[Music] hello and welcome to ask expert my name is Christopher and I'm your host as you probably noticed we've changed scenery this time and we are in our garage and to be down here we actually had to move out a lot of Secrets Martin and I know that you're one of only three or four people at Dynaudio with access to this room yeah can you talk a little bit about that it's it's because that we have worked now for 15 years very close together with a Volkswagen and this area here is actually a red area that have been improved by by the full pardon to be a area we can have an install prototype from false wine okay so sometimes they arrive here with their big trucks closed down everything is covered by by big sheets so yeah at night perhaps sometimes and then it's brought in here and everything is closed down when it is a red area nobody is allowed to come in here except a very few rows so that continue so I can't get access down no no so obviously you have access and you have that for reason so I want to know a little bit about what is that you do here the odium what we actually do down here is we take these often prototypes and and do some sound tuning a lot of the work we have naturally makes some drivers that we can put in the installation of the car and then we have to make optimize the the program for the amplifier and that would do it down here by listening to music and use a lot of computers to actually program the amplifier a lot of years I've done that for nearly 15 years yeah we have a lot of questions today we jump right into the let's do it great Jay he asks if time alignment actually makes a difference and if it's audible for you know a regular person yeah it's a good question and one of the things that that we do together with a false wagon is that every driver in the car is actually have its amplifier okay in all our cars and that gives us some to know their possibilities actually time line everything in the car okay and it does a huge huge huge impact of especially the sound stating the way you experience that the musician is in front of you in honored on the dash Porto so say and and not actually coming from from the left side or right settle so if I were to go in into a car and try to figure out if can I actually hear this time lineman I should try and notice the sound stage yeah yeah try to imagine where you're where the singer is is come where singer standing or the guitars playing and and by changing the the time alignment the the actually time that that this sound will achieve you sitting in the driver seat it can give you the the impression that actually the music is in front of you okay and time aligning in in in the base region is very very important because a lot of base system has a tendency to say boom in the in the trunk and the ambassador's are quite annoying yeah so if you can time align the bass performance in the front without actually delaying the the tweeter so much as the bass then you can really make the molestation go right up in front in the windscreen okay so Jay get in the car yeah listen for the sound stage and but one thing you said here was that you could have the sound either to way to the left or way to the right and it makes me think of some questions that we suggested because we asked what would you like to know and gave you a couple of suggestions and one of them were can we make different tunings for the car yeah I can't do that actually we do in info starting we have a setting called focus and the focus setting is actually changing the the sound stating performance of the car in some cars so for the especially for the Chinese market we actually made the sound stage perfect for the guy who actually sitting in the rear okay so that was kind of another way to make the time alignment in a different way so the most important person the guy who probably owned the big car was sitting in the in the rear and should have the stating experience from there so there's the four different kind of settings in the fall so I okay where you can make it good for everybody so it's like in the front for both drivers in the front in the front row or you can optimize it to to the driver itself like in you can call it ego kind of setting so I'm out alone and I'm absolutely then you want the white stage and and you can actually turn it a little bit to be wider and fill the whole windscreen okay so we can and we do it has the functionality yes you know every fall swimming as Jeremy and I'll point out a cars obviously filled with reflective surfaces you have glass all over the place and I start to think is there anything that we can do about it and how do you work with an environment like that it is quite an opposite environment to actually make sound in and make a good good sounding systems in then compared to your living room because as you said reflecting area is very close by your head and your ears but we kind of as a human being sort that out in in in in our brain so our brain is actually helping us in that direction what it looks for is actually to to make some recognised voices or instruments or stuff like that so if you use the timing to actually point in the direction that the brain is going to look forward to listen to then then you actually don't hear the reflexing area so much so the brain actually does a lot of the work itself it sorts out the reflection when you have some earlier sound coming to you from from a special direction then it will actually tune in to listen to that instead of the reflection but I guess when you know a car is pretty you know the con you know this is how Volvo build it every single time yeah opposed to a living room where we have no clue what it looks like it must be an environment where you you can better don't get me wrong but it's you know what you have to tune for yeah exactly I know the environment that they are trying to listen to our system in because they are sitting in the seats and I know that exactly so I can optimize actually to to to make make the car have some focus points and sweet spots as we acoustic I call it and the sweet spots I already know where people who will be sitting there so I can actually kind of optimize how soon should every sound arrived at that position so you get the full impression of a good staging