Dexlee Clutched January 4, 2007 Share January 4, 2007 Hi guys, found out that my 4 ch amp gain is set at 11 o-clock for both tweeter and mid. Normally my listen vol for my P80 HU is set at 38-40. Is it ok to set the amp gain to higher? ↡ Advertisement Link to post Share on other sites More sharing options...
Sarong1 1st Gear January 4, 2007 Share January 4, 2007 (edited) Your P80 max vol is 65? Norm to set is at about 2/3 of 65 as max, which is about 44. If you think the dB is not high enough for you, you can increase the gain on your amp slightly, as a norm too, the gain on the amp should not hit more than 2/3, which is about 1 o' clock. That means, between 11 to 1 o'clock, you have 2 HOURS to play with.....dun max it out...either your amp, speakers or your EAR will be gone... Edited January 4, 2007 by Sarong1 Link to post Share on other sites More sharing options...
Dexlee Clutched January 4, 2007 Author Share January 4, 2007 Thanks bro sarong1 for prompt reply. It just that I sat in my frens car and they just need to set vol to 20+ to acheive the normal dB as my P80 at vol 40. So I thought my gain level is set too low. Now i can safely leave the gain at 11 o'clock. Thanks for your explaination! Link to post Share on other sites More sharing options...
Sarong1 1st Gear January 4, 2007 Share January 4, 2007 Well, the diff between your HU and your friends, is that you have more steps to play with...they will reach "climax" earlier than you.... Choose either one. Link to post Share on other sites More sharing options...
Erwinseow Neutral Newbie January 4, 2007 Share January 4, 2007 Your tweets should have a smaller gain than your mids. Setting the same means your tweets will be much louder than your mids. Your sound may be too "harsh". You can reduce the gain from the HU. But preferably done on the amp gain. Link to post Share on other sites More sharing options...
Kermit 1st Gear January 4, 2007 Share January 4, 2007 What is the reason thet "your tweets should have a smaller gain than your mids"?...What if the sensitivity of the tweets is lower than the mids? hmm....what if you're crossing over at a point where you'll need to boost your tweeter level...hmm... Just off the cuff only lah. I think you are refering to the "normal case" scenario...cheers. Link to post Share on other sites More sharing options...
Ractis Neutral Newbie January 4, 2007 Share January 4, 2007 btw, have you increased your P80 CD source gain to max? Link to post Share on other sites More sharing options...
Dexlee Clutched January 9, 2007 Author Share January 9, 2007 CD source is set to +2 Link to post Share on other sites More sharing options...
Bobcatsysop Neutral Newbie January 10, 2007 Share January 10, 2007 Hi Bro Ractis, You coming to nasi padang meetup tonight? Didn't see you recently.. In our Pioneer P80 HU, are you referring to SLA CD/FM Level? as your "CD source gain"? To me, this feature is to 'balance' the sound from your CD to FM radio, so when you switch from CD to FM forgeting to lower the volume, you can use this to 'balance' to the same, higher or lower volume. You will find that by setting at +2, it is about the same balance between CD and FM. Link to post Share on other sites More sharing options...
Ractis Neutral Newbie January 10, 2007 Share January 10, 2007 Hi Uncle Bob, recently quite busy, but i'll probably appear after I install some new speakers, maybe next week. For our P80, the lineout voltage will be higher when source gain is set to maximum. A higher voltage RCA signal is beneficial for combating induced noise, so I believe it is better to set our CD source gain to maximum, and reduce/adjust the amp gain to match the HU. This might help with hiss/alternator whine problem and improve overall sound dynamics. Link to post Share on other sites More sharing options...
Kermit 1st Gear January 10, 2007 Share January 10, 2007 (edited) logically so. However, the source gain is seldom set to the max (usually only 3/4) to allow "headroom" for cd recordings which may have high outputs and wide dynamic ranges. Otherwise, when a super-duper bass strikes, sure kenna distortion...It is for practical reasons that we dun max it. Higher voltage RCA may not necessarily combat induced noise, unless the noise is generated by the amp itself. If the source RCA is the culprit, more noise will be amplified. Yes, when you set the source to a higher output, you can reduce the effect of hiss and alternator whine. However, if these problem are there in the first place, wouldn't it be better to get to the root of the problem then to just mask it? We limit our flexibility of tweaking if we cannot set the gain level beyond a certain level.... Edited January 10, 2007 by Kermit Link to post Share on other sites More sharing options...
