Hertz Dieci Speakers

Autophile · 21st September 2005, 12:45

apart from C-quenze they have Flex units also...in this range there are bigger drivers which can be used for subwoofer applications.

gunbir · 21st September 2005, 12:50

They are called C-Quence. They were on the www.audiotechnology.dk website earlier... Cant get it to open anymore... I think one of the ranges was called C-Quence Flex.

navin · 21st September 2005, 12:51

23cm is abuot 9". 4 of these would be a great sub. and would need about the same box as a 15".

Vivekphadnis · 21st September 2005, 15:25

I love this thread. This is a real audio discussion.

gunbir · 21st September 2005, 15:34

Quote:

Originally Posted by Autophile

The newer one with so called ring radiator tweeter is even worse.

Also, while the earlier xtype sets were made in Denmark, the new ones are sourced by Alpine from China and are no longer Vifas but look almost the same.... dont sound anything like the old ones though

navin · 21st September 2005, 16:57

Quote:

Originally Posted by Vivekphadnis

I love this thread. This is a real audio discussion.

enjoy vivek, before the mods redirect all of us to another forum.

Autophile · 21st September 2005, 20:07

Navin I was referring to the Flex range where they have bigger drivers ranging from 10" - 15". C-Quenze range is specifically meant and used for midrange / midbass reproduction.

For fast response and kick in bass using multiple small drivers is a better idea.

navin · 22nd September 2005, 13:04

i'm quite happy with multiple (read as 4) 8-9" woofer per channel sa the really low bass while great when produced makes everything else resonate and that is bad. it is better to have no/less low bass than bad low bass.

Autophile · 22nd September 2005, 19:03

Again its all depends on the installation and choice of drivers and car's build quality

Drivers with flat response installed in a inert enclosure will not cause such problems. You have to use damping material as the SPL increases. Does not matter if it is one or more drivers.

Most vibration problems are in 50-80Hz range which are prominent. Low bass is not that much of an issue.

We have 15" Image Dynamics IDQ Subwoofer running in Getz of a 500 Watts RMS amplifier in 1.5cuft sealed enclosure. We have not faced any such problems majorly.

navin · 22nd September 2005, 22:01

my rear glass (octy) resonates. cant use dynamat on that. isloated the subs on rubber sheet. still did. used smaller subs. lost some bass SPL and extrension (never needed it in real life) but it dont resonate either.

Autophile · 23rd September 2005, 10:32

Its probably your boot or the parcel shelf...never come across glass rattling.

gunbir · 23rd September 2005, 10:37

Quote:

Originally Posted by navin

my rear glass (octy) resonates. cant use dynamat on that. isloated the subs on rubber sheet. still did. used smaller subs. lost some bass SPL and extrension (never needed it in real life) but it dont resonate either.

Navinji, what Subs, Power and Enclosure?

Also, just in case you overlooked it, sometimes what is precieved as glass resonation is actually the rear wiper vibrating on the glass...

navin · 23rd September 2005, 12:02

my octy got no wiper and the glass did vibrate when you touch it you can feel the virbation.

i mananged to damp the rear shelf with 1.5mm lead sheet (trunk side) could not do the same to the glass :-( LOL

Subs were 2 12" boxes from Blaupunkt. the amp was my own home brew version putting out about 150-200W rms per channel (4 ohms).

I now use 2 8" tubes tucked into each side. damped the ports with old (clean) socks. front and rear speakers are Alpine driven by an Alpine 540 i think.

gunbir · 24th September 2005, 20:51

Quote:

Originally Posted by navin

my octy got no wiper and the glass did vibrate when you touch it you can feel the virbation.

i mananged to damp the rear shelf with 1.5mm lead sheet (trunk side) could not do the same to the glass :-( LOL

Subs were 2 12" boxes from Blaupunkt. the amp was my own home brew version putting out about 150-200W rms per channel (4 ohms).

I now use 2 8" tubes tucked into each side. damped the ports with old (clean) socks. front and rear speakers are Alpine driven by an Alpine 540 i think.

Hi... First off, congrats on your new status.

Re your post... sure, glass does vibrate. But could you hear it? I have not seen this before.

navin · 26th September 2005, 11:39

i dont think i could hear it per say becuase at the volume of music at which the glass vibrated but when i swtiched to smaller subs the bass sounded better integrated and a bit leaner. of course i lost the really low end and some max SPL capability but I prefer less bass well integrated to more bass that drowns evrything else. bass by itself should not call attention to itself. you should miss it's absence rather than notice it's presence.

