Santro ICE - Installation & Tuning Queries

[navin]

Originally Posted by Bass&Trouble

... and in a lot of subwoofer amps.

I know that but we were talking HUs and like gunbir said the HXd2 has a HPF at 20Hz. I did not know that. I knew the 701 did but that is not a HU.

[nura]

Originally Posted by shuvc

Slightly OT :
How does the fader work in a HU which has only one pre-out ?
OR
If a fader works in a HU , does it indicate that it has 2 pre-outs ?

I think the fader works on the pre-amplified as well as post-amplified (direct to speakers) outputs of the HU.
Is there any way one can adjust the volume of only the rear-fill speakers connected to the HU, when the front components & sub are connected through preouts to an amp? This information is to help a friend.
Thanks.

[razor4077]

Originally Posted by nura

I think the fader works on the pre-amplified as well as post-amplified (direct to speakers) outputs of the HU.
Is there any way one can adjust the volume of only the rear-fill speakers connected to the HU, when the front components & sub are connected through preouts to an amp? This information is to help a friend.
Thanks.

Yea, the friend is interested to know too

[gunbir]

Originally Posted by navin

I know that but we were talking HUs and like gunbir said the HXd2 has a HPF at 20Hz. I did not know that.

In fact, the HX-D2 can do THROUGH/16Hz/20Hz/25Hz/30Hz and so on... so its not a fixed HPF, one can choose.

Originally Posted by nura

I think the fader works on the pre-amplified as well as post-amplified (direct to speakers) outputs of the HU.
Is there any way one can adjust the volume of only the rear-fill speakers connected to the HU, when the front components & sub are connected through preouts to an amp?

Well, if you have a 3 preout HU, its simple. Sub level menu controls sub preout, while fader controls front / rear levels. But I guess you knew that. In a 2 preout HU, where you're running the rear speakers off the HU rear channels, they would fade along with the sub.

One option is to use only the front preout of the HU, through to your amp. Then choose a single input to 4ch output mode on your amp (Nura Sir, your SRx5 does this but most budget amps don't).

Alternatively, use the front preout and split it into two preouts using a Y splitter like this,

and then input them into your amps. Assuming your sub amp is a mono, or an amp that has this capability, use a remote bass knob to control the level of the sub.

[nura]

@Gunbir - Clear, thanks. Would you recommend heat shrink tubing over spade connectors at the ends of speaker wires? Is a hair-dryer good enough to heat shrink the tubing?

[gunbir]

Originally Posted by nura

@Gunbir - Clear, thanks. Would you recommend heat shrink tubing over spade connectors at the ends of speaker wires? Is a hair-dryer good enough to heat shrink the tubing?

Yes, the hair-dryer will work fine. Sir, looks like you're going all out on this one.

[nura]

@Gunbir - It's always fun to learn .

[nura]

Besides, the humble Pioneer cables have heat shrink tubing. I don't want to deprive the Hertz Hi-Energies of them.

[razor4077]

Originally Posted by nura

@Gunbir - Clear, thanks. Would you recommend heat shrink tubing over spade connectors at the ends of speaker wires? Is a hair-dryer good enough to heat shrink the tubing?

Kolkata is growing up from the days of the black tapes!!

Btw, the Alpine CDE 9881 has 3 preouts, right?

[shuvc]

Doc, one request. You seem to be planning out every small detail of the install yourself. Please do take a lot of snaps and post them if possible.

[nura]

@Razor - Yes. Your HU has 3 preouts.
@Shuvc - I missed an opportunity last night as I had forgotten to take my camera. Entered Chandney Market through Gate # 5 & walked nearly to the other end. Found a shop with a huge stock of Malaysian MDF sheets in all thicknesses. A little further down, 2 guys were churning out MDF parcel trays on a jig-saw (not sure of the name, they called it a jaali machine) at the speed of a tray every 2-3 minutes. Next door, they were carpeting trays, MDF rings & amplifier mounting boards. They were even ready to fabricate MDF door pads if given samples!

[razor4077]

Hey... that sounds neat doc. Will accompany you some time to Chandni. The MDF amp mounting board sounds like a good idea!

Regd my setup: I need to see how they've wired it. Like you saw that day, I cannot tune out the rear fill from the HU. The sub quietens down with it.

[nura]

Originally Posted by razor4077

Will accompany you some time to Chandni. The MDF amp mounting board sounds like a good idea!

Sure, anytime.

Originally Posted by razor4077

I need to see how they've wired it.

Could they have connected the sub to the rear preout rather than the subout?

[shuvc]

Originally Posted by nura

Could they have connected the sub to the rear preout rather than the subout?

But in that case, the sub should not quieten down with the rears ?

[nura]

Originally Posted by shuvc

But in that case, the sub should not quieten down with the rears ?

I think the rears & sub would quieten down together if Razor was fading the rears.