Hyun Neutral Newbie January 10, 2007 Share January 10, 2007 very interesting, have u confirmed with pioneer tech people? increased SLA should result in higher voltage cos it's louder, that's right, but the method this is arrived at - is it a further AMPLIFICATION of the signal, or rather the other way round: SLA +2 is the NORM level, and SLA +0 is a REDUCTION of signal? cos we try not to amplify in the wrong way, so if SLA +0 is a reduction signal, then we can happily set SLA +2 without any worry. Link to post Share on other sites More sharing options...
Sarong1 1st Gear January 10, 2007 Share January 10, 2007 This is what is gotten from Pioneer website, they define SLA as Source Level Adjustment (SLA): This function prevents radical leaps in volume when switching between sources. To use this function, you compare the volume level of the sources (AM, CD/CD changer, AUX) to the FM level, then you adjust the sources level to match that heard when listening to FM. Since the reference level is based on the FM volume, SLA is not possible on FM. So, I am not sure if by adjusting the SLA volume, we are effectively increasing the voltage of the source or, a matching of source level between the CD and that of the FM and AUX. You may want to note that it is written as "since the refererence level is based on the FM volume, SLA is not possible on FM"... Link to post Share on other sites More sharing options...
Ractis Neutral Newbie January 10, 2007 Share January 10, 2007 Not sure how it's implemented. I always thought the specs given (ie. 5V output for the P80) is the peak voltage level. And to reach this level, probably must set source gain to max, volume knob to max, EQ to max etc and even then, the music track is set to all high bits, then we can reach the specified 5V. Maybe someone can test the output with a multimeter :) Link to post Share on other sites More sharing options...
Bobcatsysop Neutral Newbie January 10, 2007 Share January 10, 2007 Hi Bro, <So, I am not sure if by adjusting the SLA volume, we are effectively increasing the voltage of the source or, a matching of source level between the CD and that of the FM and AUX. You may want to note that it is written as "since the refererence level is based on the FM volume, SLA is not possible on FM"...>> When I first got my P80 early Apr 2006, I was playing around with this SLA CD/FM Level. That's why I know that it is meant to balance the volume btween your FM and CD. By starting it at Level 1 when playing a vocal CD, when you move up to level +2, you noticed the immediate increase of 'slight' loudness of the vocal to more 'lively' and can feel that the 'vocal' is lifted a little. Thereafter, when I switch to FM and back to CD, the volume remains constant. At level +3, it is a little louder but the vocal doesn't sound right to me. Thus, I set it at level 2. Therefore, I can say that this SLA thingy is also increasing the voltage of the source as well thus doing both functions. Link to post Share on other sites More sharing options...
Sarong1 1st Gear January 11, 2007 Share January 11, 2007 Interesting, thanks for the clarification Uncle Bob. Link to post Share on other sites More sharing options...
T1000 Neutral Newbie February 2, 2007 Share February 2, 2007 hi...i can't start a new thread so i have no choice but to tag along using this my previous setup was with a pre-amp and i listen to mostly dance/trance music...so with a pre-amp, i can get the 'echo' bass effect. however, due to some problem i have it removed. so now the amplification is solely from the amps [have 2; one for speakers & one for bass tube]. i realised i have lost that 'echo' bassy effect. like to ask if i can still tune back this effect without the pre-amp? sorry, dunno much on those terms. Link to post Share on other sites More sharing options...
Bobcatsysop Neutral Newbie February 2, 2007 Share February 2, 2007 Hi Bro, Sorry I have no experience with pre-amps that has EQ tuning. However, I have heart that some pre-amps have "reverberation" capability that can produce 'echos' but not sure if any 'normal' amps can produce such echos. Perhaps other bros have something to contribute? ↡ Advertisement Link to post Share on other sites More sharing options...
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