Does anyone know how to make a timing relay to delay my amp from turning on
for a second or so. This is for turn on pop elimination.


Thanks

A simple RC circuit will do that, however it will not
remove a turn on "pop" if its comming from the amp
when it turns on. (it will just delay it)
Jeff

"William Pitt" wrote in message
...
Does anyone know how to make a timing relay to delay my amp from turning
on
for a second or so. This is for turn on pop elimination.


Thanks

Go to a autoparts store and pick up a relay. Probably like 10 bucks or
so. These diagrams are taken from the rec.audio.car FAQ.

There are two types


The connections on the two types of relays look like this:

SPST SPDT
===================== =====================
(87) (87)
+---------+ +---------+
| -- | | -- |
| | | |
(86) | | | | (85) (86) | | -- | | (87a - center)
| | | | (85 - right)
| | | | | |
+---------+ +---------+
(30) (30)

Pins 85 and 86 connect to the coil which causes the relay to switch.
On both relays, pins 30 and 87 are normally disconnected. When the
relay is activated (switched) pin 30 and 87 are then in contact. The
difference with the SPDT relay is that in the "normal" state, pins 30
and 87a are in contact.

To hook up a relay (either kind) for a remote turn on, make the
following connections:

Pin 30
+12 Volts (Battery +)
Pin 87
Amplifiers' remote turn-on terminal
Pin 86
Head unit remote turn-on lead
Pin 85
Ground
Pin 87a
No connection (SPDT only)





"William Pitt" wrote in message ...
Does anyone know how to make a timing relay to delay my amp from turning on
for a second or so. This is for turn on pop elimination.


Thanks

The turn on thump is caused by transient signal in the audio path when
the moment the unit power up. By delaying the amp for a second or two
after the HU turns on, the HU voltage settles down.

Most of the amps today have this built in, but sometime the timing is
not correct.
--
pittwm
------------------------------------------------------------------------
CarAudioForum.com - Usenet Gateway w/over one million posts online!
View this thread: http://www.caraudioforum.com/vbb2/sh...hreadid=156566

Or from head remote out(+)
+-------R1--- toAmp Remote in ---+C1-----GND

R1= 100K about 1Sec
R1= 220K about 3Sec
C1= 10uF 16-25V

Time delayed turn on without relays, but if the amp is
the source it will still pop.
You can use the same circuit to delay relay turn on
and use the relay to the speaker leads if it is the amp.
Jeff

"Greg" wrote in message
om...
Go to a autoparts store and pick up a relay. Probably like 10 bucks or
so. These diagrams are taken from the rec.audio.car FAQ.

There are two types


The connections on the two types of relays look like this:

SPST SPDT
===================== =====================
(87) (87)
+---------+ +---------+
| -- | | -- |
| | | |
(86) | | | | (85) (86) | | -- | | (87a - center)
| | | | (85 - right)
| | | | | |
+---------+ +---------+
(30) (30)

Pins 85 and 86 connect to the coil which causes the relay to switch.
On both relays, pins 30 and 87 are normally disconnected. When the
relay is activated (switched) pin 30 and 87 are then in contact. The
difference with the SPDT relay is that in the "normal" state, pins 30
and 87a are in contact.

To hook up a relay (either kind) for a remote turn on, make the
following connections:

Pin 30
+12 Volts (Battery +)
Pin 87
Amplifiers' remote turn-on terminal
Pin 86
Head unit remote turn-on lead
Pin 85
Ground
Pin 87a
No connection (SPDT only)





"William Pitt" wrote in message
...
Does anyone know how to make a timing relay to delay my amp from turning
on
for a second or so. This is for turn on pop elimination.


Thanks