I can see in previous posts that i should use two ports for my Halfinator and no holes in the center bracing. I do not have the intention to use handles as ports, so I would like to know what the preferred size of the tube should be? Will one of these be suitable?
I would still like to know why I shouldn't connect the 2 HP-10W's in parallel and just use one channel for one side (just like the full size Boominator). If I make sure that the input signal is mono, then there will be no phase problems and I could play into 4 Ohms. I have read these dB calculations so many times now and I'm still not sure which of these 2 options that will give me the loudest output:
1. MONO: 2 HP-10W's in parallel on 1 channel = 4 Ohms (holes in the center bracing and just 1 port)
2. STEREO: 1 HP-10W on each channel = 8 Ohm (no holes in the center bracing and 2 ports)
I have been looking for the right piezo and it seems like that the QLM-1005 is one of the only solutions left. I read in an old post that Saturnus used the Zomax HP100 and that he has quite happy with it, so I thought that this maybe could be a substitute?
I would still like to know why I shouldn't connect the 2 HP-10W's in parallel and just use one channel for one side (just like the full size Boominator). If I make sure that the input signal is mono, then there will be no phase problems and I could play into 4 Ohms. I have read these dB calculations so many times now and I'm still not sure which of these 2 options that will give me the loudest output:
1. MONO: 2 HP-10W's in parallel on 1 channel = 4 Ohms (holes in the center bracing and just 1 port)
2. STEREO: 1 HP-10W on each channel = 8 Ohm (no holes in the center bracing and 2 ports)
I have been looking for the right piezo and it seems like that the QLM-1005 is one of the only solutions left. I read in an old post that Saturnus used the Zomax HP100 and that he has quite happy with it, so I thought that this maybe could be a substitute?
Hi there!
I'm about to construct three boomboxes. This is the first time i'm doing something that isn't related to car audio.
But before that i'd appreciate if all of you that already built these babies could help me out on deciding to do halfboominators or a boomboxes with 2 subs, 2 pezios on just one side. I don't see the need for a full size boominator. Atm i'm leaning towards putting speakers on just one side, as this would make it easier to concentrate the sound to where we party, and avoid disturbing neighbors and other folks when we use them next semester @ my UNI.
I intend to use the P.Audio HP-10w, and the MPT-001 or QLM-1005 and of course the AMP-6 Basic.
I'd like some help with calculating an enclosure, I've tried to read into this, i have no idea if this looks alright or not. I've used a qtc of 1.2.
With this calculation i would get a box with a inner volume of 52l, is that reasonable? (104 as i use 2 woofers)
I appreciate your help
I'll make a build thread later on when we get started
I'm about to construct three boomboxes. This is the first time i'm doing something that isn't related to car audio.
But before that i'd appreciate if all of you that already built these babies could help me out on deciding to do halfboominators or a boomboxes with 2 subs, 2 pezios on just one side. I don't see the need for a full size boominator. Atm i'm leaning towards putting speakers on just one side, as this would make it easier to concentrate the sound to where we party, and avoid disturbing neighbors and other folks when we use them next semester @ my UNI.
I intend to use the P.Audio HP-10w, and the MPT-001 or QLM-1005 and of course the AMP-6 Basic.
I'd like some help with calculating an enclosure, I've tried to read into this, i have no idea if this looks alright or not. I've used a qtc of 1.2.
With this calculation i would get a box with a inner volume of 52l, is that reasonable? (104 as i use 2 woofers)
I appreciate your help
I'll make a build thread later on when we get started is it better with just one hole if you make it in mono? im about to build my halfinator also.. (not all can connect to the shop page at 41hz.com. Jan (the owner) has some problems i think) .. some pages down is there a recommendation on another amp
That was my thought, but I'm still waiting for an answer from the pros
I already received the amp6 from 41hz.com, so that's the one i'm intending to use.
ah okay.. iv'e been trying since X-mas to buy an amp-6, but with no luckThat was my thought, but I'm still waiting for an answer from the pros
I already received the amp6 from 41hz.com, so that's the one i'm intending to use.
Mono will give you 1 channel of music only when going with this setup (unless you find a mono amp). So you are forced to listen to music that has the same music output for both channels so you won't miss anything. Otherwise you will be listening to only half the music. Sometimes guitar solos and other solos are recorded into 1 channel - if you pick the wrong channel, the solo is lost
However: The highest output will come from a system impedans of 4 ohm. So 2 woofers connected in parallel to 1 channel will play the loudest because you can drain double as much power from the amp.
Stereo will give you the opposite. Music in both channels - play half as loud (BUT also draw half as much power, which in the end will mean your batteries will last longer).
Personally I would go with Stereo i.e. connecting 1 woofer to each channel.
Let me just make a correction here.
