Monacor SPH-165KEP + DT-25N DIY project

iggy888 · 21st October 2006, 09:54 AM

Hello. I found this project http://jan-jaap.vegter.nu/bs.html with Monacor drivers. Does anyone have experience with these drivers or has anyone made similar speakers? I read some good stuff about Monacor and it seem they are a good quality for money. The project would cost me around 300 euros so I would like to know would it be a good choice for a small room and some audiophile aspirations.

iggy888 · 22nd October 2006, 09:31 PM

Anyone?

sreten · 23rd October 2006, 10:50 AM

Hi,

The sensitivity is given as the same as the bass driver 89dB.
This usually means the designer has not consider baffle
step compensation and possibly other things as well.

So I couldn't recommend the design.

/sreten.

iggy888 · 23rd October 2006, 03:53 PM

Does it mean I have a problem and how will I hear it? I'm a newbie in DIY so I'm not familiar with this "baffle step compensation".

iggy888 · 23rd October 2006, 04:34 PM

OK, I learned something about BSC and I understand the concept. Can anyone tell me will it (BSC) be a problem in this situation and what should I do to eliminate it? Someone told me that the sensitivity for this speaker is more like 83-84 dB.

Loiti · 24th October 2006, 04:52 PM

Hello,

I really recommend don't use the Monacor SPH-165KEP!

First of all

1) The Thiele/Small Paramters given on the Monacor Website are completely **** (sorry), they've made a big mistake. Look at SPH-165CP and tell me if you know the TSP from somewhere... Also you can see that the TSP given for the KEP can not be true, due to the Impedance-peak at the plot (fs=40Hz)!

2) The KEP has a very bad bass output, I know this because I use it in my "diplomarbeit" (Maybe due to the false TSP)?

3) There is also a horrible dip at exactly 1kHz, which may be created by the phaseplug.

4) Distortion is not as good as mentioned. For that price, look for some Seas or Co.

Greets

sreten · 25th October 2006, 11:00 AM

http://www.zaphaudio.com/audio-speaker17.html

or

http://www.rjbaudio.com/Asterion/asterion.html

or

http://www.humblehomemadehifi.com/Tempo.html

for example.

/sreten.

iggy888 · 25th October 2006, 04:56 PM

Maybe this link will help: http://www.diyaudio.com/forums/print...024&perpage=14. Some say go for it, some say choose something else. I'm gonna make this design and we'll see what will come up. I just wanted to know what to expect. I'm just worried that the designer put the Fc at 3,5 KHz and I don't know will it be good, is it correct and how can I change it.

sreten · 26th October 2006, 07:59 PM

Hi,

Why build something your not sure about ?

/sreten.

yoke · 26th October 2006, 08:16 PM

I would take sreten advice
you can buy seas vifa and scan speak trough croatian dealers...( I belive...i have order and buy some scan speak's )

21st October 2006, 09:54 AM	#1
iggy888 diyAudio Member Join Date: Oct 2006	Monacor SPH-165KEP + DT-25N DIY project Hello. I found this project http://jan-jaap.vegter.nu/bs.html with Monacor drivers. Does anyone have experience with these drivers or has anyone made similar speakers? I read some good stuff about Monacor and it seem they are a good quality for money. The project would cost me around 300 euros so I would like to know would it be a good choice for a small room and some audiophile aspirations.

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22nd October 2006, 09:31 PM	#2
iggy888 diyAudio Member Join Date: Oct 2006	Anyone?

23rd October 2006, 10:50 AM	#3
sreten R.I.P. Join Date: Nov 2003 Location: Brighton UK	Hi, The sensitivity is given as the same as the bass driver 89dB. This usually means the designer has not consider baffle step compensation and possibly other things as well. So I couldn't recommend the design. /sreten.

23rd October 2006, 03:53 PM	#4
iggy888 diyAudio Member Join Date: Oct 2006	Does it mean I have a problem and how will I hear it? I'm a newbie in DIY so I'm not familiar with this "baffle step compensation".

23rd October 2006, 04:34 PM	#5
iggy888 diyAudio Member Join Date: Oct 2006	OK, I learned something about BSC and I understand the concept. Can anyone tell me will it (BSC) be a problem in this situation and what should I do to eliminate it? Someone told me that the sensitivity for this speaker is more like 83-84 dB.

24th October 2006, 04:52 PM	#6
Loiti diyAudio Member Join Date: Sep 2006	Hello, I really recommend don't use the Monacor SPH-165KEP! First of all 1) The Thiele/Small Paramters given on the Monacor Website are completely **** (sorry), they've made a big mistake. Look at SPH-165CP and tell me if you know the TSP from somewhere... Also you can see that the TSP given for the KEP can not be true, due to the Impedance-peak at the plot (fs=40Hz)! 2) The KEP has a very bad bass output, I know this because I use it in my "diplomarbeit" (Maybe due to the false TSP)? 3) There is also a horrible dip at exactly 1kHz, which may be created by the phaseplug. 4) Distortion is not as good as mentioned. For that price, look for some Seas or Co. Greets

25th October 2006, 11:00 AM	#7
sreten R.I.P. Join Date: Nov 2003 Location: Brighton UK	http://www.zaphaudio.com/audio-speaker17.html or http://www.rjbaudio.com/Asterion/asterion.html or http://www.humblehomemadehifi.com/Tempo.html for example. /sreten.

25th October 2006, 04:56 PM	#8
iggy888 diyAudio Member Join Date: Oct 2006	Maybe this link will help: http://www.diyaudio.com/forums/print...024&perpage=14. Some say go for it, some say choose something else. I'm gonna make this design and we'll see what will come up. I just wanted to know what to expect. I'm just worried that the designer put the Fc at 3,5 KHz and I don't know will it be good, is it correct and how can I change it.

26th October 2006, 07:59 PM	#9
sreten R.I.P. Join Date: Nov 2003 Location: Brighton UK	Hi, Why build something your not sure about ? /sreten.

26th October 2006, 08:16 PM	#10
yoke diyAudio Member Join Date: Jan 2004 Location: Split	I would take sreten advice you can buy seas vifa and scan speak trough croatian dealers...( I belive...i have order and buy some scan speak's )