what protection lamps do i need?
in [Live Sound]
|
From: non-biz on 11 Jun 2007 23:06 I have some R&D cases wedges loaded with a 2226h 15" ventagap woofer and a 2426h comp 1" exit driver. The HF is protected by a 1 amp fuse and i want to change them over to a lightbulb type circuit. The amplifier used for these wedges is a QSC EX4000 rated at 1250w/side @ 4ohms. I am needing advice on lamp # to handle protecting the HF drivers from burnout, but not starve them for power. Thanks in advance to all for your help. Eric WHite Pro Audio Services
From: Bob Urz on 11 Jun 2007 23:29 non-biz(a)hotmail.com wrote: > I have some R&D cases wedges loaded with a 2226h 15" ventagap woofer > and a 2426h comp 1" exit driver. The HF is protected by a 1 amp fuse > and i want to change them over to a lightbulb type circuit. The > amplifier used for these wedges is a QSC EX4000 rated at 1250w/side @ > 4ohms. I am needing advice on lamp # to handle protecting the HF > drivers from burnout, but not starve them for power. > > Thanks in advance to all for your help. > > Eric WHite > Pro Audio Services > Start with at least two 12volt automotive dome lamp bulbs in parallel (with each other) then the combination in series with the HF and go from there. Bob ----== Posted via Newsfeeds.Com - Unlimited-Unrestricted-Secure Usenet News==---- http://www.newsfeeds.com The #1 Newsgroup Service in the World! 120,000+ Newsgroups ----= East and West-Coast Server Farms - Total Privacy via Encryption =----
From: Phil Allison on 11 Jun 2007 23:44 " White Man" > > I have some R&D cases wedges loaded with a 2226h 15" ventagap woofer > and a 2426h comp 1" exit driver. The HF is protected by a 1 amp fuse > and i want to change them over to a lightbulb type circuit. ** Must have a schem of the passive crossover to analyse. Lamps must go AHEAD of the crossover - not in series with the horn driver itself or their effectiveness is lost. ....... Phil
From: Phil Allison on 11 Jun 2007 23:46 "Bob Errs" >> > > Start with at least two 12volt automotive dome lamp bulbs in parallel > (with each other) then the combination in series with the HF and go from > there. ** Ridiculous. ...... Phil
From: non-biz on 12 Jun 2007 00:33
> > ** Must have a schem of the passive crossover to analyse. Lamps must go > AHEAD of the crossover - not in series with the horn driver itself or > their effectiveness is lost. > > ...... Phil Please explain wht this is more effective to put it ahead of the xover and how when in series with the voice coil its ineffective. Bob- thanks but i need a little more data on dome lamps to make a good decision to do that. Maybe ii need to grab some lamps, scope and a pulse gen to emperically determine the lamps i need. Thanks -eric |