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RadioShack 42-2101A schematic

I'd like to change the EQ curve to flat. It's a bit bass heavy for genral use.

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 20 Answers

SOURCE: Feedback from bass amp

first check capeciter in rectifier stage.

Posted on Dec 07, 2007

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tonysalsa
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SOURCE: setting low pass and bass eq on amp

to it sound good to you good luck

Posted on May 27, 2008

SOURCE: bass frequncy

Also bear in mind those are crappy eq's in that zoom, personal recorders are great but aren't known for pre-amp and eq quality, etc. If you're recording at proper levels and with no eq and there's no clipping on playback either then I would say you may be tweaking the eq more than it can handle when you use it. Try not boosting freqs so much, generally anything over a 6db. boost is drastic, especially with the lousy Q of cheap eqs. Try attenuating highs instead of boosting lows so much, I'm afraid yer just gonna have to live within the limitations of the equipment or get an outboard eq in front of the D.I. box and eq it during tracking or get an external recorder for mixdown and put the eq between the zoom and mixdown recorder and eq during mixdown. Here's a little trick that may help - when mixing turn the volume way down low for a minute till you can barely hear it then turn it up a bit more and see if the balance of the highs and lows is good, it will give you a general balance wich will sound good at higher levels. Volume level when mixing affects the way we hear, the frequency response curve of the human ear is totally nonlinear, we hear freqs differently at varying levels, mix too loud and it will tend to be bass light, mix too low and it will tend to be bass heavy, the fletcher munson equal loudness contour curves wich express the ears frequency response graphically, indicate that the nearest to flat response is at 85 db. spl

Posted on Aug 06, 2008

arthurroger
  • 170 Answers

SOURCE: Peavey Bass Amp TKO115s

Start with a clean setting - zero cut and zero gain on the Eq. Play a song close to the amp, and then move away, playing the same notes. Do you still get the distortion? Change lower the input gain and repeat the test. Lower the output gain and repeat. Are any outboard distortion pedals in the mix, such as overdrive? Eliminate them. Run straight through from your axe to the amp. Check for any distortion settings. Set everything including reverb to zero. When the distortion disappears, this is your base setting.
Change only ONE parameter at a time. When the distortion comes back, you have found your problem.+

Posted on Dec 03, 2008

Raditronic
  • 196 Answers

SOURCE: no problem just need advice

if you use for bass need to adjust to a 120Hz in the amp & eq

Posted on May 06, 2010

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Carlsbro Bass Reactor 400 bass amp - power section dead


• Could be drive transistor , output transistor or both on the main amp.

But check for power supply and in the preamps also.

• A signal tracer will come in handy when troubleshooting these kind

of symptoms.

• Measure supply voltages,

• Check offset voltage

• Check idling current

Isolate , and trace afterwards.


• Schematic is really needed when there are burnt and unrecognizable

component. But one can use similar schematics to analyze circuit

problem.

Aug 01, 2012 | Audio Players & Recorders

1 Answer

No problem just need advice


if you use for bass need to adjust to a 120Hz in the amp & eq

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How to incrise the bass of sony MHC-RV777d


Is it possible that the speakers are out of phase, where one speaker is moving out, the other is moving in, resulting in zero bass?

Other than checking wires, making sure + on amp is linked to + on speaker, try changing the eq settings, or sit them next to a wall - walls help bass a lot.

Jan 08, 2010 | Sony MHC-RV777D 220 Volt Hi-Fi Music...

