I think Pano cover the driver Q in post #2518.
l’ve ordered a bunch of resistors to play with as I all the instructions say tune to your room/preferences. The values in post #2500 are best average and a good place to start.
Last edited:
Yes, that's it in a nutshell.
https://www.diyaudio.com/community/threads/fast-fun-inexpensive-ob-project.110583/post-6532860
Okay, again, why wait? 🙂
Until the new baffle material is here, I thought I can modify the old baffle. I made a cutout for the TC9 with a diameter of 133 mm, and in this cutout I sunk and glued a 4 mm ply with the exact same shape as the cutout, flush with the surface. Now the TC9 has plenty of room to breath freely.
Until the new baffle material is here, I thought I can modify the old baffle. I made a cutout for the TC9 with a diameter of 133 mm, and in this cutout I sunk and glued a 4 mm ply with the exact same shape as the cutout, flush with the surface. Now the TC9 has plenty of room to breath freely.
That looks great. I did something similar on my build years back.
I also ended up adding filler to the outer edge of the cut out to smooth things out. It prevented a resonance that was there with the sharp edge. I like to think the music now gracefully slides out of the hole ...
It seemed to make a difference and it was cheap.
I also ended up adding filler to the outer edge of the cut out to smooth things out. It prevented a resonance that was there with the sharp edge. I like to think the music now gracefully slides out of the hole ...
It seemed to make a difference and it was cheap.
Hi, I have not been lazy since thursday and have completely rebuilt the Manzies.
The result: an incredible change, the sharpness is completely gone, they just make music beautifully.
The mids are crystal clear, the bass is deep, punchy but not boomy, the highs are very finely detailed - I'm thrilled.
That's why I decided to complete the finish, and with the ordered resistors I will only - if at all - make small adjustments.
The result: an incredible change, the sharpness is completely gone, they just make music beautifully.
The mids are crystal clear, the bass is deep, punchy but not boomy, the highs are very finely detailed - I'm thrilled.
That's why I decided to complete the finish, and with the ordered resistors I will only - if at all - make small adjustments.
Wow! That is a very pretty build. 
Can you tell us what you did during the rebuild? What did you change and what do you think made the difference in the sound?
A see a very nice turntable there, how do your LPs sound on the "new" Manzanitas?
Can you tell us what you did during the rebuild? What did you change and what do you think made the difference in the sound?A see a very nice turntable there, how do your LPs sound on the "new" Manzanitas?
Many thanks Pano 
As I wrote, first I opened up the cutout for the TC9 to more than 130 mm and in this big cutout I sunk a 4 mm ply baffle for it. So the TC9 has now a plenty of room to breath and I think this is the main reason for the huge improvement. Further, I shortened the "base plate" from 30 cm to 15 cm, and the legs are now placed near the edges of the base plate; I think the smaller surface of the base plate causes much less resonance.
And for the eyes, I covered the baffle with veneer structure foil 🙂
Today I only heard the cd player, no record, but maybe tomorrow, I'll report back then.
As I wrote, first I opened up the cutout for the TC9 to more than 130 mm and in this big cutout I sunk a 4 mm ply baffle for it. So the TC9 has now a plenty of room to breath and I think this is the main reason for the huge improvement. Further, I shortened the "base plate" from 30 cm to 15 cm, and the legs are now placed near the edges of the base plate; I think the smaller surface of the base plate causes much less resonance.
And for the eyes, I covered the baffle with veneer structure foil 🙂
Today I only heard the cd player, no record, but maybe tomorrow, I'll report back then.
Could we see the back of them please? I’m interested as I will hopefully start my build this month (waiting on parts).
Sure 🙂
The cables have not yet been finally laid, i will do it if the xo is no longer changed.
I once did an OB speaker covered in vinyl crocodile using a similar process. My wife helped my make them, so she allowed them in our small living room. 🙂
A short info to avoid some confusion: I have marked the negative pole of the TC9 with red because this pole is connected to the signal (+) output of the xo.
Today is turntable day 
The first record was Beethoven's 5th symphony with Sir Georg Solti and the Wiener Philharmoniker (from the label Decca), recorded way back in 1959.
And... wow. The spatial distribution, the profound depths, the dynamics, great. The stage imaging is incredible.
Then some hungarian pop from the band Napoleon Boulevard from 1987 😀 (the band is practically identical with the famous prog rock band Solaris) - it's just great.
Makes you want more - and more, larger diy open baffles 😍
(Equipment: Project RPM 9 Carbon, Project Evolution 9cc tonearm, Nagaoka MP-500 moving iron cartridge, Lehmann Black Cube pre)
The first record was Beethoven's 5th symphony with Sir Georg Solti and the Wiener Philharmoniker (from the label Decca), recorded way back in 1959.
And... wow. The spatial distribution, the profound depths, the dynamics, great. The stage imaging is incredible.
Then some hungarian pop from the band Napoleon Boulevard from 1987 😀 (the band is practically identical with the famous prog rock band Solaris) - it's just great.
Makes you want more - and more, larger diy open baffles 😍
(Equipment: Project RPM 9 Carbon, Project Evolution 9cc tonearm, Nagaoka MP-500 moving iron cartridge, Lehmann Black Cube pre)
Today I played with some damping material, out of couriosity.
I took my favourite jazz cd "Moon Ray" and at first I listened to it without changes.
First change: I covered the whole inner surface of the wings with 40 mm eggcrate foam. The bass is more refined and - yes - deeper. At the same time the mids and highs are not so open. (Funny: the best of all wifes comes into the room and asks me - she has absolutely nothing to do with this hobby and with music - "what did you do, it sounds like it's slowed down now". Yes, that was exactly the same as what I was thinking.)
In the second step I shortened the foam to the height of the woofer - and yes, that's it! The bass is great, more exact (in my ears, under my circumstances, etc.) and deeper (?) as without foam. The mids and highs are now wonderful open and live again, somewhat refined, but without being "slowed down".
I took my favourite jazz cd "Moon Ray" and at first I listened to it without changes.
First change: I covered the whole inner surface of the wings with 40 mm eggcrate foam. The bass is more refined and - yes - deeper. At the same time the mids and highs are not so open. (Funny: the best of all wifes comes into the room and asks me - she has absolutely nothing to do with this hobby and with music - "what did you do, it sounds like it's slowed down now". Yes, that was exactly the same as what I was thinking.)
In the second step I shortened the foam to the height of the woofer - and yes, that's it! The bass is great, more exact (in my ears, under my circumstances, etc.) and deeper (?) as without foam. The mids and highs are now wonderful open and live again, somewhat refined, but without being "slowed down".
This density foam has no effect on bass ...
P.S. But I have a question about your listing. What specific album called "Moon ray" do you mean?