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joval 24th February 2006 03:03 AM

Konzert Amp & Speakers Website
Good morning to all,
Thanks for such a nice site. I am a new member from Philippines, looking for website of Konzert Amp & Speakers. I have a karaoke machine. PLayer is Karavisiion MD888 / Konzert Sub-Mid-Tweeters / Amp is Konzert AV302. I want to improve the sound. I hope someone can help me out.

Thanks & Loud Power,

clem_o 24th February 2006 06:59 AM

Hi joval,

The professional amplifiers from Konzert are from China, haven't heard of anyone who has a schematic nor much technical info. No idea if the lower-powered stuff is from there as well, but would guess that it is.


fish4u 3rd March 2006 05:09 PM

hi! been away for a little while..

im also interested with these speakers, at their prices they seems too good to be true. but i've heard many feedback that they're ok.

are you sure these are just from china?
i've heard its some sort of alternate brand for daichi(another local brand here).


clem_o 3rd March 2006 10:30 PM

Hi fish4u,

The professional amps are from China. Speaker drivers, I don't know. The only experience I have with their loudspeakers is a pair of 300W 12" dual voice-coil units I bought I looooong time ago. Back then, Konzert wasn't marketing any amplifiers yet, they were concentrated only on loudspeaker drivers. Frankly, the build characteristics for these units are very different from units from Dai-ichi, so I would venture that they are not from Dai-ichi. But now, times have changed and I haven't really had a look at the current offerings, so what you've heard may be true.

Regarding sound - generally, you get what you pay for... :-)


kvx 23rd July 2006 07:46 AM

Hi guys,

Any idea how this speakers compare to each other? Had a lot of crown drivers, but i was disappointed when i found out that even 2 of them of the same model sound different, 1 has a lower (much lower) sensitivity. I've even seen models marked as 105 dB/W/m, this is too much to be true! I just wish I'd have an spl meter to verify this.

djQUAN 23rd July 2006 09:17 AM

I'll still go with targa. :P:D

TonyTecson 23rd July 2006 10:11 AM

hey guys,

they could be dai-ichi's for all we know....

almost anything electronics nowadays are made in china....:D :D

clem_o 26th July 2006 12:30 AM


Originally posted by kvx

2 of them of the same model sound different, 1 has a lower (much lower) sensitivity. I've even seen models marked as 105 dB/W/m, this is too much to be true!

It isn't possible to get 105db/W/m on a dynamic speaker - not unless you have it in a horn. Or, they did that spec at one of the driver's resonant frequencies!

I once (well, many years ago) saw a very well-known local manufacturer test its drivers - a signal gen set to 'sweep', running maybe 500Hz to 5KHz. TWEEEEEEP. That was it. If it sounds, it's ok, put it into the box.

So, I wouldn't be surprised if you find WIIIIDE differences between drivers of the "same" make.


audiomachines 26th July 2006 08:13 AM

hello guys,

that's why i still hold on to my old 15''s starvox, with a properly design crossover (not the one you buy of the shelf from raon) you can really make it sing.

clem_o 27th July 2006 12:49 AM

Starvox? Their tweeters were pretty bad - worse than dai-ichi stuff. But I haven't seen / tested their bass drivers, so it's possible. Or, you got lucky and got a good one!



audiomachines 27th July 2006 06:45 AM

hi sir,

these 15''s starvox were nearly 30 years old, IMHO they were made in a time were manufacturer's know what they are doing, today sir, how many local manufacturers publish their drivers T/S parameters? response plot? some of my collegues in the sound system business (mostly audiophiles,older and more experienced than me) say that it is one of the better (not the best) loudspeaker made locally, and I agree.
very narrow winding gap for max efficiency, thick top plate so that the voice coil will be kept cool and can withstand more power, very light cone, flat spider (not the cup type) to minimise voice coil rubbing during high excursion. sure
it doesn't perform as well as the JBL's, ElectroVoice (my favorite), Emminence, Celestion, Wharfedale etc. But I believe it is one of the better made speaker locally, something we Filipinos can be proud of.

good day

ps. maybe we should start another thread sir.:D

clem_o 28th July 2006 02:18 AM

Hey, I wish they still made things like that today! :-)


audiomachines 30th July 2006 09:45 AM

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hello guys,

amen to that sir,amen. how i wish too... here are some pro audio amps from china. Konzert K2 and the subwoofer pounder (or toaster:D ) the Konzert H3000, can blow your ever famous Crown 1860 dual magnet
(stack magnets) 18in. speakers with ease. Crown 1860 has a 4 in. 4 layer voice coil, wound with a #25 magnet wire!

good day :)