21st September 2005, 12:45	#46
Autophile BHPian Join Date: Sep 2005 Location: New Delhi Posts: 931 Thanked: 2 Times	apart from C-quenze they have Flex units also...in this range there are bigger drivers which can be used for subwoofer applications.
	() Thanks

21st September 2005, 12:50	#47
gunbir Senior - BHPian Join Date: Sep 2005 Location: New Delhi Posts: 2,465 Thanked: 29 Times	They are called C-Quence. They were on the www.audiotechnology.dk website earlier... Cant get it to open anymore... I think one of the ranges was called C-Quence Flex.
	() Thanks

21st September 2005, 12:51	#48
navin Team-BHP Support Join Date: Mar 2004 Location: mumbai Posts: 24,330 Thanked: 6,969 Times	23cm is abuot 9". 4 of these would be a great sub. and would need about the same box as a 15". Last edited by navin : 21st September 2005 at 12:52.
	() Thanks

21st September 2005, 15:25	#49
Vivekphadnis BHPian Join Date: Jun 2005 Location: Bangalore Posts: 690 Thanked: 2 Times	I love this thread. This is a real audio discussion.
	() Thanks

21st September 2005, 20:07	#52
Autophile BHPian Join Date: Sep 2005 Location: New Delhi Posts: 931 Thanked: 2 Times	Navin I was referring to the Flex range where they have bigger drivers ranging from 10" - 15". C-Quenze range is specifically meant and used for midrange / midbass reproduction. For fast response and kick in bass using multiple small drivers is a better idea.
	() Thanks

22nd September 2005, 13:04	#53
navin Team-BHP Support Join Date: Mar 2004 Location: mumbai Posts: 24,330 Thanked: 6,969 Times	i'm quite happy with multiple (read as 4) 8-9" woofer per channel sa the really low bass while great when produced makes everything else resonate and that is bad. it is better to have no/less low bass than bad low bass.
	() Thanks

22nd September 2005, 19:03	#54
Autophile BHPian Join Date: Sep 2005 Location: New Delhi Posts: 931 Thanked: 2 Times	Again its all depends on the installation and choice of drivers and car's build quality Drivers with flat response installed in a inert enclosure will not cause such problems. You have to use damping material as the SPL increases. Does not matter if it is one or more drivers. Most vibration problems are in 50-80Hz range which are prominent. Low bass is not that much of an issue. We have 15" Image Dynamics IDQ Subwoofer running in Getz of a 500 Watts RMS amplifier in 1.5cuft sealed enclosure. We have not faced any such problems majorly.
	() Thanks

22nd September 2005, 22:01	#55
navin Team-BHP Support Join Date: Mar 2004 Location: mumbai Posts: 24,330 Thanked: 6,969 Times	my rear glass (octy) resonates. cant use dynamat on that. isloated the subs on rubber sheet. still did. used smaller subs. lost some bass SPL and extrension (never needed it in real life) but it dont resonate either.
	() Thanks

23rd September 2005, 10:32	#56
Autophile BHPian Join Date: Sep 2005 Location: New Delhi Posts: 931 Thanked: 2 Times	Its probably your boot or the parcel shelf...never come across glass rattling.
	() Thanks

23rd September 2005, 12:02	#58
navin Team-BHP Support Join Date: Mar 2004 Location: mumbai Posts: 24,330 Thanked: 6,969 Times	my octy got no wiper and the glass did vibrate when you touch it you can feel the virbation. i mananged to damp the rear shelf with 1.5mm lead sheet (trunk side) could not do the same to the glass :-( LOL Subs were 2 12" boxes from Blaupunkt. the amp was my own home brew version putting out about 150-200W rms per channel (4 ohms). I now use 2 8" tubes tucked into each side. damped the ports with old (clean) socks. front and rear speakers are Alpine driven by an Alpine 540 i think.
	() Thanks

26th September 2005, 11:39	#60
navin Team-BHP Support Join Date: Mar 2004 Location: mumbai Posts: 24,330 Thanked: 6,969 Times	i dont think i could hear it per say becuase at the volume of music at which the glass vibrated but when i swtiched to smaller subs the bass sounded better integrated and a bit leaner. of course i lost the really low end and some max SPL capability but I prefer less bass well integrated to more bass that drowns evrything else. bass by itself should not call attention to itself. you should miss it's absence rather than notice it's presence.
	() Thanks

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