1 amp with the outputs paralleled playing into 2 paralleled 8 ohms gives exactly the same output as the same amp playing stereo into a set of 8 ohms speakers. Actually a tiny bit more with an amp6 since the efficiency is a little higher into 8 ohm than 4 ohm (88% vs. 84%).
Going mono is very rarely a good idea as you loose a lot of information in the process.
1 amp with the outputs paralleled playing into 2 paralleled 8 ohms gives exactly the same output as the same amp playing stereo into a set of 8 ohms speakers. Actually a tiny bit more with an amp6 since the efficiency is a little higher into 8 ohm than 4 ohm (88% vs. 84%).
Going mono is very rarely a good idea as you loose a lot of information in the process.
Okay, I was a bit uncertain about what happens when you connect speakers only to 1 channel. I just assumed that it would be the same. Thanks for clarifying
Thank you for the answer. As i understand it, the best solution for the Halfinator should be to leave the center bracing without holes and then have a port for each HP-10W, but I'm not sure what size they should be? And will it be possible to have them both on the same side, or maybe in the front?
I searched Google and didn't find any data on the Zomax HP-100, but saw that the HP-95 was available and thought that it maybe could be an alternative to the QLM-1005?
Okay, thanks a lot.
As I have understood from earlier posts, it doesnt effect too much if I glue elements straight to the center bracing (and not making a big hole in bracing). Because it seems to be very hard to get center bracing hole to fit with element magnets.
The Zomax is, as far as I know, no longer produced. So if you find them you will be very lucky.
Instead of the QLM-1005 from ljudia.se you should maybe try to order the earlier recommended Monacor MPT-001, which is KSN-1005A replica of decent quality. Saturnus mentioned this a couple of posts ago.
Here's the link: http://www.monacor.dk/produkter/hoejttalerenheder-padiskant/vnr/110470/
Instead of the QLM-1005 from ljudia.se you should maybe try to order the earlier recommended Monacor MPT-001, which is KSN-1005A replica of decent quality. Saturnus mentioned this a couple of posts ago.
Here's the link: http://www.monacor.dk/produkter/hoejttalerenheder-padiskant/vnr/110470/
The website says "in stock", so I believe that is true, but I'm not sure if they are as good as Zomax HP100. So that's why I'm asking
Thank you for the link!
Last edited:
Those are not the Zomax HP100. I'm close to 100% certain of that And therefore the sound is not the same. I would take Saturnus recommandation and order the MPT-001 (or another replica of the KSN-1005A).
EDIT: I dunno how those HP95 you link to sound, so I wouldn't be able to recommend them.
And therefore the sound is not the same. I would take Saturnus recommandation and order the MPT-001 (or another replica of the KSN-1005A).EDIT: I dunno how those HP95 you link to sound, so I wouldn't be able to recommend them.
Okay, thanks a lot.
As I have understood from earlier posts, it doesnt effect too much if I glue elements straight to the center bracing (and not making a big hole in bracing). Because it seems to be very hard to get center bracing hole to fit with element magnets.
Actually with the changed dimensions of the HP10W you have to glue it directly to the center brace and not cut a hole in it.
Hi there, I have some questions about the electricity and LEDs:
1. Can I add a TIP31 and a LED Strip? how should I combine it with the Lepai? Has anybody a circuit scribble or something? Can I take the Source from a Speaker?
2. I want to have the LEDs controlled by low pass Input. What should I put between the TIP31 and the Speaker / What is needed to build a low pass filter?
3. How much Ampere should a Battery Charger send to the output to fill a 18Ah Battery and play the Amp with lights in the same time?
Here is a sketch of my circuit:
1. Can I add a TIP31 and a LED Strip? how should I combine it with the Lepai? Has anybody a circuit scribble or something? Can I take the Source from a Speaker?
2. I want to have the LEDs controlled by low pass Input. What should I put between the TIP31 and the Speaker / What is needed to build a low pass filter?
3. How much Ampere should a Battery Charger send to the output to fill a 18Ah Battery and play the Amp with lights in the same time?
Here is a sketch of my circuit:
An externally hosted image should be here but it was not working when we last tested it.
Hi There
First of all, thanks for alle the inspiration in here, especially you Saturnus. i just finished a boominator after saturnus design, but im having trouble whith the p.audio tweeters. They have a nasty itch in high volume and take completely over in low volume, i tried a 100, 150 and 220 ohm resistor but they took about 90% of the tveeters volume. Anybody have a solution for this?
First of all, thanks for alle the inspiration in here, especially you Saturnus. i just finished a boominator after saturnus design, but im having trouble whith the p.audio tweeters. They have a nasty itch in high volume and take completely over in low volume, i tried a 100, 150 and 220 ohm resistor but they took about 90% of the tveeters volume. Anybody have a solution for this?