TonyTecson 30th July 2006 12:00 PM

hey audiomachines,

do youhave pictures of its innards? i bet it is QSC clone just like the Kinetics line of amps sold locally....

audiomachines 30th July 2006 03:10 PM


no sir, but i had repair some of them, Konzert k2,k4,k6,k8,and the power plant of them all k10. The k series is a linear dual differential input, 3 deep darlington ckt on the driver and output stage, basically a very low bias class b perhaps. (the heatsink barely gets warm at idle and yet k6 and k10 has a rail voltage of +/- 120V and +/-140V respectively) while the h3000 is a class H design with a rail voltage of +/-70V for the lower supply and +/-140V for the high supply, does not use mosfet to switch rail but instead it uses bipolar tranies, similar to the Crest Audio CA Series (i think), sir i think you are referring to the Kinetic CS 1000? yes sir it has a topology just like the QSC's, I had 4 units a long time ago.

good day :D

clem_o 31st July 2006 12:28 AM

Any common faults in those you serviced?

Thanks for the info!


TonyTecson 31st July 2006 02:44 AM


how about transformer size? how heavy are they? torroid or ei's?


for pa work, class b is not bad....:D

TonyTecson 31st July 2006 03:18 AM

oh, btw, i know MGR is developing some class H power amps, you may pm him in case you are interested...

MGR 31st July 2006 03:36 AM

Hello guys
The konzert K series amps K1,K2,K6 etc is made by the chinese company Aolong.In china they call it M1,M2,etc.Also the H3000.Hope this helps.

Regards MGR

audiomachines 31st July 2006 06:28 AM

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hello again,

I forgot to mention that there would be a trade show exhibit at World Trade Center this coming August 9-12, 6th PALMM-Philippines, admission is free. Thanks;)

audiomachines 31st July 2006 07:57 AM

hello guys,

k6 (2 RU) weighs around 20kgs, the k10 (3 RU) and the h3000 weighs around
30kgs i think, really heavy. they all utilized a torroidal transformer, and wimpy filter caps, a total 10,000uF per rail/channel (there are 8x10,000 uF/100V or 80V caps on the power supply board they connect them in a series to accomodate the supply voltage and they dont have any DC rail fuses! only the torroids primary are fused!), common problem, busted ouput tranies. M-Audio MA/CA series (not to be confused with the 'REAL' M-Audio that manufactures studio electronics) MusicFocus, Kesler. they all have the same amp modules as the Konzerts. I dont know about these other brands from china BTS, Lexus, Labon etc. if they also use the same amp modules. These amps has a built in limiters that sounds nasty, they were also 'mindless' , they deliver brute power without any control, unlike the Crown's with the IOC,ODEP ckt., Crest Audio (IGM, POWERLOCK ckt.), QSC (output averaging ckt) Peavey (DDT ckt) to control the power output of the amp. At these power levels (1KW and up) You have to be very carefull when you use them especially on live sound (gigs), ever seen a JBL 2226 driver in flames? well i did! :D A simple beep!,zonk!pot! spike!, noissseeee! due to bad interconnectors, line transients, or as simple as dropping of a microphone on stage could blow several drivers at an instant and you will get a nasty electrical shock if you accidentally touch the output terminals of these amps while they are cranking.

good day friends

rlg_200 5th September 2006 06:42 AM

hello guys!

Does anybody has an available power heatsink specially used for TO-264 plat pack.

TonyTecson 6th September 2006 02:39 AM

you can go to Spin Electronics in mandaluyong city, "crossing" along edsa. they have huge heatsinks you can use.

you may also want to get in touch with julian wales, conrad engineering,

rlg_200 6th September 2006 02:51 AM

Thanks tony for ur info. I try to go to spin electronics in mandaluyong.

fish4u 6th September 2006 04:17 AM

psst tony..
where exactly spin electronics is? any landmarks?
sorry im from alabang area (south manila) traffic is horrible.
thanks kabayan.

wheew! a long time since i last posted on this forum! missed diy audio!

