My adapters arrived today and I wasted no time trying them out with my 802-8Gs. I left the XO at 500Hz for the time being.
Needless to say, I had to turn the attenuator knob up from about 1 to 6, but they sound great. Not as in your face as the 288s and I'm thinking a bit more extended on the top end. I think I'll let my ears burn in for a while...
To be fair you should build fixed pad for the 288's to try to get the L-pad somewhere in the middle of it's range with the 288's.Originally Posted by alancohen
My adapters arrived today and I wasted no time trying them out with my 802-8Gs. I left the XO at 500Hz for the time being.
Needless to say, I had to turn the attenuator knob up from about 1 to 6, but they sound great. Not as in your face as the 288s and I'm thinking a bit more extended on the top end. I think I'll let my ears burn in for a while...
To balance a passive system i like to start with the HF way low and bring it up slowly to more or less a point of balance. It sounds like the L-pad is hugging an extreme to get the 288's close to their balance point which is gonna make it pretty hard to make a fair assessment.
Not all vegetables make good leaders.
You would think that on packaged "system" like this A6, the "pad" should be built in to the crossover. It's not like I'm mixing components. This system was sold this way. Like I mentioned, the only think I can think of is that it was meant for an environment where a lot of ambient noise was expected and the HF is hot to overcome this. I'm sure it was not meant for a small room like my living room where someone would be sitting 9' away.
The 802s seem a bit mellower in the mids, well more than a bit, and more extended in the highs. To be honest, at first blush I don't feel like I'm missing anything. That surprised me. I might measure them, then again I might not. I tend to prefer measuring with my ears. I have several 'reference' songs that tell me what I need to know. And a major factor for me is whether the music pulls me in, or pushes me away, especially after a longer session. First impression is that I could listen to these all day.
Part of what I think it might be is with the 288s I can here the horn itself. I can hear the fiberglass resonate as certain points. The 802s don't seem to 'ring the bell' as much. I wish I could try them with a different horn, but this is all I have at the moment.
I think you're probably spot on.You would think that on packaged "system" like this A6, the "pad" should be built in to the crossover. It's not like I'm mixing components. This system was sold this way. Like I mentioned, the only think I can think of is that it was meant for an environment where a lot of ambient noise was expected and the HF is hot to overcome this. I'm sure it was not meant for a small room like my living room where someone would be sitting 9' away.
The 288 produces far more acoustic energy. Most of the horns designed to be used on the 288 had significant damping. Seems logical that some of the fiberglass horns might benefit from the application of some type of damping as well.The 802s seem a bit mellower in the mids, well more than a bit, and more extended in the highs. To be honest, at first blush I don't feel like I'm missing anything. That surprised me. I might measure them, then again I might not. I tend to prefer measuring with my ears. I have several 'reference' songs that tell me what I need to know. And a major factor for me is whether the music pulls me in, or pushes me away, especially after a longer session. First impression is that I could listen to these all day.
Part of what I think it might be is with the 288s I can here the horn itself. I can hear the fiberglass resonate as certain points. The 802s don't seem to 'ring the bell' as much. I wish I could try them with a different horn, but this is all I have at the moment.
I recently had to return the 288C's i had been loaned so my listening comparisons are pretty limited at this point. But, your listening impressions seem to more or less mirror mine where the drivers are concerned, and would further seem to support the upward shifted response(GM and OG been tellin us this for a while) of the small format tangerine drivers.
Not all vegetables make good leaders.
And of course this now begs the question: should I be switching the XO from 500Hz to 800?But, your listening impressions seem to more or less mirror mine where the drivers are concerned, and would further seem to support the upward shifted response(GM and OG been tellin us this for a while
I tried it briefly on one speaker and the difference did not jump out at me so I put it back. I wanted to keep listening with all else equal except the drivers for a while. By the weekend I will try 1200Hz for the opposite extreme and again listen for a while. This N1285 XO is pretty handy. Not sure quite what's in the box though.
I can't remember which thread, but i asked about this not too long ago and AB posted a great pic of a naked 1285 XO. Hopefully, he'll see this and know just what to do.Not sure quite what's in the box though.
Not all vegetables make good leaders.
I can't remember which thread, but i asked about this not too long ago and AB posted a great pic of a naked 1285 XO. Hopefully, he'll see this and know just what to do.The problem is the 288's are a lot more efficient so that is why they play a lot louder than the woofers.. You can try a 30904/30923 attenuator board... I have both the 30923 and the 30904 that i just got recently. They are used for matching less efficient woofers to higher efficiency Compression drivers.
Altec 1285-8B Crossovers by Altec Best, on Flickr
Altec 1285-8B Crossovers by Altec Best, on Flickr
Altec 30923 Attenuators by Altec Best, on Flickr
HPIM3065 by Altec Best, on Flickr
HPIM3066 by Altec Best, on Flickr
Altec3090430923 by Art J., on Flickr
i was noticing that the horn was made of fiberglass. i'm suprized it doesn't ring a lot. especialy from the LFs. it looks like they have a fair bit of undercoating on them. so getting anything to stick would be a challenge. the next thing would be an enclosure. there is a composite called coosa that is very dense. but it would need to be incorporated into the layup. if i had a plug i'd have a pair or ten made up.
That's just the raw side of the fiberglass painted factory gray. Should be easy to get adhesion, and you need to be careful about getting splinters.it looks like they have a fair bit of undercoating on them.
Not all vegetables make good leaders.
i sure know those splinters.what do most of the guys use to deaden them with?
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