plans for 15" driver and 1" compression wanted |
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DJ5
Registered User Joined: 30 November 2010 Location: MIDLANDS Status: Offline Points: 91 |
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Posted: 14 July 2022 at 2:04pm |
Hi,
Can anyone point me to the right direction for some plans for the following drivers , Thanks B & C 1" compression i think the following ones |
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smitske96
Young Croc Joined: 16 February 2016 Location: The Netherlands Status: Offline Points: 1092 |
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If you are going for a cheaper HF driver, I would look at something like the BMS 4550.
It can be crossed significantly lower and can definately keep up with any 15" driver. If you want the best performance, a stock crossover from any brand is not the way to go.
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Earplug
Old Croc Joined: 03 January 2012 Location: Europe Status: Offline Points: 7216 |
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The specs for the 15 already gives a recommended volume range for a cabinet. You then need to decide how low a cutoff you want, i.e. are you going to have a sub underneath. That will set the tuning. There are a few programs out there that will help you design a cabinet, eg. WinISD. Search & you will find! |
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Earplugs Are For Wimps!
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snowflake
Old Croc Joined: 29 December 2004 Location: Bristol Status: Offline Points: 3122 |
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if you cross a 15" at 2kHz you are going to get a lot of vocal beaming.
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DJ5
Registered User Joined: 30 November 2010 Location: MIDLANDS Status: Offline Points: 91 |
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Hi guys
thanks for the replies, I'm just looking for a cabinet design that will house these drivers, (plans) if that's possible thanks again
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Xoc1
Registered User Joined: 15 October 2012 Location: Devon UK Status: Offline Points: 397 |
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Eighteen sound has a mid top cab plan for the 15W700 Lots of good info in the PDF. But the recommended horn is a XT1464 1.4" which the PDF refers to as a 1"? so not right for the DE250. & crossover frequency is recommended as 1.5Khz. If you want any half decent results from your build I recommend you take note of the information in the PDF, as others have already commented, your choices may not be the best options. Edited by Xoc1 - 15 July 2022 at 9:44pm |
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DJ5
Registered User Joined: 30 November 2010 Location: MIDLANDS Status: Offline Points: 91 |
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Hi
So a 1.5khz cross over would be better/suitable for my drivers, i will have to double check the compression driver to make sure ive got the correct ones
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DJ5
Registered User Joined: 30 November 2010 Location: MIDLANDS Status: Offline Points: 91 |
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Hi
I doubled checked my Compression its a BMS 4538 NOT The B& C Would this be ok with the 15mb700
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smitske96
Young Croc Joined: 16 February 2016 Location: The Netherlands Status: Offline Points: 1092 |
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Do you already have it? 1,9kHz won't be optimal as explained in earlier posts.
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DJ5
Registered User Joined: 30 November 2010 Location: MIDLANDS Status: Offline Points: 91 |
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hi,
yes I already have the the bms compression and 15mb700 and beyma cross over
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Xoc1
Registered User Joined: 15 October 2012 Location: Devon UK Status: Offline Points: 397 |
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The higher the crossover frequency the more midrange beaming from the 15" driver. The Plans I linked to use a 1.4" HF horn. If you use your 1" driver you would have to choose a different horn & adjust the plans accordingly. The Beyma crossover is reasonably flexible in its configuration but is set to 2 Khz and may not be suitable for your bass driver as the impedance at 2khz is unlikely to be 8 Ohms. (looks more like 15 ohms in the impedance graph). You would need to measure & check its response with the crossover connected and then concider what to adjust to make it work if it is unsuitable This might need a zobel network to keep the bass impedance to the nominal 8 ohms at the crossover frequency. The HF attenuation offered by the Beyma crossover might be enough to tame the BMS HF dependent on the Horn but If the LF is 103 db and the HF 113 db at the crossover frequency and the max attenuation offered is 7.5 dB it might be a bit imbalanced. |
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DJ5
Registered User Joined: 30 November 2010 Location: MIDLANDS Status: Offline Points: 91 |
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what if I get new cross overs, the following ones
would these then run my 15mb700 and bms compression?
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