Altec A7 build

**Altec Best** · June 30th, 2012, 01:04 PM

One other thought. He has the opposite so he will have some serious attenuation to do IMHO.His drivers are 16 ohm woofers and 8 ohm HF drivers (802-8G'
s)

@Pano BTW - I like to travel with lots of my own gear as well ! Then we could pool our stuff and put together something nice... Sounds like lots of FUN !

How far away are you ?

**aditya** · June 30th, 2012, 09:34 PM

@ VolvoHeretic

Yes, you are quite right there.
Greater listening distance & higher power brings out the best in the bass region for the A5/A7.
Some design...

**aditya** · June 30th, 2012, 09:55 PM

Originally Posted by Panomaniac

Ooopps! Yes, that IS what I meant. And it's how I run my system. (must have been the rum and coke talking)

I liked it b'coz you are not alone there. In fact initially I had replied to AB's post saying that he was wrong (sorry AB...smile), & you were right, and I had also mentioned it as '16 ohms woofer & 8 ohms HF", but quickly realised my fault and removed the reply as it was unnecessay. However it seems you both are going to have a nice time soon with each other and the Altecs. I can't join but my good wishes will.

Strange creatures these A5/A7s are. Even mere discussions about them bring out the best in human beings ! Probabely b'coz after switching many times between hair tearing moments to moments of nirvana, one gets seasoned out.

Aditya

**amandarae** · June 30th, 2012, 11:04 PM

Very nice!!!

I use 416-8B's and 288C's(16 ohms) on mine and no problem with attenuation even with the 8 ohms LF and 16 ohms HF XO. I will recommend discrete attenuator circuits once you decided the right level using Lpads as to me, the difference between the two is not subtle.

Preamps you say? I will recommend a Supratek if you want transformer coupled. Another one since you are into DIY heavily , I am sure you can build either a type 76, 56, or 26 preamp.

Abe

**Altec Best** · July 1st, 2012, 12:16 PM

Originally Posted by aditya

I liked it b'coz you are not alone there. In fact initially I had replied to AB's post saying that he was wrong (sorry AB...smile), & you were right, and I had also mentioned it as '16 ohms woofer & 8 ohms HF", but quickly realised my fault and removed the reply as it was unnecessay.

Yeah I was wondering were that post went ?

No Problem Aditya ! We all make mistakes, and I probably make more than anyone ...

**Panomaniac** · July 1st, 2012, 01:56 PM

Originally Posted by aditya

I Probabely b'coz after switching many times between hair tearing moments to moments of nirvana, one gets seasoned out.

Yep, I think you've hit the nail on the head!

GM · July 1st, 2012, 03:52 PM

Originally Posted by Altec Best

One other thought. He has the opposite so he will have some serious attenuation to do IMHO.His drivers are 16 ohm woofers and 8 ohm HF drivers (802-8G's)

Stack and series wire another pair of 511s on top of the existing pair to create a ~350 Hz horn with mids and attenuate just one each of the additional HF up high and add CD horn EQ if need be, i.e. a poor man's 805/288 combo except with a better, more extended HF response. GM

**santhoshl** · July 1st, 2012, 11:57 PM

Originally Posted by aditya

Strange creatures these A5/A7s are. Even mere discussions about them bring out the best in human beings ! Probabely b'coz after switching many times between hair tearing moments to moments of nirvana, one gets seasoned out.

Aditya

Very true and I am enjoying every bit of the journey and also learning from all your posts.

I will post the exact lpad values I am using later today.

**santhoshl** · July 2nd, 2012, 12:54 AM

Originally Posted by amandarae

Preamps you say? I will recommend a Supratek if you want transformer coupled. Another one since you are into DIY heavily , I am sure you can build either a type 76, 56, or 26 preamp.

Abe

Thanks Abe, appreciate if you could share some links. I am definitely considering DIY.

Originally Posted by GM

Stack and series wire another pair of 511s on top of the existing pair to create a ~350 Hz horn with mids and attenuate just one each of the additional HF up high and add CD horn EQ if need be, i.e. a poor man's 805/288 combo except with a better, more extended HF response. GM

Very interesting. Thanks GM.

**santhoshl** · July 6th, 2012, 10:58 PM

Hi Friends,
I received the 21216 throat adapters yesterday. Now the wait for the 805s begins

Here are some pics:

I must thank Altec Best for pointing me to these on eBay at the right time on another thread. Cost me ~$90 + shipping to India ($50). The seller found 6 of these lying in a barn and listed them separately which worked out well for me, chances of winning were higher.