TonyTecson 6th September 2006 07:13 PM

it is walking distance from edsa, take the street going to bermuda motels, then turn left first corner, then right at the 2nd street. they have billboards, you can not miss it.:D

volks77 6th September 2006 08:38 PM

thanks sir tony,

found the spin's website they also provided there the shop location map. I'll also visit the place one time for my parts needs.


jayrjoe 14th September 2006 03:22 PM

Hi audio machine,

im jay-r from cagayan de oro city.

need some help of your knowledge...

ive seen the K2 and H3000 from one of your post. do you own those konzert amplifiers? what class of amplifiers are kozert? class H?
i have one unit K10, used to drive the my four pieces 18 inch T&T subwoofers, double magnet and double spider.

have you heard those T&T drivers?

is the H3000 still available?

thank you for the help

audiomachines 15th September 2006 12:08 AM

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hello jay-r,

I guess your into pro-audio biz too huh:D , Yes I own those amplifiers.
Konzert K10 is a low bias class B amplifier while the H3000 is a class H type. The H3000 is not available in the market anymore they are replace with the new Konzert V12 I think it is a repackage H3000 amp modules. Same ckt, new amp chassis. Yes I know those T&T speakers. they are distributed by SPL Trading in Binondo Manila. I think they are much better than the Crown 1860. Yesterday I busted eight 1860's on a Subzero Wbin with the H3000, they are really powerful amplifiers. I prefer using the H3000 on the bass bins and the K10 on the mids. Hope this helps.

Best regards,

rolandong 15th September 2006 02:05 AM

hi fellow pinoys,

Also have a pair of konzert 12" ~300W in the garage bought some time ago for dipole subs but now junked.

As hands-on to prof.Leach book Introduction to Electroacoustic, i'd like to construct my first diy vented bass reflex.
Problem is how to obtain TS parameters for these drivers.

I've read from Rod Elliot's ESP site about obtaining these.
I know its easy but I was just wondering if anyone knows where to find these TS parameters maybe a website or have done these before.


jayrjoe 15th September 2006 02:29 AM

wow thanks for your help audio machines, now i know the reason why my K10 limits easily, i mean clipping lights at 2 speaker per channel but still im not satisfied with the output power.

im planning to purchase an amplifier use to drive those T&T subs,
my first choice is the CA20 amplifier from sounstandard. do you have experienced with that amplifiers? or how about the I12
( Iseries) 1500 rms watts at 8 ohms, from TASSO. are they really Class H amps?

or maybe if you will recommend, i ll go for the V12 from konzert. what is its power rating?

and lastly how would I post pictures on my post, ill send you some pics for my K10, low end cabs and mid cabs.

thanks again mate.

more power:D

jayrjoe 15th September 2006 02:29 AM

hi audio machine,

wow love to see the pictures of V12 , im very interested. hope you could send me some pics with those powerful amps.
ok now i know how to add the pics didnt notice the small icons below.
ill post some pics later.

cheers mate...

jayrjoe 15th September 2006 02:29 AM

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hi audio machine,

here some few pics of my little noise making system..

jayrjoe 15th September 2006 02:29 AM

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some pics continued...

jayrjoe 15th September 2006 02:29 AM

maybe ill post some pics later, im still in moderation...:)

im using the ORG 234 crossover and the 215 band Konzert
equalizer. the top most is tone control with built in amp rated at i think 50 watts rms, for the meantime use to drive my horn tweeter.

hope you could give me some suggestions on what would be a fairly good compressor, i plan to buy one, is ORG ok? ive seen their compressor limiter on thier site. ive also seen the soundstandard compressor limiter.

i have no plan to buy those branded one like the dbx, or DOD cause it is mainly use in our garage...

thanks guys.

more power...

audiomachines 15th September 2006 04:07 AM

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hello jayroe,

Here is also my noise making machines too :D Alesis MEQ230 Dual 30 band Eq,Wharfdale EZ Verb FX Processor, Phonic PCL3200 Compressor/Limiter/Gate, Wharfedale Procomp Compressor/Limiter/Gate, Behringer Super X Pro Crossover CX3400, Phonic MQ3600 Dual 31 Band EQ on my processor rack. Getting ready for the Christmas season huh:hohoho: Sound Standard CA20 that's one monster amp he he he, are you into mobile disco or into live sound? matigas mag bass ang K10 (sorry about that mod, having a hard time translating) that is why I prefer the H3000 for driving my bass bins (L36,Sub0, Subscoop) ( malambot mag bass) sorry again mod.

Best Regards,

audiomachines 15th September 2006 04:14 AM

hello rolandong,

I would suggest the "Loudspeaker Design Cookbook" by Vance Dickanson. Available at Alexan Commercial. At the end of the book there is a step by step guide how to get the T/S parameter of a speaker using a signal generator, frequency counter, DVM. Good luck

Best Regards,

rlg_200 15th September 2006 06:34 AM

Hello, Audiomachine,

May I know who is the maker of tnt speaker? and also who is the dealer in binondo of this speaker, also the price of this speaker?

how much the power in rms that you used in your sub. do u have a lights in sounds company? can u give the technical information or the block diagram on how to set up the light sound?