and a nice sound and that's where the timeline that we talked about absolutely without that it wouldn't be possible to actually make then they will sound like something was booming in the trunk and that all was playing too loud on the left side because you're sitting very close to it so it's the balance is very important and for that we use the multi-channel the amplifiers and entertainments no you said multi-channel amplifiers because I know we talked about that in the article revoked before this and you said something to me about earlier that we use 12 14 16 channel amplifiers can you talk a little bit about what the sir give us or not maturity yep the really big advantage of having a multi-channel amplifier is the the tweeter and the mid-range doesn't demand that much power compared to the base so actually having a lot of amplifiers using the same kind of power supply can can sort things a little bit out and if they have their own channel even tweeter can get the right time alignment to compare to the mid-range that is very important to actually raise the stating up into the windscreen pocket is without it it would really not be possible so the chain actually goes that if we didn't have that multi-channel amplifier we couldn't get the timeline right and then the sweet spot you talked about would be velocity yeah kind of fussy yeah exactly when we can do it with treaters sitting in the mirror triangle of the front door and the midrange sitting a little bit low then when you can time that align that to the base performance then you can get everything in the brain to exegete to fit and and you can listen to the to the music as you would in a normal living room that's quite good yeah perfect yeah the next question is when we've combined it's from Jason and Matt and modern they they want to know what kind of sound stage that we try to achieve and that we prefer yeah when we try to make the sound staging by by tuning the individual channels for all the drivers in the car okay normally we have a setting that will optimize the the South some performance and the stating for the driver seat and also for the co-driver was sitting at an extent so they were actually due to that we have sent us a speaker in the car today that we can make an stereo image that actually is in front of both at the same time we have this focus setting that we can switch to in in the menu of the hit unit where you can actually move the the staging to fill the whole windscreen so it will go more to this more to the middle of the car hmm and and and and to the right so you actually have the very good staging but doing that will actually decrease decrease the performance in the other side yeah so we have the all sitting where it is actually in front of the driver and then we you can go to Newcomb waist mode and do it with the white staging okay so and when we have the really white setting would that mean that I was here the singer in the middle of the dashboard so riding above the head unit yeah just beneath the the the rear mirror it will actually turn a little bit to two more to to the middle of the car but what we focused most on is actually to make a wider okay so the right side of the car if you're the left-hand side driving it will actually play a little louder and come a little sooner so okay so you get the impression that the states is wide you have a big band in front of you and absolutely our first row at the concert but basically we actually do two different we make two different options for people and they connect they choose which they prefer or yeah actually for for different order so we have the left side optimize the right side optimize and then optimize for the research right okay so they actually get kind of staging in the middle of the car when sitting in the rear so we actually do it for everyone in the car absolutely it's a what you prefer you can actually use a way of centering of the stating you want but but the old sitting is for the the best achievable for everyone in the car perfect we have a question from David yeah and he's made an observation that in many cars you have large woofers in the doors and smaller some from the back yes there are newer recent fuller no actually it's very good observation the the the building of the car is actually very important that is quite large woofers in the front in in the middle in the rear doors it doesn't really matter but Lhasa Cooper actually participated in a good overall but based performance and so it's very important that that the woofers in the front actually can make some pressure in in the low frequency area so that so your expectation of the base is actually coming from the front okay if all the base was in the rear it was like that something is booming in the in the trunk but you said something about Rufus in the middle of the car they they aren't important in this or no not really because they kind of in a bad position compared to the cabinet they are actually in the middle of the cabinet and and kind of not putting in a lot of bass performance actually if you have big woofers in the front and a large woofers up over in the rear that will actually make the bass performance and it's that for you know when David is sitting in the car he has a large woofer in front of place yeah it some low-end and in the back that gives a better perception of the absolutely and and a better coverage of the whole cabinet in the low-frequency area it's very important that you're sitting inside the box and that you have to take in in mind when in building a base system that that you remove a lot of standing waves if you have to kind of yeah in the in the cabinet so you're actually cancellations there's some cancellation of the standing wave and when you say the cabinet is it's obviously in sight we have to think of it as being the cast yeah yes shell is the cabinet yeah absolutely yeah okay David has had another question in and he's made another observation it's he sees that in a lot of cars there's a free air base I think it's a shelf exactly yeah yeah and he thinks that it tends to rattle a lot yeah why don't you build a an enclosure for them in the in our design in the in the false wagon we have a closed enclosure as a support for driver okay because placing a big mover