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Old 21st October 2006, 08:54 AM   #1
iggy888 is offline iggy888  Croatia
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Question 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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Old 22nd October 2006, 08:31 PM   #2
iggy888 is offline iggy888  Croatia
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Anyone?
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Old 23rd October 2006, 09:50 AM   #3
sreten is offline sreten  United Kingdom
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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.
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Old 23rd October 2006, 02:53 PM   #4
iggy888 is offline iggy888  Croatia
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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".
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Old 23rd October 2006, 03:34 PM   #5
iggy888 is offline iggy888  Croatia
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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.
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Old 24th October 2006, 03:52 PM   #6
Loiti is offline Loiti  Austria
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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
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Old 25th October 2006, 10:00 AM   #7
sreten is offline sreten  United Kingdom
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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.
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Old 25th October 2006, 03:56 PM   #8
iggy888 is offline iggy888  Croatia
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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.
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Old 26th October 2006, 06:59 PM   #9
sreten is offline sreten  United Kingdom
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Hi,

Why build something your not sure about ?

/sreten.
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Old 26th October 2006, 07:16 PM   #10
yoke is offline yoke  Croatia
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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 )
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