a slow drop to full -12db at 6khz, a slight lift at 10khz and back to flat at 16khz (not that I can hear any difference at 16khz). The slight lift at 10khz does give a slight spring to cymbols etc.
This seems to work pretty well although there is still a very slight harshness at times but, for now I can live with it and it is early days yet.
I do think I may get a better quality equalizer as this was only £50 as was bought to try the idea. I feel this one may impart a very slight hollowness to the sound.
I have also played around with speaker cables and have gone back to cheaper 149 strand for the base/mid connection and 49 strand for the tweeter. I was using more expensive types but the cheaper types are a lot better. Solid core produced too much heavy base and many multi strand was too bright!
I may yet try building myself a some single cone speakers to see what the end results are but that is for the future.
Regards,
Geoff.
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