in the hatch shelf it's like it's really problematic because it can rattle a lot there's a lot of movement in the base region and and you have to do a lot of stiffness and a lot of extra work to actually make the hatch helpful for work probably okay I have seen it working but normally it will be better to actually place it in the trunk in a closing in closing closure and we do that and we do that okay but it can't work it can work yes cool well John he thinks that we should add noise dampening to the doors is that a good idea absolutely it is very important when you make some systems in cars to to secure that the drivers is placed in a good cabinet so to speak it is compared to to your living room loud speakers steady and solid cabinet are very very important for the performance in in some cars in in lower end of the price range they are doing it not because they are not doing it because they want to save weight and money in the more expensive car the the high-class car the doors are very very good down so it will be a good idea and it will benefit the some performance so if I have my own car I will actually put some experience it will improve the sound performance if we go back to you said that in in higher price range cause they are also good is that because they ask their phone or said yeah yes yes their stiffer and and the the interior is perhaps a leather and more thick and more nice to tension and the whole weight of the door is actually quite quite increased compared to the smaller cars so there is actually some noise damping in higher absolutely because the customers are buying these kind of cars will also prefer to drive on the highway with the high speed and not have all the road noise yeah and and stuff so they are actually quite more damp than the usual one okay and use just I heard that if you had your own car you would add something and that leads me to one of the other topics that we asked if people wanted to learn more about what can I do myself yeah yeah without spending a fortune so do you have any tips you talked about damping now it's anything else if you are kind of a do-it-yourself man and not afraid of actually walking around with the interior tender esterday yeah I would actually increase the damping in doors because look at it as a loudspeaker the cabinet should be stiff and dammt and to perhaps put some foam between the the interior of the door and the plate of the door will actually keep it from rattling okay that is one of the big issues in cars that things get a little loose and then they rattle yeah yeah from the bass boost then they come the rattling starts so so if you can put some damping material or some thrown between the interior that will increase the performance okay and I have a question from myself because I remember that in my first car I had a head unit where I could choose so I you know the EQ I could get it +8 in base and plus 8-inch oh yeah should I do that or should I stay far far away when you do this you kind of changed things a lot in the in the in the car like Volkswagen where we have to the the system it shouldn't be it shouldn't be necessary we have some settings that actually put some more fun into in called dynamic a little more bass a little more playing rock rock music and we have the authentic that is actually the most clean in setting supplement of the mall it put a lot of bass in for some people they like that and I would say changing the drivers in a standard in your own car not being a false wagging a and I accident add a little damping to the door that will increase the the the performance of her face thanks Trek he has a freeway down audio system in his car Martin and he feels like he has to when he's listening to them he has to crank up the power for them to play really really well is there any point to that or yeah actually he could when he have some systems and some amplification and the head unit there there could be a Mitch match how the loudness function is integrated in compared to this system now one of the reason is that loudness is actually try to increase the base level of the sound when you're not playing they're loud okay but if that is out of the scale then he will experience when playing louder it will sound very good and that's because now you outside the the functionality of the loudness function so I think what he should try to do is actually to to perhaps increase the the gain of his amplifier so he can shift the area for the loudness function actually probably we do that in our cars is very very important because if we don't do it correctly then listening to music at very low level will actually sound a little bit thin and a little bit interesting so Craig go back and check the loudness function loudness function and amplify again yourself yeah that could be a way to solve it actually if he can crank up the the amplifier gain a little bit okay he had two more questions I'd like for us to talk about one was if the the drivers that we use in in cars actually lower graded drivers than the ones that we for instance use and home speakers naturally the the construction is a little bit different these ones in cars are kind of optimized for weight because of lower weight better mileage for the cab for the fuel yeah but this the driver system and the magnet system and the voice chorus and stuff are the same so they're not down created by a by performance okay no cool and his final question was how many watts to really use Pechanga it's in the car like the Passat we're standing in front of here they have a 16 channel amplifier and we know that for the woofers they need more power so in this one there is four channel with around 120 watt in the middle and then there are the smaller channels for the mid-range and tweeters in a total of around 600 watt so we we specify each channel for the drive and especially the woofers they need more so so we have to put some high-power channels for the roofer channels great that was a lot of really good questions don't you think born absolutely but unfortunately we're out of them now so we're at the end and I want to say thank you for joining us and taking time and as always guys we truly appreciate you taking time out of your day to post questions to us thank you for watching [Music]