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Post by puffin on Sept 12, 2023 18:35:11 GMT
I am now on my second pair. The first being a prototype of a commercial offering (EAR Primary Drive) that I had to completely dismantle and reconstruct and I have just rehomed a pair of Lampizator P17s that I got about 10 years ago and were not well put together.
More details and pics to follow if there is enough interest.
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Post by MartinT on Sept 12, 2023 18:56:23 GMT
Pics for sure! Show us what you've done.
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Post by julesd68 on Sept 12, 2023 21:35:01 GMT
Yes we always like to see pics of new gear.
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Post by John on Sept 13, 2023 6:03:04 GMT
I been through a few OBs in the past.
Look forward to your build.
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Post by puffin on Sept 13, 2023 7:43:44 GMT
Well prepare to be underwhelmed  The original build was in line with the proportions recommended by Mr Lampizator but given the material chosen for the baffles they had been made in 2 sections, the Mid and Tweet baffle and a separate enclosure for the bass. The worktop used was really heavy and the top section just sat on the bass box/ The overall height was around 155cm which did not suit my room as it is not that big. I decided to cut one of the bass hardwood baffles in half to make a slimmer profile for the new version. Hmmm that was a workout doing it manually! I distanced the mid and tweet as before but the bass is obviously closer to them than before. The overall height is 110cm the same as the EARs. Well it was really worth all the effort as they sound like a completely different speaker and much much better. If I had not done this I would never have heard their potential. I would have probably sold them on. The Mid and Tweet are on the end of a Pass ACA Mini 5w Class A and the bass (at present) is one of better quality Sony ES range as it has remote volume control so that I can gauge where that needs to be. I am still rediscovering my playlists,    |
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Post by puffin on Sept 13, 2023 7:49:44 GMT
Less Grainy.  |
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Post by daytona600 on Sept 13, 2023 16:12:34 GMT
Recently picked up some OBs from a cinema
107bd 4way OB horns Quad18s , Twin15s , Mids 7inch & HF 5inch with 8x1250wpc rack ammps with 56bit DSP
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Post by MartinT on Sept 13, 2023 16:17:49 GMT
I like the way you've added the wood finish additional baffle to the lower part of the speaker for the bass drivers.
What is the mid driver, looks quite old?
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Post by puffin on Sept 13, 2023 16:37:09 GMT
Both the Mids and Tweets are around 50 years old. Known as Saba Green Cones which were fitted to radios and probably radiograms back in the day. Very sensitive. I have just tried a 3.5w EL84 amp with them and it is good match.
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Post by puffin on Sept 13, 2023 16:39:29 GMT
Recently picked up some OBs from a cinema 107bd 4way OB horns Quad18s , Twin15s , Mids 7inch & HF 5inch with 8x1250wpc rack ammps with 56bit DSP Nice. Professional installs often sound great. Not sure that you would need 1250w in a domestic setting  |
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Post by daytona600 on Sept 16, 2023 13:47:09 GMT
8 channel 1250w total 10kw rack mounted beast with DSP & PC interface
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Post by John on Sept 16, 2023 15:29:59 GMT
I remember Sovereign Open baffle speakers, rather nice
The more you can isolate the bass drivers the better sound from from the bass and low mids
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Post by John on Sept 16, 2023 15:31:59 GMT
The sabre green are okay not my favourite driver but personal preference as many like them
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Post by puffin on Sept 17, 2023 15:01:42 GMT
The sabre green are okay not my favourite driver but personal preference as many like them I have made a few changes in the last couple of days. I was initially of the opinion that the frequencies chosen for the bass crossover had a bit too much mid-range coming through and used a rather crude active crossover. Having removed this and played with the volume on the bass I have found that it does in fact provide more of a cohesive whole and at the right level does not mess with the mid or higher frequencies. I may try just one amp for the whole array to save faffing around too much and to see if my initial impressions were right or wrong. I have to say that as they actually sound a hundred times better than in their previous baffles, I could be a Saba Green Cone convert |
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Post by puffin on Nov 5, 2023 17:38:37 GMT
UPDATE:
Having spent a couple of months with these now I can say that they are really very good and are able to show subtle differences between different DACs but not to the point where anything is unlisteneable or a no-no. The soundstage is pretty impressive so too the depth that extends in some instances some distance beyond the baffles. As I only paid £200 for the whole caboodle (the crossover parts would have been a large chunk of that) I am pleasantly pleased.
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