1 Answer

Peavey Bass Amp TKO115s


Start with a clean setting - zero cut and zero gain on the Eq. Play a song close to the amp, and then move away, playing the same notes. Do you still get the distortion? Change lower the input gain and repeat the test. Lower the output gain and repeat. Are any outboard distortion pedals in the mix, such as overdrive? Eliminate them. Run straight through from your axe to the amp. Check for any distortion settings. Set everything including reverb to zero. When the distortion disappears, this is your base setting.
Change only ONE parameter at a time. When the distortion comes back, you have found your problem.+

Dec 03, 2008 | Peavey EQ215FX Home Equalizer

2 Answers

Setting low pass and bass eq


Hello, i have a hifonics brutus also, in the manual it states to set the eq at half way, so that there is no clipping or at least to prevent clipping , the eq will make the bass punchier, if you do go pass half way, i would recommend to readjust your gain settings, also check your head unit settings and make sure everything is flat, bass, mid bass etc. example i had my eq past half but i had my gain at mid way, it was hitting hard, then i tried turning the eq all the way down and the turning up the gain and the bass was smoother so it depends where you set it, and what settings you have on your head unit tone control (bass, treble etc)

May 15, 2008 | Hifonics Brutus BXi 1206D Car Audio...

1 Answer

GETTING BETTER SOUND QUALITY


An equaliser is, put simply, a more complex tone control, giving you the ability to cut or boost more specific frequencies than a tone knob, or bass & treble controls.

It comes in handy for tweaking the sound from your hi-fi to just the way you like it. But beware, as it can make your hi-fi produce sounds that are so bass or treble heavy, that you can damage your speakers if you're not careful.

Adding another compnent into the chain (like a graphic EQ) can add a little background noise but this Technics EQ is a pretty quiet one & you probably won't notice the noise apart from when there's no music playing & you've got the amp turned up high.

Jan 10, 2008 | Technics SH-GE70 Home Equalizer

3 Answers

Bass frequncy


Hi there,
Although I am not familiar with the Zoom HD 8 Track I am a former sound engineer so may be able to offer some general advice.
Firstly, because the wave pattern of low frequencies is very long, there are a number of things that will greatly effect bass response caused by standing waves.
1) The position of your bass monitors. Ideally these should be low down but not directly on the floor, especially if the flooring is wooden.
2) Try your monitors/speakers at a slightly different angle. Bass can bounce off walls, back towards the sound source and phase out the signal, rather like a noise cancelling system.
3) Try listening to the sound in different areas of the room. You will be amazed at how the sound pressure level will vary, simply by you moving from one position to another.
4) Never put bass tracks exactly at centre, always offset them slighly by a few degrees left or right.
5) Do some of your mixing using headphones, you will not have to worry about standing waves. But remember that things sound very different on speakers in free space.
Strangely, the reason you are getting distortion when you turn things up is probably because your bass is on the verge of over modulation to start with. Really bass is felt, not heard. You could try is to decrease your mid and high frequencies a little. The ratio between high frequencies and low ones will then increase by default and your bass may feel heavier.
What are you mixing?

Dec 31, 2007 | Koss EQ50 Home Equalizer

2 Answers

901 EQ1915


No. You may think you're doing it with the first solution, but the EQ curves introduced by the Bose Active EQ are extremely steep at the extremes. One could just as easily advise that the RIAA phono EQ curve (look it up) could be simulated through an external EQ, but why would you want to try? The best you would come up with is a ballpark match. Don't we really strive for accuracy?

Bose 901's employ 9 full-range, 4"-diameter drivers in each cabinet, hence there are no tweeters, no woofers and no internal crossovers. You can probably imagine how much EQ it would take to make a full-range driver, with its inherent limited voice coil travel and steep roll-off at the extremes, respond as if it was, say a 12-inch woofer, or a tiny dome super-tweeter.

Every series of Bose 901 that came out had its own specific matched series of Active EQ to compensate electronically for the natural limitations of the individual drivers. I imagine there were a lot of major simlarities from one to the next and that you would not be too far off the mark to mix a Series-IV EQ, for example, with a Series-V speaker pair, but I really doubt you're going to dial in the same curves with a manually adjusted equalizer without some specs as a guide.

Try to find the correct Active EQ on eBay. You’ll be much happier with the results.

Dec 01, 2007 | Bose 901 EQ1915 Home Equalizer

6 Answers

Bass amp for guitar?


i say it can! u would get a nice clean sound! acoustic guitar sounds nice through a bass amp!

you probably wouldnt get distortion out of bass amp though! depends on the bass amp! some bass amps have built in effects! e.g distortion

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