Finally, I have ALTEC VOTT A7 !!

**replicante1971** · February 2nd, 2012, 01:48 PM

I, m from Spain, sorry my English .
After much searching I already got my A7
and now... that I need ?
I need help for set-up my system , (amps, pre, cables... I only have my LP12 turtable with MC 0,2V "ZYX" cartridge )
MY A7:
- 828 cabbinet
- woofers 515-8G
- 511b horn
- 808-8A Drivers
- altec 1631a crossover.

Regards

**Altec Best** · February 2nd, 2012, 02:14 PM

Welcome to the board ! And Congrats on the A7's ! Altec 1631 crossover ? I'm not familiar with those. So what are you looking for help to do,recommendation on amps,etc, ? Are these speakers already put together or are they components ?

OK I found it.It's an active XO.

http://altecpro.com/pdfs/vintage/Ele...Processing.pdf

**voice of the theater** · February 2nd, 2012, 02:19 PM

Posting some photos would help us to give you advice as far as speaker set up/fine tuning/improvements.....

**Old Guy** · February 2nd, 2012, 03:31 PM

Xover also sold as EV XEQ-2 I think EV still sells modules, you can make custom modules from the info in PDF.

**replicante1971** · February 6th, 2012, 06:50 PM

**replicante1971** · February 6th, 2012, 06:57 PM

**replicante1971** · February 6th, 2012, 07:17 PM

I need preamp, power amp and phono preamp.

I can get GENERAL ELECTRIC STEREO CLASIC 7700. This ia integrated amp with phono
g7700

or two RCA 70 watts like this, but I need a preamp with phono
rca1x

I do not understand about the crossover.
do I need two stereo amps for A7 ?

**Cal Weldon** · February 7th, 2012, 12:33 PM

Originally Posted by replicante1971

I do not understand about the crossover.
do I need two stereo amps for A7 ?

Yes, your crossover divides the signals into high and low before amplification so you will need two stereo amps.

**replicante1971** · February 7th, 2012, 01:56 PM

Thanks,
Them, I need
- Line premp
- two stereo amps.
- phono preamp
This is the best option for my Altec ?..... is an integrated amp ruled out for my altec ?

Considering that I live in a loft of 60 m2.
How many watts (power amp) i need for High (808-8A) ?
" " " " " low (woofers 515-8G) ?

why everyone recommend 2A3 valves for high ?

nor do I understand which is the function of the crossover ?

I am sorry to ask so many questions, but I want to be sure before I buy something.

**Altec Best** · February 7th, 2012, 02:23 PM

Originally Posted by replicante1971

nor do I understand which is the function of the crossover ?

The Crossover is nothing more than protection for your drivers basically.High pass filter (HF) is to remove the Low Frequency's from the audio signal and the funtion of the Low Pass filter (LF) is to remove the High Frequency's from the audio signal.Your drivers are designed to handle certain frequencies (Frequency Response).If your woofers are rated say 20 Hz to 1600 Hz you want your crossover to cutoff all frequency's higher than 1600, most crossovers will cutoff way before their rating though.In this example say 1200 Hz, this is where your HF driver will cut in to handle the rest of the bandwidth. Very Simple explanation but hope this helps you understand a little better.Without some sort of crossover or protection you could blow your HF diaphragms and woofer voice coils quite frequently with higher power levels.