Pls. I want to know more about the set up of live sound, because I'm planning to build a light and sounds soon. as of now I have may own power amp. i make it and I tested it for 400watts rms crown instrumental speaker and it sound good. and I'm planning to make it in bridge mode to produce a 600watts rms.

Anyway, my amp is symetrical mosfet, it is design by anthony holton it is av400. it is produce 270watts rms @8ohms, 400wattsrms @4ohms, and according to the designer it is produce 700watts rms @8ohms in bridge mode.


audiomachines 15th September 2006 07:33 AM

hello rlg_200

Sorry my mistake dudes, it is not SPL Trading, but Sound Professional Trading and it is located at #3178 Limay St.Manuguit Tondo,Manila not in Binondo, I was thinking about Sherwood Electronics Inc. dealer of snake cables, connectors and wire, sorry about that.
T&T speakers are from China, here is their email ad I use around 1.5kw rms of amp power per channel on the subs. Sure I can send you a block diagram of a sound reinforcement system. But I suggest you research about sound system engineering, there are so many topics i.e. miking an instrument, choosing a mic, gain stracturing for optimum GBF (gain before feedback), the basics of mixing for live sound, the mixing console, etc.

hello jayrjoe,

Forgot to mention the Labon power amp available at nictron marketing really a monster amp class H rated 2.5Kw rms into 8 ohms more powerful than H3000, CA20 and K10 :devilr:

jayrjoe 15th September 2006 10:47 AM

hi audio machines,

just viewed your noise making machines, wow that was great:D
im sure they'll produce pretty lound noises:D

your right the bass of K10 produces chest thumping, but for now i love to hear tight bass cause i mainly listened to techno and hard techno.

nope, just use my noise maker machines at home, i mean for personal use only, love to hear the roof top of our garage and house cranking....:D good thing i have understanding neighbors..hehehe.

i made an inquiry regarding the V12 from K10, its worth 27 thou in peso. is it really a class H amp? very cheap for a class H amp. what is its power ratinG, hope you have pictures and specs. of v12.

thanks again

jayrjoe 15th September 2006 10:47 AM

hi audio machines,

forget to ask re the labon power amp, is that 2500 watts 8 ohms RMS per channel?

audiomachines 15th September 2006 12:10 PM

hello jayrjoe,

Gee man I though your in p.a. work:D that's one serious home setup:hot: Yes the Labon power amps 2500w into 8/ channel. I would suggest you try one of those bass exciter/ enhancer processors from Behringer.Try also to use heavy guage wiring for your extension cords/ power strips. This amps drew large amount of current. Maybe your 220VAC is sagging, that is why your amp goes into premature clipping, it needs "stiff" 220VAC supply. I think the V12 is rated just like the H3000 1.5Kw at 8 ohms. I'll try to dig some info for you about the Konzert V12 power amp. Yes it is a class H amp.

Best Regards,

jayrjoe 15th September 2006 01:59 PM

hi audio machine,

wow! that so much power for the Labon amps...
can it handle 2 ohms load? worth interesting to see those amps in pictures and action hehehe, maybe too expensive mate. could you please give me their website? made in china also?

yap in the near future, i will upgrade my EQ to Behringer FB6200 a dual 30 band EQ with feedback detector.

then I plan to build the 186 horn or the 1850, maybe the T & T driver would be suitable on that cab, still not sure, im still waiting for the T/s parameters from the supplier. i dont have any gadgets to measure the T/s of speakers.

more power...:D :hot:

jayrjoe 15th September 2006 02:02 PM

thanks again audio machine for the help...

jayrjoe 19th September 2006 12:29 AM

hi guys,

good morning to all,

anyone who has the T/S parameters for the T&T 18 inch subwoofers?
its a dual stack magnet sub with double spider and with a power handling of 1000 watts rms.

i've asked from the suppliers but got no reply from them yet. maybe you guys have readily available or have measured it thru some your gadgets.
please do share if you have any, i'll glady appreciate it.

thanks in advance.


hienrich 20th September 2006 08:10 AM

hi audiomachine,

I wonder if you've got plans or measurements for L36
cerwin vega subs


Tech Stuff Audio Engineering
Dgte. City

audiomachines 20th September 2006 10:09 AM

hi hienrich,

I got the L36 plans for the cerwin vega 189je II drivers, send me a pm and i will email it to you.

hienrich 20th September 2006 10:24 AM

hi gud evening,

can you send it to

my email add:



audiomachines 20th September 2006 01:49 PM

you got mail

rolandong 20th September 2006 11:26 PM

hi audiomachines,

pls let me have it also:
i was thinking to build the labhorn 2x12", problem is shipping costs more than the drivers itself.


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