LA5
Printed From: Speakerplans.com
Category: Plans
Forum Name: New Projects Forum
Forum Description: Forum for new speakerplans projects, in memory of Tony Wilkes, 1953 - 2014
URL: https://forum.speakerplans.com/forum_posts.asp?TID=105662
Printed Date: 26 March 2026 at 5:29pm
Software Version: Web Wiz Forums 12.08 - https://www.webwizforums.com
Topic: LA5
Posted By: dlyxover
Subject: LA5
Date Posted: 02 September 2020 at 1:12am
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2x5" + 1" https://ibb.co/f2dPYYF" rel="nofollow">  https://ibb.co/Hr9R0Kc" rel="nofollow">  https://ibb.co/qxR7xcw" rel="nofollow">  https://ibb.co/ZWrHqHK" rel="nofollow">
 ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Replies:
Posted By: JonB67
Date Posted: 02 September 2020 at 8:00am
| Very nice! What's the hf? Intrigued. |
Posted By: dlyxover
Date Posted: 02 September 2020 at 10:58am
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I'm using a BMS 4538 on a 18sound XG10 waveguide ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: njw
Date Posted: 05 September 2020 at 10:04pm
| That's cute, what are the dimensions? |
Posted By: MarjanM
Date Posted: 05 September 2020 at 11:45pm
Can you please post the raw frequency response of the HF with no eq and no HPF? I am just curious how that combo works. ------------- Marjan Milosevic MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
dlyxover wrote:Posted By: dlyxover
Date Posted: 06 September 2020 at 5:21pm
They are 400mm wide, 168mm high and 296mm deep I'll take measurement for you tomorrow MarjanM
------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: dlyxover
Date Posted: 16 September 2020 at 6:49pm
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Received some torx head bolts I had manufactured. A4 stainless steel black passivated.  MarjanM not been able to take any measurements should get it by the end of the week.
------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: MarjanM
Date Posted: 16 September 2020 at 7:13pm
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Its cool man. No rush. :) ------------- Marjan Milosevic MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
Posted By: dlyxover
Date Posted: 20 September 2020 at 2:23pm
below is the measurement with no filtering (orange) and filtered and 2 eq points (purple) of the HF unit. ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: MarjanM
Date Posted: 20 September 2020 at 4:13pm
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Thank you. Looks like a good match. ------------- Marjan Milosevic MM-Acoustics www.mm-acoustics.com https://www.facebook.com/pages/MM-Acoustics/608901282527713 |
Posted By: doober
Date Posted: 20 September 2020 at 9:14pm
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Very neat, I like it. Are you running both 5" drivers up to the crossover to the comp? What eq did you use? Is it a high shelf boost and a parametric cut lower down? ------------- Blahblahblah |
Posted By: dlyxover
Date Posted: 20 September 2020 at 9:52pm
Thank you. Yes, both 5" drivers are going upto the comp. Using a parametric cut and a high shelf boost  No Eq on the 5", the LPF doesn't meet the 1" HPF; found a slight gap improved the response and phase.  The 5" & 1" together  ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: doober
Date Posted: 21 September 2020 at 7:48pm
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Thanks for the info. Your EQ looks very similar to what I've tried on my home made waveguide with a BMS 4538. Response looks similar too. That's great news for me. The reason I asked if both 5" drivers are run together relates to off axis response, something else I've been looking into recently. My calculations suggest that you will get -6dB at 45 degrees off axis, at around 625Hz. This is based on a guess that your drivers are 260mm centre to centre. I haven't tested this calculation yet- have you noticed this dip at all? ------------- Blahblahblah |
Posted By: dlyxover
Date Posted: 21 September 2020 at 9:52pm
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I was curious if that is common with this type of wave guide. The driver centres is 251mm (good guess), I haven't noticed any significant nulls when listening; not measured off axis yet. There is a 7db dip @ 600hz but also @ 300hz, and 220hz, put this down to the measuring environment as the continuity gets skittish at those points also. Have a BMS 4524 I'm going to try. ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: doober
Date Posted: 22 September 2020 at 1:19pm
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I just realised I calculated that wrong, the dip would be at 1250Hz. Possibly, if I got the theory and calculation right this time! ------------- Blahblahblah |
Posted By: smitske96
Date Posted: 22 September 2020 at 3:01pm
Try the 4550 
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Posted By: dlyxover
Date Posted: 22 September 2020 at 3:38pm
its too big, won't fit in enclosure on the waveguide, was going to use a 4544 intiailly but it I also too large ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: dlyxover
Date Posted: 22 September 2020 at 6:30pm
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put the 4524 into today unprocessed Orange 4538 pink 4524  processed purple 4538 green 4524  5" & 1 grey with 4538 yellow with 4524  ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: smitske96
Date Posted: 22 September 2020 at 6:43pm
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A little more expensive but they also have the newer 5530ND, diamater is only 72mm. |
Posted By: dlyxover
Date Posted: 22 September 2020 at 6:56pm
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dose look like a good candidate, really don't need that much power as the 5" drivers are only 80w each ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: smitske96
Date Posted: 22 September 2020 at 7:10pm
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But you can cross it lower if needed. Also headroom is always a good thing. Running them at lower power also means less distortion
 |
Posted By: dlyxover
Date Posted: 22 September 2020 at 8:38pm
your not wrong ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: dlyxover
Date Posted: 11 December 2025 at 12:59am
------------- Lignum_ww@icloud.com GNKaudio@icloud.com |
Posted By: FOO
Date Posted: 11 December 2025 at 9:35am
| Very nice... Ports hidden in the handles? |
Posted By: dlyxover
Date Posted: 13 December 2025 at 10:54am
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yeh, to try and prevent water ingress ------------- Lignum_ww@icloud.com GNKaudio@icloud.com |